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Complications cluster in inflammatory arthritis patients after total knee replacement
CHICAGO – Patients with an inflammatory arthritis had significantly higher rates of infections, transfusions, and readmissions following total knee replacement than did patients without inflammatory arthritis in a study of more than 137,000 Americans who underwent this surgery.
A sampling of U.S. patients who underwent total knee arthroplasty (TKA) during 2007-2016 showed that among the small percentage of these patients who had an inflammatory arthritis (IA), the rate of periprosthetic joint or wound infection while hospitalized or out to 30 days after surgery was a statistically significant 64% higher relative to patients without inflammatory arthritis, after adjustment for several demographic and clinical confounders, including recent glucocorticoid treatment, Susan M. Goodman, MD, said at the annual meeting of the American College of Rheumatology. The analysis also showed a statistically significant 46% higher relative rate of hospital readmission for any cause during the 90 days after surgery, and a significant 39% relative increase in blood transfusions during the 30 days after TKA in the IA patients.
“These results have important implications for evolving bundled payment models” for TKA, said Dr. Goodman, a rheumatologist at the Hospital for Special Surgery in New York. “Hospitals should receive commensurate resources to maintain access to total TKA for patients with IA.”
For this analysis, Dr. Goodman and her associates classified IA as a patient with a recorded diagnosis of rheumatoid arthritis, spondyloarthritis, or systemic lupus erythematosus if the patient had also received treatment during the year before surgery with a disease-modifying antirheumatic drug, a biologic agent, or a drug that treats systemic lupus erythematosus.
Complications following TKA became a particular concern to hospitals starting in 2013 when the Centers for Medicare & Medicaid Services began a program that penalized hospitals for outcomes such as excessive readmissions following selected types of hospitalizations and also with recent steps to bundle TKA reimbursement with related 90-day outcomes.
“My concern is to ensure that patients with IA aren’t penalized and can maintain access” to TKA despite recent policy moves by the CMS. Faced with potential disincentives to treat patients with an IA, “hospitals might cherry pick patients,” Dr. Goodman said in an interview. The new findings “are a reason for administrators to argue for patients with IA to come out of the cost bundle.”
Dr. Goodman expressed hope that future policies will better reflect the higher levels of risk faced by patients with an IA undergoing TKA. CMS “is pretty responsive,” she said.
The study used data collected by Humana for about 25 million American health insurance beneficiaries during 2007-2016, which included 137,550 people who underwent a TKA. Of these, 3,067 (2%) met the study’s definition for IA, and 134,483 did not. Most of those who did not meet the definition likely had osteoarthritis, Dr. Goodman said. This low percentage of U.S. TKA patients with IA was consistent with numbers in prior reports.
The researchers calculated the relative risk of the IA patients, compared with all the others, for nine potential complications, including acute MI, pneumonia, sepsis, pulmonary embolism, and death. The complications with significantly higher rates among the IA patients after confounder adjustment were 30-day infections, 30-day transfusions, and 90-day readmissions.
Dr. Goodman had no relevant disclosures.
SOURCE: Richardson S et al. Arthritis Rheumatol. 2018;70(Suppl 10): Abstract 1932.
CHICAGO – Patients with an inflammatory arthritis had significantly higher rates of infections, transfusions, and readmissions following total knee replacement than did patients without inflammatory arthritis in a study of more than 137,000 Americans who underwent this surgery.
A sampling of U.S. patients who underwent total knee arthroplasty (TKA) during 2007-2016 showed that among the small percentage of these patients who had an inflammatory arthritis (IA), the rate of periprosthetic joint or wound infection while hospitalized or out to 30 days after surgery was a statistically significant 64% higher relative to patients without inflammatory arthritis, after adjustment for several demographic and clinical confounders, including recent glucocorticoid treatment, Susan M. Goodman, MD, said at the annual meeting of the American College of Rheumatology. The analysis also showed a statistically significant 46% higher relative rate of hospital readmission for any cause during the 90 days after surgery, and a significant 39% relative increase in blood transfusions during the 30 days after TKA in the IA patients.
“These results have important implications for evolving bundled payment models” for TKA, said Dr. Goodman, a rheumatologist at the Hospital for Special Surgery in New York. “Hospitals should receive commensurate resources to maintain access to total TKA for patients with IA.”
For this analysis, Dr. Goodman and her associates classified IA as a patient with a recorded diagnosis of rheumatoid arthritis, spondyloarthritis, or systemic lupus erythematosus if the patient had also received treatment during the year before surgery with a disease-modifying antirheumatic drug, a biologic agent, or a drug that treats systemic lupus erythematosus.
Complications following TKA became a particular concern to hospitals starting in 2013 when the Centers for Medicare & Medicaid Services began a program that penalized hospitals for outcomes such as excessive readmissions following selected types of hospitalizations and also with recent steps to bundle TKA reimbursement with related 90-day outcomes.
“My concern is to ensure that patients with IA aren’t penalized and can maintain access” to TKA despite recent policy moves by the CMS. Faced with potential disincentives to treat patients with an IA, “hospitals might cherry pick patients,” Dr. Goodman said in an interview. The new findings “are a reason for administrators to argue for patients with IA to come out of the cost bundle.”
Dr. Goodman expressed hope that future policies will better reflect the higher levels of risk faced by patients with an IA undergoing TKA. CMS “is pretty responsive,” she said.
The study used data collected by Humana for about 25 million American health insurance beneficiaries during 2007-2016, which included 137,550 people who underwent a TKA. Of these, 3,067 (2%) met the study’s definition for IA, and 134,483 did not. Most of those who did not meet the definition likely had osteoarthritis, Dr. Goodman said. This low percentage of U.S. TKA patients with IA was consistent with numbers in prior reports.
The researchers calculated the relative risk of the IA patients, compared with all the others, for nine potential complications, including acute MI, pneumonia, sepsis, pulmonary embolism, and death. The complications with significantly higher rates among the IA patients after confounder adjustment were 30-day infections, 30-day transfusions, and 90-day readmissions.
Dr. Goodman had no relevant disclosures.
SOURCE: Richardson S et al. Arthritis Rheumatol. 2018;70(Suppl 10): Abstract 1932.
CHICAGO – Patients with an inflammatory arthritis had significantly higher rates of infections, transfusions, and readmissions following total knee replacement than did patients without inflammatory arthritis in a study of more than 137,000 Americans who underwent this surgery.
A sampling of U.S. patients who underwent total knee arthroplasty (TKA) during 2007-2016 showed that among the small percentage of these patients who had an inflammatory arthritis (IA), the rate of periprosthetic joint or wound infection while hospitalized or out to 30 days after surgery was a statistically significant 64% higher relative to patients without inflammatory arthritis, after adjustment for several demographic and clinical confounders, including recent glucocorticoid treatment, Susan M. Goodman, MD, said at the annual meeting of the American College of Rheumatology. The analysis also showed a statistically significant 46% higher relative rate of hospital readmission for any cause during the 90 days after surgery, and a significant 39% relative increase in blood transfusions during the 30 days after TKA in the IA patients.
“These results have important implications for evolving bundled payment models” for TKA, said Dr. Goodman, a rheumatologist at the Hospital for Special Surgery in New York. “Hospitals should receive commensurate resources to maintain access to total TKA for patients with IA.”
For this analysis, Dr. Goodman and her associates classified IA as a patient with a recorded diagnosis of rheumatoid arthritis, spondyloarthritis, or systemic lupus erythematosus if the patient had also received treatment during the year before surgery with a disease-modifying antirheumatic drug, a biologic agent, or a drug that treats systemic lupus erythematosus.
Complications following TKA became a particular concern to hospitals starting in 2013 when the Centers for Medicare & Medicaid Services began a program that penalized hospitals for outcomes such as excessive readmissions following selected types of hospitalizations and also with recent steps to bundle TKA reimbursement with related 90-day outcomes.
“My concern is to ensure that patients with IA aren’t penalized and can maintain access” to TKA despite recent policy moves by the CMS. Faced with potential disincentives to treat patients with an IA, “hospitals might cherry pick patients,” Dr. Goodman said in an interview. The new findings “are a reason for administrators to argue for patients with IA to come out of the cost bundle.”
Dr. Goodman expressed hope that future policies will better reflect the higher levels of risk faced by patients with an IA undergoing TKA. CMS “is pretty responsive,” she said.
The study used data collected by Humana for about 25 million American health insurance beneficiaries during 2007-2016, which included 137,550 people who underwent a TKA. Of these, 3,067 (2%) met the study’s definition for IA, and 134,483 did not. Most of those who did not meet the definition likely had osteoarthritis, Dr. Goodman said. This low percentage of U.S. TKA patients with IA was consistent with numbers in prior reports.
The researchers calculated the relative risk of the IA patients, compared with all the others, for nine potential complications, including acute MI, pneumonia, sepsis, pulmonary embolism, and death. The complications with significantly higher rates among the IA patients after confounder adjustment were 30-day infections, 30-day transfusions, and 90-day readmissions.
Dr. Goodman had no relevant disclosures.
SOURCE: Richardson S et al. Arthritis Rheumatol. 2018;70(Suppl 10): Abstract 1932.
REPORTING FROM THE ACR ANNUAL MEETING
Key clinical point: Complications were more common after total knee arthroplasty in patients with an inflammatory arthritis.
Major finding: Inflammatory arthritis patients had a 64% higher rate of infections after total knee arthroplasty, compared with patients without inflammatory arthritis.
Study details: Data analysis for 137,550 Americans who underwent total knee arthroplasty during 2007-2016.
Disclosures: Dr. Goodman had no relevant disclosures.
Source: Richardson S et al. Arthritis Rheumatol. 2018;70(Suppl 10): Abstract 1932.
FDA approves adalimumab biosimilar Hyrimoz
The Food and Drug Administration has approved the adalimumab biosimilar Hyrimoz (adalimumab-adaz) for a variety of conditions, according to Sandoz, the drug’s manufacturer and a division of Novartis.
FDA approval for Hyrimoz is based on a randomized, double-blind, three-arm, parallel biosimilarity study that demonstrated equivalence for all primary pharmacokinetic parameters, according to the press release. A second study confirmed these results in patients with moderate to severe plaque psoriasis, with Hyrimoz having a safety profile similar to that of adalimumab. Hyrimoz was approved in Europe in July 2018.
Hyrimoz has been approved to treat rheumatoid arthritis, juvenile idiopathic arthritis in patients aged 4 years and older, psoriatic arthritis, ankylosing spondylitis, adult Crohn’s disease, ulcerative colitis, and plaque psoriasis. The most common adverse events associated with the drug, according to the label, are infections, injection site reactions, headache, and rash.
Hyrimoz is the third adalimumab biosimilar approved by the FDA.
“Biosimilars can help people suffering from chronic, debilitating conditions gain expanded access to important medicines that may change the outcome of their disease. With the FDA approval of Hyrimoz, Sandoz is one step closer to offering U.S. patients with autoimmune diseases the same critical access already available in Europe,” Stefan Hendriks, global head of biopharmaceuticals at Sandoz, said in the press release.
Find the full press release on the Novartis website.
The Food and Drug Administration has approved the adalimumab biosimilar Hyrimoz (adalimumab-adaz) for a variety of conditions, according to Sandoz, the drug’s manufacturer and a division of Novartis.
FDA approval for Hyrimoz is based on a randomized, double-blind, three-arm, parallel biosimilarity study that demonstrated equivalence for all primary pharmacokinetic parameters, according to the press release. A second study confirmed these results in patients with moderate to severe plaque psoriasis, with Hyrimoz having a safety profile similar to that of adalimumab. Hyrimoz was approved in Europe in July 2018.
Hyrimoz has been approved to treat rheumatoid arthritis, juvenile idiopathic arthritis in patients aged 4 years and older, psoriatic arthritis, ankylosing spondylitis, adult Crohn’s disease, ulcerative colitis, and plaque psoriasis. The most common adverse events associated with the drug, according to the label, are infections, injection site reactions, headache, and rash.
Hyrimoz is the third adalimumab biosimilar approved by the FDA.
“Biosimilars can help people suffering from chronic, debilitating conditions gain expanded access to important medicines that may change the outcome of their disease. With the FDA approval of Hyrimoz, Sandoz is one step closer to offering U.S. patients with autoimmune diseases the same critical access already available in Europe,” Stefan Hendriks, global head of biopharmaceuticals at Sandoz, said in the press release.
Find the full press release on the Novartis website.
The Food and Drug Administration has approved the adalimumab biosimilar Hyrimoz (adalimumab-adaz) for a variety of conditions, according to Sandoz, the drug’s manufacturer and a division of Novartis.
FDA approval for Hyrimoz is based on a randomized, double-blind, three-arm, parallel biosimilarity study that demonstrated equivalence for all primary pharmacokinetic parameters, according to the press release. A second study confirmed these results in patients with moderate to severe plaque psoriasis, with Hyrimoz having a safety profile similar to that of adalimumab. Hyrimoz was approved in Europe in July 2018.
Hyrimoz has been approved to treat rheumatoid arthritis, juvenile idiopathic arthritis in patients aged 4 years and older, psoriatic arthritis, ankylosing spondylitis, adult Crohn’s disease, ulcerative colitis, and plaque psoriasis. The most common adverse events associated with the drug, according to the label, are infections, injection site reactions, headache, and rash.
Hyrimoz is the third adalimumab biosimilar approved by the FDA.
“Biosimilars can help people suffering from chronic, debilitating conditions gain expanded access to important medicines that may change the outcome of their disease. With the FDA approval of Hyrimoz, Sandoz is one step closer to offering U.S. patients with autoimmune diseases the same critical access already available in Europe,” Stefan Hendriks, global head of biopharmaceuticals at Sandoz, said in the press release.
Find the full press release on the Novartis website.
ACR readies first-ever guidelines on managing reproductive health in rheumatology
CHICAGO – Help is on the way for rheumatologists who may feel out of their depth regarding reproductive health issues in their patients.
for internal review in draft form. Lisa R. Sammaritano, MD, a leader of the expert panel that developed the evidence-based recommendations, shared highlights of the forthcoming guidelines at the annual meeting of the American College of Rheumatology.
“Our patients, fortunately, are pursuing pregnancy more often now than in years past. One of the key messages of the guidelines is that patients really do want to discuss these topics with their rheumatologist, even though that often does not happen now. What patients told us [in the guideline-development process] is their rheumatologist knows them better than their gynecologist or any of their other doctors because we have followed them for a long period of time and we understand their disease and their symptoms. They really want our input on questions about contraception, when to plan a pregnancy, and medication use,” said Dr. Sammaritano of the Hospital for Special Surgery and Cornell University in New York.
The guidelines were created over the course of a year and a half with extensive input from ob.gyns., as well as a patient panel. The project included a systematic review of more than 300 published studies in which guideline panelists attempt to find answers to an initial list of 370 questions. Dr. Sammaritano predicted that the guidelines will prove to be useful not only for rheumatologists, but for their colleagues in ob.gyn. as well. Just as rheumatologists likely haven’t kept up with the sea changes that have occurred in ob.gyn. since their medical school days, most ob.gyns. know little about rheumatic diseases.
“There’s room for education on both sides,” she observed in an interview. “I have had to write letters to gynecologists to get them to put my patients with antiphospholipid antibodies on a contraceptive that includes a progestin because the labeling says, ‘May increase risk of thrombosis.’ And yet if you look at the literature, most of the progestins do not increase the risk of thrombosis, even in patients who are already at increased risk because of a genetic prothrombotic abnormality. I practically had to sign my life away to get a gynecologist to put a progestin-containing IUD in my patient, whereas the risk of thrombosis to my patient with an unplanned pregnancy would have been 10-fold or 100-fold higher. Unplanned pregnancy is dangerous for patients with our diseases.”
And yet, she noted, half of all pregnancies in the United States are unplanned. Among women with rheumatic diseases, the proportion may well be even higher in light of their documented low rate of utilization of effective contraception.
A publication date for the guidelines won’t be set until the review is completed, but the plan is to issue three separate documents. One will address reproductive health outside of pregnancy, with key topics to include contraception, fertility preservation, menopause, and hormone replacement therapy. The second document will focus on pregnancy management, with special attention devoted to women with lupus or antiphospholipid antibodies because they are at particularly high risk of adverse pregnancy outcomes. The third document will be devoted to medications, covering issues including which medications can be continued during pregnancy and when to safely stop the ones that can’t. This section will address both maternal and paternal use of rheumatologic medications, the latter being a topic below the radar of ob.gyns.
The three medications whose paternal use in pregnancy generate the most questions in clinical practice are methotrexate, cyclophosphamide, and sulfasalazine.
“I cannot tell you how many times I’ve been asked whether male patients with rheumatic diseases need to stop their methotrexate before they plan to father a child – that’s been a big one. The answer is they don’t need to stop, but that’s a conditional recommendation because the product label still says to stop it 3 months before. But that’s based on theoretical concerns, and all the data support a lack of teratogenicity for men using methotrexate prior to and during pregnancy,” Dr. Sammaritano said.
Men on cyclophosphamide absolutely have to stop the drug 3 months before pregnancy because the drug causes DNA fragmentation in the sperm. Sulfasalazine is known to impair male fertility. The ACR guidelines will recommend that men continue the drug, but if pregnancy doesn’t occur within a reasonable time, then it’s appropriate to get a semen analysis rather than stopping sulfasalazine unnecessarily.
American College of Obstetricians and Gynecologists guidelines now recommend long-acting reversible contraception, including IUDs and progestin implants, as first-line contraception for all women. The ACR draft guidelines strongly recommend the same.
“That is new. The use of this form of contraception in women with rheumatic diseases is quite low. In general, our patients don’t use contraception as often as other women, and when they do, they don’t use effective contraception. There are many theories as to why that may be: perhaps it’s a focus on the more immediate issues of their rheumatic disease that doesn’t allow their rheumatologist to get to the point of discussing contraception,” according to Dr. Sammaritano.
Many rheumatologists will be pleasantly surprised to learn that the problem of increased risk of pelvic inflammatory disease associated with earlier-generation IUDs is no longer an issue with the current devices. And contrary to a misconception among some ob.gyns., autoimmune disease will not cause a woman to reject her IUD.
The ACR guidelines recommend continuing hydroxychloroquine in lupus patients during pregnancy – and considering starting the drug in those not already on it – because of strong evidence supporting both safety and benefit for mother and baby.
“We are recommending the use of low-dose aspirin for patients with lupus and antiphospholipid antibodies because those two conditions increase the risk for preeclampsia, and the ob.gyns. routinely use low-dose aspirin starting toward the end of the first trimester as preventive therapy. Large studies show that it reduces the risk,” she continued.
Dr. Sammaritano cautioned that the literature on the use of rheumatologic medications in pregnancy and breast feeding is generally weak – and in the case of the new oral small molecule JAK inhibitors, essentially nonexistent.
“A lot of our recommendations are conditional because we did not feel that the data support a strong recommendation. But you have to do something. As long as you communicate the idea that we’re doing the best we can with what information is available, I think patients will respond to that,” the rheumatologist said.
She reported having no financial conflicts regarding her presentation.
CHICAGO – Help is on the way for rheumatologists who may feel out of their depth regarding reproductive health issues in their patients.
for internal review in draft form. Lisa R. Sammaritano, MD, a leader of the expert panel that developed the evidence-based recommendations, shared highlights of the forthcoming guidelines at the annual meeting of the American College of Rheumatology.
“Our patients, fortunately, are pursuing pregnancy more often now than in years past. One of the key messages of the guidelines is that patients really do want to discuss these topics with their rheumatologist, even though that often does not happen now. What patients told us [in the guideline-development process] is their rheumatologist knows them better than their gynecologist or any of their other doctors because we have followed them for a long period of time and we understand their disease and their symptoms. They really want our input on questions about contraception, when to plan a pregnancy, and medication use,” said Dr. Sammaritano of the Hospital for Special Surgery and Cornell University in New York.
The guidelines were created over the course of a year and a half with extensive input from ob.gyns., as well as a patient panel. The project included a systematic review of more than 300 published studies in which guideline panelists attempt to find answers to an initial list of 370 questions. Dr. Sammaritano predicted that the guidelines will prove to be useful not only for rheumatologists, but for their colleagues in ob.gyn. as well. Just as rheumatologists likely haven’t kept up with the sea changes that have occurred in ob.gyn. since their medical school days, most ob.gyns. know little about rheumatic diseases.
“There’s room for education on both sides,” she observed in an interview. “I have had to write letters to gynecologists to get them to put my patients with antiphospholipid antibodies on a contraceptive that includes a progestin because the labeling says, ‘May increase risk of thrombosis.’ And yet if you look at the literature, most of the progestins do not increase the risk of thrombosis, even in patients who are already at increased risk because of a genetic prothrombotic abnormality. I practically had to sign my life away to get a gynecologist to put a progestin-containing IUD in my patient, whereas the risk of thrombosis to my patient with an unplanned pregnancy would have been 10-fold or 100-fold higher. Unplanned pregnancy is dangerous for patients with our diseases.”
And yet, she noted, half of all pregnancies in the United States are unplanned. Among women with rheumatic diseases, the proportion may well be even higher in light of their documented low rate of utilization of effective contraception.
A publication date for the guidelines won’t be set until the review is completed, but the plan is to issue three separate documents. One will address reproductive health outside of pregnancy, with key topics to include contraception, fertility preservation, menopause, and hormone replacement therapy. The second document will focus on pregnancy management, with special attention devoted to women with lupus or antiphospholipid antibodies because they are at particularly high risk of adverse pregnancy outcomes. The third document will be devoted to medications, covering issues including which medications can be continued during pregnancy and when to safely stop the ones that can’t. This section will address both maternal and paternal use of rheumatologic medications, the latter being a topic below the radar of ob.gyns.
The three medications whose paternal use in pregnancy generate the most questions in clinical practice are methotrexate, cyclophosphamide, and sulfasalazine.
“I cannot tell you how many times I’ve been asked whether male patients with rheumatic diseases need to stop their methotrexate before they plan to father a child – that’s been a big one. The answer is they don’t need to stop, but that’s a conditional recommendation because the product label still says to stop it 3 months before. But that’s based on theoretical concerns, and all the data support a lack of teratogenicity for men using methotrexate prior to and during pregnancy,” Dr. Sammaritano said.
Men on cyclophosphamide absolutely have to stop the drug 3 months before pregnancy because the drug causes DNA fragmentation in the sperm. Sulfasalazine is known to impair male fertility. The ACR guidelines will recommend that men continue the drug, but if pregnancy doesn’t occur within a reasonable time, then it’s appropriate to get a semen analysis rather than stopping sulfasalazine unnecessarily.
American College of Obstetricians and Gynecologists guidelines now recommend long-acting reversible contraception, including IUDs and progestin implants, as first-line contraception for all women. The ACR draft guidelines strongly recommend the same.
“That is new. The use of this form of contraception in women with rheumatic diseases is quite low. In general, our patients don’t use contraception as often as other women, and when they do, they don’t use effective contraception. There are many theories as to why that may be: perhaps it’s a focus on the more immediate issues of their rheumatic disease that doesn’t allow their rheumatologist to get to the point of discussing contraception,” according to Dr. Sammaritano.
Many rheumatologists will be pleasantly surprised to learn that the problem of increased risk of pelvic inflammatory disease associated with earlier-generation IUDs is no longer an issue with the current devices. And contrary to a misconception among some ob.gyns., autoimmune disease will not cause a woman to reject her IUD.
The ACR guidelines recommend continuing hydroxychloroquine in lupus patients during pregnancy – and considering starting the drug in those not already on it – because of strong evidence supporting both safety and benefit for mother and baby.
“We are recommending the use of low-dose aspirin for patients with lupus and antiphospholipid antibodies because those two conditions increase the risk for preeclampsia, and the ob.gyns. routinely use low-dose aspirin starting toward the end of the first trimester as preventive therapy. Large studies show that it reduces the risk,” she continued.
Dr. Sammaritano cautioned that the literature on the use of rheumatologic medications in pregnancy and breast feeding is generally weak – and in the case of the new oral small molecule JAK inhibitors, essentially nonexistent.
“A lot of our recommendations are conditional because we did not feel that the data support a strong recommendation. But you have to do something. As long as you communicate the idea that we’re doing the best we can with what information is available, I think patients will respond to that,” the rheumatologist said.
She reported having no financial conflicts regarding her presentation.
CHICAGO – Help is on the way for rheumatologists who may feel out of their depth regarding reproductive health issues in their patients.
for internal review in draft form. Lisa R. Sammaritano, MD, a leader of the expert panel that developed the evidence-based recommendations, shared highlights of the forthcoming guidelines at the annual meeting of the American College of Rheumatology.
“Our patients, fortunately, are pursuing pregnancy more often now than in years past. One of the key messages of the guidelines is that patients really do want to discuss these topics with their rheumatologist, even though that often does not happen now. What patients told us [in the guideline-development process] is their rheumatologist knows them better than their gynecologist or any of their other doctors because we have followed them for a long period of time and we understand their disease and their symptoms. They really want our input on questions about contraception, when to plan a pregnancy, and medication use,” said Dr. Sammaritano of the Hospital for Special Surgery and Cornell University in New York.
The guidelines were created over the course of a year and a half with extensive input from ob.gyns., as well as a patient panel. The project included a systematic review of more than 300 published studies in which guideline panelists attempt to find answers to an initial list of 370 questions. Dr. Sammaritano predicted that the guidelines will prove to be useful not only for rheumatologists, but for their colleagues in ob.gyn. as well. Just as rheumatologists likely haven’t kept up with the sea changes that have occurred in ob.gyn. since their medical school days, most ob.gyns. know little about rheumatic diseases.
“There’s room for education on both sides,” she observed in an interview. “I have had to write letters to gynecologists to get them to put my patients with antiphospholipid antibodies on a contraceptive that includes a progestin because the labeling says, ‘May increase risk of thrombosis.’ And yet if you look at the literature, most of the progestins do not increase the risk of thrombosis, even in patients who are already at increased risk because of a genetic prothrombotic abnormality. I practically had to sign my life away to get a gynecologist to put a progestin-containing IUD in my patient, whereas the risk of thrombosis to my patient with an unplanned pregnancy would have been 10-fold or 100-fold higher. Unplanned pregnancy is dangerous for patients with our diseases.”
And yet, she noted, half of all pregnancies in the United States are unplanned. Among women with rheumatic diseases, the proportion may well be even higher in light of their documented low rate of utilization of effective contraception.
A publication date for the guidelines won’t be set until the review is completed, but the plan is to issue three separate documents. One will address reproductive health outside of pregnancy, with key topics to include contraception, fertility preservation, menopause, and hormone replacement therapy. The second document will focus on pregnancy management, with special attention devoted to women with lupus or antiphospholipid antibodies because they are at particularly high risk of adverse pregnancy outcomes. The third document will be devoted to medications, covering issues including which medications can be continued during pregnancy and when to safely stop the ones that can’t. This section will address both maternal and paternal use of rheumatologic medications, the latter being a topic below the radar of ob.gyns.
The three medications whose paternal use in pregnancy generate the most questions in clinical practice are methotrexate, cyclophosphamide, and sulfasalazine.
“I cannot tell you how many times I’ve been asked whether male patients with rheumatic diseases need to stop their methotrexate before they plan to father a child – that’s been a big one. The answer is they don’t need to stop, but that’s a conditional recommendation because the product label still says to stop it 3 months before. But that’s based on theoretical concerns, and all the data support a lack of teratogenicity for men using methotrexate prior to and during pregnancy,” Dr. Sammaritano said.
Men on cyclophosphamide absolutely have to stop the drug 3 months before pregnancy because the drug causes DNA fragmentation in the sperm. Sulfasalazine is known to impair male fertility. The ACR guidelines will recommend that men continue the drug, but if pregnancy doesn’t occur within a reasonable time, then it’s appropriate to get a semen analysis rather than stopping sulfasalazine unnecessarily.
American College of Obstetricians and Gynecologists guidelines now recommend long-acting reversible contraception, including IUDs and progestin implants, as first-line contraception for all women. The ACR draft guidelines strongly recommend the same.
“That is new. The use of this form of contraception in women with rheumatic diseases is quite low. In general, our patients don’t use contraception as often as other women, and when they do, they don’t use effective contraception. There are many theories as to why that may be: perhaps it’s a focus on the more immediate issues of their rheumatic disease that doesn’t allow their rheumatologist to get to the point of discussing contraception,” according to Dr. Sammaritano.
Many rheumatologists will be pleasantly surprised to learn that the problem of increased risk of pelvic inflammatory disease associated with earlier-generation IUDs is no longer an issue with the current devices. And contrary to a misconception among some ob.gyns., autoimmune disease will not cause a woman to reject her IUD.
The ACR guidelines recommend continuing hydroxychloroquine in lupus patients during pregnancy – and considering starting the drug in those not already on it – because of strong evidence supporting both safety and benefit for mother and baby.
“We are recommending the use of low-dose aspirin for patients with lupus and antiphospholipid antibodies because those two conditions increase the risk for preeclampsia, and the ob.gyns. routinely use low-dose aspirin starting toward the end of the first trimester as preventive therapy. Large studies show that it reduces the risk,” she continued.
Dr. Sammaritano cautioned that the literature on the use of rheumatologic medications in pregnancy and breast feeding is generally weak – and in the case of the new oral small molecule JAK inhibitors, essentially nonexistent.
“A lot of our recommendations are conditional because we did not feel that the data support a strong recommendation. But you have to do something. As long as you communicate the idea that we’re doing the best we can with what information is available, I think patients will respond to that,” the rheumatologist said.
She reported having no financial conflicts regarding her presentation.
REPORTING FROM THE ACR ANNUAL MEETING
Low BMD and spinal syndesmophytes predict radiographic progression in axSpA
Low bone mineral density and the presence of existing spinal syndesmophytes predict the formation of new spinal bony growths and radiographic progression in axial spondyloarthritis (axSpA) at 2 years, according to research conducted by Hyoung Rae Kim of the Catholic University of Korea, Seoul, South Korea, and colleagues.
The investigators noted that low bone mass in ankylosing spondyloarthritis (AS) had been linked in previous studies to spinal structural damage yet “despite the identification of this relationship, it is not yet known whether the presence of low bone mass can independently predict radiographic spinal progression in axSpA patients.”
In order to evaluate the association between low bone mass and the formation of new syndesmophytes and to investigate whether low bone mineral density (BMD) independently predicted radiographic progression in axSpA, the researchers enrolled 119 patients with definite axSpA into their study, published in Arthritis Research & Therapy.
They defined low BMD as z scores of less than or equal to –2.0 and spinal radiographic progression as worsening of the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) by 2 or more points over the 2-year follow-up period.
Overall, 34 (29%) of the patients had syndesmophytes at baseline, 90 (76%) had radiographic sacroiliitis fulfilling the modified New York criteria for the classification of AS, and 19 (16%) had low BMD.
At 2 years, new syndesmophytes had developed in 22 (21%) of the patients. New syndesmophyte formation occurred in 15% of patients without low BMD and in 37% of patients with low BMD (P = .047).
In the multivariable analysis, current smoking (odds ratio, 3.0; 95% confidence interval, 1.1-7.7), the presence of syndesmophytes (OR, 4.6; 95% CI, 1.8-11.9); and low BMD at baseline (OR, 3.6; 95% CI, 1.2-11.2) were independently associated with significant spinal progression, the investigators reported.
The presence of baseline syndesmophytes and low BMD at any site (OR, 5.5; 95% CI, 2.0-15.2; and OR, 3.6; 95% CI, 1.1-11.8, respectively) was identified by the investigators as significant predictors of new syndesmophytes.
“The presence of a syndesmophyte at baseline and low BMD were predictors of the formation of new syndesmophytes and significant mSASSS progression. … This study is the first to demonstrate that low BMD predicts radiographic progression in axSpA,” they concluded.
The investigators noted that a potential driving mechanism for the ankylosing process was bone loss resulting from chronic inflammation and the associated changes in bone microarchitecture.
“The inflammatory process induces bone loss, which affects the microarchitecture in the trabecular bone, thereby leading to instability. Reduced bone strength triggers a stabilizing anabolic effort that results in bone formation,” they wrote.
“Our results suggest that successful anti-inflammatory treatment reduces inflammation and allows the bone metabolism to normalize, thereby taking away the compensatory anabolic response that leads to new bone formation in the cortical bone of the spine,” they said.
They noted that their study was limited by its small sample and their findings needed confirmation in larger cohorts of axSpA patients.
SOURCE: Arthritis Res Ther. 2018 Oct 16. doi: 10.1186/s13075-018-1731-8.
Low bone mineral density and the presence of existing spinal syndesmophytes predict the formation of new spinal bony growths and radiographic progression in axial spondyloarthritis (axSpA) at 2 years, according to research conducted by Hyoung Rae Kim of the Catholic University of Korea, Seoul, South Korea, and colleagues.
The investigators noted that low bone mass in ankylosing spondyloarthritis (AS) had been linked in previous studies to spinal structural damage yet “despite the identification of this relationship, it is not yet known whether the presence of low bone mass can independently predict radiographic spinal progression in axSpA patients.”
In order to evaluate the association between low bone mass and the formation of new syndesmophytes and to investigate whether low bone mineral density (BMD) independently predicted radiographic progression in axSpA, the researchers enrolled 119 patients with definite axSpA into their study, published in Arthritis Research & Therapy.
They defined low BMD as z scores of less than or equal to –2.0 and spinal radiographic progression as worsening of the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) by 2 or more points over the 2-year follow-up period.
Overall, 34 (29%) of the patients had syndesmophytes at baseline, 90 (76%) had radiographic sacroiliitis fulfilling the modified New York criteria for the classification of AS, and 19 (16%) had low BMD.
At 2 years, new syndesmophytes had developed in 22 (21%) of the patients. New syndesmophyte formation occurred in 15% of patients without low BMD and in 37% of patients with low BMD (P = .047).
In the multivariable analysis, current smoking (odds ratio, 3.0; 95% confidence interval, 1.1-7.7), the presence of syndesmophytes (OR, 4.6; 95% CI, 1.8-11.9); and low BMD at baseline (OR, 3.6; 95% CI, 1.2-11.2) were independently associated with significant spinal progression, the investigators reported.
The presence of baseline syndesmophytes and low BMD at any site (OR, 5.5; 95% CI, 2.0-15.2; and OR, 3.6; 95% CI, 1.1-11.8, respectively) was identified by the investigators as significant predictors of new syndesmophytes.
“The presence of a syndesmophyte at baseline and low BMD were predictors of the formation of new syndesmophytes and significant mSASSS progression. … This study is the first to demonstrate that low BMD predicts radiographic progression in axSpA,” they concluded.
The investigators noted that a potential driving mechanism for the ankylosing process was bone loss resulting from chronic inflammation and the associated changes in bone microarchitecture.
“The inflammatory process induces bone loss, which affects the microarchitecture in the trabecular bone, thereby leading to instability. Reduced bone strength triggers a stabilizing anabolic effort that results in bone formation,” they wrote.
“Our results suggest that successful anti-inflammatory treatment reduces inflammation and allows the bone metabolism to normalize, thereby taking away the compensatory anabolic response that leads to new bone formation in the cortical bone of the spine,” they said.
They noted that their study was limited by its small sample and their findings needed confirmation in larger cohorts of axSpA patients.
SOURCE: Arthritis Res Ther. 2018 Oct 16. doi: 10.1186/s13075-018-1731-8.
Low bone mineral density and the presence of existing spinal syndesmophytes predict the formation of new spinal bony growths and radiographic progression in axial spondyloarthritis (axSpA) at 2 years, according to research conducted by Hyoung Rae Kim of the Catholic University of Korea, Seoul, South Korea, and colleagues.
The investigators noted that low bone mass in ankylosing spondyloarthritis (AS) had been linked in previous studies to spinal structural damage yet “despite the identification of this relationship, it is not yet known whether the presence of low bone mass can independently predict radiographic spinal progression in axSpA patients.”
In order to evaluate the association between low bone mass and the formation of new syndesmophytes and to investigate whether low bone mineral density (BMD) independently predicted radiographic progression in axSpA, the researchers enrolled 119 patients with definite axSpA into their study, published in Arthritis Research & Therapy.
They defined low BMD as z scores of less than or equal to –2.0 and spinal radiographic progression as worsening of the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS) by 2 or more points over the 2-year follow-up period.
Overall, 34 (29%) of the patients had syndesmophytes at baseline, 90 (76%) had radiographic sacroiliitis fulfilling the modified New York criteria for the classification of AS, and 19 (16%) had low BMD.
At 2 years, new syndesmophytes had developed in 22 (21%) of the patients. New syndesmophyte formation occurred in 15% of patients without low BMD and in 37% of patients with low BMD (P = .047).
In the multivariable analysis, current smoking (odds ratio, 3.0; 95% confidence interval, 1.1-7.7), the presence of syndesmophytes (OR, 4.6; 95% CI, 1.8-11.9); and low BMD at baseline (OR, 3.6; 95% CI, 1.2-11.2) were independently associated with significant spinal progression, the investigators reported.
The presence of baseline syndesmophytes and low BMD at any site (OR, 5.5; 95% CI, 2.0-15.2; and OR, 3.6; 95% CI, 1.1-11.8, respectively) was identified by the investigators as significant predictors of new syndesmophytes.
“The presence of a syndesmophyte at baseline and low BMD were predictors of the formation of new syndesmophytes and significant mSASSS progression. … This study is the first to demonstrate that low BMD predicts radiographic progression in axSpA,” they concluded.
The investigators noted that a potential driving mechanism for the ankylosing process was bone loss resulting from chronic inflammation and the associated changes in bone microarchitecture.
“The inflammatory process induces bone loss, which affects the microarchitecture in the trabecular bone, thereby leading to instability. Reduced bone strength triggers a stabilizing anabolic effort that results in bone formation,” they wrote.
“Our results suggest that successful anti-inflammatory treatment reduces inflammation and allows the bone metabolism to normalize, thereby taking away the compensatory anabolic response that leads to new bone formation in the cortical bone of the spine,” they said.
They noted that their study was limited by its small sample and their findings needed confirmation in larger cohorts of axSpA patients.
SOURCE: Arthritis Res Ther. 2018 Oct 16. doi: 10.1186/s13075-018-1731-8.
FROM ARTHRITIS RESEARCH & THERAPY
Key clinical point: Low bone mineral density and existing spinal syndesmophytes are risk factors for new syndesmophytes and radiographic progression in people with axial spondyloarthritis.
Major finding: The presence of syndesmophytes at baseline and low BMD were predictors of new syndesmophytes over the following 2 years (OR, 5.5; 95% CI, 2.0-15.2 and OR, 3.6; 95% CI, 1.1-11.8, respectively).
Study details: A longitudinal observational study of 119 consecutive patients with axial SpA aged under 50 years who fulfilled the imaging arm of the Assessment of SpondyloArthritis International Society axSpA criteria.
Disclosures: No specific funding was received from any public, commercial or not-for-profit bodies. No authors declared any conflicts of interest.
Source: Arthritis Res Ther. 2018 Oct 16. doi: 10.1186/s13075-018-1731-8.
No evidence of subclinical axial involvement seen in skin psoriasis
A study of individuals with longstanding skin psoriasis but no clinical arthritis or spondylitis has found no evidence of subclinical involvement of the sacroiliac joint or spine.
The prevalence of sacroiliac lesions on blinded MRI assessment was similar in 20 patients who had skin psoriasis for a median of 23 years and in 22 healthy controls, and no sacroiliac ankylosis was seen in either group. Similarly, there was no significant difference between the two groups in spinal lesions on MRI, nor in any of the five levels of lesion frequency, Vlad A. Bratu, MD, of the department of radiology at University Hospital Basel (Switzerland) and his coauthors reported in Arthritis Care & Research.
On blinded MRI assessment, five (25%) patients with skin psoriasis and two (9.1%) controls were classified as having inflammation of the sacroiliac joint. Three of these patients in the psoriasis group and one in the control group were older than 50, and the three with psoriasis had had the condition for 26-35 years.
Dr. Bratu and his colleagues said that subclinical peripheral joint inflammation on MRI had previously been a common finding in patients who had skin psoriasis but no clinical signs of psoriatic arthritis. But given the limited evidence of concomitant subclinical axial or spinal inflammation in their study, the authors argued there was no support for routine screening for potential subclinical axial inflammation in patients with longstanding skin psoriasis.
They noted that bone marrow edema lesions in at least two sacroiliac joint quadrants were seen in 35% of patients with psoriasis and 23% of healthy controls, a finding that reflected those seen in other studies in healthy individuals.
“If a specificity threshold for a given MRI lesion of at least 0.9 is applied for axial MRI to discriminate between axial SpA [spondyloarthritis] and background variation in healthy controls or in differential diagnostic conditions, no more than 10% of healthy controls in our study should meet this criterion by an individual level data analysis,” they wrote.
The authors also pointed out the impact of age on lesion frequency, which was more evident in spinal lesions.
“This observation supports the hypothesis that some spinal alterations in higher age may reflect degenerative rather than inflammatory changes,” they wrote. “However, there is a gap in knowledge with virtually no evidence about presence and pattern of degenerative versus inflammatory spinal lesions in subjects beyond 50 years of age.”
The study was supported by the Gottfried and Julia Bangerter-Rhyner Foundation. No conflicts of interest were declared.
SOURCE: Bratu V et al. Arthritis Care Res. 2018 Sep 22. doi: 10.1002/acr.23767.
A study of individuals with longstanding skin psoriasis but no clinical arthritis or spondylitis has found no evidence of subclinical involvement of the sacroiliac joint or spine.
The prevalence of sacroiliac lesions on blinded MRI assessment was similar in 20 patients who had skin psoriasis for a median of 23 years and in 22 healthy controls, and no sacroiliac ankylosis was seen in either group. Similarly, there was no significant difference between the two groups in spinal lesions on MRI, nor in any of the five levels of lesion frequency, Vlad A. Bratu, MD, of the department of radiology at University Hospital Basel (Switzerland) and his coauthors reported in Arthritis Care & Research.
On blinded MRI assessment, five (25%) patients with skin psoriasis and two (9.1%) controls were classified as having inflammation of the sacroiliac joint. Three of these patients in the psoriasis group and one in the control group were older than 50, and the three with psoriasis had had the condition for 26-35 years.
Dr. Bratu and his colleagues said that subclinical peripheral joint inflammation on MRI had previously been a common finding in patients who had skin psoriasis but no clinical signs of psoriatic arthritis. But given the limited evidence of concomitant subclinical axial or spinal inflammation in their study, the authors argued there was no support for routine screening for potential subclinical axial inflammation in patients with longstanding skin psoriasis.
They noted that bone marrow edema lesions in at least two sacroiliac joint quadrants were seen in 35% of patients with psoriasis and 23% of healthy controls, a finding that reflected those seen in other studies in healthy individuals.
“If a specificity threshold for a given MRI lesion of at least 0.9 is applied for axial MRI to discriminate between axial SpA [spondyloarthritis] and background variation in healthy controls or in differential diagnostic conditions, no more than 10% of healthy controls in our study should meet this criterion by an individual level data analysis,” they wrote.
The authors also pointed out the impact of age on lesion frequency, which was more evident in spinal lesions.
“This observation supports the hypothesis that some spinal alterations in higher age may reflect degenerative rather than inflammatory changes,” they wrote. “However, there is a gap in knowledge with virtually no evidence about presence and pattern of degenerative versus inflammatory spinal lesions in subjects beyond 50 years of age.”
The study was supported by the Gottfried and Julia Bangerter-Rhyner Foundation. No conflicts of interest were declared.
SOURCE: Bratu V et al. Arthritis Care Res. 2018 Sep 22. doi: 10.1002/acr.23767.
A study of individuals with longstanding skin psoriasis but no clinical arthritis or spondylitis has found no evidence of subclinical involvement of the sacroiliac joint or spine.
The prevalence of sacroiliac lesions on blinded MRI assessment was similar in 20 patients who had skin psoriasis for a median of 23 years and in 22 healthy controls, and no sacroiliac ankylosis was seen in either group. Similarly, there was no significant difference between the two groups in spinal lesions on MRI, nor in any of the five levels of lesion frequency, Vlad A. Bratu, MD, of the department of radiology at University Hospital Basel (Switzerland) and his coauthors reported in Arthritis Care & Research.
On blinded MRI assessment, five (25%) patients with skin psoriasis and two (9.1%) controls were classified as having inflammation of the sacroiliac joint. Three of these patients in the psoriasis group and one in the control group were older than 50, and the three with psoriasis had had the condition for 26-35 years.
Dr. Bratu and his colleagues said that subclinical peripheral joint inflammation on MRI had previously been a common finding in patients who had skin psoriasis but no clinical signs of psoriatic arthritis. But given the limited evidence of concomitant subclinical axial or spinal inflammation in their study, the authors argued there was no support for routine screening for potential subclinical axial inflammation in patients with longstanding skin psoriasis.
They noted that bone marrow edema lesions in at least two sacroiliac joint quadrants were seen in 35% of patients with psoriasis and 23% of healthy controls, a finding that reflected those seen in other studies in healthy individuals.
“If a specificity threshold for a given MRI lesion of at least 0.9 is applied for axial MRI to discriminate between axial SpA [spondyloarthritis] and background variation in healthy controls or in differential diagnostic conditions, no more than 10% of healthy controls in our study should meet this criterion by an individual level data analysis,” they wrote.
The authors also pointed out the impact of age on lesion frequency, which was more evident in spinal lesions.
“This observation supports the hypothesis that some spinal alterations in higher age may reflect degenerative rather than inflammatory changes,” they wrote. “However, there is a gap in knowledge with virtually no evidence about presence and pattern of degenerative versus inflammatory spinal lesions in subjects beyond 50 years of age.”
The study was supported by the Gottfried and Julia Bangerter-Rhyner Foundation. No conflicts of interest were declared.
SOURCE: Bratu V et al. Arthritis Care Res. 2018 Sep 22. doi: 10.1002/acr.23767.
FROM ARTHRITIS CARE & RESEARCH
Key clinical point:
Major finding: The prevalence of sacroiliac bone marrow lesions was similar between patients with skin psoriasis and healthy controls.
Study details: Case-control study in 20 patients with skin psoriasis and 22 healthy controls.
Disclosures: The study was supported by the Gottfried and Julia Bangerter-Rhyner Foundation. No conflicts of interest were declared.
Source: Bratu V et al. Arthritis Care Res. 2018 Sep 22. doi: 10.1002/acr.23767.
Arthritis prevalent in older adults with any degree of depression
Arthritis is highly prevalent in older adults with any degree of depression, results of a recent study suggest.
Doctor-diagnosed arthritis was reported by more than 50% of older adults with mild depression, according to results of the study, which was based on data from the National Health and Nutrition Examination Survey (NHANES).
The prevalence of arthritis exceeded 60% in participants with moderate depression, and approached 70% for those with severe depression, according to the study, published in the International Journal of Geriatric Psychiatry.
Based on those findings, arthritis and depression need to be viewed as frequently co-occurring physical and psychosocial issues, reported Jessica M. Brooks, PhD, of the department of psychiatry at Dartmouth College, Lebanon, N.H., and her coauthors.
“It may be critical for mental health care providers to provide regular arthritis-related pain assessments and evidence‐based treatments for co‐occurring arthritis in older adults with or at risk for depression,” Dr. Brooks and her colleagues said in their report.
Their analysis was based on 2,483 women and 2,309 men aged 50 years and older (mean age, 64.5 years) who had participated in the NHANES survey between 2011 and 2014. Out of that sample, 2,094 participants (43.7%) said they had been told by a doctor that they had arthritis, the researchers said.
The rate of arthritis was 38.2% for participants with no depressive symptoms as indicated by a 0-4 score on the 9-item Patient Health Questionnaire (PHQ-9). By comparison, rates of arthritis were 55.0%, 62.9%, and 67.8% for those with mild, moderate, or severe depression by PHQ-9.
Individuals with arthritis had a significantly higher mean PHQ-9 score, at 4.6, compared with 2.6 for those without arthritis (P less than .001), the investigators said.
that controlled for age, gender, comorbid conditions, and other factors such as smoking history.
Establishing prevalence rates of arthritis in older adults with depression is an “important step” toward informing mental health professionals on the need to identify and treat arthritis-related pain, Dr. Brooks and her coauthors said.
“Addressing arthritis in mental health treatment and behavioral medicine may also help to reduce the overlapping cognitive, behavioral, and somatic symptoms in older adults with depressive symptoms and arthritis, which may be difficult for providers to disentangle through brief screening procedures and treat through conventional depression care,” they wrote.
The investigators cited several limitations. For example, the cross-sectional nature of the study makes it difficult to draw conclusions about causality. In addition, Dr. Brooks and her colleagues did not distinguish between different types of arthritis.
The researchers declared no conflicts of interest. The study was supported by several U.S. institutes, including the National Institute of Mental Health, and by numerous entities related to Dartmouth, including the Dartmouth Health Promotion and Disease Prevention Research Center. The Howard and Phyllis Schwartz Philanthropic Fund also provided funding.
SOURCE: Brooks JM et al. Int J Geriatr Psychiatry. 2018 Sep 19. doi: 10.1022/gps.4971.
Arthritis is highly prevalent in older adults with any degree of depression, results of a recent study suggest.
Doctor-diagnosed arthritis was reported by more than 50% of older adults with mild depression, according to results of the study, which was based on data from the National Health and Nutrition Examination Survey (NHANES).
The prevalence of arthritis exceeded 60% in participants with moderate depression, and approached 70% for those with severe depression, according to the study, published in the International Journal of Geriatric Psychiatry.
Based on those findings, arthritis and depression need to be viewed as frequently co-occurring physical and psychosocial issues, reported Jessica M. Brooks, PhD, of the department of psychiatry at Dartmouth College, Lebanon, N.H., and her coauthors.
“It may be critical for mental health care providers to provide regular arthritis-related pain assessments and evidence‐based treatments for co‐occurring arthritis in older adults with or at risk for depression,” Dr. Brooks and her colleagues said in their report.
Their analysis was based on 2,483 women and 2,309 men aged 50 years and older (mean age, 64.5 years) who had participated in the NHANES survey between 2011 and 2014. Out of that sample, 2,094 participants (43.7%) said they had been told by a doctor that they had arthritis, the researchers said.
The rate of arthritis was 38.2% for participants with no depressive symptoms as indicated by a 0-4 score on the 9-item Patient Health Questionnaire (PHQ-9). By comparison, rates of arthritis were 55.0%, 62.9%, and 67.8% for those with mild, moderate, or severe depression by PHQ-9.
Individuals with arthritis had a significantly higher mean PHQ-9 score, at 4.6, compared with 2.6 for those without arthritis (P less than .001), the investigators said.
that controlled for age, gender, comorbid conditions, and other factors such as smoking history.
Establishing prevalence rates of arthritis in older adults with depression is an “important step” toward informing mental health professionals on the need to identify and treat arthritis-related pain, Dr. Brooks and her coauthors said.
“Addressing arthritis in mental health treatment and behavioral medicine may also help to reduce the overlapping cognitive, behavioral, and somatic symptoms in older adults with depressive symptoms and arthritis, which may be difficult for providers to disentangle through brief screening procedures and treat through conventional depression care,” they wrote.
The investigators cited several limitations. For example, the cross-sectional nature of the study makes it difficult to draw conclusions about causality. In addition, Dr. Brooks and her colleagues did not distinguish between different types of arthritis.
The researchers declared no conflicts of interest. The study was supported by several U.S. institutes, including the National Institute of Mental Health, and by numerous entities related to Dartmouth, including the Dartmouth Health Promotion and Disease Prevention Research Center. The Howard and Phyllis Schwartz Philanthropic Fund also provided funding.
SOURCE: Brooks JM et al. Int J Geriatr Psychiatry. 2018 Sep 19. doi: 10.1022/gps.4971.
Arthritis is highly prevalent in older adults with any degree of depression, results of a recent study suggest.
Doctor-diagnosed arthritis was reported by more than 50% of older adults with mild depression, according to results of the study, which was based on data from the National Health and Nutrition Examination Survey (NHANES).
The prevalence of arthritis exceeded 60% in participants with moderate depression, and approached 70% for those with severe depression, according to the study, published in the International Journal of Geriatric Psychiatry.
Based on those findings, arthritis and depression need to be viewed as frequently co-occurring physical and psychosocial issues, reported Jessica M. Brooks, PhD, of the department of psychiatry at Dartmouth College, Lebanon, N.H., and her coauthors.
“It may be critical for mental health care providers to provide regular arthritis-related pain assessments and evidence‐based treatments for co‐occurring arthritis in older adults with or at risk for depression,” Dr. Brooks and her colleagues said in their report.
Their analysis was based on 2,483 women and 2,309 men aged 50 years and older (mean age, 64.5 years) who had participated in the NHANES survey between 2011 and 2014. Out of that sample, 2,094 participants (43.7%) said they had been told by a doctor that they had arthritis, the researchers said.
The rate of arthritis was 38.2% for participants with no depressive symptoms as indicated by a 0-4 score on the 9-item Patient Health Questionnaire (PHQ-9). By comparison, rates of arthritis were 55.0%, 62.9%, and 67.8% for those with mild, moderate, or severe depression by PHQ-9.
Individuals with arthritis had a significantly higher mean PHQ-9 score, at 4.6, compared with 2.6 for those without arthritis (P less than .001), the investigators said.
that controlled for age, gender, comorbid conditions, and other factors such as smoking history.
Establishing prevalence rates of arthritis in older adults with depression is an “important step” toward informing mental health professionals on the need to identify and treat arthritis-related pain, Dr. Brooks and her coauthors said.
“Addressing arthritis in mental health treatment and behavioral medicine may also help to reduce the overlapping cognitive, behavioral, and somatic symptoms in older adults with depressive symptoms and arthritis, which may be difficult for providers to disentangle through brief screening procedures and treat through conventional depression care,” they wrote.
The investigators cited several limitations. For example, the cross-sectional nature of the study makes it difficult to draw conclusions about causality. In addition, Dr. Brooks and her colleagues did not distinguish between different types of arthritis.
The researchers declared no conflicts of interest. The study was supported by several U.S. institutes, including the National Institute of Mental Health, and by numerous entities related to Dartmouth, including the Dartmouth Health Promotion and Disease Prevention Research Center. The Howard and Phyllis Schwartz Philanthropic Fund also provided funding.
SOURCE: Brooks JM et al. Int J Geriatr Psychiatry. 2018 Sep 19. doi: 10.1022/gps.4971.
FROM THE INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY
Key clinical point: “It may be critical for mental health care providers to provide regular arthritis-related pain assessments” for older adults with or at risk for depression.
Major finding: Rates of arthritis were 55.0%, 62.9%, and 67.8% for those with mild, moderate, or severe depression, respectively, according to the 9-item Patient Health Questionnaire-9 scores.
Study details: Findings on 2,483 women and 2,309 men aged 50 years and older who participated in the National Health and Nutrition Examination Survey.
Disclosures: Dr. Brooks and her coauthors declared no conflicts of interest. The study was supported by several U.S. institutes, including the National Institute of Mental Health, and by numerous entities related to Dartmouth, including the Dartmouth Health Promotion and Disease Prevention Research Center. The Howard and Phyllis Schwartz Philanthropic Fund also provided funding.
Source: Brooks JM et al. Int J Geriatr Psychiatry. 2018 Sep 19. doi: 10.1002/gps.4971.
Repeat MRI not useful in suspected axial spondyloarthritis
Patients with chronic back pain suspected of having axial spondyloarthritis (axSpA) should not undergo follow-up MRI of the sacroiliac joint (MRI-SI) within a year if they had a negative baseline MRI-SI, according to investigators.
It is very unlikely that a follow-up MRI-SI will yield new results, reported Pauline A. Bakker, MD, of the department of rheumatology at Leiden University Medical Centre, the Netherlands, and her colleagues.
Since gender and HLA-B27 status were closely associated with MRI-SI positivity, these factors should be considered when deciding to repeat an MRI-SI.
“Over the last decade, MRI rapidly gained ground and proved to be an important imaging technique in the diagnostic process of [nonradiographic] axial spondyloarthritis,” the investigators wrote in Arthritis and Rheumatology. “It has been shown that MRI can detect the early inflammatory stages of sacroiliitis months to years before structural damage can be detected on a conventional radiograph.”
Although MRI represents a diagnostic leap forward, questions of clinical application remain. “For example… if an MRI is completely normal and there is still a clinical suspicion of axSpA, should the MRI be repeated? And if so, after what period of follow-up? Or does this not contribute to the diagnostic process?”
To answer these questions, the investigators observed the “evolution of MRI lesions over a 3-month and 1-year time frame” in patients with early chronic back pain and suspected axSpA.
The prospective study involved 188 patients from the Spondyloarthritis Caught Early (SPACE) cohort. The authors commented that this is “an ideal cohort… since it includes a population of patients with back pain of short duration referred to rheumatologists with a suspicion of SpA [but without the mandatory presence of a single or multiple SpA features].”
Enrolled patients had chronic back pain lasting between 3 months and 2 years, with onset beginning between 16 and 45 years of age. Each underwent physical examination (including evaluation of other SpA features), MRI and radiographs of the sacroiliac joints, and HLA-B27 testing. If patients fulfilled axSpA criteria or had possible axSpA (at least one SpA feature), then they proceeded into the follow-up phase of the study, which included repeat MRI-SI at 3 months and 1 year.
Among enrolled patients, slightly more than one-third were male, almost half were HLA-B27 positive, and about three-quarters had Assessment of Spondyloarthritis International Society–defined inflammatory back pain. Mean age was 31 years; 31 (16.5%) patients were MRI-SI positive.
Of patients that were MRI-SI positive at baseline, 11.1% and 37.9% had a negative MRI-SI at 3 months and 1 year, respectively. The authors noted that this change “was partly induced by the start of anti-TNF [tumor necrosis factor] therapy.” In patients who were MRI-SI negative at baseline, 4.3% and 7.2% were positive at 3 months and 1 year, respectively.
“A very small percentage of patients become positive… which indicates that the usefulness of repeating an MRI-SI in the diagnostic process after 3 months or 1 year is very limited,” the authors wrote.
Gender and HLA-B27 status were independently associated with a positive MRI-SI at any point in time. About 43% of HLA-B27-positive men had a positive MRI-SI, compared with just 7% of HLA-B27-negative women. The investigators advised that these associations be considered when deciding upon repeat MRI-SI.
“If a clinical suspicion [of axSpA] remains [for example, a patient develops other SpA features] it might be worthwhile to consider redoing an MRI in HLA-B27 positive patients,” the investigators wrote. “Likewise, there is a statistically significant difference between male and female patients with a negative baseline MRI, namely that in male patients more often a positive MRI at follow-up is seen [difference: 12% in men, 3% in women].”
The researchers reported having no conflicts of interest.
SOURCE: Bakker PA et al. Arthritis Rheumatol. 2018 Sep 11. doi: 10.1002/art.40718.
Patients with chronic back pain suspected of having axial spondyloarthritis (axSpA) should not undergo follow-up MRI of the sacroiliac joint (MRI-SI) within a year if they had a negative baseline MRI-SI, according to investigators.
It is very unlikely that a follow-up MRI-SI will yield new results, reported Pauline A. Bakker, MD, of the department of rheumatology at Leiden University Medical Centre, the Netherlands, and her colleagues.
Since gender and HLA-B27 status were closely associated with MRI-SI positivity, these factors should be considered when deciding to repeat an MRI-SI.
“Over the last decade, MRI rapidly gained ground and proved to be an important imaging technique in the diagnostic process of [nonradiographic] axial spondyloarthritis,” the investigators wrote in Arthritis and Rheumatology. “It has been shown that MRI can detect the early inflammatory stages of sacroiliitis months to years before structural damage can be detected on a conventional radiograph.”
Although MRI represents a diagnostic leap forward, questions of clinical application remain. “For example… if an MRI is completely normal and there is still a clinical suspicion of axSpA, should the MRI be repeated? And if so, after what period of follow-up? Or does this not contribute to the diagnostic process?”
To answer these questions, the investigators observed the “evolution of MRI lesions over a 3-month and 1-year time frame” in patients with early chronic back pain and suspected axSpA.
The prospective study involved 188 patients from the Spondyloarthritis Caught Early (SPACE) cohort. The authors commented that this is “an ideal cohort… since it includes a population of patients with back pain of short duration referred to rheumatologists with a suspicion of SpA [but without the mandatory presence of a single or multiple SpA features].”
Enrolled patients had chronic back pain lasting between 3 months and 2 years, with onset beginning between 16 and 45 years of age. Each underwent physical examination (including evaluation of other SpA features), MRI and radiographs of the sacroiliac joints, and HLA-B27 testing. If patients fulfilled axSpA criteria or had possible axSpA (at least one SpA feature), then they proceeded into the follow-up phase of the study, which included repeat MRI-SI at 3 months and 1 year.
Among enrolled patients, slightly more than one-third were male, almost half were HLA-B27 positive, and about three-quarters had Assessment of Spondyloarthritis International Society–defined inflammatory back pain. Mean age was 31 years; 31 (16.5%) patients were MRI-SI positive.
Of patients that were MRI-SI positive at baseline, 11.1% and 37.9% had a negative MRI-SI at 3 months and 1 year, respectively. The authors noted that this change “was partly induced by the start of anti-TNF [tumor necrosis factor] therapy.” In patients who were MRI-SI negative at baseline, 4.3% and 7.2% were positive at 3 months and 1 year, respectively.
“A very small percentage of patients become positive… which indicates that the usefulness of repeating an MRI-SI in the diagnostic process after 3 months or 1 year is very limited,” the authors wrote.
Gender and HLA-B27 status were independently associated with a positive MRI-SI at any point in time. About 43% of HLA-B27-positive men had a positive MRI-SI, compared with just 7% of HLA-B27-negative women. The investigators advised that these associations be considered when deciding upon repeat MRI-SI.
“If a clinical suspicion [of axSpA] remains [for example, a patient develops other SpA features] it might be worthwhile to consider redoing an MRI in HLA-B27 positive patients,” the investigators wrote. “Likewise, there is a statistically significant difference between male and female patients with a negative baseline MRI, namely that in male patients more often a positive MRI at follow-up is seen [difference: 12% in men, 3% in women].”
The researchers reported having no conflicts of interest.
SOURCE: Bakker PA et al. Arthritis Rheumatol. 2018 Sep 11. doi: 10.1002/art.40718.
Patients with chronic back pain suspected of having axial spondyloarthritis (axSpA) should not undergo follow-up MRI of the sacroiliac joint (MRI-SI) within a year if they had a negative baseline MRI-SI, according to investigators.
It is very unlikely that a follow-up MRI-SI will yield new results, reported Pauline A. Bakker, MD, of the department of rheumatology at Leiden University Medical Centre, the Netherlands, and her colleagues.
Since gender and HLA-B27 status were closely associated with MRI-SI positivity, these factors should be considered when deciding to repeat an MRI-SI.
“Over the last decade, MRI rapidly gained ground and proved to be an important imaging technique in the diagnostic process of [nonradiographic] axial spondyloarthritis,” the investigators wrote in Arthritis and Rheumatology. “It has been shown that MRI can detect the early inflammatory stages of sacroiliitis months to years before structural damage can be detected on a conventional radiograph.”
Although MRI represents a diagnostic leap forward, questions of clinical application remain. “For example… if an MRI is completely normal and there is still a clinical suspicion of axSpA, should the MRI be repeated? And if so, after what period of follow-up? Or does this not contribute to the diagnostic process?”
To answer these questions, the investigators observed the “evolution of MRI lesions over a 3-month and 1-year time frame” in patients with early chronic back pain and suspected axSpA.
The prospective study involved 188 patients from the Spondyloarthritis Caught Early (SPACE) cohort. The authors commented that this is “an ideal cohort… since it includes a population of patients with back pain of short duration referred to rheumatologists with a suspicion of SpA [but without the mandatory presence of a single or multiple SpA features].”
Enrolled patients had chronic back pain lasting between 3 months and 2 years, with onset beginning between 16 and 45 years of age. Each underwent physical examination (including evaluation of other SpA features), MRI and radiographs of the sacroiliac joints, and HLA-B27 testing. If patients fulfilled axSpA criteria or had possible axSpA (at least one SpA feature), then they proceeded into the follow-up phase of the study, which included repeat MRI-SI at 3 months and 1 year.
Among enrolled patients, slightly more than one-third were male, almost half were HLA-B27 positive, and about three-quarters had Assessment of Spondyloarthritis International Society–defined inflammatory back pain. Mean age was 31 years; 31 (16.5%) patients were MRI-SI positive.
Of patients that were MRI-SI positive at baseline, 11.1% and 37.9% had a negative MRI-SI at 3 months and 1 year, respectively. The authors noted that this change “was partly induced by the start of anti-TNF [tumor necrosis factor] therapy.” In patients who were MRI-SI negative at baseline, 4.3% and 7.2% were positive at 3 months and 1 year, respectively.
“A very small percentage of patients become positive… which indicates that the usefulness of repeating an MRI-SI in the diagnostic process after 3 months or 1 year is very limited,” the authors wrote.
Gender and HLA-B27 status were independently associated with a positive MRI-SI at any point in time. About 43% of HLA-B27-positive men had a positive MRI-SI, compared with just 7% of HLA-B27-negative women. The investigators advised that these associations be considered when deciding upon repeat MRI-SI.
“If a clinical suspicion [of axSpA] remains [for example, a patient develops other SpA features] it might be worthwhile to consider redoing an MRI in HLA-B27 positive patients,” the investigators wrote. “Likewise, there is a statistically significant difference between male and female patients with a negative baseline MRI, namely that in male patients more often a positive MRI at follow-up is seen [difference: 12% in men, 3% in women].”
The researchers reported having no conflicts of interest.
SOURCE: Bakker PA et al. Arthritis Rheumatol. 2018 Sep 11. doi: 10.1002/art.40718.
FROM ARTHRITIS & RHEUMATOLOGY
Key clinical point:
Major finding: In patients who had a negative baseline MRI of the sacroiliac joints, the maximum likelihood of a follow-up MRI being positive was 7%.
Study details: A prospective study involving 188 patients (from the Spondyloarthritis Caught Early cohort) with early chronic back pain suspected of axial spondyloarthritis.
Disclosures: The researchers reported having no financial disclosures.
Source: Bakker PA et al. Arthritis Rheumatol. 2018 Sep 11. doi: 10.1002/art.40718.
Infliximab biosimilar only moderately less expensive in Medicare Part D
The infliximab-dyyb biosimilar was only moderately less expensive than the originator infliximab product Remicade in the United States in 2017 under Medicare Part D, an analysis shows.
Infliximab-dyyb (Inflectra) cost 18% less than infliximab, with an annual cost exceeding $14,000 in an analysis published online Sept. 4 in JAMA by Jinoos Yazdany, MD, of the division of rheumatology at the University of California, San Francisco, and her coauthors.
However, “without biosimilar gap discounts in 2017, beneficiaries would have paid more than $5,100 for infliximab-dyyb, or nearly $1,700 more in projected out-of-pocket costs than infliximab,” Dr. Yazdany and her coauthors wrote.
Biologics represent only 2% of U.S. prescriptions but made up 38% of drug spending in 2015 and accounted for 70% of growth in drug spending from 2010 to 2015, according to Dr. Yazdany and her colleagues.
Biologics for rheumatoid arthritis (RA) cost more than $14,000 per year, and in 2015, 3 were among the top 15 drugs in terms of Medicare expenditures, they added.
While biosimilars are supposed to increase competition and lower prices, it’s an open question whether they actually reduce out-of-pocket expenditures for the 43 million individuals with drug benefits under Medicare Part D.
That uncertainty is due in part to the complex cost-sharing design of Part D, which includes an initial deductible, a coverage phase, a coverage gap, and catastrophic coverage.
In 2017, the plan included an initial $400 deductible, followed by the coverage phase, in which the patient paid 25% of drug costs. In the coverage gap, which started at $3,700 in total drug costs, the patient’s share of drug costs increased to 40% for biologics, and 51% for biosimilars. In the catastrophic coverage phase, triggered when out-of-pocket costs exceeded $4,950, the patient was responsible for 5% of drug costs.
“Currently, beneficiaries receive a 50% manufacturer discount during the gap for brand-name drugs and biologics, but not for biosimilars,” Dr. Yazdany and her coauthors said in the report.
To evaluate cost-sharing for infliximab-dyyb, which in 2016 became the first available RA biosimilar, the authors analyzed data for all Part D plans in the June 2017 Medicare Prescription Drug Plan Formulary, Pharmacy Network, and Pricing Information Files.
Out of 2,547 plans, only 10% covered the biosimilar, while 96% covered infliximab, the authors found.
The mean total cost of infliximab-dyyb was “modestly lower,” they reported. Eight-week prescription costs were $2,185 for infliximab-dyyb versus $2,667 for infliximab, while annual costs were $14,202 for the biosimilar and $17,335 for infliximab.
However, all plans required coinsurance cost-sharing for the biosimilar, they said. The mean coinsurance rate was 26.6% of the total drug cost for the biosimilar and 28.4% for infliximab.
For beneficiaries, projected annual out-of-pocket costs without the gap discount were $5,118 for infliximab-dyyb and $3,432 for infliximab, the researchers said.
Biosimilar gap discounts are set to start in 2019, according to the authors. However, they said those discounts may not substantially reduce out-of-pocket costs for Part D beneficiaries because of the high price of infliximab-dyyb and a coinsurance cost-sharing rate similar to that of infliximab.
“Further policies are needed to address affordability and access to specialty drugs,” Dr. Yazdany and her coauthors concluded.
The study was funded in part by grants from the Agency for Healthcare Research and Quality, the Robert L. Kroc Endowed Chair in Rheumatic and Connective Tissue Diseases, and other sources. Dr. Yazdany reported receiving an independent investigator award from Pfizer. Her coauthors reported no conflict of interest disclosures.
The infliximab-dyyb biosimilar was only moderately less expensive than the originator infliximab product Remicade in the United States in 2017 under Medicare Part D, an analysis shows.
Infliximab-dyyb (Inflectra) cost 18% less than infliximab, with an annual cost exceeding $14,000 in an analysis published online Sept. 4 in JAMA by Jinoos Yazdany, MD, of the division of rheumatology at the University of California, San Francisco, and her coauthors.
However, “without biosimilar gap discounts in 2017, beneficiaries would have paid more than $5,100 for infliximab-dyyb, or nearly $1,700 more in projected out-of-pocket costs than infliximab,” Dr. Yazdany and her coauthors wrote.
Biologics represent only 2% of U.S. prescriptions but made up 38% of drug spending in 2015 and accounted for 70% of growth in drug spending from 2010 to 2015, according to Dr. Yazdany and her colleagues.
Biologics for rheumatoid arthritis (RA) cost more than $14,000 per year, and in 2015, 3 were among the top 15 drugs in terms of Medicare expenditures, they added.
While biosimilars are supposed to increase competition and lower prices, it’s an open question whether they actually reduce out-of-pocket expenditures for the 43 million individuals with drug benefits under Medicare Part D.
That uncertainty is due in part to the complex cost-sharing design of Part D, which includes an initial deductible, a coverage phase, a coverage gap, and catastrophic coverage.
In 2017, the plan included an initial $400 deductible, followed by the coverage phase, in which the patient paid 25% of drug costs. In the coverage gap, which started at $3,700 in total drug costs, the patient’s share of drug costs increased to 40% for biologics, and 51% for biosimilars. In the catastrophic coverage phase, triggered when out-of-pocket costs exceeded $4,950, the patient was responsible for 5% of drug costs.
“Currently, beneficiaries receive a 50% manufacturer discount during the gap for brand-name drugs and biologics, but not for biosimilars,” Dr. Yazdany and her coauthors said in the report.
To evaluate cost-sharing for infliximab-dyyb, which in 2016 became the first available RA biosimilar, the authors analyzed data for all Part D plans in the June 2017 Medicare Prescription Drug Plan Formulary, Pharmacy Network, and Pricing Information Files.
Out of 2,547 plans, only 10% covered the biosimilar, while 96% covered infliximab, the authors found.
The mean total cost of infliximab-dyyb was “modestly lower,” they reported. Eight-week prescription costs were $2,185 for infliximab-dyyb versus $2,667 for infliximab, while annual costs were $14,202 for the biosimilar and $17,335 for infliximab.
However, all plans required coinsurance cost-sharing for the biosimilar, they said. The mean coinsurance rate was 26.6% of the total drug cost for the biosimilar and 28.4% for infliximab.
For beneficiaries, projected annual out-of-pocket costs without the gap discount were $5,118 for infliximab-dyyb and $3,432 for infliximab, the researchers said.
Biosimilar gap discounts are set to start in 2019, according to the authors. However, they said those discounts may not substantially reduce out-of-pocket costs for Part D beneficiaries because of the high price of infliximab-dyyb and a coinsurance cost-sharing rate similar to that of infliximab.
“Further policies are needed to address affordability and access to specialty drugs,” Dr. Yazdany and her coauthors concluded.
The study was funded in part by grants from the Agency for Healthcare Research and Quality, the Robert L. Kroc Endowed Chair in Rheumatic and Connective Tissue Diseases, and other sources. Dr. Yazdany reported receiving an independent investigator award from Pfizer. Her coauthors reported no conflict of interest disclosures.
The infliximab-dyyb biosimilar was only moderately less expensive than the originator infliximab product Remicade in the United States in 2017 under Medicare Part D, an analysis shows.
Infliximab-dyyb (Inflectra) cost 18% less than infliximab, with an annual cost exceeding $14,000 in an analysis published online Sept. 4 in JAMA by Jinoos Yazdany, MD, of the division of rheumatology at the University of California, San Francisco, and her coauthors.
However, “without biosimilar gap discounts in 2017, beneficiaries would have paid more than $5,100 for infliximab-dyyb, or nearly $1,700 more in projected out-of-pocket costs than infliximab,” Dr. Yazdany and her coauthors wrote.
Biologics represent only 2% of U.S. prescriptions but made up 38% of drug spending in 2015 and accounted for 70% of growth in drug spending from 2010 to 2015, according to Dr. Yazdany and her colleagues.
Biologics for rheumatoid arthritis (RA) cost more than $14,000 per year, and in 2015, 3 were among the top 15 drugs in terms of Medicare expenditures, they added.
While biosimilars are supposed to increase competition and lower prices, it’s an open question whether they actually reduce out-of-pocket expenditures for the 43 million individuals with drug benefits under Medicare Part D.
That uncertainty is due in part to the complex cost-sharing design of Part D, which includes an initial deductible, a coverage phase, a coverage gap, and catastrophic coverage.
In 2017, the plan included an initial $400 deductible, followed by the coverage phase, in which the patient paid 25% of drug costs. In the coverage gap, which started at $3,700 in total drug costs, the patient’s share of drug costs increased to 40% for biologics, and 51% for biosimilars. In the catastrophic coverage phase, triggered when out-of-pocket costs exceeded $4,950, the patient was responsible for 5% of drug costs.
“Currently, beneficiaries receive a 50% manufacturer discount during the gap for brand-name drugs and biologics, but not for biosimilars,” Dr. Yazdany and her coauthors said in the report.
To evaluate cost-sharing for infliximab-dyyb, which in 2016 became the first available RA biosimilar, the authors analyzed data for all Part D plans in the June 2017 Medicare Prescription Drug Plan Formulary, Pharmacy Network, and Pricing Information Files.
Out of 2,547 plans, only 10% covered the biosimilar, while 96% covered infliximab, the authors found.
The mean total cost of infliximab-dyyb was “modestly lower,” they reported. Eight-week prescription costs were $2,185 for infliximab-dyyb versus $2,667 for infliximab, while annual costs were $14,202 for the biosimilar and $17,335 for infliximab.
However, all plans required coinsurance cost-sharing for the biosimilar, they said. The mean coinsurance rate was 26.6% of the total drug cost for the biosimilar and 28.4% for infliximab.
For beneficiaries, projected annual out-of-pocket costs without the gap discount were $5,118 for infliximab-dyyb and $3,432 for infliximab, the researchers said.
Biosimilar gap discounts are set to start in 2019, according to the authors. However, they said those discounts may not substantially reduce out-of-pocket costs for Part D beneficiaries because of the high price of infliximab-dyyb and a coinsurance cost-sharing rate similar to that of infliximab.
“Further policies are needed to address affordability and access to specialty drugs,” Dr. Yazdany and her coauthors concluded.
The study was funded in part by grants from the Agency for Healthcare Research and Quality, the Robert L. Kroc Endowed Chair in Rheumatic and Connective Tissue Diseases, and other sources. Dr. Yazdany reported receiving an independent investigator award from Pfizer. Her coauthors reported no conflict of interest disclosures.
FROM JAMA
Key clinical point:
Major finding: Infliximab-dyyb was 18% less costly than infliximab, with an annual cost exceeding $14,000.
Study details: Analysis of data for 2,547 Part D plans in the June 2017 Medicare Prescription Drug Plan Formulary, Pharmacy Network, and Pricing Information Files.
Disclosures: The study was funded in part by grants from the Agency for Healthcare Research and Quality, the Robert L. Kroc Endowed Chair in Rheumatic and Connective Tissue Diseases, and other sources. One author reported receiving an independent investigator award from Pfizer.
Source: Yazdany J et al. JAMA. 2018;320(9):931-3.
Diclofenac’s cardiovascular risk confirmed in novel Nordic study
Those beginning diclofenac had a 50% increased 30-day risk for a composite outcome of major adverse cardiovascular events (MACE) compared with individuals who didn’t initiate an NSAID or acetaminophen (95% confidence interval for incidence rate ratio, 1.4-1.7).
The risk was still significantly elevated when the study’s first author, Morten Schmidt, MD, and his colleagues compared diclofenac initiation with beginning other NSAIDs or acetaminophen. Compared with those starting ibuprofen or acetaminophen, the MACE risk was elevated 20% in diclofenac initiators (95% CI, 1.1-1.3 for both). Initiating diclofenac was associated with 30% greater risk for MACE compared with initiating naproxen (95% CI, 1.1-1.5).
“Diclofenac is the most frequently used NSAID in low-, middle-, and high-income countries and is available over the counter in most countries; therefore, its cardiovascular risk profile is of major clinical and public health importance,” wrote Dr. Schmidt and his coauthors.
In all, the study included 1,370,832 individuals who initiated diclofenac, 3,878,454 ibuprofen initiators, 291,490 naproxen initiators, and 764,781 acetaminophen initiators. Those starting diclofenac were compared with those starting other medications, and with 1,303,209 individuals who sought health care but did not start one of the medications.
The researchers used the longstanding and complete Danish health registry system to their advantage in designing a cohort trial that was modeled to resemble a clinical trial. For each month, beginning in 1996 and continuing through 2016, Dr. Schmidt and his collaborators assembled propensity-matched cohorts of individuals to compare each study group. The study design achieved many of the aims of a clinical trial while working within the ethical constraints of studying medications now known to elevate cardiovascular risk.
For each 30-day period, the investigators were then able to track and compare cardiovascular outcomes for each group. Each month, data for a new cohort were collected, beginning a new “clinical trial.” Individuals could be included in more than one month’s worth of “trial” data as long as they continued to meet inclusion criteria.
The completeness of Danish health data meant that the researchers were confident in data about comorbidities, other prescription medications, and outcomes.
Dr. Schmidt and his colleagues performed subgroup and sensitivity analyses to look at the extent to which preexisting risks for cardiovascular disease mediated MACE risk on diclofenac initiation. They found that diclofenac initiators in the highest risk group had up to 40 excess cardiovascular events per year – about half of them fatal – that were attributable to starting the medication. Although that group had the highest absolute risk, however, “the relative risks were highest in those with the lowest baseline risk,” wrote the investigators.
In addition to looking at rates of MACE, secondary outcomes for the study included evaluating the association between medication use or non-use and each individual component of the composite primary outcome. These included first-time occurrences of the nonfatal endpoints of atrial fibrillation or flutter, ischemic (but not hemorrhagic) stroke, heart failure, and myocardial infarction. Cardiac death was death from any cardiac cause.
“Supporting use of a combined endpoint, event rates consistently increased for all individual outcomes” for diclofenac initiators compared with those who did not start an NSAID, wrote Dr. Schmidt and his colleagues.
Individuals were excluded if they had known cardiovascular, kidney, liver, or ulcer disease, and if they had malignancy or serious mental health diagnoses such as dementia or schizophrenia. Participants, aged a mean 48-56 years, had to be at least 18 years of age and could not have filled a prescription for an NSAID within the previous 12 months. Men made up 36.6%-46.3% of the cohorts.
Dr. Schmidt, of Aarhus (Denmark) University, and his collaborators said that in comparison with other NSAIDs, the short half-life of diclofenac means that a supratherapeutic plasma concentration of diclofenac soon after initiation achieves not just cyclooxygenase-2 (COX-2), but also COX-1 inhibition. However, after those high levels fall, patients taking diclofenac spend a substantial period of time with unopposed COX-2 inhibition, a state that is known to be prothrombotic, and also associated with blood pressure elevation, atherogenesis, and worsening of heart failure.
Diclofenac and ibuprofen had similar gastrointestinal bleeding risks, and both medications were associated with a higher risk of bleeding than were ibuprofen, acetaminophen, or no medication.
“Comparing diclofenac initiation with no NSAID initiation, the consistency between our results and those of previous meta-analyses of both trial and observational data provides strong evidence to guide clinical decision making,” said Dr. Schmidt and his coauthors.
“Considering its cardiovascular and gastrointestinal risks, however, there is little justification to initiate diclofenac treatment before other traditional NSAIDs,” noted the investigators. “It is time to acknowledge the potential health risk of diclofenac and to reduce its use.”
The study was funded by the Department of Clinical Epidemiology Research Foundation, University of Aarhus, and by the Program for Clinical Research Infrastructure, funded by the Lundbeck Foundation, Novo Nordisk Foundation, and the Danish Research Council. The authors reported that they had no relevant conflicts of interest.
SOURCE: Schmidt M et al. BMJ 2018;362:k3426
Those beginning diclofenac had a 50% increased 30-day risk for a composite outcome of major adverse cardiovascular events (MACE) compared with individuals who didn’t initiate an NSAID or acetaminophen (95% confidence interval for incidence rate ratio, 1.4-1.7).
The risk was still significantly elevated when the study’s first author, Morten Schmidt, MD, and his colleagues compared diclofenac initiation with beginning other NSAIDs or acetaminophen. Compared with those starting ibuprofen or acetaminophen, the MACE risk was elevated 20% in diclofenac initiators (95% CI, 1.1-1.3 for both). Initiating diclofenac was associated with 30% greater risk for MACE compared with initiating naproxen (95% CI, 1.1-1.5).
“Diclofenac is the most frequently used NSAID in low-, middle-, and high-income countries and is available over the counter in most countries; therefore, its cardiovascular risk profile is of major clinical and public health importance,” wrote Dr. Schmidt and his coauthors.
In all, the study included 1,370,832 individuals who initiated diclofenac, 3,878,454 ibuprofen initiators, 291,490 naproxen initiators, and 764,781 acetaminophen initiators. Those starting diclofenac were compared with those starting other medications, and with 1,303,209 individuals who sought health care but did not start one of the medications.
The researchers used the longstanding and complete Danish health registry system to their advantage in designing a cohort trial that was modeled to resemble a clinical trial. For each month, beginning in 1996 and continuing through 2016, Dr. Schmidt and his collaborators assembled propensity-matched cohorts of individuals to compare each study group. The study design achieved many of the aims of a clinical trial while working within the ethical constraints of studying medications now known to elevate cardiovascular risk.
For each 30-day period, the investigators were then able to track and compare cardiovascular outcomes for each group. Each month, data for a new cohort were collected, beginning a new “clinical trial.” Individuals could be included in more than one month’s worth of “trial” data as long as they continued to meet inclusion criteria.
The completeness of Danish health data meant that the researchers were confident in data about comorbidities, other prescription medications, and outcomes.
Dr. Schmidt and his colleagues performed subgroup and sensitivity analyses to look at the extent to which preexisting risks for cardiovascular disease mediated MACE risk on diclofenac initiation. They found that diclofenac initiators in the highest risk group had up to 40 excess cardiovascular events per year – about half of them fatal – that were attributable to starting the medication. Although that group had the highest absolute risk, however, “the relative risks were highest in those with the lowest baseline risk,” wrote the investigators.
In addition to looking at rates of MACE, secondary outcomes for the study included evaluating the association between medication use or non-use and each individual component of the composite primary outcome. These included first-time occurrences of the nonfatal endpoints of atrial fibrillation or flutter, ischemic (but not hemorrhagic) stroke, heart failure, and myocardial infarction. Cardiac death was death from any cardiac cause.
“Supporting use of a combined endpoint, event rates consistently increased for all individual outcomes” for diclofenac initiators compared with those who did not start an NSAID, wrote Dr. Schmidt and his colleagues.
Individuals were excluded if they had known cardiovascular, kidney, liver, or ulcer disease, and if they had malignancy or serious mental health diagnoses such as dementia or schizophrenia. Participants, aged a mean 48-56 years, had to be at least 18 years of age and could not have filled a prescription for an NSAID within the previous 12 months. Men made up 36.6%-46.3% of the cohorts.
Dr. Schmidt, of Aarhus (Denmark) University, and his collaborators said that in comparison with other NSAIDs, the short half-life of diclofenac means that a supratherapeutic plasma concentration of diclofenac soon after initiation achieves not just cyclooxygenase-2 (COX-2), but also COX-1 inhibition. However, after those high levels fall, patients taking diclofenac spend a substantial period of time with unopposed COX-2 inhibition, a state that is known to be prothrombotic, and also associated with blood pressure elevation, atherogenesis, and worsening of heart failure.
Diclofenac and ibuprofen had similar gastrointestinal bleeding risks, and both medications were associated with a higher risk of bleeding than were ibuprofen, acetaminophen, or no medication.
“Comparing diclofenac initiation with no NSAID initiation, the consistency between our results and those of previous meta-analyses of both trial and observational data provides strong evidence to guide clinical decision making,” said Dr. Schmidt and his coauthors.
“Considering its cardiovascular and gastrointestinal risks, however, there is little justification to initiate diclofenac treatment before other traditional NSAIDs,” noted the investigators. “It is time to acknowledge the potential health risk of diclofenac and to reduce its use.”
The study was funded by the Department of Clinical Epidemiology Research Foundation, University of Aarhus, and by the Program for Clinical Research Infrastructure, funded by the Lundbeck Foundation, Novo Nordisk Foundation, and the Danish Research Council. The authors reported that they had no relevant conflicts of interest.
SOURCE: Schmidt M et al. BMJ 2018;362:k3426
Those beginning diclofenac had a 50% increased 30-day risk for a composite outcome of major adverse cardiovascular events (MACE) compared with individuals who didn’t initiate an NSAID or acetaminophen (95% confidence interval for incidence rate ratio, 1.4-1.7).
The risk was still significantly elevated when the study’s first author, Morten Schmidt, MD, and his colleagues compared diclofenac initiation with beginning other NSAIDs or acetaminophen. Compared with those starting ibuprofen or acetaminophen, the MACE risk was elevated 20% in diclofenac initiators (95% CI, 1.1-1.3 for both). Initiating diclofenac was associated with 30% greater risk for MACE compared with initiating naproxen (95% CI, 1.1-1.5).
“Diclofenac is the most frequently used NSAID in low-, middle-, and high-income countries and is available over the counter in most countries; therefore, its cardiovascular risk profile is of major clinical and public health importance,” wrote Dr. Schmidt and his coauthors.
In all, the study included 1,370,832 individuals who initiated diclofenac, 3,878,454 ibuprofen initiators, 291,490 naproxen initiators, and 764,781 acetaminophen initiators. Those starting diclofenac were compared with those starting other medications, and with 1,303,209 individuals who sought health care but did not start one of the medications.
The researchers used the longstanding and complete Danish health registry system to their advantage in designing a cohort trial that was modeled to resemble a clinical trial. For each month, beginning in 1996 and continuing through 2016, Dr. Schmidt and his collaborators assembled propensity-matched cohorts of individuals to compare each study group. The study design achieved many of the aims of a clinical trial while working within the ethical constraints of studying medications now known to elevate cardiovascular risk.
For each 30-day period, the investigators were then able to track and compare cardiovascular outcomes for each group. Each month, data for a new cohort were collected, beginning a new “clinical trial.” Individuals could be included in more than one month’s worth of “trial” data as long as they continued to meet inclusion criteria.
The completeness of Danish health data meant that the researchers were confident in data about comorbidities, other prescription medications, and outcomes.
Dr. Schmidt and his colleagues performed subgroup and sensitivity analyses to look at the extent to which preexisting risks for cardiovascular disease mediated MACE risk on diclofenac initiation. They found that diclofenac initiators in the highest risk group had up to 40 excess cardiovascular events per year – about half of them fatal – that were attributable to starting the medication. Although that group had the highest absolute risk, however, “the relative risks were highest in those with the lowest baseline risk,” wrote the investigators.
In addition to looking at rates of MACE, secondary outcomes for the study included evaluating the association between medication use or non-use and each individual component of the composite primary outcome. These included first-time occurrences of the nonfatal endpoints of atrial fibrillation or flutter, ischemic (but not hemorrhagic) stroke, heart failure, and myocardial infarction. Cardiac death was death from any cardiac cause.
“Supporting use of a combined endpoint, event rates consistently increased for all individual outcomes” for diclofenac initiators compared with those who did not start an NSAID, wrote Dr. Schmidt and his colleagues.
Individuals were excluded if they had known cardiovascular, kidney, liver, or ulcer disease, and if they had malignancy or serious mental health diagnoses such as dementia or schizophrenia. Participants, aged a mean 48-56 years, had to be at least 18 years of age and could not have filled a prescription for an NSAID within the previous 12 months. Men made up 36.6%-46.3% of the cohorts.
Dr. Schmidt, of Aarhus (Denmark) University, and his collaborators said that in comparison with other NSAIDs, the short half-life of diclofenac means that a supratherapeutic plasma concentration of diclofenac soon after initiation achieves not just cyclooxygenase-2 (COX-2), but also COX-1 inhibition. However, after those high levels fall, patients taking diclofenac spend a substantial period of time with unopposed COX-2 inhibition, a state that is known to be prothrombotic, and also associated with blood pressure elevation, atherogenesis, and worsening of heart failure.
Diclofenac and ibuprofen had similar gastrointestinal bleeding risks, and both medications were associated with a higher risk of bleeding than were ibuprofen, acetaminophen, or no medication.
“Comparing diclofenac initiation with no NSAID initiation, the consistency between our results and those of previous meta-analyses of both trial and observational data provides strong evidence to guide clinical decision making,” said Dr. Schmidt and his coauthors.
“Considering its cardiovascular and gastrointestinal risks, however, there is little justification to initiate diclofenac treatment before other traditional NSAIDs,” noted the investigators. “It is time to acknowledge the potential health risk of diclofenac and to reduce its use.”
The study was funded by the Department of Clinical Epidemiology Research Foundation, University of Aarhus, and by the Program for Clinical Research Infrastructure, funded by the Lundbeck Foundation, Novo Nordisk Foundation, and the Danish Research Council. The authors reported that they had no relevant conflicts of interest.
SOURCE: Schmidt M et al. BMJ 2018;362:k3426
FROM BMJ
Key clinical point: Those starting diclofenac had increased risk for cardiovascular events or cardiac death.
Major finding: Risk for major adverse cardiovascular events was increased by 50% compared with noninitiators.
Study details: Retrospective propensity-matched cohort study using national databases and registries.
Disclosures: The study was supported by the Department of Clinical Epidemiology Research Foundation of the University of Aarhus, Denmark, and by the Program for Clinical Research Infrastructure, funded by the Lundbeck Foundation, Novo Nordisk Foundation, and the Danish Research Council. The authors reported that they had no relevant conflicts of interest.
Source: Schmidt M et al. BMJ 2018;362:k3426.
AS inflammatory back pain criteria fall short in PsA
Established criteria for identifying inflammatory back pain in people with ankylosing spondylitis do not perform well in identifying axial involvement in people with psoriatic arthritis and neither does clinical judgment, a study shows.
There’s reason to believe that the natural history of patients with psoriatic arthritis (PsA) who have axial disease could differ from those without it, and there are differences in how well criteria that are currently used to identify inflammatory back pain (IBP) in people with ankylosing spondylitis (AS) perform in people with PsA, study first author Kristy S. Yap, MBBS, and her colleagues at the University of Toronto Psoriatic Arthritis Clinic wrote in Annals of the Rheumatic Diseases.
“Axial involvement in PsA is a marker of disease severity, and those with axial disease often have worse outcomes, compared with peripheral arthritis alone,” they wrote.
This is backed up by European League Against Rheumatism recommendations that advise clinicians to consider prescribing tumor necrosis factor inhibitors for people with PsA who have active axial involvement.
“Thus, an important question when evaluating a patient with PsA is to determine if axial PsA is present,” they wrote, noting that it was currently unclear whether the three sets of criteria that exist for defining inflammatory back pain in AS – Calin, Rudwaleit, and Assessment of Spondyloarthritis International Society (ASAS) – were useful for screening for axial involvement in people with PsA.
The researchers therefore set out to determine the agreement between rheumatologist judgment of the presence of IBP as well as the presence of IBP according to the three criteria in 171 patients with PsA (52% male, average age 46.6 years), 96 of whom reported chronic back pain, including 65 with IBP and 31 with nonspecific back pain.
Radiology data from these patients showed that 27 with baseline x-rays fulfilled the New York radiographic criteria for AS, and 45 had radiographic sacroiliitis not satisfying NY criteria (excluding grade 1) and/or syndesmophytes. Nine out of 31 patients with no axial disease on x-ray had evidence of axial disease on MRI. Eighteen out of 54 patients had axial involvement without back pain.
Results showed that agreement (kappa coefficient) between rheumatologist judgment of IBP and IBP criteria in patients with back pain was moderate and was highest for the Calin criteria (0.70; 95% confidence interval, 0.56-0.85), followed by the ASAS criteria (0.61; 95% CI, 0.46-0.76) and the Rudwaleit criteria (0.59; 95% CI, 0.44-0.74).
When x-ray or MRI change was considered “gold standard” for axial involvement for all patients, the specificity was high for rheumatologist judgment of IBP as well as Calin, Rudwaleit, and ASAS criteria, but their sensitivity was low, the researchers reported.
When the investigators compared positive likelihood ratios (LRs) for the presence of back pain, the Rudwaleit criteria (2.17) performed the best in ruling in axial disease, whereas the LRs were 1.75 for Calin and 1.86 for ASAS criteria. Rheumatologist-reported back pain (0.68) performed the best for ruling out axial disease when comparing negative LRs.
“The low positive LRs of the Calin, Rudwaleit, and ASAS criteria as well as that of rheumatologist report of back pain or judgment of IBP for [axial] PsA defined as any axial radiological change found in our study suggests that none of these criteria performed well in detecting axial disease in patients with PsA,” the study authors wrote.
The authors also conducted an exploratory analysis within patients with PsA with back involvement (defined by x-rays or MRI) and compared those with back pain (n = 36) or without (n = 18). The back pain group had a significantly higher Bath Ankylosing Spondylitis Disease Activity Index score (5.72 vs. 4.27), a finding that the authors said they expected because it is a patient-reported measure.
The back pain group also had a lower prevalence of human leukocyte antigen-B*38 (2.78 vs. 27.78), a finding that the authors said was interesting but would need to be replicated in future studies.
The prevalence of HLA-B*27, HLA-B*08, and HLA-C*06 was similar between patients with and without back pain, indicating “that the two groups are largely similar and hence, for the purpose of defining axial disease in PsA, symptoms (back pain) may not be important.”
“The findings of this study suggest that rheumatologist-judged IBP or the criteria for IBP developed for AS may not perform well when ascertaining axial involvement in PsA,” the study authors concluded.
“Moreover, patients with axial radiological changes without back pain were similar to those with back pain. ... In order to stratify patients with poorer prognosis, rheumatologists should consider conducting axial imaging in all patients with PsA regardless of the presence or the nature of back pain,” they added.
The study was funded by the University of Toronto Psoriatic Arthritis Program, which is supported by the Krembil Foundation.
SOURCE: Yap KS et al. Ann Rheum Dis. 2018 Aug 4. doi: 10.1136/annrheumdis-2018-213334.
Identifying psoriatic arthritis with axial disease (AxPsA) is important because it changes the treatment selection and also may be associated with a more severe disease course. In a recent paper by Yap et al, the investigators underscore the challenges in identifying the prevalence of axial disease in PsA. Many of our patients with PsA report back pain at some point in their disease course, and as the rheumatologist, we must grapple with whether their symptoms represent inflammatory disease that requires a change in therapy.
In this study, the authors examined the correlation of three definitions of inflammatory back pain (IBP) with both the rheumatologist’s assessment of whether the patient has IBP and with the presence of imaging findings such as x-ray or MRI abnormalities in the sacroiliac joints or lumbar spine. Of the 171 patients studied, 38% were reported to have IBP per the rheumatologist, 18% were thought to have noninflammatory back pain, and 32% had imaging findings consistent with AxSpA. The agreement between the rheumatologist and the inflammatory back pain criteria was reasonable (kappa 0.6-0.7). Rheumatologists and IBP criteria had moderate sensitivity (0.73-0.82) for having x-ray or MRI changes consistent with axial disease but low specificity (0.33-0.46). Surprisingly, HLA markers were not good markers of having axial disease in this population, aside from HLA-B38, which was protective but relatively uncommon.
The bottom line is that using IBP criteria or our general gestalt is still not as good as getting appropriate imaging and further underscores the potential need to screen patients with PsA, particularly those reporting back pain, for axial involvement.
Alexis R. Ogdie, MD, is director of the Penn Psoriatic Arthritis Clinic at the University of Pennsylvania, Philadelphia, and is a member of the steering committee for the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis.
Identifying psoriatic arthritis with axial disease (AxPsA) is important because it changes the treatment selection and also may be associated with a more severe disease course. In a recent paper by Yap et al, the investigators underscore the challenges in identifying the prevalence of axial disease in PsA. Many of our patients with PsA report back pain at some point in their disease course, and as the rheumatologist, we must grapple with whether their symptoms represent inflammatory disease that requires a change in therapy.
In this study, the authors examined the correlation of three definitions of inflammatory back pain (IBP) with both the rheumatologist’s assessment of whether the patient has IBP and with the presence of imaging findings such as x-ray or MRI abnormalities in the sacroiliac joints or lumbar spine. Of the 171 patients studied, 38% were reported to have IBP per the rheumatologist, 18% were thought to have noninflammatory back pain, and 32% had imaging findings consistent with AxSpA. The agreement between the rheumatologist and the inflammatory back pain criteria was reasonable (kappa 0.6-0.7). Rheumatologists and IBP criteria had moderate sensitivity (0.73-0.82) for having x-ray or MRI changes consistent with axial disease but low specificity (0.33-0.46). Surprisingly, HLA markers were not good markers of having axial disease in this population, aside from HLA-B38, which was protective but relatively uncommon.
The bottom line is that using IBP criteria or our general gestalt is still not as good as getting appropriate imaging and further underscores the potential need to screen patients with PsA, particularly those reporting back pain, for axial involvement.
Alexis R. Ogdie, MD, is director of the Penn Psoriatic Arthritis Clinic at the University of Pennsylvania, Philadelphia, and is a member of the steering committee for the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis.
Identifying psoriatic arthritis with axial disease (AxPsA) is important because it changes the treatment selection and also may be associated with a more severe disease course. In a recent paper by Yap et al, the investigators underscore the challenges in identifying the prevalence of axial disease in PsA. Many of our patients with PsA report back pain at some point in their disease course, and as the rheumatologist, we must grapple with whether their symptoms represent inflammatory disease that requires a change in therapy.
In this study, the authors examined the correlation of three definitions of inflammatory back pain (IBP) with both the rheumatologist’s assessment of whether the patient has IBP and with the presence of imaging findings such as x-ray or MRI abnormalities in the sacroiliac joints or lumbar spine. Of the 171 patients studied, 38% were reported to have IBP per the rheumatologist, 18% were thought to have noninflammatory back pain, and 32% had imaging findings consistent with AxSpA. The agreement between the rheumatologist and the inflammatory back pain criteria was reasonable (kappa 0.6-0.7). Rheumatologists and IBP criteria had moderate sensitivity (0.73-0.82) for having x-ray or MRI changes consistent with axial disease but low specificity (0.33-0.46). Surprisingly, HLA markers were not good markers of having axial disease in this population, aside from HLA-B38, which was protective but relatively uncommon.
The bottom line is that using IBP criteria or our general gestalt is still not as good as getting appropriate imaging and further underscores the potential need to screen patients with PsA, particularly those reporting back pain, for axial involvement.
Alexis R. Ogdie, MD, is director of the Penn Psoriatic Arthritis Clinic at the University of Pennsylvania, Philadelphia, and is a member of the steering committee for the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis.
Established criteria for identifying inflammatory back pain in people with ankylosing spondylitis do not perform well in identifying axial involvement in people with psoriatic arthritis and neither does clinical judgment, a study shows.
There’s reason to believe that the natural history of patients with psoriatic arthritis (PsA) who have axial disease could differ from those without it, and there are differences in how well criteria that are currently used to identify inflammatory back pain (IBP) in people with ankylosing spondylitis (AS) perform in people with PsA, study first author Kristy S. Yap, MBBS, and her colleagues at the University of Toronto Psoriatic Arthritis Clinic wrote in Annals of the Rheumatic Diseases.
“Axial involvement in PsA is a marker of disease severity, and those with axial disease often have worse outcomes, compared with peripheral arthritis alone,” they wrote.
This is backed up by European League Against Rheumatism recommendations that advise clinicians to consider prescribing tumor necrosis factor inhibitors for people with PsA who have active axial involvement.
“Thus, an important question when evaluating a patient with PsA is to determine if axial PsA is present,” they wrote, noting that it was currently unclear whether the three sets of criteria that exist for defining inflammatory back pain in AS – Calin, Rudwaleit, and Assessment of Spondyloarthritis International Society (ASAS) – were useful for screening for axial involvement in people with PsA.
The researchers therefore set out to determine the agreement between rheumatologist judgment of the presence of IBP as well as the presence of IBP according to the three criteria in 171 patients with PsA (52% male, average age 46.6 years), 96 of whom reported chronic back pain, including 65 with IBP and 31 with nonspecific back pain.
Radiology data from these patients showed that 27 with baseline x-rays fulfilled the New York radiographic criteria for AS, and 45 had radiographic sacroiliitis not satisfying NY criteria (excluding grade 1) and/or syndesmophytes. Nine out of 31 patients with no axial disease on x-ray had evidence of axial disease on MRI. Eighteen out of 54 patients had axial involvement without back pain.
Results showed that agreement (kappa coefficient) between rheumatologist judgment of IBP and IBP criteria in patients with back pain was moderate and was highest for the Calin criteria (0.70; 95% confidence interval, 0.56-0.85), followed by the ASAS criteria (0.61; 95% CI, 0.46-0.76) and the Rudwaleit criteria (0.59; 95% CI, 0.44-0.74).
When x-ray or MRI change was considered “gold standard” for axial involvement for all patients, the specificity was high for rheumatologist judgment of IBP as well as Calin, Rudwaleit, and ASAS criteria, but their sensitivity was low, the researchers reported.
When the investigators compared positive likelihood ratios (LRs) for the presence of back pain, the Rudwaleit criteria (2.17) performed the best in ruling in axial disease, whereas the LRs were 1.75 for Calin and 1.86 for ASAS criteria. Rheumatologist-reported back pain (0.68) performed the best for ruling out axial disease when comparing negative LRs.
“The low positive LRs of the Calin, Rudwaleit, and ASAS criteria as well as that of rheumatologist report of back pain or judgment of IBP for [axial] PsA defined as any axial radiological change found in our study suggests that none of these criteria performed well in detecting axial disease in patients with PsA,” the study authors wrote.
The authors also conducted an exploratory analysis within patients with PsA with back involvement (defined by x-rays or MRI) and compared those with back pain (n = 36) or without (n = 18). The back pain group had a significantly higher Bath Ankylosing Spondylitis Disease Activity Index score (5.72 vs. 4.27), a finding that the authors said they expected because it is a patient-reported measure.
The back pain group also had a lower prevalence of human leukocyte antigen-B*38 (2.78 vs. 27.78), a finding that the authors said was interesting but would need to be replicated in future studies.
The prevalence of HLA-B*27, HLA-B*08, and HLA-C*06 was similar between patients with and without back pain, indicating “that the two groups are largely similar and hence, for the purpose of defining axial disease in PsA, symptoms (back pain) may not be important.”
“The findings of this study suggest that rheumatologist-judged IBP or the criteria for IBP developed for AS may not perform well when ascertaining axial involvement in PsA,” the study authors concluded.
“Moreover, patients with axial radiological changes without back pain were similar to those with back pain. ... In order to stratify patients with poorer prognosis, rheumatologists should consider conducting axial imaging in all patients with PsA regardless of the presence or the nature of back pain,” they added.
The study was funded by the University of Toronto Psoriatic Arthritis Program, which is supported by the Krembil Foundation.
SOURCE: Yap KS et al. Ann Rheum Dis. 2018 Aug 4. doi: 10.1136/annrheumdis-2018-213334.
Established criteria for identifying inflammatory back pain in people with ankylosing spondylitis do not perform well in identifying axial involvement in people with psoriatic arthritis and neither does clinical judgment, a study shows.
There’s reason to believe that the natural history of patients with psoriatic arthritis (PsA) who have axial disease could differ from those without it, and there are differences in how well criteria that are currently used to identify inflammatory back pain (IBP) in people with ankylosing spondylitis (AS) perform in people with PsA, study first author Kristy S. Yap, MBBS, and her colleagues at the University of Toronto Psoriatic Arthritis Clinic wrote in Annals of the Rheumatic Diseases.
“Axial involvement in PsA is a marker of disease severity, and those with axial disease often have worse outcomes, compared with peripheral arthritis alone,” they wrote.
This is backed up by European League Against Rheumatism recommendations that advise clinicians to consider prescribing tumor necrosis factor inhibitors for people with PsA who have active axial involvement.
“Thus, an important question when evaluating a patient with PsA is to determine if axial PsA is present,” they wrote, noting that it was currently unclear whether the three sets of criteria that exist for defining inflammatory back pain in AS – Calin, Rudwaleit, and Assessment of Spondyloarthritis International Society (ASAS) – were useful for screening for axial involvement in people with PsA.
The researchers therefore set out to determine the agreement between rheumatologist judgment of the presence of IBP as well as the presence of IBP according to the three criteria in 171 patients with PsA (52% male, average age 46.6 years), 96 of whom reported chronic back pain, including 65 with IBP and 31 with nonspecific back pain.
Radiology data from these patients showed that 27 with baseline x-rays fulfilled the New York radiographic criteria for AS, and 45 had radiographic sacroiliitis not satisfying NY criteria (excluding grade 1) and/or syndesmophytes. Nine out of 31 patients with no axial disease on x-ray had evidence of axial disease on MRI. Eighteen out of 54 patients had axial involvement without back pain.
Results showed that agreement (kappa coefficient) between rheumatologist judgment of IBP and IBP criteria in patients with back pain was moderate and was highest for the Calin criteria (0.70; 95% confidence interval, 0.56-0.85), followed by the ASAS criteria (0.61; 95% CI, 0.46-0.76) and the Rudwaleit criteria (0.59; 95% CI, 0.44-0.74).
When x-ray or MRI change was considered “gold standard” for axial involvement for all patients, the specificity was high for rheumatologist judgment of IBP as well as Calin, Rudwaleit, and ASAS criteria, but their sensitivity was low, the researchers reported.
When the investigators compared positive likelihood ratios (LRs) for the presence of back pain, the Rudwaleit criteria (2.17) performed the best in ruling in axial disease, whereas the LRs were 1.75 for Calin and 1.86 for ASAS criteria. Rheumatologist-reported back pain (0.68) performed the best for ruling out axial disease when comparing negative LRs.
“The low positive LRs of the Calin, Rudwaleit, and ASAS criteria as well as that of rheumatologist report of back pain or judgment of IBP for [axial] PsA defined as any axial radiological change found in our study suggests that none of these criteria performed well in detecting axial disease in patients with PsA,” the study authors wrote.
The authors also conducted an exploratory analysis within patients with PsA with back involvement (defined by x-rays or MRI) and compared those with back pain (n = 36) or without (n = 18). The back pain group had a significantly higher Bath Ankylosing Spondylitis Disease Activity Index score (5.72 vs. 4.27), a finding that the authors said they expected because it is a patient-reported measure.
The back pain group also had a lower prevalence of human leukocyte antigen-B*38 (2.78 vs. 27.78), a finding that the authors said was interesting but would need to be replicated in future studies.
The prevalence of HLA-B*27, HLA-B*08, and HLA-C*06 was similar between patients with and without back pain, indicating “that the two groups are largely similar and hence, for the purpose of defining axial disease in PsA, symptoms (back pain) may not be important.”
“The findings of this study suggest that rheumatologist-judged IBP or the criteria for IBP developed for AS may not perform well when ascertaining axial involvement in PsA,” the study authors concluded.
“Moreover, patients with axial radiological changes without back pain were similar to those with back pain. ... In order to stratify patients with poorer prognosis, rheumatologists should consider conducting axial imaging in all patients with PsA regardless of the presence or the nature of back pain,” they added.
The study was funded by the University of Toronto Psoriatic Arthritis Program, which is supported by the Krembil Foundation.
SOURCE: Yap KS et al. Ann Rheum Dis. 2018 Aug 4. doi: 10.1136/annrheumdis-2018-213334.
FROM ANNALS OF THE RHEUMATIC DISEASES
Key clinical point:
Major finding: Agreement as measured by kappa coefficient between rheumatologist judgment of inflammatory back pain and IBP criteria in patients with back pain was moderate and was highest for the Calin criteria (0.70; 95% confidence interval, 0.56-0.85), followed by the ASAS criteria (0.61; 95% CI, 0.46-0.76) and the Rudwaleit criteria (0.59; 95% CI, 0.44-0.74).
Study details: Prospectively collected data from 171 patients attending a PsA clinic
Disclosures: The study was funded by the University of Toronto Psoriatic Arthritis Program, which is supported by the Krembil Foundation.
Source: Yap KS et al. Ann Rheum Dis. 2018 Aug 4. doi: 10.1136/annrheumdis-2018-213334.