Amy Karon

The most recent update of the American Society of Clinical Oncology and College of American Pathologists (ASCO-CAP) guidelines for interpreting HER2 diagnostic assays affected about 5% of breast cancer patients in three large clinical trials, researchers reported in the Journal of Clinical Oncology.

Although this is “a small minority of patients,” clinical correlates fail to support three of the five groups of patients that the updated guidelines designated based on HER2 FISH [fluorescent in situ hybridization] ratio and average number of HER2 gene copies per tumor cell, said Michael Press, MD, of the University of Southern California Norris Comprehensive Cancer Center, Los Angeles, and his associates.

“Our findings support the original categorizations of HER2 by FISH status in BCIRG [Breast Cancer International Research Group]/Translational Research in Oncology trials,” they said.

The most recent ASCO-CAP guidelines differ from Food and Drug Administration–approved package inserts for HER2 FISH companion diagnostic assays, which reflect the criteria used in clinical trials of the BCIRG/Translational Research in Oncology (TRIO) and previous (2007) ASCO-CAP guidelines, the researchers noted. In particular, the updated guidelines split patients into group 1 (in situ hybridization [ISH] positive, with a HER2-to-chromosome 17 centromere ratio of at least 2.0 and an average of at least four copies of the HER2 gene per tumor cell), group 2 (ISH positive, with a ratio of at least 2.0 and less than four HER2 gene copies), group 3 (ISH positive, with a ratio of less than 2.0 and at least six gene copies), group 4 (ISH equivocal, with a ratio of less than 2.0 and at least four but fewer than six gene copies), and group 5 (ISH negative, a ratio of less than 2.0 and fewer than four gene copies).

The researchers retrospectively analyzed detailed outcomes data from the BCIRG-005, BCIRG- 006, and BCIRG-007 clinical trials, which “now have long-term clinical follow-up data available that facilitate determination of whether the new HER2 guidelines for FISH are clinically useful and predictive of known outcomes,” they said.

The investigators counted cases in each of the five groups and looked to see if these groups correlated with the clinical implications of HER2 gene amplification, such as overexpression of HER2 protein and worse disease-free and overall survival without HER2 targeted therapy (J Clin Oncol. 2016 Aug 29. doi: 10.1200/JCO.2016.66.6693).

Among 10,468 patients in these trials, the vast majority fell into group 1 (41%) or 5 (54%), while 0.7% were in group 2, 0.5% were in group 3, and 4% were in group 4. HER2 amplification status did not change for most patients because the updated guidelines did not affect group 1 (amplified) or group 5 (not amplified). But groups 2 and 4, which the guidelines respectively designated as ISH positive and ISH equivocal, actually seemed to be HER2 not amplified, as neither group was associated with HER2 protein overexpression, group 2 showed a lack of response to trastuzumab therapy, and patients in group 4 who received only chemotherapy had a prognosis similar to that of group 5 in terms of disease-free and overall survival, the researchers reported.

“Overall, we observe approximately 99.3% agreement with initial FDA-approved guidelines and 94.7% agreement with current ASCO-CAP guidelines,” they wrote. “The 4.6% differential is related to only two groups, groups 3 and 4, introduced by ASCO-CAP that lead to different assessments of HER2 status, compared with FDA criteria. Finally, our observations indicate group 2, which represents 0.7% of breast cancers, is misclassified by both the FDA and ASCO-CAP guidelines as amplified and ISH positive.”

They also found that patients in group 3, which the guidelines designated as ISH positive, actually had both HER2 amplified and HER2 not-amplified breast cancers. “There are now nearly 3 decades of accumulated experience and published data studying this alteration in human breast cancers,” the investigators concluded. “Although guidelines are helpful, diagnostic judgment and long-term outcome data remain important in the evaluation of testing criteria.”

The most recent update of the American Society of Clinical Oncology and College of American Pathologists (ASCO-CAP) guidelines for interpreting HER2 diagnostic assays affected about 5% of breast cancer patients in three large clinical trials, researchers reported in the Journal of Clinical Oncology.

Although this is “a small minority of patients,” clinical correlates fail to support three of the five groups of patients that the updated guidelines designated based on HER2 FISH [fluorescent in situ hybridization] ratio and average number of HER2 gene copies per tumor cell, said Michael Press, MD, of the University of Southern California Norris Comprehensive Cancer Center, Los Angeles, and his associates.

“Our findings support the original categorizations of HER2 by FISH status in BCIRG [Breast Cancer International Research Group]/Translational Research in Oncology trials,” they said.

The most recent ASCO-CAP guidelines differ from Food and Drug Administration–approved package inserts for HER2 FISH companion diagnostic assays, which reflect the criteria used in clinical trials of the BCIRG/Translational Research in Oncology (TRIO) and previous (2007) ASCO-CAP guidelines, the researchers noted. In particular, the updated guidelines split patients into group 1 (in situ hybridization [ISH] positive, with a HER2-to-chromosome 17 centromere ratio of at least 2.0 and an average of at least four copies of the HER2 gene per tumor cell), group 2 (ISH positive, with a ratio of at least 2.0 and less than four HER2 gene copies), group 3 (ISH positive, with a ratio of less than 2.0 and at least six gene copies), group 4 (ISH equivocal, with a ratio of less than 2.0 and at least four but fewer than six gene copies), and group 5 (ISH negative, a ratio of less than 2.0 and fewer than four gene copies).

The researchers retrospectively analyzed detailed outcomes data from the BCIRG-005, BCIRG- 006, and BCIRG-007 clinical trials, which “now have long-term clinical follow-up data available that facilitate determination of whether the new HER2 guidelines for FISH are clinically useful and predictive of known outcomes,” they said.

The investigators counted cases in each of the five groups and looked to see if these groups correlated with the clinical implications of HER2 gene amplification, such as overexpression of HER2 protein and worse disease-free and overall survival without HER2 targeted therapy (J Clin Oncol. 2016 Aug 29. doi: 10.1200/JCO.2016.66.6693).

Among 10,468 patients in these trials, the vast majority fell into group 1 (41%) or 5 (54%), while 0.7% were in group 2, 0.5% were in group 3, and 4% were in group 4. HER2 amplification status did not change for most patients because the updated guidelines did not affect group 1 (amplified) or group 5 (not amplified). But groups 2 and 4, which the guidelines respectively designated as ISH positive and ISH equivocal, actually seemed to be HER2 not amplified, as neither group was associated with HER2 protein overexpression, group 2 showed a lack of response to trastuzumab therapy, and patients in group 4 who received only chemotherapy had a prognosis similar to that of group 5 in terms of disease-free and overall survival, the researchers reported.

“Overall, we observe approximately 99.3% agreement with initial FDA-approved guidelines and 94.7% agreement with current ASCO-CAP guidelines,” they wrote. “The 4.6% differential is related to only two groups, groups 3 and 4, introduced by ASCO-CAP that lead to different assessments of HER2 status, compared with FDA criteria. Finally, our observations indicate group 2, which represents 0.7% of breast cancers, is misclassified by both the FDA and ASCO-CAP guidelines as amplified and ISH positive.”

They also found that patients in group 3, which the guidelines designated as ISH positive, actually had both HER2 amplified and HER2 not-amplified breast cancers. “There are now nearly 3 decades of accumulated experience and published data studying this alteration in human breast cancers,” the investigators concluded. “Although guidelines are helpful, diagnostic judgment and long-term outcome data remain important in the evaluation of testing criteria.”

The most recent update of the American Society of Clinical Oncology and College of American Pathologists (ASCO-CAP) guidelines for interpreting HER2 diagnostic assays affected about 5% of breast cancer patients in three large clinical trials, researchers reported in the Journal of Clinical Oncology.

Although this is “a small minority of patients,” clinical correlates fail to support three of the five groups of patients that the updated guidelines designated based on HER2 FISH [fluorescent in situ hybridization] ratio and average number of HER2 gene copies per tumor cell, said Michael Press, MD, of the University of Southern California Norris Comprehensive Cancer Center, Los Angeles, and his associates.

“Our findings support the original categorizations of HER2 by FISH status in BCIRG [Breast Cancer International Research Group]/Translational Research in Oncology trials,” they said.

The most recent ASCO-CAP guidelines differ from Food and Drug Administration–approved package inserts for HER2 FISH companion diagnostic assays, which reflect the criteria used in clinical trials of the BCIRG/Translational Research in Oncology (TRIO) and previous (2007) ASCO-CAP guidelines, the researchers noted. In particular, the updated guidelines split patients into group 1 (in situ hybridization [ISH] positive, with a HER2-to-chromosome 17 centromere ratio of at least 2.0 and an average of at least four copies of the HER2 gene per tumor cell), group 2 (ISH positive, with a ratio of at least 2.0 and less than four HER2 gene copies), group 3 (ISH positive, with a ratio of less than 2.0 and at least six gene copies), group 4 (ISH equivocal, with a ratio of less than 2.0 and at least four but fewer than six gene copies), and group 5 (ISH negative, a ratio of less than 2.0 and fewer than four gene copies).

The researchers retrospectively analyzed detailed outcomes data from the BCIRG-005, BCIRG- 006, and BCIRG-007 clinical trials, which “now have long-term clinical follow-up data available that facilitate determination of whether the new HER2 guidelines for FISH are clinically useful and predictive of known outcomes,” they said.

The investigators counted cases in each of the five groups and looked to see if these groups correlated with the clinical implications of HER2 gene amplification, such as overexpression of HER2 protein and worse disease-free and overall survival without HER2 targeted therapy (J Clin Oncol. 2016 Aug 29. doi: 10.1200/JCO.2016.66.6693).

Among 10,468 patients in these trials, the vast majority fell into group 1 (41%) or 5 (54%), while 0.7% were in group 2, 0.5% were in group 3, and 4% were in group 4. HER2 amplification status did not change for most patients because the updated guidelines did not affect group 1 (amplified) or group 5 (not amplified). But groups 2 and 4, which the guidelines respectively designated as ISH positive and ISH equivocal, actually seemed to be HER2 not amplified, as neither group was associated with HER2 protein overexpression, group 2 showed a lack of response to trastuzumab therapy, and patients in group 4 who received only chemotherapy had a prognosis similar to that of group 5 in terms of disease-free and overall survival, the researchers reported.

“Overall, we observe approximately 99.3% agreement with initial FDA-approved guidelines and 94.7% agreement with current ASCO-CAP guidelines,” they wrote. “The 4.6% differential is related to only two groups, groups 3 and 4, introduced by ASCO-CAP that lead to different assessments of HER2 status, compared with FDA criteria. Finally, our observations indicate group 2, which represents 0.7% of breast cancers, is misclassified by both the FDA and ASCO-CAP guidelines as amplified and ISH positive.”

They also found that patients in group 3, which the guidelines designated as ISH positive, actually had both HER2 amplified and HER2 not-amplified breast cancers. “There are now nearly 3 decades of accumulated experience and published data studying this alteration in human breast cancers,” the investigators concluded. “Although guidelines are helpful, diagnostic judgment and long-term outcome data remain important in the evaluation of testing criteria.”

Eight weeks of a two-drug combination led to sustained viral response (SVR) in 94% of noncirrhotic, treatment-naive, genotype 1 hepatitis C virus–infected patients, based on a retrospective study of Veterans Affairs health system data presented in the September issue of Gastroenterology.

But VA clinicians prescribed the 8-week regimen to less than half of eligible patients, said George Ioannou, MD, of the Veterans Affairs Puget Sound Health Care System in Seattle. Increasing its use, when appropriate, “could save on costs,” although the currently available interferon-free regimens “leave substantial room for improvement in SVRs among persons with cirrhosis and genotype 2 or 3 infections,” he and his associates wrote.

The two-drug regimen contained sofosbuvir and ledipasvir. Clinical trials of sofosbuvir, ledipasvir/sofosbuvir, and paritaprevir/ritonavir/ombitasvir and dasabuvir (PrOD) have reported SVR rates well above 90%, “with the exception of certain subgroups, such as patients with Child’s B or C cirrhosis and those infected with genotype 3 HCV,” the researchers noted. However, older interferon-based regimens did not perform as well in the real world as in trials, and “it is unclear if this is the case for current interferon-free regimens, or whether the relative ease of administration of these regimens has narrowed the SVR gap between clinical trials and clinical practice.” Questions also persist about how effective the interferon-free regimens are in various HCV genotypes and subgroups, they added (Gastroenterology 2016 Jul 18. doi: 10.1053/j.gastro.2016.05.049). To help answer these questions, they analyzed data from more than 17,000 HCV patients in the VA health care system who received sofosbuvir, ledipasvir/sofosbuvir, or paritaprevir/ritonavir/ombitasvir and dasabuvir between January 2014 and June 2015. The cohort included about 14,000 patients with genotype 1 infections, about 2,100 patients with genotype 2 infections, about 1,200 patients with genotype 3 infections, and 135 patients with genotype 4 infections. Patients averaged 62 years of age, about half were non-Hispanic white, 29% were non-Hispanic black, and nearly a third had been diagnosed with cirrhosis, including 10% with decompensated cirrhosis.

The VA guidelines recommended 8 weeks instead of 12 weeks of ledipasvir/sofosbuvir for treatment-naive, noncirrhotic, genotype 1 patients with a viral load under 6 million IU/mL, although that recommendation was not FDA approved and was based only on a post hoc analysis of the ION-3 trial, the investigators noted. These concerns seemed to affect practice – of 4,066 eligible patients, only 1,975 (49%) received the 8-week regimen. Notably, however, their rate of SVR 12 weeks after treatment (SVR12) was 95.1% (95% confidence interval, 94% to 96%) – nearly identical to that of patients with the same characteristics who received 12 weeks of treatment (95.8%; 94.7% to 96.8%; P = .6).

Rates of SVR12 did not significantly differ between ledipasvir/sofosbuvir and PrOD regimens, including in multivariable and propensity score–adjusted analyses, the researchers reported. Rates of SVR12 also exceeded 90% in subgroups of treatment-experienced and cirrhotic genotype 1 patients, they added. However, rates of SVR12 were lower for nongenotype 1 infections, as has been observed in trials. Specifically, rates of SVR12 were 90% for genotype 4 patients, 86% for genotype 2 patients who received sofosbuvir and ribavirin, and 75% for genotype 3 patients (including 78% for patients given ledipasvir/sofosbuvir plus ribavirin, 87% for patients given sofosbuvir and pegylated interferon plus ribavirin, and 71% for patients given sofosbuvir monotherapy). For cirrhotic patients, rates of SVR12 were 91% for genotype 1, 77% for genotype 2, 66% for genotype 3, and 84% for genotype 4.

The findings confirm that the new interferon-free regimens “can achieve remarkably high SVR rates in real-world clinical practice, especially in genotype 1–infected patients,” the researchers wrote. The cost of these regimens is “the main obstacle to curing HCV” in as many patients as possible, but is expected to “decline dramatically” as the FDA approves new regimens, they noted. “In fact, costs decreased dramatically within the VA after the completion of our study and after the FDA approved elbasvir/grazoprevir in January 2016.”

The study was funded by the Department of Veterans Affairs. The investigators had no disclosures.

Eight weeks of a two-drug combination led to sustained viral response (SVR) in 94% of noncirrhotic, treatment-naive, genotype 1 hepatitis C virus–infected patients, based on a retrospective study of Veterans Affairs health system data presented in the September issue of Gastroenterology.

But VA clinicians prescribed the 8-week regimen to less than half of eligible patients, said George Ioannou, MD, of the Veterans Affairs Puget Sound Health Care System in Seattle. Increasing its use, when appropriate, “could save on costs,” although the currently available interferon-free regimens “leave substantial room for improvement in SVRs among persons with cirrhosis and genotype 2 or 3 infections,” he and his associates wrote.

The two-drug regimen contained sofosbuvir and ledipasvir. Clinical trials of sofosbuvir, ledipasvir/sofosbuvir, and paritaprevir/ritonavir/ombitasvir and dasabuvir (PrOD) have reported SVR rates well above 90%, “with the exception of certain subgroups, such as patients with Child’s B or C cirrhosis and those infected with genotype 3 HCV,” the researchers noted. However, older interferon-based regimens did not perform as well in the real world as in trials, and “it is unclear if this is the case for current interferon-free regimens, or whether the relative ease of administration of these regimens has narrowed the SVR gap between clinical trials and clinical practice.” Questions also persist about how effective the interferon-free regimens are in various HCV genotypes and subgroups, they added (Gastroenterology 2016 Jul 18. doi: 10.1053/j.gastro.2016.05.049). To help answer these questions, they analyzed data from more than 17,000 HCV patients in the VA health care system who received sofosbuvir, ledipasvir/sofosbuvir, or paritaprevir/ritonavir/ombitasvir and dasabuvir between January 2014 and June 2015. The cohort included about 14,000 patients with genotype 1 infections, about 2,100 patients with genotype 2 infections, about 1,200 patients with genotype 3 infections, and 135 patients with genotype 4 infections. Patients averaged 62 years of age, about half were non-Hispanic white, 29% were non-Hispanic black, and nearly a third had been diagnosed with cirrhosis, including 10% with decompensated cirrhosis.

The VA guidelines recommended 8 weeks instead of 12 weeks of ledipasvir/sofosbuvir for treatment-naive, noncirrhotic, genotype 1 patients with a viral load under 6 million IU/mL, although that recommendation was not FDA approved and was based only on a post hoc analysis of the ION-3 trial, the investigators noted. These concerns seemed to affect practice – of 4,066 eligible patients, only 1,975 (49%) received the 8-week regimen. Notably, however, their rate of SVR 12 weeks after treatment (SVR12) was 95.1% (95% confidence interval, 94% to 96%) – nearly identical to that of patients with the same characteristics who received 12 weeks of treatment (95.8%; 94.7% to 96.8%; P = .6).

Rates of SVR12 did not significantly differ between ledipasvir/sofosbuvir and PrOD regimens, including in multivariable and propensity score–adjusted analyses, the researchers reported. Rates of SVR12 also exceeded 90% in subgroups of treatment-experienced and cirrhotic genotype 1 patients, they added. However, rates of SVR12 were lower for nongenotype 1 infections, as has been observed in trials. Specifically, rates of SVR12 were 90% for genotype 4 patients, 86% for genotype 2 patients who received sofosbuvir and ribavirin, and 75% for genotype 3 patients (including 78% for patients given ledipasvir/sofosbuvir plus ribavirin, 87% for patients given sofosbuvir and pegylated interferon plus ribavirin, and 71% for patients given sofosbuvir monotherapy). For cirrhotic patients, rates of SVR12 were 91% for genotype 1, 77% for genotype 2, 66% for genotype 3, and 84% for genotype 4.

The findings confirm that the new interferon-free regimens “can achieve remarkably high SVR rates in real-world clinical practice, especially in genotype 1–infected patients,” the researchers wrote. The cost of these regimens is “the main obstacle to curing HCV” in as many patients as possible, but is expected to “decline dramatically” as the FDA approves new regimens, they noted. “In fact, costs decreased dramatically within the VA after the completion of our study and after the FDA approved elbasvir/grazoprevir in January 2016.”

The study was funded by the Department of Veterans Affairs. The investigators had no disclosures.

Eight weeks of a two-drug combination led to sustained viral response (SVR) in 94% of noncirrhotic, treatment-naive, genotype 1 hepatitis C virus–infected patients, based on a retrospective study of Veterans Affairs health system data presented in the September issue of Gastroenterology.

But VA clinicians prescribed the 8-week regimen to less than half of eligible patients, said George Ioannou, MD, of the Veterans Affairs Puget Sound Health Care System in Seattle. Increasing its use, when appropriate, “could save on costs,” although the currently available interferon-free regimens “leave substantial room for improvement in SVRs among persons with cirrhosis and genotype 2 or 3 infections,” he and his associates wrote.

The two-drug regimen contained sofosbuvir and ledipasvir. Clinical trials of sofosbuvir, ledipasvir/sofosbuvir, and paritaprevir/ritonavir/ombitasvir and dasabuvir (PrOD) have reported SVR rates well above 90%, “with the exception of certain subgroups, such as patients with Child’s B or C cirrhosis and those infected with genotype 3 HCV,” the researchers noted. However, older interferon-based regimens did not perform as well in the real world as in trials, and “it is unclear if this is the case for current interferon-free regimens, or whether the relative ease of administration of these regimens has narrowed the SVR gap between clinical trials and clinical practice.” Questions also persist about how effective the interferon-free regimens are in various HCV genotypes and subgroups, they added (Gastroenterology 2016 Jul 18. doi: 10.1053/j.gastro.2016.05.049). To help answer these questions, they analyzed data from more than 17,000 HCV patients in the VA health care system who received sofosbuvir, ledipasvir/sofosbuvir, or paritaprevir/ritonavir/ombitasvir and dasabuvir between January 2014 and June 2015. The cohort included about 14,000 patients with genotype 1 infections, about 2,100 patients with genotype 2 infections, about 1,200 patients with genotype 3 infections, and 135 patients with genotype 4 infections. Patients averaged 62 years of age, about half were non-Hispanic white, 29% were non-Hispanic black, and nearly a third had been diagnosed with cirrhosis, including 10% with decompensated cirrhosis.

The VA guidelines recommended 8 weeks instead of 12 weeks of ledipasvir/sofosbuvir for treatment-naive, noncirrhotic, genotype 1 patients with a viral load under 6 million IU/mL, although that recommendation was not FDA approved and was based only on a post hoc analysis of the ION-3 trial, the investigators noted. These concerns seemed to affect practice – of 4,066 eligible patients, only 1,975 (49%) received the 8-week regimen. Notably, however, their rate of SVR 12 weeks after treatment (SVR12) was 95.1% (95% confidence interval, 94% to 96%) – nearly identical to that of patients with the same characteristics who received 12 weeks of treatment (95.8%; 94.7% to 96.8%; P = .6).

Rates of SVR12 did not significantly differ between ledipasvir/sofosbuvir and PrOD regimens, including in multivariable and propensity score–adjusted analyses, the researchers reported. Rates of SVR12 also exceeded 90% in subgroups of treatment-experienced and cirrhotic genotype 1 patients, they added. However, rates of SVR12 were lower for nongenotype 1 infections, as has been observed in trials. Specifically, rates of SVR12 were 90% for genotype 4 patients, 86% for genotype 2 patients who received sofosbuvir and ribavirin, and 75% for genotype 3 patients (including 78% for patients given ledipasvir/sofosbuvir plus ribavirin, 87% for patients given sofosbuvir and pegylated interferon plus ribavirin, and 71% for patients given sofosbuvir monotherapy). For cirrhotic patients, rates of SVR12 were 91% for genotype 1, 77% for genotype 2, 66% for genotype 3, and 84% for genotype 4.

The findings confirm that the new interferon-free regimens “can achieve remarkably high SVR rates in real-world clinical practice, especially in genotype 1–infected patients,” the researchers wrote. The cost of these regimens is “the main obstacle to curing HCV” in as many patients as possible, but is expected to “decline dramatically” as the FDA approves new regimens, they noted. “In fact, costs decreased dramatically within the VA after the completion of our study and after the FDA approved elbasvir/grazoprevir in January 2016.”

The study was funded by the Department of Veterans Affairs. The investigators had no disclosures.

Fecal immunochemical testing and colonoscopy detected colorectal cancer (CRC) more effectively and cheaply than did multitarget stool DNA testing, based on a Markov model that assumed equal rates of participation in the three strategies, according to a report in the September issue of Gastroenterology.

Multitarget stool DNA testing (MT-sDNA) “may be a cost-effective alternative if it can achieve patient participation rates that are high enough compared with those of FIT [fecal immunochemical testing] that paying for its higher test cost can be justified,” wrote Uri Ladabaum, MD, and Ajitha Mannalithara, PhD, of Stanford (Calif.) University.

Studies have yielded mixed results about whether FIT or fecal DNA testing are preferable for CRC detection. In one recent large prospective study of patients at average CRC risk, a MT-sDNA test that included KRAS mutations, aberrant NDRG4 and BMP3 methylation, and hemoglobin outperformed FIT for detecting CRC and precancerous lesions but also yielded more false positives, the researchers noted.

Although many decision analyses have examined the efficacy and cost of CRC screening strategies, they have not delved into “the complex patterns of screening participation over time that are now being described (consistent screeners, late entrants, dropouts, intermittent screeners, consistent non-responders),” accounted for variable participation in organized and opportunistic screening programs, or controlled for differential reimbursement rates for public versus private insurance, they added (Gastroenterology 2016 Jun 7. doi: 10.1053/j.gastro.2016.06.003).

Dr. Ladabaum and Dr. Mannalithara therefore constructed a Markov model of patients at average risk for CRC to compare the efficacy and costs of MT-sDNA, colonoscopy, and FIT. The model included numerous variables, such as disease states ranging from a small adenomatous polyp to disseminated CRC, longitudinal changes in rates of participation for both opportunistic screening and organized screening programs, and different rates of commercial and Medicare reimbursement.

Assuming optimal adherence, an annual FIT test and colonoscopy every 10 years were more effective and less costly than MT-sDNA every 3 years, the researchers found. Compared with successful FIT screening programs – which have a 50% rate of consistent participation and a 27% rate of intermittent participation and cost about $153 per patient per testing cycle – an MT-sDNA program would need to have at least a 68% rate of consistent participation and a 32% rate of intermittent (every 3 years) participation, or would need to cost 60% less than it does now ($260 for commercial payment and $197 for Medicare payment in 2015) to be preferable when assuming a threshold of $100,000 for every extra quality-adjusted life year (QALY) gained. MT-sDNA every 3 years, however, would be more cost-effective than opportunistic FIT screening if participation rates were more than 1.7 times those that are typical of opportunistic FIT (15% consistent participation and 30% intermittent participation).

These results held up in various subgroup analyses, and FIT was preferred in 99% of iterations in a Monte Carlo simulation that assumed equal participation rates and the same $100,000 per QALY threshold. “For the MT-sDNA test to be cost-effective, the patient support program included in its cost would need to achieve substantially higher participation rates than those of FIT, whether in organized programs or under the opportunistic screening setting more common in the U.S. than in the rest of the world,” they concluded.

The study was funded by an unrestricted research grant from Exact Science Corp. Dr. Ladabaum reported consulting for ESC in 2014 and disclosed current consulting or advisory relationships with Given Imaging and Mauna Kea Technologies. Dr. Mannalithara had no disclosures.

Fecal immunochemical testing and colonoscopy detected colorectal cancer (CRC) more effectively and cheaply than did multitarget stool DNA testing, based on a Markov model that assumed equal rates of participation in the three strategies, according to a report in the September issue of Gastroenterology.

Multitarget stool DNA testing (MT-sDNA) “may be a cost-effective alternative if it can achieve patient participation rates that are high enough compared with those of FIT [fecal immunochemical testing] that paying for its higher test cost can be justified,” wrote Uri Ladabaum, MD, and Ajitha Mannalithara, PhD, of Stanford (Calif.) University.

Studies have yielded mixed results about whether FIT or fecal DNA testing are preferable for CRC detection. In one recent large prospective study of patients at average CRC risk, a MT-sDNA test that included KRAS mutations, aberrant NDRG4 and BMP3 methylation, and hemoglobin outperformed FIT for detecting CRC and precancerous lesions but also yielded more false positives, the researchers noted.

Although many decision analyses have examined the efficacy and cost of CRC screening strategies, they have not delved into “the complex patterns of screening participation over time that are now being described (consistent screeners, late entrants, dropouts, intermittent screeners, consistent non-responders),” accounted for variable participation in organized and opportunistic screening programs, or controlled for differential reimbursement rates for public versus private insurance, they added (Gastroenterology 2016 Jun 7. doi: 10.1053/j.gastro.2016.06.003).

Dr. Ladabaum and Dr. Mannalithara therefore constructed a Markov model of patients at average risk for CRC to compare the efficacy and costs of MT-sDNA, colonoscopy, and FIT. The model included numerous variables, such as disease states ranging from a small adenomatous polyp to disseminated CRC, longitudinal changes in rates of participation for both opportunistic screening and organized screening programs, and different rates of commercial and Medicare reimbursement.

Assuming optimal adherence, an annual FIT test and colonoscopy every 10 years were more effective and less costly than MT-sDNA every 3 years, the researchers found. Compared with successful FIT screening programs – which have a 50% rate of consistent participation and a 27% rate of intermittent participation and cost about $153 per patient per testing cycle – an MT-sDNA program would need to have at least a 68% rate of consistent participation and a 32% rate of intermittent (every 3 years) participation, or would need to cost 60% less than it does now ($260 for commercial payment and $197 for Medicare payment in 2015) to be preferable when assuming a threshold of $100,000 for every extra quality-adjusted life year (QALY) gained. MT-sDNA every 3 years, however, would be more cost-effective than opportunistic FIT screening if participation rates were more than 1.7 times those that are typical of opportunistic FIT (15% consistent participation and 30% intermittent participation).

These results held up in various subgroup analyses, and FIT was preferred in 99% of iterations in a Monte Carlo simulation that assumed equal participation rates and the same $100,000 per QALY threshold. “For the MT-sDNA test to be cost-effective, the patient support program included in its cost would need to achieve substantially higher participation rates than those of FIT, whether in organized programs or under the opportunistic screening setting more common in the U.S. than in the rest of the world,” they concluded.

The study was funded by an unrestricted research grant from Exact Science Corp. Dr. Ladabaum reported consulting for ESC in 2014 and disclosed current consulting or advisory relationships with Given Imaging and Mauna Kea Technologies. Dr. Mannalithara had no disclosures.

Fecal immunochemical testing and colonoscopy detected colorectal cancer (CRC) more effectively and cheaply than did multitarget stool DNA testing, based on a Markov model that assumed equal rates of participation in the three strategies, according to a report in the September issue of Gastroenterology.

Multitarget stool DNA testing (MT-sDNA) “may be a cost-effective alternative if it can achieve patient participation rates that are high enough compared with those of FIT [fecal immunochemical testing] that paying for its higher test cost can be justified,” wrote Uri Ladabaum, MD, and Ajitha Mannalithara, PhD, of Stanford (Calif.) University.

Studies have yielded mixed results about whether FIT or fecal DNA testing are preferable for CRC detection. In one recent large prospective study of patients at average CRC risk, a MT-sDNA test that included KRAS mutations, aberrant NDRG4 and BMP3 methylation, and hemoglobin outperformed FIT for detecting CRC and precancerous lesions but also yielded more false positives, the researchers noted.

Although many decision analyses have examined the efficacy and cost of CRC screening strategies, they have not delved into “the complex patterns of screening participation over time that are now being described (consistent screeners, late entrants, dropouts, intermittent screeners, consistent non-responders),” accounted for variable participation in organized and opportunistic screening programs, or controlled for differential reimbursement rates for public versus private insurance, they added (Gastroenterology 2016 Jun 7. doi: 10.1053/j.gastro.2016.06.003).

Dr. Ladabaum and Dr. Mannalithara therefore constructed a Markov model of patients at average risk for CRC to compare the efficacy and costs of MT-sDNA, colonoscopy, and FIT. The model included numerous variables, such as disease states ranging from a small adenomatous polyp to disseminated CRC, longitudinal changes in rates of participation for both opportunistic screening and organized screening programs, and different rates of commercial and Medicare reimbursement.

Assuming optimal adherence, an annual FIT test and colonoscopy every 10 years were more effective and less costly than MT-sDNA every 3 years, the researchers found. Compared with successful FIT screening programs – which have a 50% rate of consistent participation and a 27% rate of intermittent participation and cost about $153 per patient per testing cycle – an MT-sDNA program would need to have at least a 68% rate of consistent participation and a 32% rate of intermittent (every 3 years) participation, or would need to cost 60% less than it does now ($260 for commercial payment and $197 for Medicare payment in 2015) to be preferable when assuming a threshold of $100,000 for every extra quality-adjusted life year (QALY) gained. MT-sDNA every 3 years, however, would be more cost-effective than opportunistic FIT screening if participation rates were more than 1.7 times those that are typical of opportunistic FIT (15% consistent participation and 30% intermittent participation).

These results held up in various subgroup analyses, and FIT was preferred in 99% of iterations in a Monte Carlo simulation that assumed equal participation rates and the same $100,000 per QALY threshold. “For the MT-sDNA test to be cost-effective, the patient support program included in its cost would need to achieve substantially higher participation rates than those of FIT, whether in organized programs or under the opportunistic screening setting more common in the U.S. than in the rest of the world,” they concluded.

The study was funded by an unrestricted research grant from Exact Science Corp. Dr. Ladabaum reported consulting for ESC in 2014 and disclosed current consulting or advisory relationships with Given Imaging and Mauna Kea Technologies. Dr. Mannalithara had no disclosures.

Targeted and regular outpatient care before conception helped prevent relapse of inflammatory bowel disease (IBD) during pregnancy, according to a single-center prospective observational study reported in the September issue of Clinical Gastroenterology and Hepatology.

Women who received such care had about 50% lower odds of relapse while pregnant compared with women seen only after conception, said Alison de Lima, MD, PhD, of Erasmus MC–University Medical Hospital Rotterdam (the Netherlands) and her associates. “Preconception care seems effective in achieving desirable behavioral modifications in IBD women in terms of folic acid intake, smoking cessation, and correct IBD medication adherence, eventually reducing disease relapse during pregnancy. Most importantly, preconception care positively influences birth outcomes,” the investigators concluded.

©varaphoto/Thinkstock

Several recent studies have reported “incorrect beliefs, unfounded fears, and insufficient knowledge” among women with IBD when it comes to pregnancy, the researchers noted. These beliefs can undermine medication adherence, potentially increasing the risk of complications and poor birth outcomes, they added. Studies have confirmed the value of preconception care for chronic diseases such as diabetes, but none had done so for IBD (Clin Gastroenterol Hepatol. 2016 Mar 18. doi: 10.1016/j.cgh.2016.03.018). Therefore, Dr. de Lima and her associates prospectively followed 317 women seen at the IBD preconception outpatient clinic at a tertiary referral hospital during 2008-2014. A total of 155 patients first visited the clinic before becoming pregnant, while the other 162 patients did so only after conception. New patient visits lasted about 30-45 minutes and included fecal calprotectin testing to assess disease activity, education about the need to avoid conceiving during a disease flare, and general advice about taking folic acid, quitting smoking, and avoiding alcohol during pregnancy. Follow-up visits, which occurred every 3 months before pregnancy and every 2 months thereafter, included clinical assessments of disease activity, maternal serum testing to assess compliance with antitumor necrosis factor and thiopurine therapy, and assessments of folic acid supplementation, smoking, and alcohol use.

Patients who received such care before conceiving tended to be younger (29.7 vs. 31.4 years; P = .001), were more often nulliparous (76% vs. 51%; P = .0001), and had a shorter history of IBD (5.1 vs. 8 years; P = .0001), compared with the postconception care group, the researchers said. However, after researchers controlled for parity, disease duration, and the number of relapses in the year before pregnancy, the preconception care group had a nearly sixfold greater odds of adhering to IBD medications during pregnancy (adjusted odds ratio, 5.7; 95% confidence interval, 1.9-17.3), about a fivefold greater odds of sufficient folic acid intake (aOR, 5.3; 95% CI, 2.7-10.3), and a more than fourfold odds of smoking cessation during pregnancy (aOR, 4.63; 95% CI, 1.2-17.6). Notably, preconception care was tied to a 49% lower odds of disease relapse during pregnancy (aOR, 0.51; 95% CI; 0.28-0.95) and to a nearly 50% lower rate of low birth weight (birth weight less than 2,500 g).

“To our surprise, this study did not detect an effect of preconception care on periconceptional disease activity,” the researchers said – even though they strove to educate patients on this concept. “We can only speculate about the explanation for this finding, but we believe this could be a result of a discrepancy between physician-declared disease remission and the patient’s own feeling of well-being combined with a strong reproductive desire.”

The investigators reported no funding sources, and Dr. de Lima had no disclosures. Two coinvestigators reported ties to Merck Sharp & Dohme, Abbott, Shire, and Ferring.

Targeted and regular outpatient care before conception helped prevent relapse of inflammatory bowel disease (IBD) during pregnancy, according to a single-center prospective observational study reported in the September issue of Clinical Gastroenterology and Hepatology.

Women who received such care had about 50% lower odds of relapse while pregnant compared with women seen only after conception, said Alison de Lima, MD, PhD, of Erasmus MC–University Medical Hospital Rotterdam (the Netherlands) and her associates. “Preconception care seems effective in achieving desirable behavioral modifications in IBD women in terms of folic acid intake, smoking cessation, and correct IBD medication adherence, eventually reducing disease relapse during pregnancy. Most importantly, preconception care positively influences birth outcomes,” the investigators concluded.

©varaphoto/Thinkstock

Several recent studies have reported “incorrect beliefs, unfounded fears, and insufficient knowledge” among women with IBD when it comes to pregnancy, the researchers noted. These beliefs can undermine medication adherence, potentially increasing the risk of complications and poor birth outcomes, they added. Studies have confirmed the value of preconception care for chronic diseases such as diabetes, but none had done so for IBD (Clin Gastroenterol Hepatol. 2016 Mar 18. doi: 10.1016/j.cgh.2016.03.018). Therefore, Dr. de Lima and her associates prospectively followed 317 women seen at the IBD preconception outpatient clinic at a tertiary referral hospital during 2008-2014. A total of 155 patients first visited the clinic before becoming pregnant, while the other 162 patients did so only after conception. New patient visits lasted about 30-45 minutes and included fecal calprotectin testing to assess disease activity, education about the need to avoid conceiving during a disease flare, and general advice about taking folic acid, quitting smoking, and avoiding alcohol during pregnancy. Follow-up visits, which occurred every 3 months before pregnancy and every 2 months thereafter, included clinical assessments of disease activity, maternal serum testing to assess compliance with antitumor necrosis factor and thiopurine therapy, and assessments of folic acid supplementation, smoking, and alcohol use.

Patients who received such care before conceiving tended to be younger (29.7 vs. 31.4 years; P = .001), were more often nulliparous (76% vs. 51%; P = .0001), and had a shorter history of IBD (5.1 vs. 8 years; P = .0001), compared with the postconception care group, the researchers said. However, after researchers controlled for parity, disease duration, and the number of relapses in the year before pregnancy, the preconception care group had a nearly sixfold greater odds of adhering to IBD medications during pregnancy (adjusted odds ratio, 5.7; 95% confidence interval, 1.9-17.3), about a fivefold greater odds of sufficient folic acid intake (aOR, 5.3; 95% CI, 2.7-10.3), and a more than fourfold odds of smoking cessation during pregnancy (aOR, 4.63; 95% CI, 1.2-17.6). Notably, preconception care was tied to a 49% lower odds of disease relapse during pregnancy (aOR, 0.51; 95% CI; 0.28-0.95) and to a nearly 50% lower rate of low birth weight (birth weight less than 2,500 g).

“To our surprise, this study did not detect an effect of preconception care on periconceptional disease activity,” the researchers said – even though they strove to educate patients on this concept. “We can only speculate about the explanation for this finding, but we believe this could be a result of a discrepancy between physician-declared disease remission and the patient’s own feeling of well-being combined with a strong reproductive desire.”

The investigators reported no funding sources, and Dr. de Lima had no disclosures. Two coinvestigators reported ties to Merck Sharp & Dohme, Abbott, Shire, and Ferring.

Targeted and regular outpatient care before conception helped prevent relapse of inflammatory bowel disease (IBD) during pregnancy, according to a single-center prospective observational study reported in the September issue of Clinical Gastroenterology and Hepatology.

Women who received such care had about 50% lower odds of relapse while pregnant compared with women seen only after conception, said Alison de Lima, MD, PhD, of Erasmus MC–University Medical Hospital Rotterdam (the Netherlands) and her associates. “Preconception care seems effective in achieving desirable behavioral modifications in IBD women in terms of folic acid intake, smoking cessation, and correct IBD medication adherence, eventually reducing disease relapse during pregnancy. Most importantly, preconception care positively influences birth outcomes,” the investigators concluded.

©varaphoto/Thinkstock

Several recent studies have reported “incorrect beliefs, unfounded fears, and insufficient knowledge” among women with IBD when it comes to pregnancy, the researchers noted. These beliefs can undermine medication adherence, potentially increasing the risk of complications and poor birth outcomes, they added. Studies have confirmed the value of preconception care for chronic diseases such as diabetes, but none had done so for IBD (Clin Gastroenterol Hepatol. 2016 Mar 18. doi: 10.1016/j.cgh.2016.03.018). Therefore, Dr. de Lima and her associates prospectively followed 317 women seen at the IBD preconception outpatient clinic at a tertiary referral hospital during 2008-2014. A total of 155 patients first visited the clinic before becoming pregnant, while the other 162 patients did so only after conception. New patient visits lasted about 30-45 minutes and included fecal calprotectin testing to assess disease activity, education about the need to avoid conceiving during a disease flare, and general advice about taking folic acid, quitting smoking, and avoiding alcohol during pregnancy. Follow-up visits, which occurred every 3 months before pregnancy and every 2 months thereafter, included clinical assessments of disease activity, maternal serum testing to assess compliance with antitumor necrosis factor and thiopurine therapy, and assessments of folic acid supplementation, smoking, and alcohol use.

Patients who received such care before conceiving tended to be younger (29.7 vs. 31.4 years; P = .001), were more often nulliparous (76% vs. 51%; P = .0001), and had a shorter history of IBD (5.1 vs. 8 years; P = .0001), compared with the postconception care group, the researchers said. However, after researchers controlled for parity, disease duration, and the number of relapses in the year before pregnancy, the preconception care group had a nearly sixfold greater odds of adhering to IBD medications during pregnancy (adjusted odds ratio, 5.7; 95% confidence interval, 1.9-17.3), about a fivefold greater odds of sufficient folic acid intake (aOR, 5.3; 95% CI, 2.7-10.3), and a more than fourfold odds of smoking cessation during pregnancy (aOR, 4.63; 95% CI, 1.2-17.6). Notably, preconception care was tied to a 49% lower odds of disease relapse during pregnancy (aOR, 0.51; 95% CI; 0.28-0.95) and to a nearly 50% lower rate of low birth weight (birth weight less than 2,500 g).

“To our surprise, this study did not detect an effect of preconception care on periconceptional disease activity,” the researchers said – even though they strove to educate patients on this concept. “We can only speculate about the explanation for this finding, but we believe this could be a result of a discrepancy between physician-declared disease remission and the patient’s own feeling of well-being combined with a strong reproductive desire.”

The investigators reported no funding sources, and Dr. de Lima had no disclosures. Two coinvestigators reported ties to Merck Sharp & Dohme, Abbott, Shire, and Ferring.

The factor Xa antidote andexanet achieved effective hemostasis 12 hours after infusion in 79% of patients who had developed serious acute bleeding on factor Xa inhibitor therapy, according to a preliminary analysis of an ongoing study of how reducing anti–factor Xa activity affects clinical hemostatic outcomes.

“The site of bleeding was most often gastrointestinal or intracranial; anti–factor Xa activity was considerably elevated in most patients and, as such, was likely to be a major impediment to clinical hemostasis. The administration of an andexanet bolus and infusion resulted in rapid and substantial reversal of anti–factor Xa activity,” Stuart Connolly, MD, of McMaster University, Hamilton, Ont., and his associates reported at the ESC Congress and in a simultaneously published study (N Engl J Med. 2016 Aug 30. doi: 10.1056/NEJMoa1607887).

Andexanet alfa is a recombinant modified human factor Xa decoy protein that “sharply” reduced plasma levels of unbound factor Xa inhibitors as well as anti-factor Xa activity in healthy older volunteers receiving apixaban or rivaroxaban, the researchers noted. Based on those findings, they designed a prospective, multicenter, single-group, open-label study (Andexanet Alfa, a Novel Antidote to the Anticoagulation Effects of FXA Inhibitors; ANNEXA-4) of andexanet in patients with potentially life-threatening acute major bleeding related to anticoagulation with a factor Xa inhibitor.

This interim report from the ongoing study included 67 patients with data available by June 17, 2016. Participants averaged 77 years of age and were receiving a factor Xa inhibtor because of atrial fibrillation, venous thromboembolism, or both. All patients received a bolus of andexanet for 15 to 30 minutes followed by a 2-hour infusion. Based on previous studies, the researchers used a 400-mg bolus of andexanet followed by a 480-mg infusion when patients had last taken their factor Xa inhibitor more than 7 hours before, and a higher 800-mg bolus followed by a 960-mg infusion when patients had taken their anticoagulant more recently. Bleeding and hemostasis were evaluated based on serial CT or MRI scans of patients with intracranial hemorrhage and corrected hemoglobin and hematocrit levels at 12 hours for patients with gastrointestinal and other nonvisible bleeding.

Among 47 patients in the primary efficacy analysis, 37 (79%) achieved excellent or good hemostasis (95% confidence interval, 64% to 89%), including 81% of patients on rivaroxaban and 75% of patients on enoxaparin, the researchers reported. “The rates of excellent or good efficacy were 84% for gastrointestinal bleeding and 80% for intracranial bleeding, rates that were consistent for other subgroups that were examined,” they said. Among the five patients (10%) with the most residual anti–factor Xa activity, all had received the lower andexanet dose. Four had received rivaroxaban while one had received apixaban.

The safety population included all 67 patients, none of whom developed infusion reactions or antibodies to factors X, Xa, or andexanet. After 30 days of follow-up, 12 patients (18%) had experienced one or more thrombotic events, including deep vein thrombosis (seven patients), stroke (five patients), myocardial infarction (one patient), and pulmonary embolism (one patient). One-third of these events occurred within 3 days of receiving andexanet, while the rest occurred by day 30. A total of 10 patients (15%) died, and six deaths were from cardiovascular causes. “A controlled study would be required to assess whether the frequency of these events exceeded that expected in patients at increased risk for thrombotic events,” the researchers commented.

Portola Pharmaceuticals makes andexanet alfa and funded the study. Dr. Connolly disclosed ties to Bayer, Bristol-Myers Squibb/Pfizer, Daiichi-Sankyo, CSL Behring, Octapharma, and Boehringer Ingelheim outside the submitted work.

The factor Xa antidote andexanet achieved effective hemostasis 12 hours after infusion in 79% of patients who had developed serious acute bleeding on factor Xa inhibitor therapy, according to a preliminary analysis of an ongoing study of how reducing anti–factor Xa activity affects clinical hemostatic outcomes.

“The site of bleeding was most often gastrointestinal or intracranial; anti–factor Xa activity was considerably elevated in most patients and, as such, was likely to be a major impediment to clinical hemostasis. The administration of an andexanet bolus and infusion resulted in rapid and substantial reversal of anti–factor Xa activity,” Stuart Connolly, MD, of McMaster University, Hamilton, Ont., and his associates reported at the ESC Congress and in a simultaneously published study (N Engl J Med. 2016 Aug 30. doi: 10.1056/NEJMoa1607887).

Andexanet alfa is a recombinant modified human factor Xa decoy protein that “sharply” reduced plasma levels of unbound factor Xa inhibitors as well as anti-factor Xa activity in healthy older volunteers receiving apixaban or rivaroxaban, the researchers noted. Based on those findings, they designed a prospective, multicenter, single-group, open-label study (Andexanet Alfa, a Novel Antidote to the Anticoagulation Effects of FXA Inhibitors; ANNEXA-4) of andexanet in patients with potentially life-threatening acute major bleeding related to anticoagulation with a factor Xa inhibitor.

This interim report from the ongoing study included 67 patients with data available by June 17, 2016. Participants averaged 77 years of age and were receiving a factor Xa inhibtor because of atrial fibrillation, venous thromboembolism, or both. All patients received a bolus of andexanet for 15 to 30 minutes followed by a 2-hour infusion. Based on previous studies, the researchers used a 400-mg bolus of andexanet followed by a 480-mg infusion when patients had last taken their factor Xa inhibitor more than 7 hours before, and a higher 800-mg bolus followed by a 960-mg infusion when patients had taken their anticoagulant more recently. Bleeding and hemostasis were evaluated based on serial CT or MRI scans of patients with intracranial hemorrhage and corrected hemoglobin and hematocrit levels at 12 hours for patients with gastrointestinal and other nonvisible bleeding.

Among 47 patients in the primary efficacy analysis, 37 (79%) achieved excellent or good hemostasis (95% confidence interval, 64% to 89%), including 81% of patients on rivaroxaban and 75% of patients on enoxaparin, the researchers reported. “The rates of excellent or good efficacy were 84% for gastrointestinal bleeding and 80% for intracranial bleeding, rates that were consistent for other subgroups that were examined,” they said. Among the five patients (10%) with the most residual anti–factor Xa activity, all had received the lower andexanet dose. Four had received rivaroxaban while one had received apixaban.

The safety population included all 67 patients, none of whom developed infusion reactions or antibodies to factors X, Xa, or andexanet. After 30 days of follow-up, 12 patients (18%) had experienced one or more thrombotic events, including deep vein thrombosis (seven patients), stroke (five patients), myocardial infarction (one patient), and pulmonary embolism (one patient). One-third of these events occurred within 3 days of receiving andexanet, while the rest occurred by day 30. A total of 10 patients (15%) died, and six deaths were from cardiovascular causes. “A controlled study would be required to assess whether the frequency of these events exceeded that expected in patients at increased risk for thrombotic events,” the researchers commented.

Portola Pharmaceuticals makes andexanet alfa and funded the study. Dr. Connolly disclosed ties to Bayer, Bristol-Myers Squibb/Pfizer, Daiichi-Sankyo, CSL Behring, Octapharma, and Boehringer Ingelheim outside the submitted work.

The factor Xa antidote andexanet achieved effective hemostasis 12 hours after infusion in 79% of patients who had developed serious acute bleeding on factor Xa inhibitor therapy, according to a preliminary analysis of an ongoing study of how reducing anti–factor Xa activity affects clinical hemostatic outcomes.

“The site of bleeding was most often gastrointestinal or intracranial; anti–factor Xa activity was considerably elevated in most patients and, as such, was likely to be a major impediment to clinical hemostasis. The administration of an andexanet bolus and infusion resulted in rapid and substantial reversal of anti–factor Xa activity,” Stuart Connolly, MD, of McMaster University, Hamilton, Ont., and his associates reported at the ESC Congress and in a simultaneously published study (N Engl J Med. 2016 Aug 30. doi: 10.1056/NEJMoa1607887).

Andexanet alfa is a recombinant modified human factor Xa decoy protein that “sharply” reduced plasma levels of unbound factor Xa inhibitors as well as anti-factor Xa activity in healthy older volunteers receiving apixaban or rivaroxaban, the researchers noted. Based on those findings, they designed a prospective, multicenter, single-group, open-label study (Andexanet Alfa, a Novel Antidote to the Anticoagulation Effects of FXA Inhibitors; ANNEXA-4) of andexanet in patients with potentially life-threatening acute major bleeding related to anticoagulation with a factor Xa inhibitor.

This interim report from the ongoing study included 67 patients with data available by June 17, 2016. Participants averaged 77 years of age and were receiving a factor Xa inhibtor because of atrial fibrillation, venous thromboembolism, or both. All patients received a bolus of andexanet for 15 to 30 minutes followed by a 2-hour infusion. Based on previous studies, the researchers used a 400-mg bolus of andexanet followed by a 480-mg infusion when patients had last taken their factor Xa inhibitor more than 7 hours before, and a higher 800-mg bolus followed by a 960-mg infusion when patients had taken their anticoagulant more recently. Bleeding and hemostasis were evaluated based on serial CT or MRI scans of patients with intracranial hemorrhage and corrected hemoglobin and hematocrit levels at 12 hours for patients with gastrointestinal and other nonvisible bleeding.

Among 47 patients in the primary efficacy analysis, 37 (79%) achieved excellent or good hemostasis (95% confidence interval, 64% to 89%), including 81% of patients on rivaroxaban and 75% of patients on enoxaparin, the researchers reported. “The rates of excellent or good efficacy were 84% for gastrointestinal bleeding and 80% for intracranial bleeding, rates that were consistent for other subgroups that were examined,” they said. Among the five patients (10%) with the most residual anti–factor Xa activity, all had received the lower andexanet dose. Four had received rivaroxaban while one had received apixaban.

The safety population included all 67 patients, none of whom developed infusion reactions or antibodies to factors X, Xa, or andexanet. After 30 days of follow-up, 12 patients (18%) had experienced one or more thrombotic events, including deep vein thrombosis (seven patients), stroke (five patients), myocardial infarction (one patient), and pulmonary embolism (one patient). One-third of these events occurred within 3 days of receiving andexanet, while the rest occurred by day 30. A total of 10 patients (15%) died, and six deaths were from cardiovascular causes. “A controlled study would be required to assess whether the frequency of these events exceeded that expected in patients at increased risk for thrombotic events,” the researchers commented.

Portola Pharmaceuticals makes andexanet alfa and funded the study. Dr. Connolly disclosed ties to Bayer, Bristol-Myers Squibb/Pfizer, Daiichi-Sankyo, CSL Behring, Octapharma, and Boehringer Ingelheim outside the submitted work.

Extramedullary disease is common in newly diagnosed acute myeloid leukemia, and frequently occurs in at least two sites, but is not an independent prognostic factor for overall survival, according to an analysis of 11 clinical trials.

“Importantly, the presence of extramedullary disease should not affect the choice of post-remission therapy,” concluded Dr. Chezi Ganzel of Shaare Zedek Medical Center, Jerusalem, Israel, together with his associates on behalf of the ECOG-ACRIN Cancer Research Group.

Extramedullary disease was found in anywhere from 2% to 30% of AML patients in past studies, and its prognostic impact was “unfavorable in some reports, but not in others,” the investigators noted. To help clarify the issue, they studied patients aged 15 years and up with newly diagnosed AML from 11 clinical trials conducted between 1980 and 2008. The initial study population included 3,522 patients, of which 282 were excluded for having promyelocytic leukemia (168 patients), leukemia that was not AML (29 patieints), no baseline assessment of extramedullary disease (41 patients), no survival data (20 patients), or no eligibility for retrospective central review (24 patients). That left 3,240 patients, of whom 769 (24%) had extramedullary disease. The most commonly involved sites included the lymph nodes (about 12% of patients), spleen (7%), liver (5%), skin (5%), and gingiva (4%). Only 1% of patients had detectable central nervous system involvement. Most (65%) of patients had one site of extramedullary disease, while 21% had two sites, and the rest had more extensive involvement (J Clin Oncol. 2016 Aug 29. doi: 10.1200/JCO.2016.67.1305).

Rates of complete remission were 59.7% overall, 59% among patients with extramedullary disease, and 60% among patients without extramedullary disease, the investigators said. Just as the presence of extramedullary disease did not significantly affect the likelihood of complete remission, nor did any specific site of extramedullary disease, although there was a non-significant trend toward lower rates of complete remission among patients with splenic or gingival involvement.

The median overall survival for the cohort was 1 year. Univariate analyses linked the presence of any extramedullary disease (P = .005) and involvement of the skin (P = .002), spleen (P less than .001), and liver (P less than .001) with shorter overall survival. However, none of these relationships held up in a multivariable analysis that accounted for other significant prognostic factors, including earlier year of registration, older age, high white blood cell count, low platelet count, poor performance status, high cytogenetic risk status, and not achieving a complete remission, said the researchers.“It is possible that individual sites of extramedullary disease are, in fact, associated with poorer prognosis [but that] these patients also have other unfavorable prognostic factors, such as high white blood cell count and unfavorable cytogenetics,” the researchers commented.

Based on this large study, treatment decisions “should be made on the basis of recognized AML prognostic factors, irrespective of the presence of extramedullary disease,” they concluded.

The National Institutes of Health supported the work. Dr. Ganzel had no disclosures.

Extramedullary disease is common in newly diagnosed acute myeloid leukemia, and frequently occurs in at least two sites, but is not an independent prognostic factor for overall survival, according to an analysis of 11 clinical trials.

“Importantly, the presence of extramedullary disease should not affect the choice of post-remission therapy,” concluded Dr. Chezi Ganzel of Shaare Zedek Medical Center, Jerusalem, Israel, together with his associates on behalf of the ECOG-ACRIN Cancer Research Group.

Extramedullary disease was found in anywhere from 2% to 30% of AML patients in past studies, and its prognostic impact was “unfavorable in some reports, but not in others,” the investigators noted. To help clarify the issue, they studied patients aged 15 years and up with newly diagnosed AML from 11 clinical trials conducted between 1980 and 2008. The initial study population included 3,522 patients, of which 282 were excluded for having promyelocytic leukemia (168 patients), leukemia that was not AML (29 patieints), no baseline assessment of extramedullary disease (41 patients), no survival data (20 patients), or no eligibility for retrospective central review (24 patients). That left 3,240 patients, of whom 769 (24%) had extramedullary disease. The most commonly involved sites included the lymph nodes (about 12% of patients), spleen (7%), liver (5%), skin (5%), and gingiva (4%). Only 1% of patients had detectable central nervous system involvement. Most (65%) of patients had one site of extramedullary disease, while 21% had two sites, and the rest had more extensive involvement (J Clin Oncol. 2016 Aug 29. doi: 10.1200/JCO.2016.67.1305).

Rates of complete remission were 59.7% overall, 59% among patients with extramedullary disease, and 60% among patients without extramedullary disease, the investigators said. Just as the presence of extramedullary disease did not significantly affect the likelihood of complete remission, nor did any specific site of extramedullary disease, although there was a non-significant trend toward lower rates of complete remission among patients with splenic or gingival involvement.

The median overall survival for the cohort was 1 year. Univariate analyses linked the presence of any extramedullary disease (P = .005) and involvement of the skin (P = .002), spleen (P less than .001), and liver (P less than .001) with shorter overall survival. However, none of these relationships held up in a multivariable analysis that accounted for other significant prognostic factors, including earlier year of registration, older age, high white blood cell count, low platelet count, poor performance status, high cytogenetic risk status, and not achieving a complete remission, said the researchers.“It is possible that individual sites of extramedullary disease are, in fact, associated with poorer prognosis [but that] these patients also have other unfavorable prognostic factors, such as high white blood cell count and unfavorable cytogenetics,” the researchers commented.

Based on this large study, treatment decisions “should be made on the basis of recognized AML prognostic factors, irrespective of the presence of extramedullary disease,” they concluded.

The National Institutes of Health supported the work. Dr. Ganzel had no disclosures.

Extramedullary disease is common in newly diagnosed acute myeloid leukemia, and frequently occurs in at least two sites, but is not an independent prognostic factor for overall survival, according to an analysis of 11 clinical trials.

“Importantly, the presence of extramedullary disease should not affect the choice of post-remission therapy,” concluded Dr. Chezi Ganzel of Shaare Zedek Medical Center, Jerusalem, Israel, together with his associates on behalf of the ECOG-ACRIN Cancer Research Group.

Extramedullary disease was found in anywhere from 2% to 30% of AML patients in past studies, and its prognostic impact was “unfavorable in some reports, but not in others,” the investigators noted. To help clarify the issue, they studied patients aged 15 years and up with newly diagnosed AML from 11 clinical trials conducted between 1980 and 2008. The initial study population included 3,522 patients, of which 282 were excluded for having promyelocytic leukemia (168 patients), leukemia that was not AML (29 patieints), no baseline assessment of extramedullary disease (41 patients), no survival data (20 patients), or no eligibility for retrospective central review (24 patients). That left 3,240 patients, of whom 769 (24%) had extramedullary disease. The most commonly involved sites included the lymph nodes (about 12% of patients), spleen (7%), liver (5%), skin (5%), and gingiva (4%). Only 1% of patients had detectable central nervous system involvement. Most (65%) of patients had one site of extramedullary disease, while 21% had two sites, and the rest had more extensive involvement (J Clin Oncol. 2016 Aug 29. doi: 10.1200/JCO.2016.67.1305).

Rates of complete remission were 59.7% overall, 59% among patients with extramedullary disease, and 60% among patients without extramedullary disease, the investigators said. Just as the presence of extramedullary disease did not significantly affect the likelihood of complete remission, nor did any specific site of extramedullary disease, although there was a non-significant trend toward lower rates of complete remission among patients with splenic or gingival involvement.

The median overall survival for the cohort was 1 year. Univariate analyses linked the presence of any extramedullary disease (P = .005) and involvement of the skin (P = .002), spleen (P less than .001), and liver (P less than .001) with shorter overall survival. However, none of these relationships held up in a multivariable analysis that accounted for other significant prognostic factors, including earlier year of registration, older age, high white blood cell count, low platelet count, poor performance status, high cytogenetic risk status, and not achieving a complete remission, said the researchers.“It is possible that individual sites of extramedullary disease are, in fact, associated with poorer prognosis [but that] these patients also have other unfavorable prognostic factors, such as high white blood cell count and unfavorable cytogenetics,” the researchers commented.

Based on this large study, treatment decisions “should be made on the basis of recognized AML prognostic factors, irrespective of the presence of extramedullary disease,” they concluded.

The National Institutes of Health supported the work. Dr. Ganzel had no disclosures.

The presence or absence of minimal residual disease predicted progression-free and, to a lesser degree, overall survival among chronic lymphocytic leukemia (CLL) patients who achieved complete or partial remission with six courses of chemoimmunotherapy, based on two randomized phase III trials.

These findings underscore the value of measuring minimal residual disease (MRD) in patients who respond to a defined period of CLL therapy, Dr. Gabor Kovacs of the University of Cologne (Germany) and his associates wrote Aug. 29 in the Journal of Clinical Oncology.

The investigators examined the predictive value of measuring MRD in peripheral blood by using four-color flow cytometry at a threshold of 10^-4 by analyzing data from 554 adult CLL patients who achieved complete or partial remission during two phase III trials – one (CLL8) comparing fludarabine and cyclophosphamide with fludarabine, cyclophosphamide, and rituximab (FCR) and a second (CLL10) comparing FCR with bendamustine plus rituximab (J Clin Oncol. 2016 Aug 29. doi:10.1200/JCO.2016.67.1305).

The median progression-free survival (PFS) after the end of treatment was 61 months for the 34% (186 patients) who attained MRD-negative complete remission (CR), 54 months for the 29% of patients who attained MRD-negative partial remission (PR), 35 months for the 7% of patients who attained MRD-positive CR, and 21 months for the 30% of patients who attained MRD-positive PR. Progression-free survival did not differ significantly between MRD-negative CR and MRD-negative PR patients, but was significantly longer for MRD-negative PR patients than for MRD-positive CR patients (P = .048).

Progression-free survival was even more distinct for MRD-positive CR patients, compared with those who attained MRD-positive PR (P = .002). Overall survival was significantly shorter only when patients had MRD-positive PR rather than MRD-negative CR (72 months vs. not reached, P = .001).

Among the MRD-negative PR patients, 16% had only residual lymphadenopathy, 11% had only bone marrow involvement, 48% had only splenomegaly, and 25% had more than one organ system affected, the researchers noted. Importantly, PFS for MRD-negative PR with residual splenomegaly (63 months) was similar to that for MRD-negative CR (61 months, P = .354).

In contrast, patients with MRD-negative PR and residual lymphadenopathy had shorter PFS than did MRD-negative CR patients (31 months, P = .001). “We hypothesize that residual splenomegaly after chemoimmunotherapy often represents tissue that does not contribute to a subsequent clinical progression,” the researchers commented.

They also noted an important caveat – their findings are only valid for patients who received a defined period of CLL treatment followed by observation (without maintenance), not for patients who are treated indefinitely until progression.

The CLL8 and CLL10 trials were funded by Roche, Mundipharma, and the German Federal Ministry of Education and Research. Dr. Kavocs disclosed support for travel, accommodations, and expenses from Roche and Celgene.

The presence or absence of minimal residual disease predicted progression-free and, to a lesser degree, overall survival among chronic lymphocytic leukemia (CLL) patients who achieved complete or partial remission with six courses of chemoimmunotherapy, based on two randomized phase III trials.

These findings underscore the value of measuring minimal residual disease (MRD) in patients who respond to a defined period of CLL therapy, Dr. Gabor Kovacs of the University of Cologne (Germany) and his associates wrote Aug. 29 in the Journal of Clinical Oncology.

The investigators examined the predictive value of measuring MRD in peripheral blood by using four-color flow cytometry at a threshold of 10^-4 by analyzing data from 554 adult CLL patients who achieved complete or partial remission during two phase III trials – one (CLL8) comparing fludarabine and cyclophosphamide with fludarabine, cyclophosphamide, and rituximab (FCR) and a second (CLL10) comparing FCR with bendamustine plus rituximab (J Clin Oncol. 2016 Aug 29. doi:10.1200/JCO.2016.67.1305).

The median progression-free survival (PFS) after the end of treatment was 61 months for the 34% (186 patients) who attained MRD-negative complete remission (CR), 54 months for the 29% of patients who attained MRD-negative partial remission (PR), 35 months for the 7% of patients who attained MRD-positive CR, and 21 months for the 30% of patients who attained MRD-positive PR. Progression-free survival did not differ significantly between MRD-negative CR and MRD-negative PR patients, but was significantly longer for MRD-negative PR patients than for MRD-positive CR patients (P = .048).

Progression-free survival was even more distinct for MRD-positive CR patients, compared with those who attained MRD-positive PR (P = .002). Overall survival was significantly shorter only when patients had MRD-positive PR rather than MRD-negative CR (72 months vs. not reached, P = .001).

Among the MRD-negative PR patients, 16% had only residual lymphadenopathy, 11% had only bone marrow involvement, 48% had only splenomegaly, and 25% had more than one organ system affected, the researchers noted. Importantly, PFS for MRD-negative PR with residual splenomegaly (63 months) was similar to that for MRD-negative CR (61 months, P = .354).

In contrast, patients with MRD-negative PR and residual lymphadenopathy had shorter PFS than did MRD-negative CR patients (31 months, P = .001). “We hypothesize that residual splenomegaly after chemoimmunotherapy often represents tissue that does not contribute to a subsequent clinical progression,” the researchers commented.

They also noted an important caveat – their findings are only valid for patients who received a defined period of CLL treatment followed by observation (without maintenance), not for patients who are treated indefinitely until progression.

The CLL8 and CLL10 trials were funded by Roche, Mundipharma, and the German Federal Ministry of Education and Research. Dr. Kavocs disclosed support for travel, accommodations, and expenses from Roche and Celgene.

The presence or absence of minimal residual disease predicted progression-free and, to a lesser degree, overall survival among chronic lymphocytic leukemia (CLL) patients who achieved complete or partial remission with six courses of chemoimmunotherapy, based on two randomized phase III trials.

These findings underscore the value of measuring minimal residual disease (MRD) in patients who respond to a defined period of CLL therapy, Dr. Gabor Kovacs of the University of Cologne (Germany) and his associates wrote Aug. 29 in the Journal of Clinical Oncology.

The investigators examined the predictive value of measuring MRD in peripheral blood by using four-color flow cytometry at a threshold of 10^-4 by analyzing data from 554 adult CLL patients who achieved complete or partial remission during two phase III trials – one (CLL8) comparing fludarabine and cyclophosphamide with fludarabine, cyclophosphamide, and rituximab (FCR) and a second (CLL10) comparing FCR with bendamustine plus rituximab (J Clin Oncol. 2016 Aug 29. doi:10.1200/JCO.2016.67.1305).

The median progression-free survival (PFS) after the end of treatment was 61 months for the 34% (186 patients) who attained MRD-negative complete remission (CR), 54 months for the 29% of patients who attained MRD-negative partial remission (PR), 35 months for the 7% of patients who attained MRD-positive CR, and 21 months for the 30% of patients who attained MRD-positive PR. Progression-free survival did not differ significantly between MRD-negative CR and MRD-negative PR patients, but was significantly longer for MRD-negative PR patients than for MRD-positive CR patients (P = .048).

Progression-free survival was even more distinct for MRD-positive CR patients, compared with those who attained MRD-positive PR (P = .002). Overall survival was significantly shorter only when patients had MRD-positive PR rather than MRD-negative CR (72 months vs. not reached, P = .001).

Among the MRD-negative PR patients, 16% had only residual lymphadenopathy, 11% had only bone marrow involvement, 48% had only splenomegaly, and 25% had more than one organ system affected, the researchers noted. Importantly, PFS for MRD-negative PR with residual splenomegaly (63 months) was similar to that for MRD-negative CR (61 months, P = .354).

In contrast, patients with MRD-negative PR and residual lymphadenopathy had shorter PFS than did MRD-negative CR patients (31 months, P = .001). “We hypothesize that residual splenomegaly after chemoimmunotherapy often represents tissue that does not contribute to a subsequent clinical progression,” the researchers commented.

They also noted an important caveat – their findings are only valid for patients who received a defined period of CLL treatment followed by observation (without maintenance), not for patients who are treated indefinitely until progression.

The CLL8 and CLL10 trials were funded by Roche, Mundipharma, and the German Federal Ministry of Education and Research. Dr. Kavocs disclosed support for travel, accommodations, and expenses from Roche and Celgene.

Adults with moderate to severe sleep apnea and coronary or cerebrovascular disease had about the same frequency of cardiovascular events whether they received continuous positive airway pressure (CPAP) therapy or usual care alone, according to a large randomized trial.

But CPAP was used for only 3.3 hours per night by these patients and might have been “insufficient to provide the level of effect on cardiovascular outcomes that had been hypothesized,” Dr. Doug McEvoy of the Adelaide Institute for Sleep Health, Flinders University, Adelaide, Australia and his associates reported at the annual congress of the European Society of Cardiology. Their study was simultaneously published in the New England Journal of Medicine (N Engl J Med. 2016 Aug 28. doi: 10.1056/NEJMoa1606599).

Notably, CPAP did show a trend toward significance in a prespecified subgroup analysis that matched 561 patients who used CPAP for a longer period – more than 4 hours a night – with the same number of controls (hazard ratio, 0.8; 95% CI, 0.6 to 1.1; P = .1). Dr. McEvoy discussed the implications of prolonged CPAP use in a video interview with Bruce Jancin, our reporter at the ESC Congress in Rome.

Obstructive sleep apnea causes episodic hypoxemia, sympathetic nervous system activation; intrathoracic pressure swings strain the heart and great vessels, and increases markers of oxidative stress, hypercoagulation, and inflammation. Randomized trials have linked CPAP therapy to lower systolic blood pressure measures and improved endothelial function and insulin sensitivity. Observational studies suggest that CPAP might help prevent cardiovascular events and death if used consistently, the investigators noted.

Because cardiovascular disease and obstructive sleep apnea often co-occur, the researchers carried out a secondary prevention trial, Sleep Apnea Cardiovascular Endpoints (SAVE), to quantify rates of major cardiovascular events among 2,717 adults aged 45-75 years with obstructive sleep apnea and established coronary or cerebrovascular disease. Patients were randomly assigned to receive CPAP therapy plus usual care, or usual care alone. The primary endpoint was a composite of cardiovascular death, myocardial infarction, stroke, or hospitalization from unstable angina, transient ischemic attack, or heart failure. The researchers also looked at other cardiovascular outcomes, snoring symptoms, mood, daytime sleepiness, and health-related quality of life. They used a 1-week run-in period of sham CPAP (administered at subtherapeutic pressure) to ensure what they considered an adequate level of adherence.

The average apnea-hypopnea index (that is, the average number of apnea or hypopnea events recorded per hour) was 29 at baseline and 3.7 after initiating CPAP, the investigators said. At a mean of 3.7 years of follow-up, 17% of CPAP users (220 patients) and 15.4% of controls had a cardiovascular event, for a hazard ratio of 1.1 (95% confidence interval, 0.9 to 1.3; P = 0.3).

Not only did CPAP fail to meet the composite primary endpoint, but it did not significantly affect any cause-specific cardiovascular outcome, the researchers said. However, CPAP users did improve significantly more than controls on measures of daytime sleepiness (the Epworth Sleepiness Scale), anxiety and depression (Hospital Anxiety and Depression Scale), self-reported physical and mental health (Short-Form Health Survey), and quality of life (European Quality of Life-5 Dimensions questionnaire). They also missed fewer days of work than did controls.

Study funders included the National Health and Medical Research Council of Australia, Respironics Sleep and Respiratory Research Foundation, and Phillips Respironics. Dr. McEvoy reported receiving research equipment for the study from AirLiquide. Several coinvestigators reported other ties to industry.

Adults with moderate to severe sleep apnea and coronary or cerebrovascular disease had about the same frequency of cardiovascular events whether they received continuous positive airway pressure (CPAP) therapy or usual care alone, according to a large randomized trial.

But CPAP was used for only 3.3 hours per night by these patients and might have been “insufficient to provide the level of effect on cardiovascular outcomes that had been hypothesized,” Dr. Doug McEvoy of the Adelaide Institute for Sleep Health, Flinders University, Adelaide, Australia and his associates reported at the annual congress of the European Society of Cardiology. Their study was simultaneously published in the New England Journal of Medicine (N Engl J Med. 2016 Aug 28. doi: 10.1056/NEJMoa1606599).

Notably, CPAP did show a trend toward significance in a prespecified subgroup analysis that matched 561 patients who used CPAP for a longer period – more than 4 hours a night – with the same number of controls (hazard ratio, 0.8; 95% CI, 0.6 to 1.1; P = .1). Dr. McEvoy discussed the implications of prolonged CPAP use in a video interview with Bruce Jancin, our reporter at the ESC Congress in Rome.

Obstructive sleep apnea causes episodic hypoxemia, sympathetic nervous system activation; intrathoracic pressure swings strain the heart and great vessels, and increases markers of oxidative stress, hypercoagulation, and inflammation. Randomized trials have linked CPAP therapy to lower systolic blood pressure measures and improved endothelial function and insulin sensitivity. Observational studies suggest that CPAP might help prevent cardiovascular events and death if used consistently, the investigators noted.

Because cardiovascular disease and obstructive sleep apnea often co-occur, the researchers carried out a secondary prevention trial, Sleep Apnea Cardiovascular Endpoints (SAVE), to quantify rates of major cardiovascular events among 2,717 adults aged 45-75 years with obstructive sleep apnea and established coronary or cerebrovascular disease. Patients were randomly assigned to receive CPAP therapy plus usual care, or usual care alone. The primary endpoint was a composite of cardiovascular death, myocardial infarction, stroke, or hospitalization from unstable angina, transient ischemic attack, or heart failure. The researchers also looked at other cardiovascular outcomes, snoring symptoms, mood, daytime sleepiness, and health-related quality of life. They used a 1-week run-in period of sham CPAP (administered at subtherapeutic pressure) to ensure what they considered an adequate level of adherence.

The average apnea-hypopnea index (that is, the average number of apnea or hypopnea events recorded per hour) was 29 at baseline and 3.7 after initiating CPAP, the investigators said. At a mean of 3.7 years of follow-up, 17% of CPAP users (220 patients) and 15.4% of controls had a cardiovascular event, for a hazard ratio of 1.1 (95% confidence interval, 0.9 to 1.3; P = 0.3).

Not only did CPAP fail to meet the composite primary endpoint, but it did not significantly affect any cause-specific cardiovascular outcome, the researchers said. However, CPAP users did improve significantly more than controls on measures of daytime sleepiness (the Epworth Sleepiness Scale), anxiety and depression (Hospital Anxiety and Depression Scale), self-reported physical and mental health (Short-Form Health Survey), and quality of life (European Quality of Life-5 Dimensions questionnaire). They also missed fewer days of work than did controls.

Study funders included the National Health and Medical Research Council of Australia, Respironics Sleep and Respiratory Research Foundation, and Phillips Respironics. Dr. McEvoy reported receiving research equipment for the study from AirLiquide. Several coinvestigators reported other ties to industry.

Adults with moderate to severe sleep apnea and coronary or cerebrovascular disease had about the same frequency of cardiovascular events whether they received continuous positive airway pressure (CPAP) therapy or usual care alone, according to a large randomized trial.

But CPAP was used for only 3.3 hours per night by these patients and might have been “insufficient to provide the level of effect on cardiovascular outcomes that had been hypothesized,” Dr. Doug McEvoy of the Adelaide Institute for Sleep Health, Flinders University, Adelaide, Australia and his associates reported at the annual congress of the European Society of Cardiology. Their study was simultaneously published in the New England Journal of Medicine (N Engl J Med. 2016 Aug 28. doi: 10.1056/NEJMoa1606599).

Notably, CPAP did show a trend toward significance in a prespecified subgroup analysis that matched 561 patients who used CPAP for a longer period – more than 4 hours a night – with the same number of controls (hazard ratio, 0.8; 95% CI, 0.6 to 1.1; P = .1). Dr. McEvoy discussed the implications of prolonged CPAP use in a video interview with Bruce Jancin, our reporter at the ESC Congress in Rome.

Obstructive sleep apnea causes episodic hypoxemia, sympathetic nervous system activation; intrathoracic pressure swings strain the heart and great vessels, and increases markers of oxidative stress, hypercoagulation, and inflammation. Randomized trials have linked CPAP therapy to lower systolic blood pressure measures and improved endothelial function and insulin sensitivity. Observational studies suggest that CPAP might help prevent cardiovascular events and death if used consistently, the investigators noted.

Because cardiovascular disease and obstructive sleep apnea often co-occur, the researchers carried out a secondary prevention trial, Sleep Apnea Cardiovascular Endpoints (SAVE), to quantify rates of major cardiovascular events among 2,717 adults aged 45-75 years with obstructive sleep apnea and established coronary or cerebrovascular disease. Patients were randomly assigned to receive CPAP therapy plus usual care, or usual care alone. The primary endpoint was a composite of cardiovascular death, myocardial infarction, stroke, or hospitalization from unstable angina, transient ischemic attack, or heart failure. The researchers also looked at other cardiovascular outcomes, snoring symptoms, mood, daytime sleepiness, and health-related quality of life. They used a 1-week run-in period of sham CPAP (administered at subtherapeutic pressure) to ensure what they considered an adequate level of adherence.

The average apnea-hypopnea index (that is, the average number of apnea or hypopnea events recorded per hour) was 29 at baseline and 3.7 after initiating CPAP, the investigators said. At a mean of 3.7 years of follow-up, 17% of CPAP users (220 patients) and 15.4% of controls had a cardiovascular event, for a hazard ratio of 1.1 (95% confidence interval, 0.9 to 1.3; P = 0.3).

Not only did CPAP fail to meet the composite primary endpoint, but it did not significantly affect any cause-specific cardiovascular outcome, the researchers said. However, CPAP users did improve significantly more than controls on measures of daytime sleepiness (the Epworth Sleepiness Scale), anxiety and depression (Hospital Anxiety and Depression Scale), self-reported physical and mental health (Short-Form Health Survey), and quality of life (European Quality of Life-5 Dimensions questionnaire). They also missed fewer days of work than did controls.

Study funders included the National Health and Medical Research Council of Australia, Respironics Sleep and Respiratory Research Foundation, and Phillips Respironics. Dr. McEvoy reported receiving research equipment for the study from AirLiquide. Several coinvestigators reported other ties to industry.

A new classification tool helped guide the treatment of bacteremic patients while clinicians awaited antibiotic resistance results, investigators reported.

The clinical decision tree had a positive predictive value of 91% and a negative predictive value of 92% for determining whether certain gram-negative infections produced extended-spectrum beta-lactamase (ESBL), Catherine Goodman, PhD, of the Johns Hopkins Bloomberg School of Public Health, Baltimore, and her associates wrote online in Clinical Infectious Diseases. “These predictions may assist empiric treatment decisions in order to optimize clinical outcomes while reducing administration of overly broad antibiotic agents that can select for further resistance emergence,” they added.

Bacteria that produce ESBL can hydrolyze all broad-spectrum beta-lactam antibiotics except carbapenems. Rapid tests for beta-lactamase genes can shorten the lag time between gram-stain identification and antimicrobial resistance results, but are cost prohibitive for most clinical laboratories and often do not assess ESBL gene groups, the researchers said. To find a way to predict which infections are characterized by ESBL production, they studied adults hospitalized at Johns Hopkins from October 2008 to March 2015 with bloodstream isolates of Klebsiella pneumoniae (40% of patients), Klebsiella oxytoca (4% of patients), and Escherichia coli (56% of patients). Most bacteremias began as urinary tract infections (34% of cases), followed by intra-abdominal infections (24%), catheter-related infections (16%), and biliary infections (14%) (Clin Infect Dis. 2016 Jul 26. doi:10.1093/cid/ciw425).

A total of 194 patients (15%) had bacteremias that produced ESBL, according to the investigators. Using a technique called binary recursive partitioning, they compared these patients with ESBL-negative patients to create a clinical decision tree based on five yes-or-no questions. The tree first asked if the patient had been colonized or infected with ESBL-producing bacteria within 6 months, and if so, whether the patient currently had an indwelling catheter. Patients meeting both criteria had a 92% chance of being ESBL positive. Patients with a recent history of ESBL but no catheter had an 81% chance of being ESBL positive if they were at least 43 years old, but a 75% chance of being ESBL negative if they were under age 43 years.

Among patients with no recent history of ESBL, the decision tree asked about hospitalization in a country with a high ESBL burden and antibiotic therapy during the past 6 months. Patients responding “yes” to both questions had a 100% chance of being ESBL positive. Patients with only the geographic risk factor had a 63% chance of being ESBL negative, and patients with neither risk factor had a 93% chance of being ESBL negative.

The decision tree detected only half of ESBL cases because there was a subgroup with no recent ESBL history or geographic exposure, the investigators noted. “The poor predictive nature of health care–associated variables within this patient subset may suggest a high proportion of community-acquired ESBL infections. Indeed, although risk factors for ESBLs have traditionally focused on the health care setting, increasing reports describe the community as an important ESBL reservoir,” they added. Nonetheless, of 194 patients with ESBL bacteremia, 35% received empiric carbapenem treatment within 6 hours after identification of the bacterial genus and species, the investigators emphasized. “Utilization of the decision tree would have increased ESBL case detection during the empiric treatment window by approximately 50%.”

The National Institutes of Health funded the study. The researchers reported having no conflicts of interest.

A new classification tool helped guide the treatment of bacteremic patients while clinicians awaited antibiotic resistance results, investigators reported.

The clinical decision tree had a positive predictive value of 91% and a negative predictive value of 92% for determining whether certain gram-negative infections produced extended-spectrum beta-lactamase (ESBL), Catherine Goodman, PhD, of the Johns Hopkins Bloomberg School of Public Health, Baltimore, and her associates wrote online in Clinical Infectious Diseases. “These predictions may assist empiric treatment decisions in order to optimize clinical outcomes while reducing administration of overly broad antibiotic agents that can select for further resistance emergence,” they added.

Bacteria that produce ESBL can hydrolyze all broad-spectrum beta-lactam antibiotics except carbapenems. Rapid tests for beta-lactamase genes can shorten the lag time between gram-stain identification and antimicrobial resistance results, but are cost prohibitive for most clinical laboratories and often do not assess ESBL gene groups, the researchers said. To find a way to predict which infections are characterized by ESBL production, they studied adults hospitalized at Johns Hopkins from October 2008 to March 2015 with bloodstream isolates of Klebsiella pneumoniae (40% of patients), Klebsiella oxytoca (4% of patients), and Escherichia coli (56% of patients). Most bacteremias began as urinary tract infections (34% of cases), followed by intra-abdominal infections (24%), catheter-related infections (16%), and biliary infections (14%) (Clin Infect Dis. 2016 Jul 26. doi:10.1093/cid/ciw425).

A total of 194 patients (15%) had bacteremias that produced ESBL, according to the investigators. Using a technique called binary recursive partitioning, they compared these patients with ESBL-negative patients to create a clinical decision tree based on five yes-or-no questions. The tree first asked if the patient had been colonized or infected with ESBL-producing bacteria within 6 months, and if so, whether the patient currently had an indwelling catheter. Patients meeting both criteria had a 92% chance of being ESBL positive. Patients with a recent history of ESBL but no catheter had an 81% chance of being ESBL positive if they were at least 43 years old, but a 75% chance of being ESBL negative if they were under age 43 years.

Among patients with no recent history of ESBL, the decision tree asked about hospitalization in a country with a high ESBL burden and antibiotic therapy during the past 6 months. Patients responding “yes” to both questions had a 100% chance of being ESBL positive. Patients with only the geographic risk factor had a 63% chance of being ESBL negative, and patients with neither risk factor had a 93% chance of being ESBL negative.

The decision tree detected only half of ESBL cases because there was a subgroup with no recent ESBL history or geographic exposure, the investigators noted. “The poor predictive nature of health care–associated variables within this patient subset may suggest a high proportion of community-acquired ESBL infections. Indeed, although risk factors for ESBLs have traditionally focused on the health care setting, increasing reports describe the community as an important ESBL reservoir,” they added. Nonetheless, of 194 patients with ESBL bacteremia, 35% received empiric carbapenem treatment within 6 hours after identification of the bacterial genus and species, the investigators emphasized. “Utilization of the decision tree would have increased ESBL case detection during the empiric treatment window by approximately 50%.”

The National Institutes of Health funded the study. The researchers reported having no conflicts of interest.

A new classification tool helped guide the treatment of bacteremic patients while clinicians awaited antibiotic resistance results, investigators reported.

The clinical decision tree had a positive predictive value of 91% and a negative predictive value of 92% for determining whether certain gram-negative infections produced extended-spectrum beta-lactamase (ESBL), Catherine Goodman, PhD, of the Johns Hopkins Bloomberg School of Public Health, Baltimore, and her associates wrote online in Clinical Infectious Diseases. “These predictions may assist empiric treatment decisions in order to optimize clinical outcomes while reducing administration of overly broad antibiotic agents that can select for further resistance emergence,” they added.

Bacteria that produce ESBL can hydrolyze all broad-spectrum beta-lactam antibiotics except carbapenems. Rapid tests for beta-lactamase genes can shorten the lag time between gram-stain identification and antimicrobial resistance results, but are cost prohibitive for most clinical laboratories and often do not assess ESBL gene groups, the researchers said. To find a way to predict which infections are characterized by ESBL production, they studied adults hospitalized at Johns Hopkins from October 2008 to March 2015 with bloodstream isolates of Klebsiella pneumoniae (40% of patients), Klebsiella oxytoca (4% of patients), and Escherichia coli (56% of patients). Most bacteremias began as urinary tract infections (34% of cases), followed by intra-abdominal infections (24%), catheter-related infections (16%), and biliary infections (14%) (Clin Infect Dis. 2016 Jul 26. doi:10.1093/cid/ciw425).

A total of 194 patients (15%) had bacteremias that produced ESBL, according to the investigators. Using a technique called binary recursive partitioning, they compared these patients with ESBL-negative patients to create a clinical decision tree based on five yes-or-no questions. The tree first asked if the patient had been colonized or infected with ESBL-producing bacteria within 6 months, and if so, whether the patient currently had an indwelling catheter. Patients meeting both criteria had a 92% chance of being ESBL positive. Patients with a recent history of ESBL but no catheter had an 81% chance of being ESBL positive if they were at least 43 years old, but a 75% chance of being ESBL negative if they were under age 43 years.

Among patients with no recent history of ESBL, the decision tree asked about hospitalization in a country with a high ESBL burden and antibiotic therapy during the past 6 months. Patients responding “yes” to both questions had a 100% chance of being ESBL positive. Patients with only the geographic risk factor had a 63% chance of being ESBL negative, and patients with neither risk factor had a 93% chance of being ESBL negative.

The decision tree detected only half of ESBL cases because there was a subgroup with no recent ESBL history or geographic exposure, the investigators noted. “The poor predictive nature of health care–associated variables within this patient subset may suggest a high proportion of community-acquired ESBL infections. Indeed, although risk factors for ESBLs have traditionally focused on the health care setting, increasing reports describe the community as an important ESBL reservoir,” they added. Nonetheless, of 194 patients with ESBL bacteremia, 35% received empiric carbapenem treatment within 6 hours after identification of the bacterial genus and species, the investigators emphasized. “Utilization of the decision tree would have increased ESBL case detection during the empiric treatment window by approximately 50%.”

The National Institutes of Health funded the study. The researchers reported having no conflicts of interest.