Hepatology

For those of us treating patients with liver disease throughout the pandemic, we have anticipated evidence-based guidance regarding the contribution of specific liver disease phenotypes and immune suppression/transplantation on COVID-19 susceptibility and outcome. Now, data are emerging to help answer some of the major questions surrounding COVID-19 and the liver.

Does the virus itself cause liver disease?

The answer to this question is still a bit unclear. Multiple early reports^1-11 stated that hospitalized patients with SARS-CoV-2 infection frequently had elevated values on liver biochemistry tests. For example, the reported incidence of elevated serum aspartate aminotransferase (AST) or alanine aminotransferase (ALT) levels ranged from 14% to 83%, yet the magnitude of enzyme elevation was generally reported to be mild and normalized as COVID-19 symptoms improved.

Unsurprisingly, patients with severe liver injury (defined as AST and ALT levels more than five times the upper limit of normal) were more likely to have a complicated clinical course, including having elevated inflammatory markers and requiring intensive care unit admission, renal replacement therapy, and/or intubation. Currier and colleagues reported that patients with COVID-19 who had elevated AST and ALT levels had significantly higher odds of these same adverse outcomes and death.

This reflects the multifactorial pathogenesis of enzyme elevation, including a direct injurious effect of the virus on hepatocytes, cytokine or immune-mediated liver damage, drug hepatoxicity, or hypoxia and systemic inflammation.

Pellegrini and colleagues reported that 7% of patients infected with SARS-CoV-2 developed acute liver failure during their hospitalization, with a resulting mortality rate of 74%. Wagner and colleagues suggested that the pattern of peak elevated enzyme elevation was prognostic of severe clinical outcomes in hospitalized patients with COVID-19. Patients with a predominantly mixed pattern (AST/ALT and alkaline phosphatase elevations) had worse outcomes than those with a hepatocellular phenotype (isolated AST and/or ALT elevation).

Severe liver injury associated with SARS-CoV-2 infection is uncommon in children. However, elevated AST and ALT levels may be seen in association with multisystem inflammatory syndrome.^12-15
 

Are patients with preexisting chronic liver disease more susceptible to adverse outcomes?

Early observations suggested that patients with chronic liver disease, such as cirrhosis, who acquire SARS-CoV-2 have high rates of hospitalization and mortality. However, it is unclear whether all such patients are affected or whether certain subgroups are at higher risk.

In results that they hoped would allow for better risk stratification and personalization of care, Kim and colleagues reported that patients with alcohol-related liver disease, decompensated cirrhosis, and hepatocellular carcinoma have the highest risk for all-cause mortality from COVID-19. Separate presentations at Digestive Disease Week 2021 confirmed that patients with preexisting liver disease had a threefold higher rate of mortality, thromboembolism, acute respiratory distress syndrome, and a severe COVID-19 disease course, and that patients with both COVID-19 and cirrhosis had significantly higher rates of mortality (18% vs. 13%), ICU admission (46% vs. 34%), and longer lengths of stay than those without cirrhosis.

Nonalcoholic fatty liver disease (NAFLD) is currently the most common chronic liver disease, and its impact on the course of SARS-CoV-2 infection (and vice versa) is controversial. However, metabolic risk factors, such as obesity, diabetes mellitus, and hypertension, are known to be associated with severe illness from COVID-19. It was also reported that hepatic steatosis was associated with worse outcomes in patients with liver injury and SARS-CoV-2 infection, and that a higher proportion of patients with NAFLD required mechanical ventilation during their hospital course (47% vs. 17%) and had increased mortality (41% vs. 17%).
 

Do immunosuppressed patients face unique risks from infection?

Data from a limited case series, patient registries, and multicenter international studies have indicated that the clinical outcome of SARS-CoV-2 infection in adults with autoimmune hepatitis (AIH) was comparable to that noted in nonimmunosuppressed persons. However, it has also been suggested that a more complicated relationship exists between this virus and autoimmunity because immunosuppression may actually protect against the inappropriate immune response, or cytokine storm, engendered during severe SARS-CoV-2 infection.

The complexity of this relationship is further illustrated by a report from Bril and colleagues that described a case of AIH that developed after a patient had received a COVID-19 vaccine. The authors were careful to state that a causal relationship between receipt of the vaccine and the onset of AIH cannot be proven.
 

What’s the impact on liver transplant recipients?

Findings are limited regarding clinical outcomes and disease severity of SARS-CoV-2 infection in liver transplant recipients, but initial reports raised concern for high rates of adverse outcomes.^16-25

Tien and colleagues reported an increased risk for COVID-related death among liver transplant recipients. Separate international multicenter studies published in 2020 and 2021 found that liver transplant patients with COVID-19 had a significantly higher risk for hospitalization but no higher risk for mortality, thrombosis, or ICU requirement, compared with patients with COVID-19 who had not undergone liver transplantation. Increased age and the presence of comorbidities were determinants of the severity of SARS-CoV-2 infection and of mortality among liver transplant recipients.

Clearly, more data are needed to address the influence of liver transplantation in patients with COVID-19; however, some risk/protective factors have been cited. For example, Belli and colleagues reported that the use of tacrolimus was associated with a better outcome. Conversely, baseline immunosuppression containing mycophenolate mofetil was an independent predictor of severe COVID-19 in liver transplant recipients.
 

Do COVID-19 vaccines work differently in patients with liver disease?

Unfortunately, we haven’t been able to address many of our patients’ questions related to vaccine efficacy, safety, and durability. Data are limited because immunocompromised patients were excluded from the phase 3 trials of the COVID-19 vaccines.

We also need greater clarity on the robustness of the response to these vaccines in liver transplant recipients. Rabinowich and colleagues evaluated humoral antibody responses after vaccination with the mRNA-based vaccine BNT162b2 (BioNTech/Pfizer) and confirmed lower immunogenicity in liver transplant recipients. Antibodies were detectable in only 48% of patients, compared with 100% of healthy controls; in addition, antibody titers were significantly lower. Unfortunately, there are no data on the correlation of protection from SARS-CoV-2 with antibody titers.

Additional data will be required to assess vaccine effectiveness in protecting against severe COVID-19 as well as to determine the magnitude of humoral vaccine responses in recipients treated with high-dose steroids and mycophenolate mofetil. In addition, we eagerly await studies that determine whether booster doses are required.
 

What’s the bottom line?

In the face of the COVID-19 pandemic, our understanding of the impact on our patients remains a work in progress.

As we await more clarity, there are a few practical points of clinical relevance we take away from the literature, the recently released joint Statement on COVID-19 Vaccination in Solid Organ Transplant Recipients, and the American Association for the Study of Liver Diseases (AASLD) consensus statement. These suggest clinicians take the following steps:

• When assessing patients with SARS-CoV-2 infection and elevated AST and ALT levels, the first objective is to rule out etiologies unrelated to COVID-19, specifically other viruses and drug-induced injury, as well as nonhepatic causes (e.g., myositis, cardiac injury, ischemia).
• Reduction in immunosuppression in SARS-CoV-2–infected patients with AIH should be considered carefully and generally undertaken only in those with severe illness.
• Pretransplant SARS-CoV-2 vaccination is recommended for all liver transplant candidates and liver transplant recipients as well as their household members and caregivers, to reduce exposure for these patients, along with continued adherence to protective measures (masking and social distancing).
• Continuation of a stable posttransplant immunosuppression regimen at the time of vaccination is recommended to avoid the risk for organ rejection until more comprehensive data are available.

For updated responses to the evolving guidelines, visit the AASLD’s resource center.
 

William F. Balistreri, MD, is the Dorothy M.M. Kersten Professor of Pediatrics; director emeritus, pediatric liver care center; medical director emeritus, liver transplantation; and professor, University of Cincinnati College of Medicine, department of pediatrics, Cincinnati Children’s Hospital Medical Center. He has served as director of the division of gastroenterology, hepatology and nutrition at Cincinnati Children’s for 25 years and frequently covers gastroenterology, liver, and nutrition-related topics for this news organization. Dr Balistreri is currently editor-in-chief of the Journal of Pediatrics, having previously served as editor-in-chief of several journals and textbooks. He also became the first pediatrician to act as president of the American Association for the Study of Liver Diseases. He has disclosed no relevant financial relationships.

References

1. Bloom PB et al. Hepatology. 2021 Mar;73:890-900.

2. Guan WJ et al. N Engl J Med. 2020 Apr;382:1708-20.

3. Chen N et al. Lancet. 2020 Feb;395:507-13.

4. Fan Z et al. Clin Gastroenterol Hepatol. 2020 Jun;18:1561-6.

5. Huang C et al. Lancet. 2020 Feb;395:497-506.

6. Xu L et al. Liver Int. 2020 May;40:998-1004.

7. Zhang C et al. Lancet Gastroenterol Hepatol. 2020 May;5:428-30.

8. Richardson S et al. JAMA. 2020 May;323:2052-9.

9. Phipps MM et al. Hepatology. 2020 Sep;72:807-17.

10. Ferm S et al. Clin Gastroenterol Hepatol. 2020 Sep;18:2378-9.

11. Hundt MA et al. Hepatology. 2020 Oct;72:1169-76.

12. Zhou YH et al. Pediatr Obes. 2020 Dec;15:e12723.

13. Kehar M et al. J Pediatr Gastroenterol Nutr. 2021 Jun;72:807-814.

14. Lu X et al. N Engl J Med. 2020 Apr;382:1663-5.

15. Cantor A et al. Hepatology. 2020 Nov;72:1522-7.

16. Kim D et al. Clin Gastroenterol Hepatol. 2021 Jul;19:1469-79.

17. Colmenero J et al. J Hepatol. 2021 Jan;74:148-155.

18. Lee BT et al. Gastroenterology. 2020 Sep;159:1176-8.e2.

19. Becchetti C et al. Gut. 2020 Oct;69:1832-40.

20. Belli LS et al. Lancet Gastroenterol Hepatol. 2020 Aug;5:724-5.

21. Bhoori S et al. Lancet Gastroenterol Hepatol. 2020 Jun;5:532-3.

22. Rabiee A et al; COLD Consortium. Hepatology. 2020 Dec;72:1900-11.

23. Belli LS et al. Gastroenterology. 2021 Mar;160:1151-63.e3.

24. Webb GJ et al. Lancet Gastroenterol Hepatol. 2020 Nov;5:1008-16.

25. Marjot T et al. J Hepatol. 2021 Mar;74:567-77.

A version of this article first appeared on Medscape.com.

For those of us treating patients with liver disease throughout the pandemic, we have anticipated evidence-based guidance regarding the contribution of specific liver disease phenotypes and immune suppression/transplantation on COVID-19 susceptibility and outcome. Now, data are emerging to help answer some of the major questions surrounding COVID-19 and the liver.

Does the virus itself cause liver disease?

The answer to this question is still a bit unclear. Multiple early reports^1-11 stated that hospitalized patients with SARS-CoV-2 infection frequently had elevated values on liver biochemistry tests. For example, the reported incidence of elevated serum aspartate aminotransferase (AST) or alanine aminotransferase (ALT) levels ranged from 14% to 83%, yet the magnitude of enzyme elevation was generally reported to be mild and normalized as COVID-19 symptoms improved.

Unsurprisingly, patients with severe liver injury (defined as AST and ALT levels more than five times the upper limit of normal) were more likely to have a complicated clinical course, including having elevated inflammatory markers and requiring intensive care unit admission, renal replacement therapy, and/or intubation. Currier and colleagues reported that patients with COVID-19 who had elevated AST and ALT levels had significantly higher odds of these same adverse outcomes and death.

This reflects the multifactorial pathogenesis of enzyme elevation, including a direct injurious effect of the virus on hepatocytes, cytokine or immune-mediated liver damage, drug hepatoxicity, or hypoxia and systemic inflammation.

Pellegrini and colleagues reported that 7% of patients infected with SARS-CoV-2 developed acute liver failure during their hospitalization, with a resulting mortality rate of 74%. Wagner and colleagues suggested that the pattern of peak elevated enzyme elevation was prognostic of severe clinical outcomes in hospitalized patients with COVID-19. Patients with a predominantly mixed pattern (AST/ALT and alkaline phosphatase elevations) had worse outcomes than those with a hepatocellular phenotype (isolated AST and/or ALT elevation).

Severe liver injury associated with SARS-CoV-2 infection is uncommon in children. However, elevated AST and ALT levels may be seen in association with multisystem inflammatory syndrome.^12-15
 

Are patients with preexisting chronic liver disease more susceptible to adverse outcomes?

Early observations suggested that patients with chronic liver disease, such as cirrhosis, who acquire SARS-CoV-2 have high rates of hospitalization and mortality. However, it is unclear whether all such patients are affected or whether certain subgroups are at higher risk.

In results that they hoped would allow for better risk stratification and personalization of care, Kim and colleagues reported that patients with alcohol-related liver disease, decompensated cirrhosis, and hepatocellular carcinoma have the highest risk for all-cause mortality from COVID-19. Separate presentations at Digestive Disease Week 2021 confirmed that patients with preexisting liver disease had a threefold higher rate of mortality, thromboembolism, acute respiratory distress syndrome, and a severe COVID-19 disease course, and that patients with both COVID-19 and cirrhosis had significantly higher rates of mortality (18% vs. 13%), ICU admission (46% vs. 34%), and longer lengths of stay than those without cirrhosis.

Nonalcoholic fatty liver disease (NAFLD) is currently the most common chronic liver disease, and its impact on the course of SARS-CoV-2 infection (and vice versa) is controversial. However, metabolic risk factors, such as obesity, diabetes mellitus, and hypertension, are known to be associated with severe illness from COVID-19. It was also reported that hepatic steatosis was associated with worse outcomes in patients with liver injury and SARS-CoV-2 infection, and that a higher proportion of patients with NAFLD required mechanical ventilation during their hospital course (47% vs. 17%) and had increased mortality (41% vs. 17%).
 

Do immunosuppressed patients face unique risks from infection?

Data from a limited case series, patient registries, and multicenter international studies have indicated that the clinical outcome of SARS-CoV-2 infection in adults with autoimmune hepatitis (AIH) was comparable to that noted in nonimmunosuppressed persons. However, it has also been suggested that a more complicated relationship exists between this virus and autoimmunity because immunosuppression may actually protect against the inappropriate immune response, or cytokine storm, engendered during severe SARS-CoV-2 infection.

The complexity of this relationship is further illustrated by a report from Bril and colleagues that described a case of AIH that developed after a patient had received a COVID-19 vaccine. The authors were careful to state that a causal relationship between receipt of the vaccine and the onset of AIH cannot be proven.
 

What’s the impact on liver transplant recipients?

Findings are limited regarding clinical outcomes and disease severity of SARS-CoV-2 infection in liver transplant recipients, but initial reports raised concern for high rates of adverse outcomes.^16-25

Tien and colleagues reported an increased risk for COVID-related death among liver transplant recipients. Separate international multicenter studies published in 2020 and 2021 found that liver transplant patients with COVID-19 had a significantly higher risk for hospitalization but no higher risk for mortality, thrombosis, or ICU requirement, compared with patients with COVID-19 who had not undergone liver transplantation. Increased age and the presence of comorbidities were determinants of the severity of SARS-CoV-2 infection and of mortality among liver transplant recipients.

Clearly, more data are needed to address the influence of liver transplantation in patients with COVID-19; however, some risk/protective factors have been cited. For example, Belli and colleagues reported that the use of tacrolimus was associated with a better outcome. Conversely, baseline immunosuppression containing mycophenolate mofetil was an independent predictor of severe COVID-19 in liver transplant recipients.
 

Do COVID-19 vaccines work differently in patients with liver disease?

Unfortunately, we haven’t been able to address many of our patients’ questions related to vaccine efficacy, safety, and durability. Data are limited because immunocompromised patients were excluded from the phase 3 trials of the COVID-19 vaccines.

We also need greater clarity on the robustness of the response to these vaccines in liver transplant recipients. Rabinowich and colleagues evaluated humoral antibody responses after vaccination with the mRNA-based vaccine BNT162b2 (BioNTech/Pfizer) and confirmed lower immunogenicity in liver transplant recipients. Antibodies were detectable in only 48% of patients, compared with 100% of healthy controls; in addition, antibody titers were significantly lower. Unfortunately, there are no data on the correlation of protection from SARS-CoV-2 with antibody titers.

Additional data will be required to assess vaccine effectiveness in protecting against severe COVID-19 as well as to determine the magnitude of humoral vaccine responses in recipients treated with high-dose steroids and mycophenolate mofetil. In addition, we eagerly await studies that determine whether booster doses are required.
 

What’s the bottom line?

In the face of the COVID-19 pandemic, our understanding of the impact on our patients remains a work in progress.

As we await more clarity, there are a few practical points of clinical relevance we take away from the literature, the recently released joint Statement on COVID-19 Vaccination in Solid Organ Transplant Recipients, and the American Association for the Study of Liver Diseases (AASLD) consensus statement. These suggest clinicians take the following steps:

• When assessing patients with SARS-CoV-2 infection and elevated AST and ALT levels, the first objective is to rule out etiologies unrelated to COVID-19, specifically other viruses and drug-induced injury, as well as nonhepatic causes (e.g., myositis, cardiac injury, ischemia).
• Reduction in immunosuppression in SARS-CoV-2–infected patients with AIH should be considered carefully and generally undertaken only in those with severe illness.
• Pretransplant SARS-CoV-2 vaccination is recommended for all liver transplant candidates and liver transplant recipients as well as their household members and caregivers, to reduce exposure for these patients, along with continued adherence to protective measures (masking and social distancing).
• Continuation of a stable posttransplant immunosuppression regimen at the time of vaccination is recommended to avoid the risk for organ rejection until more comprehensive data are available.

For updated responses to the evolving guidelines, visit the AASLD’s resource center.
 

William F. Balistreri, MD, is the Dorothy M.M. Kersten Professor of Pediatrics; director emeritus, pediatric liver care center; medical director emeritus, liver transplantation; and professor, University of Cincinnati College of Medicine, department of pediatrics, Cincinnati Children’s Hospital Medical Center. He has served as director of the division of gastroenterology, hepatology and nutrition at Cincinnati Children’s for 25 years and frequently covers gastroenterology, liver, and nutrition-related topics for this news organization. Dr Balistreri is currently editor-in-chief of the Journal of Pediatrics, having previously served as editor-in-chief of several journals and textbooks. He also became the first pediatrician to act as president of the American Association for the Study of Liver Diseases. He has disclosed no relevant financial relationships.

References

1. Bloom PB et al. Hepatology. 2021 Mar;73:890-900.

2. Guan WJ et al. N Engl J Med. 2020 Apr;382:1708-20.

3. Chen N et al. Lancet. 2020 Feb;395:507-13.

4. Fan Z et al. Clin Gastroenterol Hepatol. 2020 Jun;18:1561-6.

5. Huang C et al. Lancet. 2020 Feb;395:497-506.

6. Xu L et al. Liver Int. 2020 May;40:998-1004.

7. Zhang C et al. Lancet Gastroenterol Hepatol. 2020 May;5:428-30.

8. Richardson S et al. JAMA. 2020 May;323:2052-9.

9. Phipps MM et al. Hepatology. 2020 Sep;72:807-17.

10. Ferm S et al. Clin Gastroenterol Hepatol. 2020 Sep;18:2378-9.

11. Hundt MA et al. Hepatology. 2020 Oct;72:1169-76.

12. Zhou YH et al. Pediatr Obes. 2020 Dec;15:e12723.

13. Kehar M et al. J Pediatr Gastroenterol Nutr. 2021 Jun;72:807-814.

14. Lu X et al. N Engl J Med. 2020 Apr;382:1663-5.

15. Cantor A et al. Hepatology. 2020 Nov;72:1522-7.

16. Kim D et al. Clin Gastroenterol Hepatol. 2021 Jul;19:1469-79.

17. Colmenero J et al. J Hepatol. 2021 Jan;74:148-155.

18. Lee BT et al. Gastroenterology. 2020 Sep;159:1176-8.e2.

19. Becchetti C et al. Gut. 2020 Oct;69:1832-40.

20. Belli LS et al. Lancet Gastroenterol Hepatol. 2020 Aug;5:724-5.

21. Bhoori S et al. Lancet Gastroenterol Hepatol. 2020 Jun;5:532-3.

22. Rabiee A et al; COLD Consortium. Hepatology. 2020 Dec;72:1900-11.

23. Belli LS et al. Gastroenterology. 2021 Mar;160:1151-63.e3.

24. Webb GJ et al. Lancet Gastroenterol Hepatol. 2020 Nov;5:1008-16.

25. Marjot T et al. J Hepatol. 2021 Mar;74:567-77.

A version of this article first appeared on Medscape.com.

For those of us treating patients with liver disease throughout the pandemic, we have anticipated evidence-based guidance regarding the contribution of specific liver disease phenotypes and immune suppression/transplantation on COVID-19 susceptibility and outcome. Now, data are emerging to help answer some of the major questions surrounding COVID-19 and the liver.

Does the virus itself cause liver disease?

The answer to this question is still a bit unclear. Multiple early reports^1-11 stated that hospitalized patients with SARS-CoV-2 infection frequently had elevated values on liver biochemistry tests. For example, the reported incidence of elevated serum aspartate aminotransferase (AST) or alanine aminotransferase (ALT) levels ranged from 14% to 83%, yet the magnitude of enzyme elevation was generally reported to be mild and normalized as COVID-19 symptoms improved.

Unsurprisingly, patients with severe liver injury (defined as AST and ALT levels more than five times the upper limit of normal) were more likely to have a complicated clinical course, including having elevated inflammatory markers and requiring intensive care unit admission, renal replacement therapy, and/or intubation. Currier and colleagues reported that patients with COVID-19 who had elevated AST and ALT levels had significantly higher odds of these same adverse outcomes and death.

This reflects the multifactorial pathogenesis of enzyme elevation, including a direct injurious effect of the virus on hepatocytes, cytokine or immune-mediated liver damage, drug hepatoxicity, or hypoxia and systemic inflammation.

Pellegrini and colleagues reported that 7% of patients infected with SARS-CoV-2 developed acute liver failure during their hospitalization, with a resulting mortality rate of 74%. Wagner and colleagues suggested that the pattern of peak elevated enzyme elevation was prognostic of severe clinical outcomes in hospitalized patients with COVID-19. Patients with a predominantly mixed pattern (AST/ALT and alkaline phosphatase elevations) had worse outcomes than those with a hepatocellular phenotype (isolated AST and/or ALT elevation).

Severe liver injury associated with SARS-CoV-2 infection is uncommon in children. However, elevated AST and ALT levels may be seen in association with multisystem inflammatory syndrome.^12-15
 

Are patients with preexisting chronic liver disease more susceptible to adverse outcomes?

Early observations suggested that patients with chronic liver disease, such as cirrhosis, who acquire SARS-CoV-2 have high rates of hospitalization and mortality. However, it is unclear whether all such patients are affected or whether certain subgroups are at higher risk.

In results that they hoped would allow for better risk stratification and personalization of care, Kim and colleagues reported that patients with alcohol-related liver disease, decompensated cirrhosis, and hepatocellular carcinoma have the highest risk for all-cause mortality from COVID-19. Separate presentations at Digestive Disease Week 2021 confirmed that patients with preexisting liver disease had a threefold higher rate of mortality, thromboembolism, acute respiratory distress syndrome, and a severe COVID-19 disease course, and that patients with both COVID-19 and cirrhosis had significantly higher rates of mortality (18% vs. 13%), ICU admission (46% vs. 34%), and longer lengths of stay than those without cirrhosis.

Nonalcoholic fatty liver disease (NAFLD) is currently the most common chronic liver disease, and its impact on the course of SARS-CoV-2 infection (and vice versa) is controversial. However, metabolic risk factors, such as obesity, diabetes mellitus, and hypertension, are known to be associated with severe illness from COVID-19. It was also reported that hepatic steatosis was associated with worse outcomes in patients with liver injury and SARS-CoV-2 infection, and that a higher proportion of patients with NAFLD required mechanical ventilation during their hospital course (47% vs. 17%) and had increased mortality (41% vs. 17%).
 

Do immunosuppressed patients face unique risks from infection?

Data from a limited case series, patient registries, and multicenter international studies have indicated that the clinical outcome of SARS-CoV-2 infection in adults with autoimmune hepatitis (AIH) was comparable to that noted in nonimmunosuppressed persons. However, it has also been suggested that a more complicated relationship exists between this virus and autoimmunity because immunosuppression may actually protect against the inappropriate immune response, or cytokine storm, engendered during severe SARS-CoV-2 infection.

The complexity of this relationship is further illustrated by a report from Bril and colleagues that described a case of AIH that developed after a patient had received a COVID-19 vaccine. The authors were careful to state that a causal relationship between receipt of the vaccine and the onset of AIH cannot be proven.
 

What’s the impact on liver transplant recipients?

Findings are limited regarding clinical outcomes and disease severity of SARS-CoV-2 infection in liver transplant recipients, but initial reports raised concern for high rates of adverse outcomes.^16-25

Tien and colleagues reported an increased risk for COVID-related death among liver transplant recipients. Separate international multicenter studies published in 2020 and 2021 found that liver transplant patients with COVID-19 had a significantly higher risk for hospitalization but no higher risk for mortality, thrombosis, or ICU requirement, compared with patients with COVID-19 who had not undergone liver transplantation. Increased age and the presence of comorbidities were determinants of the severity of SARS-CoV-2 infection and of mortality among liver transplant recipients.

Clearly, more data are needed to address the influence of liver transplantation in patients with COVID-19; however, some risk/protective factors have been cited. For example, Belli and colleagues reported that the use of tacrolimus was associated with a better outcome. Conversely, baseline immunosuppression containing mycophenolate mofetil was an independent predictor of severe COVID-19 in liver transplant recipients.
 

Do COVID-19 vaccines work differently in patients with liver disease?

Unfortunately, we haven’t been able to address many of our patients’ questions related to vaccine efficacy, safety, and durability. Data are limited because immunocompromised patients were excluded from the phase 3 trials of the COVID-19 vaccines.

We also need greater clarity on the robustness of the response to these vaccines in liver transplant recipients. Rabinowich and colleagues evaluated humoral antibody responses after vaccination with the mRNA-based vaccine BNT162b2 (BioNTech/Pfizer) and confirmed lower immunogenicity in liver transplant recipients. Antibodies were detectable in only 48% of patients, compared with 100% of healthy controls; in addition, antibody titers were significantly lower. Unfortunately, there are no data on the correlation of protection from SARS-CoV-2 with antibody titers.

Additional data will be required to assess vaccine effectiveness in protecting against severe COVID-19 as well as to determine the magnitude of humoral vaccine responses in recipients treated with high-dose steroids and mycophenolate mofetil. In addition, we eagerly await studies that determine whether booster doses are required.
 

What’s the bottom line?

In the face of the COVID-19 pandemic, our understanding of the impact on our patients remains a work in progress.

As we await more clarity, there are a few practical points of clinical relevance we take away from the literature, the recently released joint Statement on COVID-19 Vaccination in Solid Organ Transplant Recipients, and the American Association for the Study of Liver Diseases (AASLD) consensus statement. These suggest clinicians take the following steps:

• When assessing patients with SARS-CoV-2 infection and elevated AST and ALT levels, the first objective is to rule out etiologies unrelated to COVID-19, specifically other viruses and drug-induced injury, as well as nonhepatic causes (e.g., myositis, cardiac injury, ischemia).
• Reduction in immunosuppression in SARS-CoV-2–infected patients with AIH should be considered carefully and generally undertaken only in those with severe illness.
• Pretransplant SARS-CoV-2 vaccination is recommended for all liver transplant candidates and liver transplant recipients as well as their household members and caregivers, to reduce exposure for these patients, along with continued adherence to protective measures (masking and social distancing).
• Continuation of a stable posttransplant immunosuppression regimen at the time of vaccination is recommended to avoid the risk for organ rejection until more comprehensive data are available.

For updated responses to the evolving guidelines, visit the AASLD’s resource center.
 

William F. Balistreri, MD, is the Dorothy M.M. Kersten Professor of Pediatrics; director emeritus, pediatric liver care center; medical director emeritus, liver transplantation; and professor, University of Cincinnati College of Medicine, department of pediatrics, Cincinnati Children’s Hospital Medical Center. He has served as director of the division of gastroenterology, hepatology and nutrition at Cincinnati Children’s for 25 years and frequently covers gastroenterology, liver, and nutrition-related topics for this news organization. Dr Balistreri is currently editor-in-chief of the Journal of Pediatrics, having previously served as editor-in-chief of several journals and textbooks. He also became the first pediatrician to act as president of the American Association for the Study of Liver Diseases. He has disclosed no relevant financial relationships.

References

1. Bloom PB et al. Hepatology. 2021 Mar;73:890-900.

2. Guan WJ et al. N Engl J Med. 2020 Apr;382:1708-20.

3. Chen N et al. Lancet. 2020 Feb;395:507-13.

4. Fan Z et al. Clin Gastroenterol Hepatol. 2020 Jun;18:1561-6.

5. Huang C et al. Lancet. 2020 Feb;395:497-506.

6. Xu L et al. Liver Int. 2020 May;40:998-1004.

7. Zhang C et al. Lancet Gastroenterol Hepatol. 2020 May;5:428-30.

8. Richardson S et al. JAMA. 2020 May;323:2052-9.

9. Phipps MM et al. Hepatology. 2020 Sep;72:807-17.

10. Ferm S et al. Clin Gastroenterol Hepatol. 2020 Sep;18:2378-9.

11. Hundt MA et al. Hepatology. 2020 Oct;72:1169-76.

12. Zhou YH et al. Pediatr Obes. 2020 Dec;15:e12723.

13. Kehar M et al. J Pediatr Gastroenterol Nutr. 2021 Jun;72:807-814.

14. Lu X et al. N Engl J Med. 2020 Apr;382:1663-5.

15. Cantor A et al. Hepatology. 2020 Nov;72:1522-7.

16. Kim D et al. Clin Gastroenterol Hepatol. 2021 Jul;19:1469-79.

17. Colmenero J et al. J Hepatol. 2021 Jan;74:148-155.

18. Lee BT et al. Gastroenterology. 2020 Sep;159:1176-8.e2.

19. Becchetti C et al. Gut. 2020 Oct;69:1832-40.

20. Belli LS et al. Lancet Gastroenterol Hepatol. 2020 Aug;5:724-5.

21. Bhoori S et al. Lancet Gastroenterol Hepatol. 2020 Jun;5:532-3.

22. Rabiee A et al; COLD Consortium. Hepatology. 2020 Dec;72:1900-11.

23. Belli LS et al. Gastroenterology. 2021 Mar;160:1151-63.e3.

24. Webb GJ et al. Lancet Gastroenterol Hepatol. 2020 Nov;5:1008-16.

25. Marjot T et al. J Hepatol. 2021 Mar;74:567-77.

A version of this article first appeared on Medscape.com.

Emergency responders to the World Trade Center (WTC) attack in 2001 paid a significant physical cost for their service in the form of exposure to chemicals, dust, and airborne particulates causally linked to hepatotoxicity. As we near the 20th anniversary of these attacks, researchers have determined that those responders who arrived at the WTC site earlier have a significantly higher prevalence of hepatic steatosis compared with those who arrived in the days that followed.

U.S. Army Corps of Engineers file photo

“This research is some of the first to suggest that there may be a link between the amount of exposure experienced by responders to the WTC site and the higher likelihood of excessive accumulation of fat in their livers,” study author Artit Jirapatnakul, PhD, of Icahn School of Medicine at Mount Sinai, New York, said in an interview. These findings were published in the American Journal of Industrial Medicine.

The excessive accumulation of liver fat is an indicator of liver injury, which can also predict subsequent future disease, such as cirrhosis, liver failure, and liver cancer.

Dr. Jirapatnakul said that arrival time to the WTC disaster may prove an important factor for predicting the risk of liver disease in this population and directing treatment to them accordingly.

“By identifying individuals with markers of liver injury, such as excess fat, we can offer referral to liver specialists and thereby open the door to early treatment,” he said.

“Our most important message is that many liver diseases can be treated if caught early,” Dr. Jirapatnakul added. “Early detection requires proactive monitoring because most liver diseases have few, if any, symptoms during the early stages.”

More than 20,000 men and women who responded to the WTC site on Sept. 11, 2001, were exposed to particulate matter and chemicals known to cause liver damage and increase the risk of toxicant‐associated fatty liver disease. These responders have been offered screening and treatment of different conditions associated with the attack, including CT lung cancer screening for those meeting age and smoking status criteria.
 

Measuring the impact of response time on the liver

To investigate the dose-response association between WTC site exposure intensity and the risk of hepatic steatosis, Dr. Jirapatnakul and colleagues reviewed low-dose CT chest scans of all participants in the WTC General Responders Cohort (GRC) who had available laboratory data within a 12-month period from their first scan following the Sept. 11, 2001, attack. Only CT chest scans performed between Sept. 11, 2001, and Dec. 31, 2018, were collected and reviewed in the study.

A total of 1,788 WTC responders were included (83.7% were male; mean age at time of attack, 42.5 years). Up to 56% of WTC responders in the study were White, and 20.4% of responders were current smokers. The mean body mass index of the group was 30.1 kg/m².

The investigators stratified dust exposure into five groups according to when the responders arrived at the WTC site: Sept. 11, 2001, in the dust cloud; Sept. 11, no dust cloud (same-day arrival); Sept. 12 or 13 (second‐ and third‐day arrival); Sept. 14 to the end of September (fourth‐day arrival); and October and beyond.

The median duration between Sept. 11, 2001, and the earliest available CT scan was 11.3 years. Liver density was measured via Statistics‐based Liver Density Estimation from Imaging, a previously validated algorithm, with a slice thickness of 1.25 mm or below. On their earliest CT, approximately 14.4% (n = 258) of responders had liver attenuation < 40 Hounsfield units (HU). The prevalence of liver attenuation < 40 HU was 17% for responders who arrived on the day of the attack, 16% for responders who arrived at the site on Sept. 12 or 13, 10.9% for responders who arrived Sept. 14 through 30, and 9% for responders who arrived at the WTC site on Oct. 1, 2001, or later (P =.0015).

There was a statistically significant trend of increasing liver steatosis with earlier times of arrival (P <.0001). The WTC arrival time retained its status as a significant independent factor for decreased liver attenuation in an analysis adjusted for sex, age, race, smoking status, alcohol use, body mass index, diabetes, gastroesophageal reflux disease, and forced expiratory volume in 1 second.

Dr. Jirapatnakul said that the next step will be to determine whether WTC responders with excessive liver fat also have increased liver scarring. In addition, he and his colleagues are working to establish a registry to collect information on the impact of liver disease as it relates to quality of life in members of the WTC GRC.
 

Importance of disease severity

Another direction of future research will be to differentiate between those with only hepatic steatosis, those with inflammation from hepatic steatosis (steatohepatitis), and those with hepatic fibrosis which is the most concerning outcome from fatty liver diseases, according to Albert Do, MD, clinical director of the fatty liver disease program at Yale University, New Haven, Conn.

“It is the latter group of patients which we are most concerned about, given this is the group at highest risk for harm from liver disease,” added Dr. Do, who wasn’t involved in the research study. “The degree of steatosis is not closely linked with subsequent inflammation nor hepatic fibrosis, and so linkage of disease severity to specific occupational exposures and timing is needed to determine the allocation of support for patients who had suffered harm from fatty liver disease.”

Dr. Do noted that additional research will also need to identify the specific exposure that may be causing hepatic steatosis in early WTC responders. “Currently, only a small number of medications are known to cause this,” he explained, “and thus such knowledge will help us further understand occupational exposures and their associated risks.”

The researchers received study funding from the National Institute for Occupational Safety and Health. They disclosed conflicts of interest with Genentech, AstraZeneca, Pfizer, Bayer Healthcare, Gilead Sciences, and Boehringer Ingelheim. Dr. Do had no conflicts to declare.

Emergency responders to the World Trade Center (WTC) attack in 2001 paid a significant physical cost for their service in the form of exposure to chemicals, dust, and airborne particulates causally linked to hepatotoxicity. As we near the 20th anniversary of these attacks, researchers have determined that those responders who arrived at the WTC site earlier have a significantly higher prevalence of hepatic steatosis compared with those who arrived in the days that followed.

U.S. Army Corps of Engineers file photo

“This research is some of the first to suggest that there may be a link between the amount of exposure experienced by responders to the WTC site and the higher likelihood of excessive accumulation of fat in their livers,” study author Artit Jirapatnakul, PhD, of Icahn School of Medicine at Mount Sinai, New York, said in an interview. These findings were published in the American Journal of Industrial Medicine.

The excessive accumulation of liver fat is an indicator of liver injury, which can also predict subsequent future disease, such as cirrhosis, liver failure, and liver cancer.

Dr. Jirapatnakul said that arrival time to the WTC disaster may prove an important factor for predicting the risk of liver disease in this population and directing treatment to them accordingly.

“By identifying individuals with markers of liver injury, such as excess fat, we can offer referral to liver specialists and thereby open the door to early treatment,” he said.

“Our most important message is that many liver diseases can be treated if caught early,” Dr. Jirapatnakul added. “Early detection requires proactive monitoring because most liver diseases have few, if any, symptoms during the early stages.”

More than 20,000 men and women who responded to the WTC site on Sept. 11, 2001, were exposed to particulate matter and chemicals known to cause liver damage and increase the risk of toxicant‐associated fatty liver disease. These responders have been offered screening and treatment of different conditions associated with the attack, including CT lung cancer screening for those meeting age and smoking status criteria.
 

Measuring the impact of response time on the liver

To investigate the dose-response association between WTC site exposure intensity and the risk of hepatic steatosis, Dr. Jirapatnakul and colleagues reviewed low-dose CT chest scans of all participants in the WTC General Responders Cohort (GRC) who had available laboratory data within a 12-month period from their first scan following the Sept. 11, 2001, attack. Only CT chest scans performed between Sept. 11, 2001, and Dec. 31, 2018, were collected and reviewed in the study.

A total of 1,788 WTC responders were included (83.7% were male; mean age at time of attack, 42.5 years). Up to 56% of WTC responders in the study were White, and 20.4% of responders were current smokers. The mean body mass index of the group was 30.1 kg/m².

The investigators stratified dust exposure into five groups according to when the responders arrived at the WTC site: Sept. 11, 2001, in the dust cloud; Sept. 11, no dust cloud (same-day arrival); Sept. 12 or 13 (second‐ and third‐day arrival); Sept. 14 to the end of September (fourth‐day arrival); and October and beyond.

The median duration between Sept. 11, 2001, and the earliest available CT scan was 11.3 years. Liver density was measured via Statistics‐based Liver Density Estimation from Imaging, a previously validated algorithm, with a slice thickness of 1.25 mm or below. On their earliest CT, approximately 14.4% (n = 258) of responders had liver attenuation < 40 Hounsfield units (HU). The prevalence of liver attenuation < 40 HU was 17% for responders who arrived on the day of the attack, 16% for responders who arrived at the site on Sept. 12 or 13, 10.9% for responders who arrived Sept. 14 through 30, and 9% for responders who arrived at the WTC site on Oct. 1, 2001, or later (P =.0015).

There was a statistically significant trend of increasing liver steatosis with earlier times of arrival (P <.0001). The WTC arrival time retained its status as a significant independent factor for decreased liver attenuation in an analysis adjusted for sex, age, race, smoking status, alcohol use, body mass index, diabetes, gastroesophageal reflux disease, and forced expiratory volume in 1 second.

Dr. Jirapatnakul said that the next step will be to determine whether WTC responders with excessive liver fat also have increased liver scarring. In addition, he and his colleagues are working to establish a registry to collect information on the impact of liver disease as it relates to quality of life in members of the WTC GRC.
 

Importance of disease severity

Another direction of future research will be to differentiate between those with only hepatic steatosis, those with inflammation from hepatic steatosis (steatohepatitis), and those with hepatic fibrosis which is the most concerning outcome from fatty liver diseases, according to Albert Do, MD, clinical director of the fatty liver disease program at Yale University, New Haven, Conn.

“It is the latter group of patients which we are most concerned about, given this is the group at highest risk for harm from liver disease,” added Dr. Do, who wasn’t involved in the research study. “The degree of steatosis is not closely linked with subsequent inflammation nor hepatic fibrosis, and so linkage of disease severity to specific occupational exposures and timing is needed to determine the allocation of support for patients who had suffered harm from fatty liver disease.”

Dr. Do noted that additional research will also need to identify the specific exposure that may be causing hepatic steatosis in early WTC responders. “Currently, only a small number of medications are known to cause this,” he explained, “and thus such knowledge will help us further understand occupational exposures and their associated risks.”

The researchers received study funding from the National Institute for Occupational Safety and Health. They disclosed conflicts of interest with Genentech, AstraZeneca, Pfizer, Bayer Healthcare, Gilead Sciences, and Boehringer Ingelheim. Dr. Do had no conflicts to declare.

Emergency responders to the World Trade Center (WTC) attack in 2001 paid a significant physical cost for their service in the form of exposure to chemicals, dust, and airborne particulates causally linked to hepatotoxicity. As we near the 20th anniversary of these attacks, researchers have determined that those responders who arrived at the WTC site earlier have a significantly higher prevalence of hepatic steatosis compared with those who arrived in the days that followed.

U.S. Army Corps of Engineers file photo

“This research is some of the first to suggest that there may be a link between the amount of exposure experienced by responders to the WTC site and the higher likelihood of excessive accumulation of fat in their livers,” study author Artit Jirapatnakul, PhD, of Icahn School of Medicine at Mount Sinai, New York, said in an interview. These findings were published in the American Journal of Industrial Medicine.

The excessive accumulation of liver fat is an indicator of liver injury, which can also predict subsequent future disease, such as cirrhosis, liver failure, and liver cancer.

Dr. Jirapatnakul said that arrival time to the WTC disaster may prove an important factor for predicting the risk of liver disease in this population and directing treatment to them accordingly.

“By identifying individuals with markers of liver injury, such as excess fat, we can offer referral to liver specialists and thereby open the door to early treatment,” he said.

“Our most important message is that many liver diseases can be treated if caught early,” Dr. Jirapatnakul added. “Early detection requires proactive monitoring because most liver diseases have few, if any, symptoms during the early stages.”

More than 20,000 men and women who responded to the WTC site on Sept. 11, 2001, were exposed to particulate matter and chemicals known to cause liver damage and increase the risk of toxicant‐associated fatty liver disease. These responders have been offered screening and treatment of different conditions associated with the attack, including CT lung cancer screening for those meeting age and smoking status criteria.
 

Measuring the impact of response time on the liver

To investigate the dose-response association between WTC site exposure intensity and the risk of hepatic steatosis, Dr. Jirapatnakul and colleagues reviewed low-dose CT chest scans of all participants in the WTC General Responders Cohort (GRC) who had available laboratory data within a 12-month period from their first scan following the Sept. 11, 2001, attack. Only CT chest scans performed between Sept. 11, 2001, and Dec. 31, 2018, were collected and reviewed in the study.

A total of 1,788 WTC responders were included (83.7% were male; mean age at time of attack, 42.5 years). Up to 56% of WTC responders in the study were White, and 20.4% of responders were current smokers. The mean body mass index of the group was 30.1 kg/m².

The investigators stratified dust exposure into five groups according to when the responders arrived at the WTC site: Sept. 11, 2001, in the dust cloud; Sept. 11, no dust cloud (same-day arrival); Sept. 12 or 13 (second‐ and third‐day arrival); Sept. 14 to the end of September (fourth‐day arrival); and October and beyond.

The median duration between Sept. 11, 2001, and the earliest available CT scan was 11.3 years. Liver density was measured via Statistics‐based Liver Density Estimation from Imaging, a previously validated algorithm, with a slice thickness of 1.25 mm or below. On their earliest CT, approximately 14.4% (n = 258) of responders had liver attenuation < 40 Hounsfield units (HU). The prevalence of liver attenuation < 40 HU was 17% for responders who arrived on the day of the attack, 16% for responders who arrived at the site on Sept. 12 or 13, 10.9% for responders who arrived Sept. 14 through 30, and 9% for responders who arrived at the WTC site on Oct. 1, 2001, or later (P =.0015).

There was a statistically significant trend of increasing liver steatosis with earlier times of arrival (P <.0001). The WTC arrival time retained its status as a significant independent factor for decreased liver attenuation in an analysis adjusted for sex, age, race, smoking status, alcohol use, body mass index, diabetes, gastroesophageal reflux disease, and forced expiratory volume in 1 second.

Dr. Jirapatnakul said that the next step will be to determine whether WTC responders with excessive liver fat also have increased liver scarring. In addition, he and his colleagues are working to establish a registry to collect information on the impact of liver disease as it relates to quality of life in members of the WTC GRC.
 

Importance of disease severity

Another direction of future research will be to differentiate between those with only hepatic steatosis, those with inflammation from hepatic steatosis (steatohepatitis), and those with hepatic fibrosis which is the most concerning outcome from fatty liver diseases, according to Albert Do, MD, clinical director of the fatty liver disease program at Yale University, New Haven, Conn.

“It is the latter group of patients which we are most concerned about, given this is the group at highest risk for harm from liver disease,” added Dr. Do, who wasn’t involved in the research study. “The degree of steatosis is not closely linked with subsequent inflammation nor hepatic fibrosis, and so linkage of disease severity to specific occupational exposures and timing is needed to determine the allocation of support for patients who had suffered harm from fatty liver disease.”

Dr. Do noted that additional research will also need to identify the specific exposure that may be causing hepatic steatosis in early WTC responders. “Currently, only a small number of medications are known to cause this,” he explained, “and thus such knowledge will help us further understand occupational exposures and their associated risks.”

The researchers received study funding from the National Institute for Occupational Safety and Health. They disclosed conflicts of interest with Genentech, AstraZeneca, Pfizer, Bayer Healthcare, Gilead Sciences, and Boehringer Ingelheim. Dr. Do had no conflicts to declare.

Ultrasonography screening intervals of less than 6-12 months were associated with early detection of hepatocellular carcinoma, as well as increased life expectancy and quality of life, according to data from a nationwide comparative effectiveness study of nearly 60,000 patients in Taiwan.

Many international societies, including the American Association for the Study of Liver Diseases, the Asian Pacific Association for the Study of the Liver, and the European Association for the Study of the Liver, recommend abdominal ultrasonography screening for hepatocellular carcinoma (HCC) with or without alpha-fetoprotein every 6 months for patients at increased risk for HCC, wrote Shih-Chiang Kuo, MD, of National Cheng Kung University, Tainan, Taiwan, and colleagues.

However, some studies do not support this recommendation, and data suggest that “adherence to regular screenings by high-risk patients has been inadequate, leading to reduced overall benefits of ultrasonography screening in real-world practice,” and the impact of screening schedules on quality of life has not been assessed, they said.

In a study published in JAMA Network Open, the researchers identified adults with newly diagnosed HCC from 2002 through 2015 using data from the Taiwan National Cancer Registry. Barcelona Clinic Liver Cancer (BCLC) staging information was available for 42,081 men and 17,113 women; the average age was 62 years for men and 69 years for women. The patients were divided into five cohorts based on the time between their last ultrasonography screening and an index date of 90 days before their HCC diagnosis. These groups were 6 months (0-6 months), 12 months (7-12 months), 24 months (13-24 months), 36 months (25-36 months), and longer than 36 months.

“For both sexes, the proportions of patients with HCC classified as being in earlier stages (stage 0 and A) were higher in subcohorts with shorter screening intervals since the most recent ultrasonography,” the researchers wrote.

The researchers also assessed quality of life measures using the European Quality of Life Five-Dimensions in 807 men (3,370 repeated assessments) and 252 women (1,044 repeated assessments). Among men, the loss of quality of life expectancy in terms of quality of life years (QALYs) was 10.0, 11.1, 12.1, 13.1, and 14.6 for screening intervals of 6 months, 12 months, 24 months, 36 months, and beyond 36 months, respectively. The corresponding QALYs for women at the same screening intervals were 9.0, 9.7, 10.3, 10.7, and 11.4, respectively.

In a subgroup analysis according to underlying liver disease, patients with underlying hepatitis B virus infection or cirrhosis showed the greatest benefits from shorter screening intervals. For those with hepatitis B virus infection, abdominal ultrasonography screening 6 months or less prior to diagnosis of HCC was associated with an additional 4.8 QALYs for men and 2.8 QALYs for women, compared with screening longer than 36 months prior to diagnosis. The corresponding savings in QALY for men and women with underlying cirrhosis was 4.8 QALYs and 2.4 QALYs. Patients with no underlying liver disease also benefited from shorter intervals, with potential savings of 3.2 QALYs for men and 1.6 QALYs for women in the 6-month screening groups, compared with the longer than 36 months groups.

However, less than half of the men overall underwent screening withing 6 months or 12 months before diagnosis (31.4% and 39.3%, respectively); for women, 42.2% received screening within 6 months of diagnosis and 51.9% received screening within 12 months.

The study findings were limited by several factors including the use of only the last screening before diagnosis, which allows the possibility that patients in the 6- or 12-month groups did not have regular screening, the researchers noted. In addition, the lack of data on quality of life for women with BCLC stage D might have caused an underestimation of quality of life loss, they said. However, the results were strengthened by the use of a national database and long follow-up period, they said.

The results support intervals of 6-12 months or less for regular ultrasonography screening as a way to improve early detection of HCC, “and may save lives and improve utility for patients with HCC from a lifetime perspective,” the researchers emphasized. “Because people with underlying risk factors (including hepatitis B virus or hepatitis C virus infection, cirrhosis, and alcoholic liver disease) showed only slightly more frequent ultrasonography screening than those without underlying risk factors, we recommend improving this clinical practice,” they concluded.
 

Impact of identifying risk

“This study is important because HCC remains the third leading cause of cancer deaths, and the 5-year survival rate is low,” said Atsushi Sakuraba, MD, of the University of Chicago, in an interview.

Dr. Sakuraba said that he was not surprised by any of the study findings. “Earlier diagnosis of cancer is often associated with improved outcome in many cancers,” he noted.

However, “Overutilization of resources may lead to increased health care costs, so correct identification of high-risk populations is needed,” Dr. Sakuraba said.

Additional research is warranted in several areas in order to make an impact on clinical practice, Dr. Sakuraba said, notably, “confirmation in other countries and ethnicities where the incidence of viral hepatitis varies.” Comparison to other tests, such as tumor markers, CT, and MRI, is needed as well, he concluded.

The study was supported by the Taiwan Ministry of Science and Technology. The researchers had no financial conflicts to disclose. Dr. Sakuraba had no financial conflicts to disclose.

Ultrasonography screening intervals of less than 6-12 months were associated with early detection of hepatocellular carcinoma, as well as increased life expectancy and quality of life, according to data from a nationwide comparative effectiveness study of nearly 60,000 patients in Taiwan.

Many international societies, including the American Association for the Study of Liver Diseases, the Asian Pacific Association for the Study of the Liver, and the European Association for the Study of the Liver, recommend abdominal ultrasonography screening for hepatocellular carcinoma (HCC) with or without alpha-fetoprotein every 6 months for patients at increased risk for HCC, wrote Shih-Chiang Kuo, MD, of National Cheng Kung University, Tainan, Taiwan, and colleagues.

However, some studies do not support this recommendation, and data suggest that “adherence to regular screenings by high-risk patients has been inadequate, leading to reduced overall benefits of ultrasonography screening in real-world practice,” and the impact of screening schedules on quality of life has not been assessed, they said.

In a study published in JAMA Network Open, the researchers identified adults with newly diagnosed HCC from 2002 through 2015 using data from the Taiwan National Cancer Registry. Barcelona Clinic Liver Cancer (BCLC) staging information was available for 42,081 men and 17,113 women; the average age was 62 years for men and 69 years for women. The patients were divided into five cohorts based on the time between their last ultrasonography screening and an index date of 90 days before their HCC diagnosis. These groups were 6 months (0-6 months), 12 months (7-12 months), 24 months (13-24 months), 36 months (25-36 months), and longer than 36 months.

“For both sexes, the proportions of patients with HCC classified as being in earlier stages (stage 0 and A) were higher in subcohorts with shorter screening intervals since the most recent ultrasonography,” the researchers wrote.

The researchers also assessed quality of life measures using the European Quality of Life Five-Dimensions in 807 men (3,370 repeated assessments) and 252 women (1,044 repeated assessments). Among men, the loss of quality of life expectancy in terms of quality of life years (QALYs) was 10.0, 11.1, 12.1, 13.1, and 14.6 for screening intervals of 6 months, 12 months, 24 months, 36 months, and beyond 36 months, respectively. The corresponding QALYs for women at the same screening intervals were 9.0, 9.7, 10.3, 10.7, and 11.4, respectively.

In a subgroup analysis according to underlying liver disease, patients with underlying hepatitis B virus infection or cirrhosis showed the greatest benefits from shorter screening intervals. For those with hepatitis B virus infection, abdominal ultrasonography screening 6 months or less prior to diagnosis of HCC was associated with an additional 4.8 QALYs for men and 2.8 QALYs for women, compared with screening longer than 36 months prior to diagnosis. The corresponding savings in QALY for men and women with underlying cirrhosis was 4.8 QALYs and 2.4 QALYs. Patients with no underlying liver disease also benefited from shorter intervals, with potential savings of 3.2 QALYs for men and 1.6 QALYs for women in the 6-month screening groups, compared with the longer than 36 months groups.

However, less than half of the men overall underwent screening withing 6 months or 12 months before diagnosis (31.4% and 39.3%, respectively); for women, 42.2% received screening within 6 months of diagnosis and 51.9% received screening within 12 months.

The study findings were limited by several factors including the use of only the last screening before diagnosis, which allows the possibility that patients in the 6- or 12-month groups did not have regular screening, the researchers noted. In addition, the lack of data on quality of life for women with BCLC stage D might have caused an underestimation of quality of life loss, they said. However, the results were strengthened by the use of a national database and long follow-up period, they said.

The results support intervals of 6-12 months or less for regular ultrasonography screening as a way to improve early detection of HCC, “and may save lives and improve utility for patients with HCC from a lifetime perspective,” the researchers emphasized. “Because people with underlying risk factors (including hepatitis B virus or hepatitis C virus infection, cirrhosis, and alcoholic liver disease) showed only slightly more frequent ultrasonography screening than those without underlying risk factors, we recommend improving this clinical practice,” they concluded.
 

Impact of identifying risk

“This study is important because HCC remains the third leading cause of cancer deaths, and the 5-year survival rate is low,” said Atsushi Sakuraba, MD, of the University of Chicago, in an interview.

Dr. Sakuraba said that he was not surprised by any of the study findings. “Earlier diagnosis of cancer is often associated with improved outcome in many cancers,” he noted.

However, “Overutilization of resources may lead to increased health care costs, so correct identification of high-risk populations is needed,” Dr. Sakuraba said.

Additional research is warranted in several areas in order to make an impact on clinical practice, Dr. Sakuraba said, notably, “confirmation in other countries and ethnicities where the incidence of viral hepatitis varies.” Comparison to other tests, such as tumor markers, CT, and MRI, is needed as well, he concluded.

The study was supported by the Taiwan Ministry of Science and Technology. The researchers had no financial conflicts to disclose. Dr. Sakuraba had no financial conflicts to disclose.

Ultrasonography screening intervals of less than 6-12 months were associated with early detection of hepatocellular carcinoma, as well as increased life expectancy and quality of life, according to data from a nationwide comparative effectiveness study of nearly 60,000 patients in Taiwan.

Many international societies, including the American Association for the Study of Liver Diseases, the Asian Pacific Association for the Study of the Liver, and the European Association for the Study of the Liver, recommend abdominal ultrasonography screening for hepatocellular carcinoma (HCC) with or without alpha-fetoprotein every 6 months for patients at increased risk for HCC, wrote Shih-Chiang Kuo, MD, of National Cheng Kung University, Tainan, Taiwan, and colleagues.

However, some studies do not support this recommendation, and data suggest that “adherence to regular screenings by high-risk patients has been inadequate, leading to reduced overall benefits of ultrasonography screening in real-world practice,” and the impact of screening schedules on quality of life has not been assessed, they said.

In a study published in JAMA Network Open, the researchers identified adults with newly diagnosed HCC from 2002 through 2015 using data from the Taiwan National Cancer Registry. Barcelona Clinic Liver Cancer (BCLC) staging information was available for 42,081 men and 17,113 women; the average age was 62 years for men and 69 years for women. The patients were divided into five cohorts based on the time between their last ultrasonography screening and an index date of 90 days before their HCC diagnosis. These groups were 6 months (0-6 months), 12 months (7-12 months), 24 months (13-24 months), 36 months (25-36 months), and longer than 36 months.

“For both sexes, the proportions of patients with HCC classified as being in earlier stages (stage 0 and A) were higher in subcohorts with shorter screening intervals since the most recent ultrasonography,” the researchers wrote.

The researchers also assessed quality of life measures using the European Quality of Life Five-Dimensions in 807 men (3,370 repeated assessments) and 252 women (1,044 repeated assessments). Among men, the loss of quality of life expectancy in terms of quality of life years (QALYs) was 10.0, 11.1, 12.1, 13.1, and 14.6 for screening intervals of 6 months, 12 months, 24 months, 36 months, and beyond 36 months, respectively. The corresponding QALYs for women at the same screening intervals were 9.0, 9.7, 10.3, 10.7, and 11.4, respectively.

In a subgroup analysis according to underlying liver disease, patients with underlying hepatitis B virus infection or cirrhosis showed the greatest benefits from shorter screening intervals. For those with hepatitis B virus infection, abdominal ultrasonography screening 6 months or less prior to diagnosis of HCC was associated with an additional 4.8 QALYs for men and 2.8 QALYs for women, compared with screening longer than 36 months prior to diagnosis. The corresponding savings in QALY for men and women with underlying cirrhosis was 4.8 QALYs and 2.4 QALYs. Patients with no underlying liver disease also benefited from shorter intervals, with potential savings of 3.2 QALYs for men and 1.6 QALYs for women in the 6-month screening groups, compared with the longer than 36 months groups.

However, less than half of the men overall underwent screening withing 6 months or 12 months before diagnosis (31.4% and 39.3%, respectively); for women, 42.2% received screening within 6 months of diagnosis and 51.9% received screening within 12 months.

The study findings were limited by several factors including the use of only the last screening before diagnosis, which allows the possibility that patients in the 6- or 12-month groups did not have regular screening, the researchers noted. In addition, the lack of data on quality of life for women with BCLC stage D might have caused an underestimation of quality of life loss, they said. However, the results were strengthened by the use of a national database and long follow-up period, they said.

The results support intervals of 6-12 months or less for regular ultrasonography screening as a way to improve early detection of HCC, “and may save lives and improve utility for patients with HCC from a lifetime perspective,” the researchers emphasized. “Because people with underlying risk factors (including hepatitis B virus or hepatitis C virus infection, cirrhosis, and alcoholic liver disease) showed only slightly more frequent ultrasonography screening than those without underlying risk factors, we recommend improving this clinical practice,” they concluded.
 

Impact of identifying risk

“This study is important because HCC remains the third leading cause of cancer deaths, and the 5-year survival rate is low,” said Atsushi Sakuraba, MD, of the University of Chicago, in an interview.

Dr. Sakuraba said that he was not surprised by any of the study findings. “Earlier diagnosis of cancer is often associated with improved outcome in many cancers,” he noted.

However, “Overutilization of resources may lead to increased health care costs, so correct identification of high-risk populations is needed,” Dr. Sakuraba said.

Additional research is warranted in several areas in order to make an impact on clinical practice, Dr. Sakuraba said, notably, “confirmation in other countries and ethnicities where the incidence of viral hepatitis varies.” Comparison to other tests, such as tumor markers, CT, and MRI, is needed as well, he concluded.

The study was supported by the Taiwan Ministry of Science and Technology. The researchers had no financial conflicts to disclose. Dr. Sakuraba had no financial conflicts to disclose.

A multidisciplinary panel of U.S. experts released a “Call to Action” for improved screening, diagnosis, and treatment of patients with nonalcoholic steatohepatitis (NASH) and nonalcoholic fatty liver disease (NAFLD) on July 26, an effort organized by the American Gastroenterological Association in collaboration with seven other U.S. medical organizations including several endocrinology groups.

The published statement, “Preparing for the NASH Epidemic: A Call to Action,” proposes several urgent steps for the U.S. clinical community to provide better-focused and better-coordinated care for patients at risk for developing or having NAFLD or NASH, particularly among “emerging” at-risk cohorts such as patients with diabetes and obesity. It appears in the journals Gastroenterology, Diabetes Care, Metabolism: Clinical and Experimental, and Obesity.

The statement’s central pitch is that improvements in care won’t be possible unless the several medical specialties that deal with affected or at-risk patients stop working “in separate silos,” and instead create “a collective action plan,” and also organize multidisciplinary teams that “integrate primary care, hepatology, obesity medicine, endocrinology, and diabetology via well-defined care pathways.”

“The overarching goal” is a “unified, international public health response to NAFLD and NASH,” said the statement, which stemmed from a conference held in July 2020 that included representatives from not only the lead gastroenterology group but also the American Diabetes Association, the American Association for the Study of Liver Diseases, the American Association of Clinical Endocrinologists, The Endocrine Society, The American Academy of Family Physicians, The Obesity Society, and the American College of Osteopathic Family Physicians.

The statement cites sobering prevalence numbers, with estimates that NAFLD exists in more than half the patients with type 2 diabetes, while NASH affects about a third, rates that translate into many millions of affected Americans, given recent estimates that the U.S. prevalence of type 2 diabetes exceeds 30 million people. And the numbers continue to rise along with increases in the prevalence of obesity and type 2 diabetes.

“It’s an enormously common disease, and there are not enough gastroenterologists, to say nothing of hepatologists, to care for every patient with NAFLD,” said Anna Mae Diehl, MD, a gastroenterologist and professor at Duke University in Durham, N.C., who was not involved with the conference nor in writing the statement.

Clinical care pathways coming soon

Another key part of this initiative is development of clinical care pathways that will have “careful explication of each step in screening, diagnosis, and treatment,” and will be designed to inform the practice of primary care physicians (PCPs) as well as clinicians from the various specialties that deal with these patients.

The clinical care pathways are on track to come out later in 2021, said Fasiha Kanwal, MD, a professor and chief of gastroenterology at Baylor College of Medicine in Houston, and lead author on the Call to Action document.

“The Pathways will include practical recommendations about whom to screen and when to refer, and the criteria primary care physicians can use for diagnosis and risk stratification,” Dr. Kanwal said in an interview. “Patients can benefit from a standardized approach.”

The new document also includes results from a recent survey about NAFLD and NASH management completed by 751 U.S. physicians, including 401 (53%) primary care physicians, 175 gastroenterologists, (23%) and 175 endocrinologists (23%; percentages total 99% because of rounding).

The results showed “significant gaps in knowledge about whom to screen and how to diagnose and treat patients at high risk for NASH,” concluded the statement’s authors. Barely more than a third of the respondents knew that almost all patients with severe obesity likely have NAFLD, and fewer than half the endocrinologists and the primary care physicians appreciated that NAFLD is very common among patients with type 2 diabetes.
 

‘Understanding of NAFLD is not there’

“I applaud this effort that calls attention to an emerging public health problem. This paper and survey are great ideas. The findings are not surprising, but they’re important,” said Dr. Diehl said in an interview. “Much more needs to be done” including changes in social behavior and government policies.

“The public’s understanding of NAFLD is not there,” and many physicians also have an incomplete understanding of NAFLD and more serious stages of metabolic liver disease. “Physicians know that patients with obesity are at risk for heart disease, diabetes, and stroke, but they may not always be aware that these patients can also have cirrhosis,” noted Dr. Diehl, who published in 2019 a call to action for NAFLD of her own with some associates.

“My referrals are fueled by primary care physicians who recognize patients with significant liver disease. It would be great to outline recommended practice; I have no doubt that providers will embrace this,” as well as the broader concept of multidisciplinary teams, another focus of the statement. Dr. Diehl cited the “Cancer Center model,” where an oncologist takes primary responsibility for caring for a cancer patient while coordinating care with other specialists, an approach facilitated by EMRs that allow seamless data and chart sharing and something that many health systems have either already adopted or are moving toward.

She said the NASH Call to Action may help catalyze broader application of this model to many more patients with NAFLD or NASH, and noted that some U.S. centers already use this approach – including Dr. Diehl’s program at Duke – which brings together her gastroenterology colleagues with cardiologists, radiologists, endocrinologists, and bariatric surgeons. But she noted that for most patients with metabolic liver disease, the hub clinician needs to be a PCP, especially for patients with earlier-stage disease, because the number of affected patients is so huge.

“Key steps toward establishing such teams include establishing protocols for risk stratification and referral, definition of roles and responsibilities, and buy-in from institutions and payers. Clearly a lot of work needs to occur to get to these multidisciplinary teams,” said Dr. Kanwal.

Ralph A. DeFronzo, MD, professor and deputy director of the Texas Diabetes Institute at UT Health San Antonio, who was not involved with the conference or statement, had a different take on what the future of NASH and NAFLD care may look like.

“Endocrinologists, hepatologists, and obesity experts will work within their individual specialties to diagnose and manage NASH,” he said in an interview. But he acknowledged that “an integrated effort by specialists would be important” to help “primary care physicians who are less familiar with the disease.”
 

Controversy over pioglitazone?

Dr. DeFronzo endorsed development of clinical care pathways as “important,” but also as a potential source of “controversy, especially with respect to treatment.”

The Call to Action statement cites lifestyle-based therapies, such as an appropriate diet; regular, moderate exercise; and elimination when possible of obesogenic medications as cornerstone interventions for patients with NAFLD or early-stage NASH, interventions that can be prescribed by PCPs. For patients with NASH and stage 2 or worse fibrosis, the statement endorses liver-directed pharmacotherapy. While noting that no agents currently carry a Food and Drug Administration–approved indication for treating NASH, the statement cites evidence that 800 IU/day of vitamin E improves steatosis in patients with NASH but not type 2 diabetes.

For patients with type 2 diabetes, the statement notes that results from five randomized trials indicated that pioglitazone could reverse steatohepatitis, findings that led to its recommendation in guidelines from a modest circle of medical groups, including the American Association for the Study of Liver Diseases and the European Association for the Study of Diabetes. However, the 2021 Standards of Medical Care in Diabetes from the American Diabetes Association gives these agents limited endorsement, saying: “Pioglitazone, vitamin E treatment, and liraglutide treatment of biopsy-proven nonalcoholic steatohepatitis have each been shown to improve liver histology, but effects on longer-term clinical outcomes are not known.”

“The strongest evidence by far is for pioglitazone for treating NAFLD and NASH,” said Dr. DeFronzo, a vocal proponent of the drug for this indication. But he added that “hepatologists don’t feel comfortable with drugs from the thiazolidinedione class,” which includes pioglitazone.

“We don’t yet know how to optimally configure the health system for NAFLD and NASH to make it more efficient and helpful to patients, but models exist, and the approach is evolving,” said Dr. Diehl.

Dr. Diehl and Dr. Kanwal had no relevant disclosures. Dr. DeFronzo has been a speaker on behalf of AstraZeneca and Novo Nordisk, has been an adviser to AstraZeneca, Boehringer Ingelheim, Intarcia, and Janssen, and has received research funding from AstraZeneca, Janssen and Merck.

[email protected]

A multidisciplinary panel of U.S. experts released a “Call to Action” for improved screening, diagnosis, and treatment of patients with nonalcoholic steatohepatitis (NASH) and nonalcoholic fatty liver disease (NAFLD) on July 26, an effort organized by the American Gastroenterological Association in collaboration with seven other U.S. medical organizations including several endocrinology groups.

The published statement, “Preparing for the NASH Epidemic: A Call to Action,” proposes several urgent steps for the U.S. clinical community to provide better-focused and better-coordinated care for patients at risk for developing or having NAFLD or NASH, particularly among “emerging” at-risk cohorts such as patients with diabetes and obesity. It appears in the journals Gastroenterology, Diabetes Care, Metabolism: Clinical and Experimental, and Obesity.

The statement’s central pitch is that improvements in care won’t be possible unless the several medical specialties that deal with affected or at-risk patients stop working “in separate silos,” and instead create “a collective action plan,” and also organize multidisciplinary teams that “integrate primary care, hepatology, obesity medicine, endocrinology, and diabetology via well-defined care pathways.”

“The overarching goal” is a “unified, international public health response to NAFLD and NASH,” said the statement, which stemmed from a conference held in July 2020 that included representatives from not only the lead gastroenterology group but also the American Diabetes Association, the American Association for the Study of Liver Diseases, the American Association of Clinical Endocrinologists, The Endocrine Society, The American Academy of Family Physicians, The Obesity Society, and the American College of Osteopathic Family Physicians.

The statement cites sobering prevalence numbers, with estimates that NAFLD exists in more than half the patients with type 2 diabetes, while NASH affects about a third, rates that translate into many millions of affected Americans, given recent estimates that the U.S. prevalence of type 2 diabetes exceeds 30 million people. And the numbers continue to rise along with increases in the prevalence of obesity and type 2 diabetes.

“It’s an enormously common disease, and there are not enough gastroenterologists, to say nothing of hepatologists, to care for every patient with NAFLD,” said Anna Mae Diehl, MD, a gastroenterologist and professor at Duke University in Durham, N.C., who was not involved with the conference nor in writing the statement.

Clinical care pathways coming soon

Another key part of this initiative is development of clinical care pathways that will have “careful explication of each step in screening, diagnosis, and treatment,” and will be designed to inform the practice of primary care physicians (PCPs) as well as clinicians from the various specialties that deal with these patients.

The clinical care pathways are on track to come out later in 2021, said Fasiha Kanwal, MD, a professor and chief of gastroenterology at Baylor College of Medicine in Houston, and lead author on the Call to Action document.

“The Pathways will include practical recommendations about whom to screen and when to refer, and the criteria primary care physicians can use for diagnosis and risk stratification,” Dr. Kanwal said in an interview. “Patients can benefit from a standardized approach.”

The new document also includes results from a recent survey about NAFLD and NASH management completed by 751 U.S. physicians, including 401 (53%) primary care physicians, 175 gastroenterologists, (23%) and 175 endocrinologists (23%; percentages total 99% because of rounding).

The results showed “significant gaps in knowledge about whom to screen and how to diagnose and treat patients at high risk for NASH,” concluded the statement’s authors. Barely more than a third of the respondents knew that almost all patients with severe obesity likely have NAFLD, and fewer than half the endocrinologists and the primary care physicians appreciated that NAFLD is very common among patients with type 2 diabetes.
 

‘Understanding of NAFLD is not there’

“I applaud this effort that calls attention to an emerging public health problem. This paper and survey are great ideas. The findings are not surprising, but they’re important,” said Dr. Diehl said in an interview. “Much more needs to be done” including changes in social behavior and government policies.

“The public’s understanding of NAFLD is not there,” and many physicians also have an incomplete understanding of NAFLD and more serious stages of metabolic liver disease. “Physicians know that patients with obesity are at risk for heart disease, diabetes, and stroke, but they may not always be aware that these patients can also have cirrhosis,” noted Dr. Diehl, who published in 2019 a call to action for NAFLD of her own with some associates.

“My referrals are fueled by primary care physicians who recognize patients with significant liver disease. It would be great to outline recommended practice; I have no doubt that providers will embrace this,” as well as the broader concept of multidisciplinary teams, another focus of the statement. Dr. Diehl cited the “Cancer Center model,” where an oncologist takes primary responsibility for caring for a cancer patient while coordinating care with other specialists, an approach facilitated by EMRs that allow seamless data and chart sharing and something that many health systems have either already adopted or are moving toward.

She said the NASH Call to Action may help catalyze broader application of this model to many more patients with NAFLD or NASH, and noted that some U.S. centers already use this approach – including Dr. Diehl’s program at Duke – which brings together her gastroenterology colleagues with cardiologists, radiologists, endocrinologists, and bariatric surgeons. But she noted that for most patients with metabolic liver disease, the hub clinician needs to be a PCP, especially for patients with earlier-stage disease, because the number of affected patients is so huge.

“Key steps toward establishing such teams include establishing protocols for risk stratification and referral, definition of roles and responsibilities, and buy-in from institutions and payers. Clearly a lot of work needs to occur to get to these multidisciplinary teams,” said Dr. Kanwal.

Ralph A. DeFronzo, MD, professor and deputy director of the Texas Diabetes Institute at UT Health San Antonio, who was not involved with the conference or statement, had a different take on what the future of NASH and NAFLD care may look like.

“Endocrinologists, hepatologists, and obesity experts will work within their individual specialties to diagnose and manage NASH,” he said in an interview. But he acknowledged that “an integrated effort by specialists would be important” to help “primary care physicians who are less familiar with the disease.”
 

Controversy over pioglitazone?

Dr. DeFronzo endorsed development of clinical care pathways as “important,” but also as a potential source of “controversy, especially with respect to treatment.”

The Call to Action statement cites lifestyle-based therapies, such as an appropriate diet; regular, moderate exercise; and elimination when possible of obesogenic medications as cornerstone interventions for patients with NAFLD or early-stage NASH, interventions that can be prescribed by PCPs. For patients with NASH and stage 2 or worse fibrosis, the statement endorses liver-directed pharmacotherapy. While noting that no agents currently carry a Food and Drug Administration–approved indication for treating NASH, the statement cites evidence that 800 IU/day of vitamin E improves steatosis in patients with NASH but not type 2 diabetes.

For patients with type 2 diabetes, the statement notes that results from five randomized trials indicated that pioglitazone could reverse steatohepatitis, findings that led to its recommendation in guidelines from a modest circle of medical groups, including the American Association for the Study of Liver Diseases and the European Association for the Study of Diabetes. However, the 2021 Standards of Medical Care in Diabetes from the American Diabetes Association gives these agents limited endorsement, saying: “Pioglitazone, vitamin E treatment, and liraglutide treatment of biopsy-proven nonalcoholic steatohepatitis have each been shown to improve liver histology, but effects on longer-term clinical outcomes are not known.”

“The strongest evidence by far is for pioglitazone for treating NAFLD and NASH,” said Dr. DeFronzo, a vocal proponent of the drug for this indication. But he added that “hepatologists don’t feel comfortable with drugs from the thiazolidinedione class,” which includes pioglitazone.

“We don’t yet know how to optimally configure the health system for NAFLD and NASH to make it more efficient and helpful to patients, but models exist, and the approach is evolving,” said Dr. Diehl.

Dr. Diehl and Dr. Kanwal had no relevant disclosures. Dr. DeFronzo has been a speaker on behalf of AstraZeneca and Novo Nordisk, has been an adviser to AstraZeneca, Boehringer Ingelheim, Intarcia, and Janssen, and has received research funding from AstraZeneca, Janssen and Merck.

[email protected]

A multidisciplinary panel of U.S. experts released a “Call to Action” for improved screening, diagnosis, and treatment of patients with nonalcoholic steatohepatitis (NASH) and nonalcoholic fatty liver disease (NAFLD) on July 26, an effort organized by the American Gastroenterological Association in collaboration with seven other U.S. medical organizations including several endocrinology groups.

The published statement, “Preparing for the NASH Epidemic: A Call to Action,” proposes several urgent steps for the U.S. clinical community to provide better-focused and better-coordinated care for patients at risk for developing or having NAFLD or NASH, particularly among “emerging” at-risk cohorts such as patients with diabetes and obesity. It appears in the journals Gastroenterology, Diabetes Care, Metabolism: Clinical and Experimental, and Obesity.

The statement’s central pitch is that improvements in care won’t be possible unless the several medical specialties that deal with affected or at-risk patients stop working “in separate silos,” and instead create “a collective action plan,” and also organize multidisciplinary teams that “integrate primary care, hepatology, obesity medicine, endocrinology, and diabetology via well-defined care pathways.”

“The overarching goal” is a “unified, international public health response to NAFLD and NASH,” said the statement, which stemmed from a conference held in July 2020 that included representatives from not only the lead gastroenterology group but also the American Diabetes Association, the American Association for the Study of Liver Diseases, the American Association of Clinical Endocrinologists, The Endocrine Society, The American Academy of Family Physicians, The Obesity Society, and the American College of Osteopathic Family Physicians.

The statement cites sobering prevalence numbers, with estimates that NAFLD exists in more than half the patients with type 2 diabetes, while NASH affects about a third, rates that translate into many millions of affected Americans, given recent estimates that the U.S. prevalence of type 2 diabetes exceeds 30 million people. And the numbers continue to rise along with increases in the prevalence of obesity and type 2 diabetes.

“It’s an enormously common disease, and there are not enough gastroenterologists, to say nothing of hepatologists, to care for every patient with NAFLD,” said Anna Mae Diehl, MD, a gastroenterologist and professor at Duke University in Durham, N.C., who was not involved with the conference nor in writing the statement.

Clinical care pathways coming soon

Another key part of this initiative is development of clinical care pathways that will have “careful explication of each step in screening, diagnosis, and treatment,” and will be designed to inform the practice of primary care physicians (PCPs) as well as clinicians from the various specialties that deal with these patients.

The clinical care pathways are on track to come out later in 2021, said Fasiha Kanwal, MD, a professor and chief of gastroenterology at Baylor College of Medicine in Houston, and lead author on the Call to Action document.

“The Pathways will include practical recommendations about whom to screen and when to refer, and the criteria primary care physicians can use for diagnosis and risk stratification,” Dr. Kanwal said in an interview. “Patients can benefit from a standardized approach.”

The new document also includes results from a recent survey about NAFLD and NASH management completed by 751 U.S. physicians, including 401 (53%) primary care physicians, 175 gastroenterologists, (23%) and 175 endocrinologists (23%; percentages total 99% because of rounding).

The results showed “significant gaps in knowledge about whom to screen and how to diagnose and treat patients at high risk for NASH,” concluded the statement’s authors. Barely more than a third of the respondents knew that almost all patients with severe obesity likely have NAFLD, and fewer than half the endocrinologists and the primary care physicians appreciated that NAFLD is very common among patients with type 2 diabetes.
 

‘Understanding of NAFLD is not there’

“I applaud this effort that calls attention to an emerging public health problem. This paper and survey are great ideas. The findings are not surprising, but they’re important,” said Dr. Diehl said in an interview. “Much more needs to be done” including changes in social behavior and government policies.

“The public’s understanding of NAFLD is not there,” and many physicians also have an incomplete understanding of NAFLD and more serious stages of metabolic liver disease. “Physicians know that patients with obesity are at risk for heart disease, diabetes, and stroke, but they may not always be aware that these patients can also have cirrhosis,” noted Dr. Diehl, who published in 2019 a call to action for NAFLD of her own with some associates.

“My referrals are fueled by primary care physicians who recognize patients with significant liver disease. It would be great to outline recommended practice; I have no doubt that providers will embrace this,” as well as the broader concept of multidisciplinary teams, another focus of the statement. Dr. Diehl cited the “Cancer Center model,” where an oncologist takes primary responsibility for caring for a cancer patient while coordinating care with other specialists, an approach facilitated by EMRs that allow seamless data and chart sharing and something that many health systems have either already adopted or are moving toward.

She said the NASH Call to Action may help catalyze broader application of this model to many more patients with NAFLD or NASH, and noted that some U.S. centers already use this approach – including Dr. Diehl’s program at Duke – which brings together her gastroenterology colleagues with cardiologists, radiologists, endocrinologists, and bariatric surgeons. But she noted that for most patients with metabolic liver disease, the hub clinician needs to be a PCP, especially for patients with earlier-stage disease, because the number of affected patients is so huge.

“Key steps toward establishing such teams include establishing protocols for risk stratification and referral, definition of roles and responsibilities, and buy-in from institutions and payers. Clearly a lot of work needs to occur to get to these multidisciplinary teams,” said Dr. Kanwal.

Ralph A. DeFronzo, MD, professor and deputy director of the Texas Diabetes Institute at UT Health San Antonio, who was not involved with the conference or statement, had a different take on what the future of NASH and NAFLD care may look like.

“Endocrinologists, hepatologists, and obesity experts will work within their individual specialties to diagnose and manage NASH,” he said in an interview. But he acknowledged that “an integrated effort by specialists would be important” to help “primary care physicians who are less familiar with the disease.”
 

Controversy over pioglitazone?

Dr. DeFronzo endorsed development of clinical care pathways as “important,” but also as a potential source of “controversy, especially with respect to treatment.”

The Call to Action statement cites lifestyle-based therapies, such as an appropriate diet; regular, moderate exercise; and elimination when possible of obesogenic medications as cornerstone interventions for patients with NAFLD or early-stage NASH, interventions that can be prescribed by PCPs. For patients with NASH and stage 2 or worse fibrosis, the statement endorses liver-directed pharmacotherapy. While noting that no agents currently carry a Food and Drug Administration–approved indication for treating NASH, the statement cites evidence that 800 IU/day of vitamin E improves steatosis in patients with NASH but not type 2 diabetes.

For patients with type 2 diabetes, the statement notes that results from five randomized trials indicated that pioglitazone could reverse steatohepatitis, findings that led to its recommendation in guidelines from a modest circle of medical groups, including the American Association for the Study of Liver Diseases and the European Association for the Study of Diabetes. However, the 2021 Standards of Medical Care in Diabetes from the American Diabetes Association gives these agents limited endorsement, saying: “Pioglitazone, vitamin E treatment, and liraglutide treatment of biopsy-proven nonalcoholic steatohepatitis have each been shown to improve liver histology, but effects on longer-term clinical outcomes are not known.”

“The strongest evidence by far is for pioglitazone for treating NAFLD and NASH,” said Dr. DeFronzo, a vocal proponent of the drug for this indication. But he added that “hepatologists don’t feel comfortable with drugs from the thiazolidinedione class,” which includes pioglitazone.

“We don’t yet know how to optimally configure the health system for NAFLD and NASH to make it more efficient and helpful to patients, but models exist, and the approach is evolving,” said Dr. Diehl.

Dr. Diehl and Dr. Kanwal had no relevant disclosures. Dr. DeFronzo has been a speaker on behalf of AstraZeneca and Novo Nordisk, has been an adviser to AstraZeneca, Boehringer Ingelheim, Intarcia, and Janssen, and has received research funding from AstraZeneca, Janssen and Merck.

[email protected]

Busting the myth of skipping breakfast

Your mother told you that breakfast was the most important meal of the day. Cereal marketing teams banked on that, selling breakfast to millions of people based on a common turn of phrase like “an apple a day keeps the doctor away.” Well, what if the notion of breakfast’s importance isn’t just marketing BS?

NorthStar203/iStock/Getty Images Plus

A new study suggests that adults who don’t eat breakfast are setting themselves up for a nutritional gap. Common breakfast foods pack a ton of calcium, fiber, and vitamin C from milk, cereals, and fruit. Christopher Taylor, PhD, senior author of the study and professor of dietetics at the Ohio State University, Columbus, said that if you’re not getting those nutrients from foods at breakfast, there’s a tendency to skip them throughout the rest of your day.

Data from a sample of the National Health and Nutrition Examination Survey – 30,889 adults aged 19 and older who participated between 2005 and 2016 – showed that 15.2% of participants reported skipping breakfast.

The research team then estimated nutrient consumption using federal dietary studies and guidelines and compared it to Food and Nutrition Board of National Academies nutrient recommendations. The breakfast skippers, they determined, were missing out on pronounced levels of fiber, magnesium, iron, calcium, and vitamins A, B₁, B₂, B₃, C, and D and were more likely to fall prey to lower-quality snacking. Cue those Oreos at 3 pm.

You may get more total calories within the day by eating breakfast, but your lunch, dinner, and snacks are much larger when you skip it. So the case of breakfast being the most important meal of the day checks out. Who knew that Tony the Tiger – and Mom – were actually on to something?
 

The bitter taste of a healthy liver

Alcohol and liver disease. They go together like, well, alcohol and liver disease. But alcohol isn’t the only reason people get liver disease, and now there’s a potential new treatment for people with hepatic steatosis on the way to becoming nonalcoholic fatty liver disease: beer.

Okay, not literally beer, but a pair of compounds derived from hops, the plant that gives beer its color and bitter flavor. In a study published in eLife, researchers from Oregon State University fed mice either a low-fat diet or a high-fat diet to induce hepatic steatosis, with some on the high-fat diet receiving either xanthohumol, a prenylated flavonoid from the hop plant, or tetrahydroxanthohumol, a hydrogenated derivative of xanthohumol.

Courtesy Oregon State University

Life’s great mysteries, from A to zinc

Thanks to science, we now have answers to what were once unanswerable questions: Is Jello a solid or a liquid? If someone leads but no one follows, are they just out for a walk? Does zinc inhibit or promote the growth of kidney stones? How many licks does it take to get to the center of a Tootsie Pop? (Turns out science really did answer this one.)

If you’re anything like us, then you’ve been following the big debate on the two competing theories involving the role of zinc in kidney stone formation for years. One theory says that zinc stops the growth of calcium oxalate crystals that make up stones. The other says that zinc alters the surfaces of crystals, which encourages growth.

We can’t stand the suspense any longer, so here goes: The answer to “does zinc inhibit or promote the growth of kidney stones?” is … yes.

decade3d/Thinkstock

Babies’ ‘gut instinct’ to cry

At some point or another, you’ve probably been told not to “be such a baby” when you were scared of something. If you’ve been called a crybaby, it may be an indicator that you had a different gut microbiome as an infant.

Investigators from Michigan State University and the University of North Carolina say that babies who react more strongly to scary situations have different gut microbiomes compared with babies who don’t have such a strong reaction. The way babies react to scary situations can say a lot about their future, and there is even some evidence that gut microbiomes may have something to do with mental health.

©a-fitz/iStockphoto.com

Busting the myth of skipping breakfast

Your mother told you that breakfast was the most important meal of the day. Cereal marketing teams banked on that, selling breakfast to millions of people based on a common turn of phrase like “an apple a day keeps the doctor away.” Well, what if the notion of breakfast’s importance isn’t just marketing BS?

NorthStar203/iStock/Getty Images Plus

A new study suggests that adults who don’t eat breakfast are setting themselves up for a nutritional gap. Common breakfast foods pack a ton of calcium, fiber, and vitamin C from milk, cereals, and fruit. Christopher Taylor, PhD, senior author of the study and professor of dietetics at the Ohio State University, Columbus, said that if you’re not getting those nutrients from foods at breakfast, there’s a tendency to skip them throughout the rest of your day.

Data from a sample of the National Health and Nutrition Examination Survey – 30,889 adults aged 19 and older who participated between 2005 and 2016 – showed that 15.2% of participants reported skipping breakfast.

The research team then estimated nutrient consumption using federal dietary studies and guidelines and compared it to Food and Nutrition Board of National Academies nutrient recommendations. The breakfast skippers, they determined, were missing out on pronounced levels of fiber, magnesium, iron, calcium, and vitamins A, B₁, B₂, B₃, C, and D and were more likely to fall prey to lower-quality snacking. Cue those Oreos at 3 pm.

You may get more total calories within the day by eating breakfast, but your lunch, dinner, and snacks are much larger when you skip it. So the case of breakfast being the most important meal of the day checks out. Who knew that Tony the Tiger – and Mom – were actually on to something?
 

The bitter taste of a healthy liver

Alcohol and liver disease. They go together like, well, alcohol and liver disease. But alcohol isn’t the only reason people get liver disease, and now there’s a potential new treatment for people with hepatic steatosis on the way to becoming nonalcoholic fatty liver disease: beer.

Okay, not literally beer, but a pair of compounds derived from hops, the plant that gives beer its color and bitter flavor. In a study published in eLife, researchers from Oregon State University fed mice either a low-fat diet or a high-fat diet to induce hepatic steatosis, with some on the high-fat diet receiving either xanthohumol, a prenylated flavonoid from the hop plant, or tetrahydroxanthohumol, a hydrogenated derivative of xanthohumol.

Courtesy Oregon State University

Life’s great mysteries, from A to zinc

Thanks to science, we now have answers to what were once unanswerable questions: Is Jello a solid or a liquid? If someone leads but no one follows, are they just out for a walk? Does zinc inhibit or promote the growth of kidney stones? How many licks does it take to get to the center of a Tootsie Pop? (Turns out science really did answer this one.)

If you’re anything like us, then you’ve been following the big debate on the two competing theories involving the role of zinc in kidney stone formation for years. One theory says that zinc stops the growth of calcium oxalate crystals that make up stones. The other says that zinc alters the surfaces of crystals, which encourages growth.

We can’t stand the suspense any longer, so here goes: The answer to “does zinc inhibit or promote the growth of kidney stones?” is … yes.

decade3d/Thinkstock

Babies’ ‘gut instinct’ to cry

At some point or another, you’ve probably been told not to “be such a baby” when you were scared of something. If you’ve been called a crybaby, it may be an indicator that you had a different gut microbiome as an infant.

Investigators from Michigan State University and the University of North Carolina say that babies who react more strongly to scary situations have different gut microbiomes compared with babies who don’t have such a strong reaction. The way babies react to scary situations can say a lot about their future, and there is even some evidence that gut microbiomes may have something to do with mental health.

©a-fitz/iStockphoto.com

Busting the myth of skipping breakfast

Your mother told you that breakfast was the most important meal of the day. Cereal marketing teams banked on that, selling breakfast to millions of people based on a common turn of phrase like “an apple a day keeps the doctor away.” Well, what if the notion of breakfast’s importance isn’t just marketing BS?

NorthStar203/iStock/Getty Images Plus

A new study suggests that adults who don’t eat breakfast are setting themselves up for a nutritional gap. Common breakfast foods pack a ton of calcium, fiber, and vitamin C from milk, cereals, and fruit. Christopher Taylor, PhD, senior author of the study and professor of dietetics at the Ohio State University, Columbus, said that if you’re not getting those nutrients from foods at breakfast, there’s a tendency to skip them throughout the rest of your day.

Data from a sample of the National Health and Nutrition Examination Survey – 30,889 adults aged 19 and older who participated between 2005 and 2016 – showed that 15.2% of participants reported skipping breakfast.

The research team then estimated nutrient consumption using federal dietary studies and guidelines and compared it to Food and Nutrition Board of National Academies nutrient recommendations. The breakfast skippers, they determined, were missing out on pronounced levels of fiber, magnesium, iron, calcium, and vitamins A, B₁, B₂, B₃, C, and D and were more likely to fall prey to lower-quality snacking. Cue those Oreos at 3 pm.

You may get more total calories within the day by eating breakfast, but your lunch, dinner, and snacks are much larger when you skip it. So the case of breakfast being the most important meal of the day checks out. Who knew that Tony the Tiger – and Mom – were actually on to something?
 

The bitter taste of a healthy liver

Alcohol and liver disease. They go together like, well, alcohol and liver disease. But alcohol isn’t the only reason people get liver disease, and now there’s a potential new treatment for people with hepatic steatosis on the way to becoming nonalcoholic fatty liver disease: beer.

Okay, not literally beer, but a pair of compounds derived from hops, the plant that gives beer its color and bitter flavor. In a study published in eLife, researchers from Oregon State University fed mice either a low-fat diet or a high-fat diet to induce hepatic steatosis, with some on the high-fat diet receiving either xanthohumol, a prenylated flavonoid from the hop plant, or tetrahydroxanthohumol, a hydrogenated derivative of xanthohumol.

Courtesy Oregon State University

Life’s great mysteries, from A to zinc

Thanks to science, we now have answers to what were once unanswerable questions: Is Jello a solid or a liquid? If someone leads but no one follows, are they just out for a walk? Does zinc inhibit or promote the growth of kidney stones? How many licks does it take to get to the center of a Tootsie Pop? (Turns out science really did answer this one.)

If you’re anything like us, then you’ve been following the big debate on the two competing theories involving the role of zinc in kidney stone formation for years. One theory says that zinc stops the growth of calcium oxalate crystals that make up stones. The other says that zinc alters the surfaces of crystals, which encourages growth.

We can’t stand the suspense any longer, so here goes: The answer to “does zinc inhibit or promote the growth of kidney stones?” is … yes.

decade3d/Thinkstock

Babies’ ‘gut instinct’ to cry

At some point or another, you’ve probably been told not to “be such a baby” when you were scared of something. If you’ve been called a crybaby, it may be an indicator that you had a different gut microbiome as an infant.

Investigators from Michigan State University and the University of North Carolina say that babies who react more strongly to scary situations have different gut microbiomes compared with babies who don’t have such a strong reaction. The way babies react to scary situations can say a lot about their future, and there is even some evidence that gut microbiomes may have something to do with mental health.

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A third dose of a COVID-19 vaccine can boost antibody levels in people who previously received a solid organ transplant and had an unsatisfactory response to their first two mRNA shots, according to data from a newly published 30-patient case series.

All of those with low titers before the third dose had high titers after receiving the additional shot, but only about 33% of those with negative initial responses had detectable antibodies after the third dose, according to the paper, published in Annals of Internal Medicine.

Researchers at Johns Hopkins, Baltimore, who keep a COVID-19 vaccine registry, perform antibody tests on all registry subjects and inform them of their results. Registry participants were asked to inform the research team if they received a third dose, and, the research team tracked the immune responses of those who did.

The participants in this case series had low antibody levels and received a third dose of the vaccine on their own between March 20 and May 10 of 2021.
 

Third dose results

In this cases series – thought to be the first to look at third vaccine shots in this type of patient group – all six of those who had low antibody titers before the third dose had high-positive titers after the third dose.

Of the 24 individuals who had negative antibody titers before the third dose, just 6 had high titers after the third dose.

Two of the participants had low-positive titers, and 16 were negative.

“Several of those boosted very nicely into ranges seen, using these assays, in healthy persons,” said William Werbel, MD, a fellow in infectious disease at Johns Hopkins Medicine, Baltimore, who helped lead the study. Those with negative levels, even if they responded, tended to have lower titers, he said.

“The benefits at least from an antibody perspective were not the same for everybody and so this is obviously something that needs to be considered when thinking about selecting patients” for a COVID-19 prevention strategy, he said.

Reactions to the vaccine were low to moderate, such as some arm pain and fatigue.

“Showing that something is safe in that special, vulnerable population is important,” Dr. Werbel said. “We’re all wanting to make sure that we’re doing no harm.”

Dr. Werbel noted that there was no pattern in the small series based on the organ transplanted or in the vaccines used. As their third shot, 15 of the patients received the Johnson & Johnson vaccine; 9 received Moderna; and 6 received Pfizer-BioNTech.
 

Welcome news, but larger studies needed

“To think that a third dose could confer protection for a significant number of people is of course extremely welcome news,” said Christian Larsen, MD, DPhil, professor of surgery in the transplantation division at Emory University, Atlanta, who was not involved in the study. “It’s the easiest conceivable next intervention.”

He added, “We just want studies to confirm that – larger studies.”

Dr. Werbel stressed the importance of looking at third doses in these patients in a more controlled fashion in a randomized trial, to more carefully monitor safety and how patients fare when starting with one type of vaccine and switching to another, for example.

Richard Wender, MD, chair of family medicine and community health at the University of Pennsylvania, Philadelphia, said the findings are a reminder that there is still a lot that is unknown about COVID-19 and vaccination.

“We still don’t know who will or will not benefit from a third dose,” he said. “And our knowledge is evolving.  For example, a recent study suggested that people with previous infection and who are vaccinated may have better and longer protection than people with vaccination alone. We’re still learning.”

He added that specialists, not primary care clinicians, should be relied upon to respond to this emerging vaccination data. Primary care doctors are very busy in other ways – such as in getting children caught up on vaccinations and helping adults return to managing their chronic diseases, Dr. Wender noted.

“Their focus needs to be on helping to overcome hesitancy, mistrust, lack of information, or antivaccination sentiment to help more people feel comfortable being vaccinated – this is a lot of work and needs constant focus. In short, primary care clinicians need to focus chiefly on the unvaccinated,” he said.

“Monitoring immunization recommendations for unique at-risk populations should be the chief responsibility of teams providing subspecialty care, [such as for] transplant patients, people with chronic kidney disease, cancer patients, and people with other chronic illnesses.  This will allow primary care clinicians to tackle their many complex jobs.”
 

Possible solutions for those with low antibody responses

Dr. Larsen said that those with ongoing low antibody responses might still have other immune responses, such as a T-cell response. Such patients also could consider changing their vaccine type, he said.

“At the more significant intervention level, there may be circumstances where one could change the immunosuppressive drugs in a controlled way that might allow a better response,” suggested Dr. Larsen. “That’s obviously going to be something that requires a lot more thought and careful study.”

Dr. Werbel said that other options might need to be considered for those having no response following a third dose. One possibility is trying a vaccine with an adjuvant, such as the Novavax version, which might be more widely available soon.

“If you’re given a third dose of a very immunogenic vaccine – something that should work – and you just have no antibody development, it seems relatively unlikely that doing the same thing again is going to help you from that perspective, and for all we know might expose you to more risk,” Dr. Werbel noted.
 

Participant details

None of the 30 patients were thought to have ever had COVID-19. On average, patients had received their transplant 4.5 years before their original vaccination. In 25 patients, maintenance immunosuppression included tacrolimus or cyclosporine along with mycophenolate. Corticosteroids were also used for 24 patients, sirolimus was used for one patient, and belatacept was used for another patient.

Fifty-seven percent of patients had received the Pfizer/BioNTech vaccine originally, and 43% the Moderna vaccine. Most of the patients were kidney recipients, with two heart, three liver, one lung, one pancreas and one kidney-pancreas.

Dr. Werbel, Dr. Wender, and Dr. Larsen reported no relevant disclosures.

A third dose of a COVID-19 vaccine can boost antibody levels in people who previously received a solid organ transplant and had an unsatisfactory response to their first two mRNA shots, according to data from a newly published 30-patient case series.

All of those with low titers before the third dose had high titers after receiving the additional shot, but only about 33% of those with negative initial responses had detectable antibodies after the third dose, according to the paper, published in Annals of Internal Medicine.

Researchers at Johns Hopkins, Baltimore, who keep a COVID-19 vaccine registry, perform antibody tests on all registry subjects and inform them of their results. Registry participants were asked to inform the research team if they received a third dose, and, the research team tracked the immune responses of those who did.

The participants in this case series had low antibody levels and received a third dose of the vaccine on their own between March 20 and May 10 of 2021.
 

Third dose results

In this cases series – thought to be the first to look at third vaccine shots in this type of patient group – all six of those who had low antibody titers before the third dose had high-positive titers after the third dose.

Of the 24 individuals who had negative antibody titers before the third dose, just 6 had high titers after the third dose.

Two of the participants had low-positive titers, and 16 were negative.

“Several of those boosted very nicely into ranges seen, using these assays, in healthy persons,” said William Werbel, MD, a fellow in infectious disease at Johns Hopkins Medicine, Baltimore, who helped lead the study. Those with negative levels, even if they responded, tended to have lower titers, he said.

“The benefits at least from an antibody perspective were not the same for everybody and so this is obviously something that needs to be considered when thinking about selecting patients” for a COVID-19 prevention strategy, he said.

Reactions to the vaccine were low to moderate, such as some arm pain and fatigue.

“Showing that something is safe in that special, vulnerable population is important,” Dr. Werbel said. “We’re all wanting to make sure that we’re doing no harm.”

Dr. Werbel noted that there was no pattern in the small series based on the organ transplanted or in the vaccines used. As their third shot, 15 of the patients received the Johnson & Johnson vaccine; 9 received Moderna; and 6 received Pfizer-BioNTech.
 

Welcome news, but larger studies needed

“To think that a third dose could confer protection for a significant number of people is of course extremely welcome news,” said Christian Larsen, MD, DPhil, professor of surgery in the transplantation division at Emory University, Atlanta, who was not involved in the study. “It’s the easiest conceivable next intervention.”

He added, “We just want studies to confirm that – larger studies.”

Dr. Werbel stressed the importance of looking at third doses in these patients in a more controlled fashion in a randomized trial, to more carefully monitor safety and how patients fare when starting with one type of vaccine and switching to another, for example.

Richard Wender, MD, chair of family medicine and community health at the University of Pennsylvania, Philadelphia, said the findings are a reminder that there is still a lot that is unknown about COVID-19 and vaccination.

“We still don’t know who will or will not benefit from a third dose,” he said. “And our knowledge is evolving.  For example, a recent study suggested that people with previous infection and who are vaccinated may have better and longer protection than people with vaccination alone. We’re still learning.”

He added that specialists, not primary care clinicians, should be relied upon to respond to this emerging vaccination data. Primary care doctors are very busy in other ways – such as in getting children caught up on vaccinations and helping adults return to managing their chronic diseases, Dr. Wender noted.

“Their focus needs to be on helping to overcome hesitancy, mistrust, lack of information, or antivaccination sentiment to help more people feel comfortable being vaccinated – this is a lot of work and needs constant focus. In short, primary care clinicians need to focus chiefly on the unvaccinated,” he said.

“Monitoring immunization recommendations for unique at-risk populations should be the chief responsibility of teams providing subspecialty care, [such as for] transplant patients, people with chronic kidney disease, cancer patients, and people with other chronic illnesses.  This will allow primary care clinicians to tackle their many complex jobs.”
 

Possible solutions for those with low antibody responses

Dr. Larsen said that those with ongoing low antibody responses might still have other immune responses, such as a T-cell response. Such patients also could consider changing their vaccine type, he said.

“At the more significant intervention level, there may be circumstances where one could change the immunosuppressive drugs in a controlled way that might allow a better response,” suggested Dr. Larsen. “That’s obviously going to be something that requires a lot more thought and careful study.”

Dr. Werbel said that other options might need to be considered for those having no response following a third dose. One possibility is trying a vaccine with an adjuvant, such as the Novavax version, which might be more widely available soon.

“If you’re given a third dose of a very immunogenic vaccine – something that should work – and you just have no antibody development, it seems relatively unlikely that doing the same thing again is going to help you from that perspective, and for all we know might expose you to more risk,” Dr. Werbel noted.
 

Participant details

None of the 30 patients were thought to have ever had COVID-19. On average, patients had received their transplant 4.5 years before their original vaccination. In 25 patients, maintenance immunosuppression included tacrolimus or cyclosporine along with mycophenolate. Corticosteroids were also used for 24 patients, sirolimus was used for one patient, and belatacept was used for another patient.

Fifty-seven percent of patients had received the Pfizer/BioNTech vaccine originally, and 43% the Moderna vaccine. Most of the patients were kidney recipients, with two heart, three liver, one lung, one pancreas and one kidney-pancreas.

Dr. Werbel, Dr. Wender, and Dr. Larsen reported no relevant disclosures.

A third dose of a COVID-19 vaccine can boost antibody levels in people who previously received a solid organ transplant and had an unsatisfactory response to their first two mRNA shots, according to data from a newly published 30-patient case series.

All of those with low titers before the third dose had high titers after receiving the additional shot, but only about 33% of those with negative initial responses had detectable antibodies after the third dose, according to the paper, published in Annals of Internal Medicine.

Researchers at Johns Hopkins, Baltimore, who keep a COVID-19 vaccine registry, perform antibody tests on all registry subjects and inform them of their results. Registry participants were asked to inform the research team if they received a third dose, and, the research team tracked the immune responses of those who did.

The participants in this case series had low antibody levels and received a third dose of the vaccine on their own between March 20 and May 10 of 2021.
 

Third dose results

In this cases series – thought to be the first to look at third vaccine shots in this type of patient group – all six of those who had low antibody titers before the third dose had high-positive titers after the third dose.

Of the 24 individuals who had negative antibody titers before the third dose, just 6 had high titers after the third dose.

Two of the participants had low-positive titers, and 16 were negative.

“Several of those boosted very nicely into ranges seen, using these assays, in healthy persons,” said William Werbel, MD, a fellow in infectious disease at Johns Hopkins Medicine, Baltimore, who helped lead the study. Those with negative levels, even if they responded, tended to have lower titers, he said.

“The benefits at least from an antibody perspective were not the same for everybody and so this is obviously something that needs to be considered when thinking about selecting patients” for a COVID-19 prevention strategy, he said.

Reactions to the vaccine were low to moderate, such as some arm pain and fatigue.

“Showing that something is safe in that special, vulnerable population is important,” Dr. Werbel said. “We’re all wanting to make sure that we’re doing no harm.”

Dr. Werbel noted that there was no pattern in the small series based on the organ transplanted or in the vaccines used. As their third shot, 15 of the patients received the Johnson & Johnson vaccine; 9 received Moderna; and 6 received Pfizer-BioNTech.
 

Welcome news, but larger studies needed

“To think that a third dose could confer protection for a significant number of people is of course extremely welcome news,” said Christian Larsen, MD, DPhil, professor of surgery in the transplantation division at Emory University, Atlanta, who was not involved in the study. “It’s the easiest conceivable next intervention.”

He added, “We just want studies to confirm that – larger studies.”

Dr. Werbel stressed the importance of looking at third doses in these patients in a more controlled fashion in a randomized trial, to more carefully monitor safety and how patients fare when starting with one type of vaccine and switching to another, for example.

Richard Wender, MD, chair of family medicine and community health at the University of Pennsylvania, Philadelphia, said the findings are a reminder that there is still a lot that is unknown about COVID-19 and vaccination.

“We still don’t know who will or will not benefit from a third dose,” he said. “And our knowledge is evolving.  For example, a recent study suggested that people with previous infection and who are vaccinated may have better and longer protection than people with vaccination alone. We’re still learning.”

He added that specialists, not primary care clinicians, should be relied upon to respond to this emerging vaccination data. Primary care doctors are very busy in other ways – such as in getting children caught up on vaccinations and helping adults return to managing their chronic diseases, Dr. Wender noted.

“Their focus needs to be on helping to overcome hesitancy, mistrust, lack of information, or antivaccination sentiment to help more people feel comfortable being vaccinated – this is a lot of work and needs constant focus. In short, primary care clinicians need to focus chiefly on the unvaccinated,” he said.

“Monitoring immunization recommendations for unique at-risk populations should be the chief responsibility of teams providing subspecialty care, [such as for] transplant patients, people with chronic kidney disease, cancer patients, and people with other chronic illnesses.  This will allow primary care clinicians to tackle their many complex jobs.”
 

Possible solutions for those with low antibody responses

Dr. Larsen said that those with ongoing low antibody responses might still have other immune responses, such as a T-cell response. Such patients also could consider changing their vaccine type, he said.

“At the more significant intervention level, there may be circumstances where one could change the immunosuppressive drugs in a controlled way that might allow a better response,” suggested Dr. Larsen. “That’s obviously going to be something that requires a lot more thought and careful study.”

Dr. Werbel said that other options might need to be considered for those having no response following a third dose. One possibility is trying a vaccine with an adjuvant, such as the Novavax version, which might be more widely available soon.

“If you’re given a third dose of a very immunogenic vaccine – something that should work – and you just have no antibody development, it seems relatively unlikely that doing the same thing again is going to help you from that perspective, and for all we know might expose you to more risk,” Dr. Werbel noted.
 

Participant details

None of the 30 patients were thought to have ever had COVID-19. On average, patients had received their transplant 4.5 years before their original vaccination. In 25 patients, maintenance immunosuppression included tacrolimus or cyclosporine along with mycophenolate. Corticosteroids were also used for 24 patients, sirolimus was used for one patient, and belatacept was used for another patient.

Fifty-seven percent of patients had received the Pfizer/BioNTech vaccine originally, and 43% the Moderna vaccine. Most of the patients were kidney recipients, with two heart, three liver, one lung, one pancreas and one kidney-pancreas.

Dr. Werbel, Dr. Wender, and Dr. Larsen reported no relevant disclosures.

It follows that, as the prevalence of obesity among people with type 1 diabetes mellitus (T1DM) increases, so would the incidence of nonalcoholic fatty liver (NAFL), as it does in type 2 diabetes.

However, researchers in Finland report that the incidence of NAFL in T1DM is much lower, and that the use of the waist-to-height ratio to calculate midsection girth could be a low-cost alternative to MRI and computed tomography to more precisely diagnose NAFL in T1DM.

In a cross-sectional analysis of 121 adults with T1DM in the Finnish Diabetic Nephropathy study, known as FinnDiane, researchers from the University of Helsinki report in Diabetes Care that a waist-to-height ratio of 0.5 showed a relatively high rate of accuracy for identifying NAFL that was statistically significant (P = .04).

Lead author Erika B. Parente, MD, PhD, a researcher at the Folkhälsän Research Center in Helsinki, noted that the findings do not identify any causality between what the researchers called visceral adiposity and NAFL. “As long as they have accumulation of fat in the center of body and they can develop this low-grade inflammation that also goes to insulin-load sensitivity, people with T1DM can accumulate fat in the liver as do people with T2DM and the general population,” she said in an interview.

These findings build on her group’s previous work published in Scientific Reports showing a strong relationship between waist-to-height ratio and visceral fat percentage in adults with T1DM. The most recent FinnDiane analysis found no similar relationship between NAFL and fat tissue in the hips, arms and legs, and total adipose tissue.
 

Better than BMI as a measure

“We also found that waist-to-height ratio is better than body mass index to identify those individuals at higher risk of having NAFL,” Dr. Parente said. However, it’s not possible to predict which patients referred to imaging evaluation after being screened by waist-to-height ratio of 0.5 will surely have NAFL, she added.

That answer, she said, would require a longitudinal and cost-effectiveness study with larger population.

The waist-to-height ratio cutoff of 0.5 showed an 86% sensitivity and 55% specificity for NAFL, whereas BMI of 26.6 kg/m² showed an 79% sensitivity and 57% specificity.

“The most important message from our research is that health care professionals should be aware that individuals with T1DM can have NAFL, and waist-to-height ratio may help to identify those at higher risk,” she said.

The prevalence of NAFL among the adults with T1DM in the study was 11.6%, which is lower than the prevalence other studies reported in T2DM – 76% in a U.S. study – and in the general population – ranging from 19% to 46%. This underscores, Dr. Parente noted, the importance of using waist-to-height ratio in T1DM patients to determine the status of NAFL.

She said that few studies have investigated the consequences of NAFL in T1DM, pointing to two that linked NAFL with chronic kidney disease and cardiovascular disease in T1DM (Diabetes Care. 2014;37:1729-36; J Hepatol. 2010;53:713-8). “Most of the studies about the consequences of NAFL included people with T2DM,” she said. “From our research, we cannot conclude about the impact of NAFL in cardiovascular or kidney complications in our population because this is a cross-sectional study.”

That question may be answered by a future follow-up study of the ongoing FinnDiane study, she said.

The study is a “good reminder” that people with central adiposity and metabolic syndrome can develop NAFL disease, said Jeanne Marie Clark, MD, MPH, of Johns Hopkins University, Baltimore. “Even patients we may not think of having insulin resistance, such as those with T1DM.”

However, Dr. Clark added, “I do not think we can really determine which measure of central adiposity is best.” She noted that the study was “pretty small” with only 14 patients who had NAFL disease. “Waist-to-height ratio is certainly a reasonable option,” she added. “Waist circumference alone is known to be a strong predictor. I would say some measure is better than none, and it should be more routine in clinical practice.”

Dr. Parente disclosed financial relationships with Eli Lilly, Abbott, AstraZeneca, Sanofi, and Boehringer Ingelheim. Two of eight coauthors disclosed financial relationships with AbbVie, Astellas, AstraZeneca, Bayer, Boehringer Ingelheim, Eli Lilly, Elo Water, Fresenius, GE Healthcare, Medscape, Merck Sharpe and Dohme, Mundipharma, Novo Nordisk, Peer-Voice, Sanofi, and Sciarc. The remaining coauthors had no disclosures.

Dr. Clark had no disclosures.

It follows that, as the prevalence of obesity among people with type 1 diabetes mellitus (T1DM) increases, so would the incidence of nonalcoholic fatty liver (NAFL), as it does in type 2 diabetes.

However, researchers in Finland report that the incidence of NAFL in T1DM is much lower, and that the use of the waist-to-height ratio to calculate midsection girth could be a low-cost alternative to MRI and computed tomography to more precisely diagnose NAFL in T1DM.

In a cross-sectional analysis of 121 adults with T1DM in the Finnish Diabetic Nephropathy study, known as FinnDiane, researchers from the University of Helsinki report in Diabetes Care that a waist-to-height ratio of 0.5 showed a relatively high rate of accuracy for identifying NAFL that was statistically significant (P = .04).

Lead author Erika B. Parente, MD, PhD, a researcher at the Folkhälsän Research Center in Helsinki, noted that the findings do not identify any causality between what the researchers called visceral adiposity and NAFL. “As long as they have accumulation of fat in the center of body and they can develop this low-grade inflammation that also goes to insulin-load sensitivity, people with T1DM can accumulate fat in the liver as do people with T2DM and the general population,” she said in an interview.

These findings build on her group’s previous work published in Scientific Reports showing a strong relationship between waist-to-height ratio and visceral fat percentage in adults with T1DM. The most recent FinnDiane analysis found no similar relationship between NAFL and fat tissue in the hips, arms and legs, and total adipose tissue.
 

Better than BMI as a measure

“We also found that waist-to-height ratio is better than body mass index to identify those individuals at higher risk of having NAFL,” Dr. Parente said. However, it’s not possible to predict which patients referred to imaging evaluation after being screened by waist-to-height ratio of 0.5 will surely have NAFL, she added.

That answer, she said, would require a longitudinal and cost-effectiveness study with larger population.

The waist-to-height ratio cutoff of 0.5 showed an 86% sensitivity and 55% specificity for NAFL, whereas BMI of 26.6 kg/m² showed an 79% sensitivity and 57% specificity.

“The most important message from our research is that health care professionals should be aware that individuals with T1DM can have NAFL, and waist-to-height ratio may help to identify those at higher risk,” she said.

The prevalence of NAFL among the adults with T1DM in the study was 11.6%, which is lower than the prevalence other studies reported in T2DM – 76% in a U.S. study – and in the general population – ranging from 19% to 46%. This underscores, Dr. Parente noted, the importance of using waist-to-height ratio in T1DM patients to determine the status of NAFL.

She said that few studies have investigated the consequences of NAFL in T1DM, pointing to two that linked NAFL with chronic kidney disease and cardiovascular disease in T1DM (Diabetes Care. 2014;37:1729-36; J Hepatol. 2010;53:713-8). “Most of the studies about the consequences of NAFL included people with T2DM,” she said. “From our research, we cannot conclude about the impact of NAFL in cardiovascular or kidney complications in our population because this is a cross-sectional study.”

That question may be answered by a future follow-up study of the ongoing FinnDiane study, she said.

The study is a “good reminder” that people with central adiposity and metabolic syndrome can develop NAFL disease, said Jeanne Marie Clark, MD, MPH, of Johns Hopkins University, Baltimore. “Even patients we may not think of having insulin resistance, such as those with T1DM.”

However, Dr. Clark added, “I do not think we can really determine which measure of central adiposity is best.” She noted that the study was “pretty small” with only 14 patients who had NAFL disease. “Waist-to-height ratio is certainly a reasonable option,” she added. “Waist circumference alone is known to be a strong predictor. I would say some measure is better than none, and it should be more routine in clinical practice.”

Dr. Parente disclosed financial relationships with Eli Lilly, Abbott, AstraZeneca, Sanofi, and Boehringer Ingelheim. Two of eight coauthors disclosed financial relationships with AbbVie, Astellas, AstraZeneca, Bayer, Boehringer Ingelheim, Eli Lilly, Elo Water, Fresenius, GE Healthcare, Medscape, Merck Sharpe and Dohme, Mundipharma, Novo Nordisk, Peer-Voice, Sanofi, and Sciarc. The remaining coauthors had no disclosures.

Dr. Clark had no disclosures.

It follows that, as the prevalence of obesity among people with type 1 diabetes mellitus (T1DM) increases, so would the incidence of nonalcoholic fatty liver (NAFL), as it does in type 2 diabetes.

However, researchers in Finland report that the incidence of NAFL in T1DM is much lower, and that the use of the waist-to-height ratio to calculate midsection girth could be a low-cost alternative to MRI and computed tomography to more precisely diagnose NAFL in T1DM.

In a cross-sectional analysis of 121 adults with T1DM in the Finnish Diabetic Nephropathy study, known as FinnDiane, researchers from the University of Helsinki report in Diabetes Care that a waist-to-height ratio of 0.5 showed a relatively high rate of accuracy for identifying NAFL that was statistically significant (P = .04).

Lead author Erika B. Parente, MD, PhD, a researcher at the Folkhälsän Research Center in Helsinki, noted that the findings do not identify any causality between what the researchers called visceral adiposity and NAFL. “As long as they have accumulation of fat in the center of body and they can develop this low-grade inflammation that also goes to insulin-load sensitivity, people with T1DM can accumulate fat in the liver as do people with T2DM and the general population,” she said in an interview.

These findings build on her group’s previous work published in Scientific Reports showing a strong relationship between waist-to-height ratio and visceral fat percentage in adults with T1DM. The most recent FinnDiane analysis found no similar relationship between NAFL and fat tissue in the hips, arms and legs, and total adipose tissue.
 

Better than BMI as a measure

“We also found that waist-to-height ratio is better than body mass index to identify those individuals at higher risk of having NAFL,” Dr. Parente said. However, it’s not possible to predict which patients referred to imaging evaluation after being screened by waist-to-height ratio of 0.5 will surely have NAFL, she added.

That answer, she said, would require a longitudinal and cost-effectiveness study with larger population.

The waist-to-height ratio cutoff of 0.5 showed an 86% sensitivity and 55% specificity for NAFL, whereas BMI of 26.6 kg/m² showed an 79% sensitivity and 57% specificity.

“The most important message from our research is that health care professionals should be aware that individuals with T1DM can have NAFL, and waist-to-height ratio may help to identify those at higher risk,” she said.

The prevalence of NAFL among the adults with T1DM in the study was 11.6%, which is lower than the prevalence other studies reported in T2DM – 76% in a U.S. study – and in the general population – ranging from 19% to 46%. This underscores, Dr. Parente noted, the importance of using waist-to-height ratio in T1DM patients to determine the status of NAFL.

She said that few studies have investigated the consequences of NAFL in T1DM, pointing to two that linked NAFL with chronic kidney disease and cardiovascular disease in T1DM (Diabetes Care. 2014;37:1729-36; J Hepatol. 2010;53:713-8). “Most of the studies about the consequences of NAFL included people with T2DM,” she said. “From our research, we cannot conclude about the impact of NAFL in cardiovascular or kidney complications in our population because this is a cross-sectional study.”

That question may be answered by a future follow-up study of the ongoing FinnDiane study, she said.

The study is a “good reminder” that people with central adiposity and metabolic syndrome can develop NAFL disease, said Jeanne Marie Clark, MD, MPH, of Johns Hopkins University, Baltimore. “Even patients we may not think of having insulin resistance, such as those with T1DM.”

However, Dr. Clark added, “I do not think we can really determine which measure of central adiposity is best.” She noted that the study was “pretty small” with only 14 patients who had NAFL disease. “Waist-to-height ratio is certainly a reasonable option,” she added. “Waist circumference alone is known to be a strong predictor. I would say some measure is better than none, and it should be more routine in clinical practice.”

Dr. Parente disclosed financial relationships with Eli Lilly, Abbott, AstraZeneca, Sanofi, and Boehringer Ingelheim. Two of eight coauthors disclosed financial relationships with AbbVie, Astellas, AstraZeneca, Bayer, Boehringer Ingelheim, Eli Lilly, Elo Water, Fresenius, GE Healthcare, Medscape, Merck Sharpe and Dohme, Mundipharma, Novo Nordisk, Peer-Voice, Sanofi, and Sciarc. The remaining coauthors had no disclosures.

Dr. Clark had no disclosures.

New guidelines from the American College of Gastroenterology on idiosyncratic drug-induced liver injury (DILI) emphasize that idiosyncratic DILI is increasingly driven by the burgeoning popularity of herbal and dietary supplements, as well as tyrosine kinase inhibitors and immune checkpoint inhibitors used to treat cancer.

Sebastian Kaulitzki/Science Photo Library

The guidelines, which represent an update from 2014, are published in The American Journal of Gastroenterology.

DILI is commonly seen by gastroenterologists and hepatologists, but it is challenging to diagnose because there are many potential causes, and no objective diagnostic tests. Its incidence in the general population is low, but it must be considered when facing unexplained liver injury. Its potential presence should also be considered when prescribing gastrointestinal medications like azathioprine, anti–tumor necrosis factor agents, and sulfonamides.

DILI can be characterized as intrinsic or idiosyncratic. Intrinsic DILI is somewhat predictable, based on human or animal studies that have revealed the potential for liver toxicity at higher doses. The best-known example is acetaminophen. Idiosyncratic DILI is rarer and shows up in individuals with a preexisting susceptibility. Clinical signs of idiosyncratic DILI are more diverse than intrinsic DILI. The ACG guideline focuses on idiosyncratic DILI, since guidelines are already available for intrinsic DILI.

Idiosyncratic DILI diagnosis can have a wide range of presentations, including asymptomatic liver biochemistry, jaundice, liver failure, and chronic hepatitis. Diagnosis is made by eliminating other potential causes.

In the presence of hepatocellular jaundice, mortality can reach 10%. DILI patients who develop progressive jaundice, regardless of concomitant coagulopathy, should be sent to a tertiary center and may be a candidate for liver transplantation.

Corticosteroids may be considered when there is uncertainty if a liver injury is from DILI or autoimmune hepatitis, but this remains controversial because some studies have shown benefit, while others have not, according to Bubu Banini, MD, PhD, assistant professor of medicine and research director of the metabolic health and weight management program at Yale University, New Haven, Conn. “Large-scale randomized controlled trials are needed for further elucidation of the role of steroids in DILI. For now, the guideline recommends consideration of steroid therapy, particularly in patients with features of autoimmune hepatitis,” she added.

An important factor driving DILI is the increasing popularity of herbal supplements, as well as increased use of some cancer therapies. “With the advent of immune checkpoint inhibitors as effective therapies for a variety of malignancies, physicians need to be aware of the potential side effects of these agents and the possibility of immune checkpoint inhibitor–related drug induced liver injury,” Dr. Banini said. The updated ACG guideline summarizes current FDA-approved immune checkpoint inhibitors and their potential to cause DILI. The drugs can also lead to reactivation of hepatitis B infection. Studies have shown liver enzyme elevation occurs in about 30% of patients treated with immune checkpoint inhibitors.

The guidelines recommend assessing DILI patients for hepatitis B and C, and treating patients prior to, or in combination with, immune checkpoint inhibitors or other chemotherapy drugs. The recommendations are in line with preliminary data from the ICI field, according to Dr. Banini.

Dr. Banini also noted there has been an increase in the use of herbal and dietary supplements in the United States over the past decade, and these now account for about one-fifth of DILI cases. The guidelines recommend that severe cholestatic disease from these agents should be managed similarly to cases caused by prescription drugs, and patients should be considered for liver transplant if necessary.

A web-based 6-month mortality calculator for suspected DILI is available. It uses Model for End-Stage Liver Disease, Charlson comorbidity Index, and serum albumin data. Those variables predict mortality in liver disease, and an independent analysis showed they predict 6-month mortality in DILI.

DILI is difficult to diagnose, but physicians should keep it in mind when faced with a case of liver enzyme abnormality, where other possibilities have been excluded. “With over a thousand medications potentially causing DILI, physicians should be familiar with LiverTox as a very useful and practical resource. The DILI mortality calculator can serve as a clinical tool to predict 6-month mortality in patients with suspected DILI,” Dr. Banini said.

Some authors disclosed relationships with several pharmaceutical companies. Dr. Banini reports having nothing to disclose.

New guidelines from the American College of Gastroenterology on idiosyncratic drug-induced liver injury (DILI) emphasize that idiosyncratic DILI is increasingly driven by the burgeoning popularity of herbal and dietary supplements, as well as tyrosine kinase inhibitors and immune checkpoint inhibitors used to treat cancer.

Sebastian Kaulitzki/Science Photo Library

The guidelines, which represent an update from 2014, are published in The American Journal of Gastroenterology.

DILI is commonly seen by gastroenterologists and hepatologists, but it is challenging to diagnose because there are many potential causes, and no objective diagnostic tests. Its incidence in the general population is low, but it must be considered when facing unexplained liver injury. Its potential presence should also be considered when prescribing gastrointestinal medications like azathioprine, anti–tumor necrosis factor agents, and sulfonamides.

DILI can be characterized as intrinsic or idiosyncratic. Intrinsic DILI is somewhat predictable, based on human or animal studies that have revealed the potential for liver toxicity at higher doses. The best-known example is acetaminophen. Idiosyncratic DILI is rarer and shows up in individuals with a preexisting susceptibility. Clinical signs of idiosyncratic DILI are more diverse than intrinsic DILI. The ACG guideline focuses on idiosyncratic DILI, since guidelines are already available for intrinsic DILI.

Idiosyncratic DILI diagnosis can have a wide range of presentations, including asymptomatic liver biochemistry, jaundice, liver failure, and chronic hepatitis. Diagnosis is made by eliminating other potential causes.

In the presence of hepatocellular jaundice, mortality can reach 10%. DILI patients who develop progressive jaundice, regardless of concomitant coagulopathy, should be sent to a tertiary center and may be a candidate for liver transplantation.

Corticosteroids may be considered when there is uncertainty if a liver injury is from DILI or autoimmune hepatitis, but this remains controversial because some studies have shown benefit, while others have not, according to Bubu Banini, MD, PhD, assistant professor of medicine and research director of the metabolic health and weight management program at Yale University, New Haven, Conn. “Large-scale randomized controlled trials are needed for further elucidation of the role of steroids in DILI. For now, the guideline recommends consideration of steroid therapy, particularly in patients with features of autoimmune hepatitis,” she added.

An important factor driving DILI is the increasing popularity of herbal supplements, as well as increased use of some cancer therapies. “With the advent of immune checkpoint inhibitors as effective therapies for a variety of malignancies, physicians need to be aware of the potential side effects of these agents and the possibility of immune checkpoint inhibitor–related drug induced liver injury,” Dr. Banini said. The updated ACG guideline summarizes current FDA-approved immune checkpoint inhibitors and their potential to cause DILI. The drugs can also lead to reactivation of hepatitis B infection. Studies have shown liver enzyme elevation occurs in about 30% of patients treated with immune checkpoint inhibitors.

The guidelines recommend assessing DILI patients for hepatitis B and C, and treating patients prior to, or in combination with, immune checkpoint inhibitors or other chemotherapy drugs. The recommendations are in line with preliminary data from the ICI field, according to Dr. Banini.

Dr. Banini also noted there has been an increase in the use of herbal and dietary supplements in the United States over the past decade, and these now account for about one-fifth of DILI cases. The guidelines recommend that severe cholestatic disease from these agents should be managed similarly to cases caused by prescription drugs, and patients should be considered for liver transplant if necessary.

A web-based 6-month mortality calculator for suspected DILI is available. It uses Model for End-Stage Liver Disease, Charlson comorbidity Index, and serum albumin data. Those variables predict mortality in liver disease, and an independent analysis showed they predict 6-month mortality in DILI.

DILI is difficult to diagnose, but physicians should keep it in mind when faced with a case of liver enzyme abnormality, where other possibilities have been excluded. “With over a thousand medications potentially causing DILI, physicians should be familiar with LiverTox as a very useful and practical resource. The DILI mortality calculator can serve as a clinical tool to predict 6-month mortality in patients with suspected DILI,” Dr. Banini said.

Some authors disclosed relationships with several pharmaceutical companies. Dr. Banini reports having nothing to disclose.

New guidelines from the American College of Gastroenterology on idiosyncratic drug-induced liver injury (DILI) emphasize that idiosyncratic DILI is increasingly driven by the burgeoning popularity of herbal and dietary supplements, as well as tyrosine kinase inhibitors and immune checkpoint inhibitors used to treat cancer.

Sebastian Kaulitzki/Science Photo Library

The guidelines, which represent an update from 2014, are published in The American Journal of Gastroenterology.

DILI is commonly seen by gastroenterologists and hepatologists, but it is challenging to diagnose because there are many potential causes, and no objective diagnostic tests. Its incidence in the general population is low, but it must be considered when facing unexplained liver injury. Its potential presence should also be considered when prescribing gastrointestinal medications like azathioprine, anti–tumor necrosis factor agents, and sulfonamides.

DILI can be characterized as intrinsic or idiosyncratic. Intrinsic DILI is somewhat predictable, based on human or animal studies that have revealed the potential for liver toxicity at higher doses. The best-known example is acetaminophen. Idiosyncratic DILI is rarer and shows up in individuals with a preexisting susceptibility. Clinical signs of idiosyncratic DILI are more diverse than intrinsic DILI. The ACG guideline focuses on idiosyncratic DILI, since guidelines are already available for intrinsic DILI.

Idiosyncratic DILI diagnosis can have a wide range of presentations, including asymptomatic liver biochemistry, jaundice, liver failure, and chronic hepatitis. Diagnosis is made by eliminating other potential causes.

In the presence of hepatocellular jaundice, mortality can reach 10%. DILI patients who develop progressive jaundice, regardless of concomitant coagulopathy, should be sent to a tertiary center and may be a candidate for liver transplantation.

Corticosteroids may be considered when there is uncertainty if a liver injury is from DILI or autoimmune hepatitis, but this remains controversial because some studies have shown benefit, while others have not, according to Bubu Banini, MD, PhD, assistant professor of medicine and research director of the metabolic health and weight management program at Yale University, New Haven, Conn. “Large-scale randomized controlled trials are needed for further elucidation of the role of steroids in DILI. For now, the guideline recommends consideration of steroid therapy, particularly in patients with features of autoimmune hepatitis,” she added.

An important factor driving DILI is the increasing popularity of herbal supplements, as well as increased use of some cancer therapies. “With the advent of immune checkpoint inhibitors as effective therapies for a variety of malignancies, physicians need to be aware of the potential side effects of these agents and the possibility of immune checkpoint inhibitor–related drug induced liver injury,” Dr. Banini said. The updated ACG guideline summarizes current FDA-approved immune checkpoint inhibitors and their potential to cause DILI. The drugs can also lead to reactivation of hepatitis B infection. Studies have shown liver enzyme elevation occurs in about 30% of patients treated with immune checkpoint inhibitors.

The guidelines recommend assessing DILI patients for hepatitis B and C, and treating patients prior to, or in combination with, immune checkpoint inhibitors or other chemotherapy drugs. The recommendations are in line with preliminary data from the ICI field, according to Dr. Banini.

Dr. Banini also noted there has been an increase in the use of herbal and dietary supplements in the United States over the past decade, and these now account for about one-fifth of DILI cases. The guidelines recommend that severe cholestatic disease from these agents should be managed similarly to cases caused by prescription drugs, and patients should be considered for liver transplant if necessary.

A web-based 6-month mortality calculator for suspected DILI is available. It uses Model for End-Stage Liver Disease, Charlson comorbidity Index, and serum albumin data. Those variables predict mortality in liver disease, and an independent analysis showed they predict 6-month mortality in DILI.

DILI is difficult to diagnose, but physicians should keep it in mind when faced with a case of liver enzyme abnormality, where other possibilities have been excluded. “With over a thousand medications potentially causing DILI, physicians should be familiar with LiverTox as a very useful and practical resource. The DILI mortality calculator can serve as a clinical tool to predict 6-month mortality in patients with suspected DILI,” Dr. Banini said.

Some authors disclosed relationships with several pharmaceutical companies. Dr. Banini reports having nothing to disclose.

Anti–apolipoprotein A-I (apo A-I) antibodies are common in nonalcoholic fatty liver disease and may not only drive its development but also underlie the link between NAFLD and cardiovascular disease, suggests a novel analysis.

Conducting a clinical analysis and a series of experiments, Sabrina Pagano, PhD, diagnostic department, Geneva University Hospital, and colleagues looked for anti–apo A-I antibodies in patients with NAFLD and then examined their impact on hepatic cells and inflammatory markers.

They found that nearly half of 137 patients with NAFLD were seropositive, and that the antibodies were associated with increased lipid accumulation in the liver, altered triglyceride metabolism, and proinflammatory effects on liver cells.

“We hypothesize that anti–apo A-I IgG may be a potential driver in the development of NAFLD, and further studies are needed to support anti–apo A-I IgG as a possible link between NAFLD and cardiovascular disease,” Dr. Pagano said.

The research was presented at the European Atherosclerosis Society 2021 Virtual Congress.

Asked whether anti–apo A-I antibodies could represent a potential treatment target for NAFLD, Dr. Pagano said in an interview that they have “already developed a peptide that is recognized by the antibodies in order to try to reverse the anti–apo A-I deleterious effect.”

While this was successful in vitro, “unfortunately we didn’t observe ... the peptide reverse of these anti–apo A-I effects in mice, so ... for the moment it’s a little early,” to say whether it represents a promising target.

Approached for comment, Maciej Banach, MD, PhD, full professor of cardiology, Polish Mother’s Memorial Hospital Research Institute, Lodz, said that the results are “very interesting and encouraging.”

He said that his own global burden of disease analysis, which is set to be published soon, showed that the worldwide prevalence of NAFLD is 11%, “representing almost 900 million cases,” and a more than 33% increase in prevalence in the past 30 years.

Consequently, any “attempt to have effective, especially early, diagnosis and treatment,” is highly anticipated.

Dr. Banach said the findings from the experimental analyses are “very interesting and promising,” especially regarding the proinflammatory effects of anti–apo A-I antibodies.

However, he underlined that the clinical part, looking at antibody seropositivity in patients with NAFLD, was limited by the lack of a control group, and there was no indication as to what treatment the patients received, despite it being clear that many were obese.

Dr. Banach also believes that, taking into account the patient characteristics, it is likely that most of the patients had the more severe nonalcoholic steatohepatitis, and “it would be additionally useful to see the autoantibodies levels both in NASH and NAFLD.”

Nevertheless, the clinical utility of measuring anti–apo A-I antibodies is limited at this stage.

He said that the lack of “good, easy, and cheap diagnostic methods based on both laboratory and imaging data” for NAFLD means it would be difficult to determine whether assessing antibody seropositivity “might be indeed an added value.”
 

Independent predictors

Dr. Pagano explained that anti–apo A-I antibodies, which target the major protein fraction of HDL cholesterol, are independent predictors of cardiovascular events in high-risk populations.

They are also independently associated with cardiovascular disease in the general population, as well as atherosclerotic plaque vulnerability in both mice and humans.

She said that apo A-I antibodies have a metabolic role in vivo, and have been shown in vitro to disrupt cholesterol metabolism, promoting foam cell formation.

Studies have also indicated they play a role in hepatic fibrosis, predicting the development of cirrhosis in individuals with chronic hepatitis C infection.

The team therefore set out to determine the presence of anti–apo A-I antibodies in individuals with NAFLD, defined here as fatty acid levels greater than 5% of liver weight, as well as their effect on hepatic cells.

Working with colleagues at Magna Græcia University of Catanzaro (Italy), they obtained serum samples from 137 patients with NAFLD confirmed on ultrasound.

The patients had an average age of 49 years, and 48.9% were male. The median body mass index was 31.8 kg/m². Cholesterol levels were typically in the intermediate range.

They found that 46% of the participants had anti–apo A-I IgG antibodies, “which is quite high when compared with the 15%-20% positivity that we retrieved from the general population,” Dr. Pagano said.

To explore the link between high anti–apo A-I antibodies and NAFLD, the team studied hepatic cells, treating them with anti–apo A-I IgG antibodies or control IgG antibodies, or leaving them untreated, for 24 hours.

This revealed that anti–apo A-I IgG antibodies were associated with a significant increase in liquid droplet content in hepatic cells, compared with both cells treated with control IgG (P = .0008), and untreated cells (P = .0002).

Next, the team immunized apo E knockout mice with anti–apo A-I or control IgG antibodies. After 16 weeks, they found there was a significant increase in liver lipid content in mice given anti–apo A-I antibodies versus those treated with controls (P = .03).

They then asked whether anti–apo A-I antibodies could affect triglyceride metabolism. They examined the expression of the transcription factor sterol regulatory element binding protein (SREBP) and regulation of the triglyceride and cholesterol pathways.

Treating hepatic cells again for 24 hours with anti–apo A-I IgG antibodies or control IgG antibodies, or leaving them untreated, showed that anti–apo A-I antibodies were associated with “dramatic” increases in the active form of SREBP.

They also found that expression of two key enzymes in the triglyceride pathway, fatty acid synthetase and glycerol phosphate acyltransferase, was substantially decreased in the presence anti–apo A-I antibodies.

In both experiments, the untreated hepatic cells and those exposed to control IgG antibodies showed no significant changes.

“These results suggest that negative feedback ... turns off these enzymes, probably due to the lipid overload that is found in the cells after 24 hours of anti–apo A-I treatment,” Dr. Pagano said.

Finally, the researchers observed that anti–apo A-I, but not control antibodies, were associated with increases in inflammatory markers in liver cells.

Specifically, exposure to the antibodies was linked to an approximately 10-fold increase in interleukin-6 levels, as well as an approximate 25-fold increase in IL-8, and around a 7-fold increase in tumor necrosis factor–alpha.

Dr. Pagano suggested that the inflammatory effects are “probably mediated by binding anti–apo A-I antibodies to toll-like receptor 2, which has been previously described in macrophages.”

No funding was declared. The study authors disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Anti–apolipoprotein A-I (apo A-I) antibodies are common in nonalcoholic fatty liver disease and may not only drive its development but also underlie the link between NAFLD and cardiovascular disease, suggests a novel analysis.

Conducting a clinical analysis and a series of experiments, Sabrina Pagano, PhD, diagnostic department, Geneva University Hospital, and colleagues looked for anti–apo A-I antibodies in patients with NAFLD and then examined their impact on hepatic cells and inflammatory markers.

They found that nearly half of 137 patients with NAFLD were seropositive, and that the antibodies were associated with increased lipid accumulation in the liver, altered triglyceride metabolism, and proinflammatory effects on liver cells.

“We hypothesize that anti–apo A-I IgG may be a potential driver in the development of NAFLD, and further studies are needed to support anti–apo A-I IgG as a possible link between NAFLD and cardiovascular disease,” Dr. Pagano said.

The research was presented at the European Atherosclerosis Society 2021 Virtual Congress.

Asked whether anti–apo A-I antibodies could represent a potential treatment target for NAFLD, Dr. Pagano said in an interview that they have “already developed a peptide that is recognized by the antibodies in order to try to reverse the anti–apo A-I deleterious effect.”

While this was successful in vitro, “unfortunately we didn’t observe ... the peptide reverse of these anti–apo A-I effects in mice, so ... for the moment it’s a little early,” to say whether it represents a promising target.

Approached for comment, Maciej Banach, MD, PhD, full professor of cardiology, Polish Mother’s Memorial Hospital Research Institute, Lodz, said that the results are “very interesting and encouraging.”

He said that his own global burden of disease analysis, which is set to be published soon, showed that the worldwide prevalence of NAFLD is 11%, “representing almost 900 million cases,” and a more than 33% increase in prevalence in the past 30 years.

Consequently, any “attempt to have effective, especially early, diagnosis and treatment,” is highly anticipated.

Dr. Banach said the findings from the experimental analyses are “very interesting and promising,” especially regarding the proinflammatory effects of anti–apo A-I antibodies.

However, he underlined that the clinical part, looking at antibody seropositivity in patients with NAFLD, was limited by the lack of a control group, and there was no indication as to what treatment the patients received, despite it being clear that many were obese.

Dr. Banach also believes that, taking into account the patient characteristics, it is likely that most of the patients had the more severe nonalcoholic steatohepatitis, and “it would be additionally useful to see the autoantibodies levels both in NASH and NAFLD.”

Nevertheless, the clinical utility of measuring anti–apo A-I antibodies is limited at this stage.

He said that the lack of “good, easy, and cheap diagnostic methods based on both laboratory and imaging data” for NAFLD means it would be difficult to determine whether assessing antibody seropositivity “might be indeed an added value.”
 

Independent predictors

Dr. Pagano explained that anti–apo A-I antibodies, which target the major protein fraction of HDL cholesterol, are independent predictors of cardiovascular events in high-risk populations.

They are also independently associated with cardiovascular disease in the general population, as well as atherosclerotic plaque vulnerability in both mice and humans.

She said that apo A-I antibodies have a metabolic role in vivo, and have been shown in vitro to disrupt cholesterol metabolism, promoting foam cell formation.

Studies have also indicated they play a role in hepatic fibrosis, predicting the development of cirrhosis in individuals with chronic hepatitis C infection.

The team therefore set out to determine the presence of anti–apo A-I antibodies in individuals with NAFLD, defined here as fatty acid levels greater than 5% of liver weight, as well as their effect on hepatic cells.

Working with colleagues at Magna Græcia University of Catanzaro (Italy), they obtained serum samples from 137 patients with NAFLD confirmed on ultrasound.

The patients had an average age of 49 years, and 48.9% were male. The median body mass index was 31.8 kg/m². Cholesterol levels were typically in the intermediate range.

They found that 46% of the participants had anti–apo A-I IgG antibodies, “which is quite high when compared with the 15%-20% positivity that we retrieved from the general population,” Dr. Pagano said.

To explore the link between high anti–apo A-I antibodies and NAFLD, the team studied hepatic cells, treating them with anti–apo A-I IgG antibodies or control IgG antibodies, or leaving them untreated, for 24 hours.

This revealed that anti–apo A-I IgG antibodies were associated with a significant increase in liquid droplet content in hepatic cells, compared with both cells treated with control IgG (P = .0008), and untreated cells (P = .0002).

Next, the team immunized apo E knockout mice with anti–apo A-I or control IgG antibodies. After 16 weeks, they found there was a significant increase in liver lipid content in mice given anti–apo A-I antibodies versus those treated with controls (P = .03).

They then asked whether anti–apo A-I antibodies could affect triglyceride metabolism. They examined the expression of the transcription factor sterol regulatory element binding protein (SREBP) and regulation of the triglyceride and cholesterol pathways.

Treating hepatic cells again for 24 hours with anti–apo A-I IgG antibodies or control IgG antibodies, or leaving them untreated, showed that anti–apo A-I antibodies were associated with “dramatic” increases in the active form of SREBP.

They also found that expression of two key enzymes in the triglyceride pathway, fatty acid synthetase and glycerol phosphate acyltransferase, was substantially decreased in the presence anti–apo A-I antibodies.

In both experiments, the untreated hepatic cells and those exposed to control IgG antibodies showed no significant changes.

“These results suggest that negative feedback ... turns off these enzymes, probably due to the lipid overload that is found in the cells after 24 hours of anti–apo A-I treatment,” Dr. Pagano said.

Finally, the researchers observed that anti–apo A-I, but not control antibodies, were associated with increases in inflammatory markers in liver cells.

Specifically, exposure to the antibodies was linked to an approximately 10-fold increase in interleukin-6 levels, as well as an approximate 25-fold increase in IL-8, and around a 7-fold increase in tumor necrosis factor–alpha.

Dr. Pagano suggested that the inflammatory effects are “probably mediated by binding anti–apo A-I antibodies to toll-like receptor 2, which has been previously described in macrophages.”

No funding was declared. The study authors disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Anti–apolipoprotein A-I (apo A-I) antibodies are common in nonalcoholic fatty liver disease and may not only drive its development but also underlie the link between NAFLD and cardiovascular disease, suggests a novel analysis.

Conducting a clinical analysis and a series of experiments, Sabrina Pagano, PhD, diagnostic department, Geneva University Hospital, and colleagues looked for anti–apo A-I antibodies in patients with NAFLD and then examined their impact on hepatic cells and inflammatory markers.

They found that nearly half of 137 patients with NAFLD were seropositive, and that the antibodies were associated with increased lipid accumulation in the liver, altered triglyceride metabolism, and proinflammatory effects on liver cells.

“We hypothesize that anti–apo A-I IgG may be a potential driver in the development of NAFLD, and further studies are needed to support anti–apo A-I IgG as a possible link between NAFLD and cardiovascular disease,” Dr. Pagano said.

The research was presented at the European Atherosclerosis Society 2021 Virtual Congress.

Asked whether anti–apo A-I antibodies could represent a potential treatment target for NAFLD, Dr. Pagano said in an interview that they have “already developed a peptide that is recognized by the antibodies in order to try to reverse the anti–apo A-I deleterious effect.”

While this was successful in vitro, “unfortunately we didn’t observe ... the peptide reverse of these anti–apo A-I effects in mice, so ... for the moment it’s a little early,” to say whether it represents a promising target.

Approached for comment, Maciej Banach, MD, PhD, full professor of cardiology, Polish Mother’s Memorial Hospital Research Institute, Lodz, said that the results are “very interesting and encouraging.”

He said that his own global burden of disease analysis, which is set to be published soon, showed that the worldwide prevalence of NAFLD is 11%, “representing almost 900 million cases,” and a more than 33% increase in prevalence in the past 30 years.

Consequently, any “attempt to have effective, especially early, diagnosis and treatment,” is highly anticipated.

Dr. Banach said the findings from the experimental analyses are “very interesting and promising,” especially regarding the proinflammatory effects of anti–apo A-I antibodies.

However, he underlined that the clinical part, looking at antibody seropositivity in patients with NAFLD, was limited by the lack of a control group, and there was no indication as to what treatment the patients received, despite it being clear that many were obese.

Dr. Banach also believes that, taking into account the patient characteristics, it is likely that most of the patients had the more severe nonalcoholic steatohepatitis, and “it would be additionally useful to see the autoantibodies levels both in NASH and NAFLD.”

Nevertheless, the clinical utility of measuring anti–apo A-I antibodies is limited at this stage.

He said that the lack of “good, easy, and cheap diagnostic methods based on both laboratory and imaging data” for NAFLD means it would be difficult to determine whether assessing antibody seropositivity “might be indeed an added value.”
 

Independent predictors

Dr. Pagano explained that anti–apo A-I antibodies, which target the major protein fraction of HDL cholesterol, are independent predictors of cardiovascular events in high-risk populations.

They are also independently associated with cardiovascular disease in the general population, as well as atherosclerotic plaque vulnerability in both mice and humans.

She said that apo A-I antibodies have a metabolic role in vivo, and have been shown in vitro to disrupt cholesterol metabolism, promoting foam cell formation.

Studies have also indicated they play a role in hepatic fibrosis, predicting the development of cirrhosis in individuals with chronic hepatitis C infection.

The team therefore set out to determine the presence of anti–apo A-I antibodies in individuals with NAFLD, defined here as fatty acid levels greater than 5% of liver weight, as well as their effect on hepatic cells.

Working with colleagues at Magna Græcia University of Catanzaro (Italy), they obtained serum samples from 137 patients with NAFLD confirmed on ultrasound.

The patients had an average age of 49 years, and 48.9% were male. The median body mass index was 31.8 kg/m². Cholesterol levels were typically in the intermediate range.

They found that 46% of the participants had anti–apo A-I IgG antibodies, “which is quite high when compared with the 15%-20% positivity that we retrieved from the general population,” Dr. Pagano said.

To explore the link between high anti–apo A-I antibodies and NAFLD, the team studied hepatic cells, treating them with anti–apo A-I IgG antibodies or control IgG antibodies, or leaving them untreated, for 24 hours.

This revealed that anti–apo A-I IgG antibodies were associated with a significant increase in liquid droplet content in hepatic cells, compared with both cells treated with control IgG (P = .0008), and untreated cells (P = .0002).

Next, the team immunized apo E knockout mice with anti–apo A-I or control IgG antibodies. After 16 weeks, they found there was a significant increase in liver lipid content in mice given anti–apo A-I antibodies versus those treated with controls (P = .03).

They then asked whether anti–apo A-I antibodies could affect triglyceride metabolism. They examined the expression of the transcription factor sterol regulatory element binding protein (SREBP) and regulation of the triglyceride and cholesterol pathways.

Treating hepatic cells again for 24 hours with anti–apo A-I IgG antibodies or control IgG antibodies, or leaving them untreated, showed that anti–apo A-I antibodies were associated with “dramatic” increases in the active form of SREBP.

They also found that expression of two key enzymes in the triglyceride pathway, fatty acid synthetase and glycerol phosphate acyltransferase, was substantially decreased in the presence anti–apo A-I antibodies.

In both experiments, the untreated hepatic cells and those exposed to control IgG antibodies showed no significant changes.

“These results suggest that negative feedback ... turns off these enzymes, probably due to the lipid overload that is found in the cells after 24 hours of anti–apo A-I treatment,” Dr. Pagano said.

Finally, the researchers observed that anti–apo A-I, but not control antibodies, were associated with increases in inflammatory markers in liver cells.

Specifically, exposure to the antibodies was linked to an approximately 10-fold increase in interleukin-6 levels, as well as an approximate 25-fold increase in IL-8, and around a 7-fold increase in tumor necrosis factor–alpha.

Dr. Pagano suggested that the inflammatory effects are “probably mediated by binding anti–apo A-I antibodies to toll-like receptor 2, which has been previously described in macrophages.”

No funding was declared. The study authors disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

The risk for serious liver injury with obeticholic acid (Ocaliva, Intercept Pharmaceuticals) has prompted the U.S. Food and Drug Administration to restrict its use in patients with primary biliary cholangitis (PBC) and advanced cirrhosis.  

The agency has added a new contraindication to the obeticholic acid prescribing information and patient medication guide stating that the drug should not be used in patients with PBC and advanced cirrhosis. 

The boxed warning on the label has also been revised to include this information.

For patients with PBC who do not have advanced cirrhosis, the FDA believes the benefits of Ocaliva outweigh the risks, based on the original clinical trials.

Five years ago, the FDA granted accelerated approval to obeticholic acid in combination with ursodeoxycholic acid (UDCA) in adults who fail to respond adequately to UDCA, or as a monotherapy in adults who cannot tolerate UDCA.  

Since then, the FDA has identified 25 cases of serious liver injury leading to liver decompensation or liver failure in patients with PBC and cirrhosis who were taking obeticholic acid at recommended doses.

According to the FDA, 18 of the cases happened in patients with PBC and compensated cirrhosis who experienced liver injury that led to decompensation. Ten of these patients had evidence or suspicion of portal hypertension at baseline; in the other eight patients, it was unclear whether portal hypertension was present.

PBC was not expected to progress rapidly in these patients, yet they experienced accelerated clinical deterioration within months of starting obeticholic acid, the FDA said.

The median time to liver decompensation after initiating treatment was 4 months (range, 2 weeks to 10 months). Four patients with PBC and compensated cirrhosis needed a liver transplant within 1.3 years after starting obeticholic acid, and one patient died from liver failure.

The other seven cases of serious liver injury occurred in patients with PBC and decompensated cirrhosis, two of whom died. 

Although there was a temporal relationship between starting obeticholic acid and liver injury, it is difficult to distinguish a drug-induced effect from disease progression in the patients with advanced baseline liver disease, the FDA cautioned.

The median time to a new decompensation event after starting the drug was 2.5 months (range, 10 days to 8 months).

Before starting obeticholic acid, clinicians should determine whether a patient with PBC has advanced cirrhosis as the drug is now contraindicated in these patients, the FDA said.

During obeticholic acid treatment, patients should be routinely monitored for progression of PBC with laboratory and clinical assessments to determine whether the drug needs to be discontinued.

The medication should be permanently discontinued in patients with cirrhosis who progress to advanced cirrhosis.

Patients should also be monitored for clinically significant liver-related adverse reactions that may manifest as development of acute-on-chronic liver disease with nausea, vomiting, diarrhea, jaundice, scleral icterus, and/or dark urine.

Obeticholic acid should be stopped permanently in any patient who develops these symptoms, the FDA advised.

Health care professionals are encouraged to report adverse events or side effects related to the use of obeticholic acid to MedWatch, FDA’s adverse event reporting site.

A version of this article first appeared on Medscape.com.

The risk for serious liver injury with obeticholic acid (Ocaliva, Intercept Pharmaceuticals) has prompted the U.S. Food and Drug Administration to restrict its use in patients with primary biliary cholangitis (PBC) and advanced cirrhosis.  

The agency has added a new contraindication to the obeticholic acid prescribing information and patient medication guide stating that the drug should not be used in patients with PBC and advanced cirrhosis. 

The boxed warning on the label has also been revised to include this information.

For patients with PBC who do not have advanced cirrhosis, the FDA believes the benefits of Ocaliva outweigh the risks, based on the original clinical trials.

Five years ago, the FDA granted accelerated approval to obeticholic acid in combination with ursodeoxycholic acid (UDCA) in adults who fail to respond adequately to UDCA, or as a monotherapy in adults who cannot tolerate UDCA.  

Since then, the FDA has identified 25 cases of serious liver injury leading to liver decompensation or liver failure in patients with PBC and cirrhosis who were taking obeticholic acid at recommended doses.

According to the FDA, 18 of the cases happened in patients with PBC and compensated cirrhosis who experienced liver injury that led to decompensation. Ten of these patients had evidence or suspicion of portal hypertension at baseline; in the other eight patients, it was unclear whether portal hypertension was present.

PBC was not expected to progress rapidly in these patients, yet they experienced accelerated clinical deterioration within months of starting obeticholic acid, the FDA said.

The median time to liver decompensation after initiating treatment was 4 months (range, 2 weeks to 10 months). Four patients with PBC and compensated cirrhosis needed a liver transplant within 1.3 years after starting obeticholic acid, and one patient died from liver failure.

The other seven cases of serious liver injury occurred in patients with PBC and decompensated cirrhosis, two of whom died. 

Although there was a temporal relationship between starting obeticholic acid and liver injury, it is difficult to distinguish a drug-induced effect from disease progression in the patients with advanced baseline liver disease, the FDA cautioned.

The median time to a new decompensation event after starting the drug was 2.5 months (range, 10 days to 8 months).

Before starting obeticholic acid, clinicians should determine whether a patient with PBC has advanced cirrhosis as the drug is now contraindicated in these patients, the FDA said.

During obeticholic acid treatment, patients should be routinely monitored for progression of PBC with laboratory and clinical assessments to determine whether the drug needs to be discontinued.

The medication should be permanently discontinued in patients with cirrhosis who progress to advanced cirrhosis.

Patients should also be monitored for clinically significant liver-related adverse reactions that may manifest as development of acute-on-chronic liver disease with nausea, vomiting, diarrhea, jaundice, scleral icterus, and/or dark urine.

Obeticholic acid should be stopped permanently in any patient who develops these symptoms, the FDA advised.

Health care professionals are encouraged to report adverse events or side effects related to the use of obeticholic acid to MedWatch, FDA’s adverse event reporting site.

A version of this article first appeared on Medscape.com.

The risk for serious liver injury with obeticholic acid (Ocaliva, Intercept Pharmaceuticals) has prompted the U.S. Food and Drug Administration to restrict its use in patients with primary biliary cholangitis (PBC) and advanced cirrhosis.  

The agency has added a new contraindication to the obeticholic acid prescribing information and patient medication guide stating that the drug should not be used in patients with PBC and advanced cirrhosis. 

The boxed warning on the label has also been revised to include this information.

For patients with PBC who do not have advanced cirrhosis, the FDA believes the benefits of Ocaliva outweigh the risks, based on the original clinical trials.

Five years ago, the FDA granted accelerated approval to obeticholic acid in combination with ursodeoxycholic acid (UDCA) in adults who fail to respond adequately to UDCA, or as a monotherapy in adults who cannot tolerate UDCA.  

Since then, the FDA has identified 25 cases of serious liver injury leading to liver decompensation or liver failure in patients with PBC and cirrhosis who were taking obeticholic acid at recommended doses.

According to the FDA, 18 of the cases happened in patients with PBC and compensated cirrhosis who experienced liver injury that led to decompensation. Ten of these patients had evidence or suspicion of portal hypertension at baseline; in the other eight patients, it was unclear whether portal hypertension was present.

PBC was not expected to progress rapidly in these patients, yet they experienced accelerated clinical deterioration within months of starting obeticholic acid, the FDA said.

The median time to liver decompensation after initiating treatment was 4 months (range, 2 weeks to 10 months). Four patients with PBC and compensated cirrhosis needed a liver transplant within 1.3 years after starting obeticholic acid, and one patient died from liver failure.

The other seven cases of serious liver injury occurred in patients with PBC and decompensated cirrhosis, two of whom died. 

Although there was a temporal relationship between starting obeticholic acid and liver injury, it is difficult to distinguish a drug-induced effect from disease progression in the patients with advanced baseline liver disease, the FDA cautioned.

The median time to a new decompensation event after starting the drug was 2.5 months (range, 10 days to 8 months).

Before starting obeticholic acid, clinicians should determine whether a patient with PBC has advanced cirrhosis as the drug is now contraindicated in these patients, the FDA said.

During obeticholic acid treatment, patients should be routinely monitored for progression of PBC with laboratory and clinical assessments to determine whether the drug needs to be discontinued.

The medication should be permanently discontinued in patients with cirrhosis who progress to advanced cirrhosis.

Patients should also be monitored for clinically significant liver-related adverse reactions that may manifest as development of acute-on-chronic liver disease with nausea, vomiting, diarrhea, jaundice, scleral icterus, and/or dark urine.

Obeticholic acid should be stopped permanently in any patient who develops these symptoms, the FDA advised.

Health care professionals are encouraged to report adverse events or side effects related to the use of obeticholic acid to MedWatch, FDA’s adverse event reporting site.

A version of this article first appeared on Medscape.com.