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Novel microbiome signature may detect NAFLD-cirrhosis
according to results from a study published in
“Limited data exist concerning the diagnostic accuracy of gut microbiome–derived signatures for detecting NAFLD-cirrhosis,” wrote Cyrielle Caussy, MD, PhD, of the University of California, San Diego, along with her colleagues.
The researchers conducted a cross-sectional analysis of 203 patients with NAFLD. Data was collected from a twin and family cohort with a total of 98 probands that included the complete spectrum of the disease. In addition, 105 first-degree relatives of the probands were also included.
The team analyzed stool samples of participants using MRI and assessed whether the novel signature could accurately identify cirrhosis in NAFLD.
After analysis, the researchers found that in a specific cohort of probands, the microbial biomarker showed strong diagnostic accuracy for identifying cirrhosis in patients with NAFLD (area under the ROC curve, 0.92). These findings were validated in another cohort of first-degree relatives of the proband group (AUROC, 0.87).
The authors acknowledged that a key limitation of the analysis was that it was only a single-center study. As a result, the widespread generalizability of the findings could be restricted.
“This conveniently assessed microbial biomarker could present an adjunct tool to current invasive approaches to determine stage of liver disease,” they concluded.
The study was supported by funding from the National Institutes of Health and Janssen. The authors reported financial affiliations with the American Gastroenterological Association, Atlantic Philanthropies, the John A. Hartford Foundation, and the Association of Specialty Professors.
SOURCE: Caussy C et al. Nat Commun. 2019 Mar 29. doi: 10.1038/s41467-019-09455-9.
according to results from a study published in
“Limited data exist concerning the diagnostic accuracy of gut microbiome–derived signatures for detecting NAFLD-cirrhosis,” wrote Cyrielle Caussy, MD, PhD, of the University of California, San Diego, along with her colleagues.
The researchers conducted a cross-sectional analysis of 203 patients with NAFLD. Data was collected from a twin and family cohort with a total of 98 probands that included the complete spectrum of the disease. In addition, 105 first-degree relatives of the probands were also included.
The team analyzed stool samples of participants using MRI and assessed whether the novel signature could accurately identify cirrhosis in NAFLD.
After analysis, the researchers found that in a specific cohort of probands, the microbial biomarker showed strong diagnostic accuracy for identifying cirrhosis in patients with NAFLD (area under the ROC curve, 0.92). These findings were validated in another cohort of first-degree relatives of the proband group (AUROC, 0.87).
The authors acknowledged that a key limitation of the analysis was that it was only a single-center study. As a result, the widespread generalizability of the findings could be restricted.
“This conveniently assessed microbial biomarker could present an adjunct tool to current invasive approaches to determine stage of liver disease,” they concluded.
The study was supported by funding from the National Institutes of Health and Janssen. The authors reported financial affiliations with the American Gastroenterological Association, Atlantic Philanthropies, the John A. Hartford Foundation, and the Association of Specialty Professors.
SOURCE: Caussy C et al. Nat Commun. 2019 Mar 29. doi: 10.1038/s41467-019-09455-9.
according to results from a study published in
“Limited data exist concerning the diagnostic accuracy of gut microbiome–derived signatures for detecting NAFLD-cirrhosis,” wrote Cyrielle Caussy, MD, PhD, of the University of California, San Diego, along with her colleagues.
The researchers conducted a cross-sectional analysis of 203 patients with NAFLD. Data was collected from a twin and family cohort with a total of 98 probands that included the complete spectrum of the disease. In addition, 105 first-degree relatives of the probands were also included.
The team analyzed stool samples of participants using MRI and assessed whether the novel signature could accurately identify cirrhosis in NAFLD.
After analysis, the researchers found that in a specific cohort of probands, the microbial biomarker showed strong diagnostic accuracy for identifying cirrhosis in patients with NAFLD (area under the ROC curve, 0.92). These findings were validated in another cohort of first-degree relatives of the proband group (AUROC, 0.87).
The authors acknowledged that a key limitation of the analysis was that it was only a single-center study. As a result, the widespread generalizability of the findings could be restricted.
“This conveniently assessed microbial biomarker could present an adjunct tool to current invasive approaches to determine stage of liver disease,” they concluded.
The study was supported by funding from the National Institutes of Health and Janssen. The authors reported financial affiliations with the American Gastroenterological Association, Atlantic Philanthropies, the John A. Hartford Foundation, and the Association of Specialty Professors.
SOURCE: Caussy C et al. Nat Commun. 2019 Mar 29. doi: 10.1038/s41467-019-09455-9.
FROM NATURE COMMUNICATIONS
Study eyes biomarkers of regorafenib response in hepatocellular carcinoma
.
“In the absence of established or predefined biomarkers for regorafenib, we performed a broad exploratory biomarker analyses at the DNA, RNA, and protein level that represents a much more comprehensive approach than previous studies of regorafenib or sorafenib,” wrote Michael Teufel, PhD, of Bayer Healthcare Pharmaceuticals in Whippany, N.J., and his associates. The preplanned, retrospective analysis of data from the phase 3 RESOURCE trial was reported in Gastroenterology.
The randomized trial included 567 patients whose hepatocellular carcinoma had progressed on sorafenib. Regorafenib significantly outperformed placebo with regard to overall survival (OS). Dr. Teufel and his associates performed next-generation sequencing on 17 archived tumor samples containing sufficient tissue (all from regorafenib recipients). They also performed immune profiling on 46 tumor samples (32 from regorafenib recipients and 14 from placebo recipients), protein analysis on 499 plasma samples (332 from regorafenib recipients and 167 from placebo recipients), and microRNA analysis on 343 plasma samples (234 regorafenib recipients and 109 placebo recipients).
Among 266 proteins tested, decreased levels of 5 proteins correlated with significantly longer OS on regorafenib therapy. These proteins are involved in inflammation or hepatocellular carcinogenesis, the researchers noted. Importantly, none were associated with survival independent of treatment. These five proteins included angiopoietin 1 (hazard ratio for OS, 0.53; 95% confidence interval, 0.38-0.73), cystatin B (hazard ratio, 0.47; 95% CI, 0.34-0.64); the latency-associated peptide of transforming growth factor beta (HR, 0.46; 95% CI, 0.33-0.64), oxidized low-density lipoprotein receptor 1 (HR, 0.54; 95% CI, 0.41-0.72), and C-C motif chemokine ligand 3 (HR, 0.54; 95% CI, 0.39-0.74).
Additionally, baseline concentrations of 47 of the 266 proteins correlated with a time to progression (TPP) benefit on regorafenib therapy (adjusted P less than or equal to .05 for each). The 47 proteins included all 5 that predicted an OS benefit. All but two proteins (calbindin and gelsolin) showed the same directional effect as for OS (that is, low expression predicted response).
Nine plasma microRNA’s levels correlated with improved OS on regorafenib (adjusted P less than or equal to .05): MIR30A, MIR122, MIR125B, MIR200A, MIR374B, MIR15B, MIR107, MIR320, and MIR645. Notably, expression was linked to longer OS specifically among patients with the Hoshida S3 subtype of hepatocellular carcinoma. Next-generation sequencing of tumor samples also identified 49 variants in 27 oncogenes or tumor-suppressor genes. Mutations in CTNNB1 were found in 3 of 10 patients who progressed on regorafenib, and VEGFA amplification was found in 1 of 7 regorafenib responders.
“Thus far, rational biomarker selection has been unsuccessful in identifying predictive markers for regorafenib in colorectal cancer and gastrointestinal stromal tumors,” the researchers commented. “The broader approach used in this study is not only biologically warranted considering the heterogeneity of hepatocellular carcinoma tumors, but is also needed due to the multiple targets and pathways affected by MKIs such as regorafenib. Levels of these circulating biomarkers and genetic features of tumors might be used to identify patients with hepatocellular carcinoma most likely to respond to regorafenib.”
Bayer funded the study, provided the study drug, and was involved in all aspects of the study. Dr. Teufel and three coinvestigators are Bayer employees. Dr. Teufel and two coinvestigators own stock in Bayer. Three other coinvestigators disclosed ties to Bayer and other pharmaceutical companies.
SOURCE: Teufel M et al. Gastroenterology. 2019 Jan 30. doi: 10.1053/j.gastro.2019.01.261.
.
“In the absence of established or predefined biomarkers for regorafenib, we performed a broad exploratory biomarker analyses at the DNA, RNA, and protein level that represents a much more comprehensive approach than previous studies of regorafenib or sorafenib,” wrote Michael Teufel, PhD, of Bayer Healthcare Pharmaceuticals in Whippany, N.J., and his associates. The preplanned, retrospective analysis of data from the phase 3 RESOURCE trial was reported in Gastroenterology.
The randomized trial included 567 patients whose hepatocellular carcinoma had progressed on sorafenib. Regorafenib significantly outperformed placebo with regard to overall survival (OS). Dr. Teufel and his associates performed next-generation sequencing on 17 archived tumor samples containing sufficient tissue (all from regorafenib recipients). They also performed immune profiling on 46 tumor samples (32 from regorafenib recipients and 14 from placebo recipients), protein analysis on 499 plasma samples (332 from regorafenib recipients and 167 from placebo recipients), and microRNA analysis on 343 plasma samples (234 regorafenib recipients and 109 placebo recipients).
Among 266 proteins tested, decreased levels of 5 proteins correlated with significantly longer OS on regorafenib therapy. These proteins are involved in inflammation or hepatocellular carcinogenesis, the researchers noted. Importantly, none were associated with survival independent of treatment. These five proteins included angiopoietin 1 (hazard ratio for OS, 0.53; 95% confidence interval, 0.38-0.73), cystatin B (hazard ratio, 0.47; 95% CI, 0.34-0.64); the latency-associated peptide of transforming growth factor beta (HR, 0.46; 95% CI, 0.33-0.64), oxidized low-density lipoprotein receptor 1 (HR, 0.54; 95% CI, 0.41-0.72), and C-C motif chemokine ligand 3 (HR, 0.54; 95% CI, 0.39-0.74).
Additionally, baseline concentrations of 47 of the 266 proteins correlated with a time to progression (TPP) benefit on regorafenib therapy (adjusted P less than or equal to .05 for each). The 47 proteins included all 5 that predicted an OS benefit. All but two proteins (calbindin and gelsolin) showed the same directional effect as for OS (that is, low expression predicted response).
Nine plasma microRNA’s levels correlated with improved OS on regorafenib (adjusted P less than or equal to .05): MIR30A, MIR122, MIR125B, MIR200A, MIR374B, MIR15B, MIR107, MIR320, and MIR645. Notably, expression was linked to longer OS specifically among patients with the Hoshida S3 subtype of hepatocellular carcinoma. Next-generation sequencing of tumor samples also identified 49 variants in 27 oncogenes or tumor-suppressor genes. Mutations in CTNNB1 were found in 3 of 10 patients who progressed on regorafenib, and VEGFA amplification was found in 1 of 7 regorafenib responders.
“Thus far, rational biomarker selection has been unsuccessful in identifying predictive markers for regorafenib in colorectal cancer and gastrointestinal stromal tumors,” the researchers commented. “The broader approach used in this study is not only biologically warranted considering the heterogeneity of hepatocellular carcinoma tumors, but is also needed due to the multiple targets and pathways affected by MKIs such as regorafenib. Levels of these circulating biomarkers and genetic features of tumors might be used to identify patients with hepatocellular carcinoma most likely to respond to regorafenib.”
Bayer funded the study, provided the study drug, and was involved in all aspects of the study. Dr. Teufel and three coinvestigators are Bayer employees. Dr. Teufel and two coinvestigators own stock in Bayer. Three other coinvestigators disclosed ties to Bayer and other pharmaceutical companies.
SOURCE: Teufel M et al. Gastroenterology. 2019 Jan 30. doi: 10.1053/j.gastro.2019.01.261.
.
“In the absence of established or predefined biomarkers for regorafenib, we performed a broad exploratory biomarker analyses at the DNA, RNA, and protein level that represents a much more comprehensive approach than previous studies of regorafenib or sorafenib,” wrote Michael Teufel, PhD, of Bayer Healthcare Pharmaceuticals in Whippany, N.J., and his associates. The preplanned, retrospective analysis of data from the phase 3 RESOURCE trial was reported in Gastroenterology.
The randomized trial included 567 patients whose hepatocellular carcinoma had progressed on sorafenib. Regorafenib significantly outperformed placebo with regard to overall survival (OS). Dr. Teufel and his associates performed next-generation sequencing on 17 archived tumor samples containing sufficient tissue (all from regorafenib recipients). They also performed immune profiling on 46 tumor samples (32 from regorafenib recipients and 14 from placebo recipients), protein analysis on 499 plasma samples (332 from regorafenib recipients and 167 from placebo recipients), and microRNA analysis on 343 plasma samples (234 regorafenib recipients and 109 placebo recipients).
Among 266 proteins tested, decreased levels of 5 proteins correlated with significantly longer OS on regorafenib therapy. These proteins are involved in inflammation or hepatocellular carcinogenesis, the researchers noted. Importantly, none were associated with survival independent of treatment. These five proteins included angiopoietin 1 (hazard ratio for OS, 0.53; 95% confidence interval, 0.38-0.73), cystatin B (hazard ratio, 0.47; 95% CI, 0.34-0.64); the latency-associated peptide of transforming growth factor beta (HR, 0.46; 95% CI, 0.33-0.64), oxidized low-density lipoprotein receptor 1 (HR, 0.54; 95% CI, 0.41-0.72), and C-C motif chemokine ligand 3 (HR, 0.54; 95% CI, 0.39-0.74).
Additionally, baseline concentrations of 47 of the 266 proteins correlated with a time to progression (TPP) benefit on regorafenib therapy (adjusted P less than or equal to .05 for each). The 47 proteins included all 5 that predicted an OS benefit. All but two proteins (calbindin and gelsolin) showed the same directional effect as for OS (that is, low expression predicted response).
Nine plasma microRNA’s levels correlated with improved OS on regorafenib (adjusted P less than or equal to .05): MIR30A, MIR122, MIR125B, MIR200A, MIR374B, MIR15B, MIR107, MIR320, and MIR645. Notably, expression was linked to longer OS specifically among patients with the Hoshida S3 subtype of hepatocellular carcinoma. Next-generation sequencing of tumor samples also identified 49 variants in 27 oncogenes or tumor-suppressor genes. Mutations in CTNNB1 were found in 3 of 10 patients who progressed on regorafenib, and VEGFA amplification was found in 1 of 7 regorafenib responders.
“Thus far, rational biomarker selection has been unsuccessful in identifying predictive markers for regorafenib in colorectal cancer and gastrointestinal stromal tumors,” the researchers commented. “The broader approach used in this study is not only biologically warranted considering the heterogeneity of hepatocellular carcinoma tumors, but is also needed due to the multiple targets and pathways affected by MKIs such as regorafenib. Levels of these circulating biomarkers and genetic features of tumors might be used to identify patients with hepatocellular carcinoma most likely to respond to regorafenib.”
Bayer funded the study, provided the study drug, and was involved in all aspects of the study. Dr. Teufel and three coinvestigators are Bayer employees. Dr. Teufel and two coinvestigators own stock in Bayer. Three other coinvestigators disclosed ties to Bayer and other pharmaceutical companies.
SOURCE: Teufel M et al. Gastroenterology. 2019 Jan 30. doi: 10.1053/j.gastro.2019.01.261.
FROM GASTROENTEROLOGY
For patients with HBV, daily aspirin may reduce risk of liver cancer
Sixteen years of data showed that daily aspirin therapy reduced the risk of HBV-related HCC by 29%, reported lead author Teng-Yu Lee, MD, PhD, of Taichung (Taiwan) Veterans General Hospital and his colleagues. Analysis also showed that antiviral nucleos(t)ide analogue therapy and statin use were independently associated with reduced risk of HCC, whereas older age, cirrhosis, and male sex increased risk.
“Therapy with [nucleos(t)ide analogues] is associated with reductions in HCC risk, but the risk is not erased,” the investigators wrote in JAMA Internal Medicine. “Therefore, using only [nucleos(t)ide analogue] therapy may not be enough for HCC prevention. Antiviral therapy is not indicated in most HBV carriers, so another effective way of reducing HCC risk needs to be developed.”
Previous studies have shown that aspirin can reduce the risk of colorectal cancer; however, data supporting aspirin for HCC prevention are limited to a few animal models and human studies, the latter of which are statistically unreliable.
“Therefore, we conducted a nationwide cohort study to evaluate the association of daily aspirin therapy with HBV-related HCC,” the investigators wrote.
They screened 204,507 patients with HBV included in the Taiwanese National Health Insurance Research Database (NHIRD) between 1997 and 2012, first excluding any with confounding conditions, such as hepatitis C infection or alcoholic liver disease. Next, 2,123 patients were identified who had taken aspirin for 90 days or longer. Finally, these cases were randomly matched with 8,492 control patients with HBV who had never received antiplatelet therapy. The main measured outcome was diagnosis with HCC. Patients were followed until this diagnosis was made, death occurred, or the end of the study period.
Analysis showed that most patients were male (72.4%) and took aspirin for about 4 years, usually prescribed for cardiovascular disease risk factors. Almost all patients in the treatment group (98%) received an aspirin dose of 100 mg or less.
After 5 years, the cumulative incidence of HCC in the aspirin group was 5.20% versus 7.87% in the control group (P less than .001). Multivariable analysis revealed that daily aspirin was associated with a significant risk reduction of 29% (HR 0.71; P less than .001), as were nucleos(t)ide analogues and statins, which lowered risk by 46% and 38%, respectively. In contrast, risk increased with older age at the rate of 1% per year, male sex carried an additional risk of 75%, and liver cirrhosis was associated with a 2.89-fold risk increase.
“In the present study, we report that daily aspirin therapy was associated with a reduced incidence of HCC in patients with [chronic hepatitis B],” the investigators wrote. “Our findings may be of help in future efforts to further improve the chemoprevention of HBV-related HCC, and a proof-of-concept study is thus warranted.”
The investigators described several mechanisms that may have contribute to the possible risk reduction provided by aspirin. For one, aspirin inhibits platelet activation, which is associated with development of HBV-related liver disease. Additional benefit may come from induction of HCC cell apoptosis, control of tumor growth, reduced liver fibrosis, and increased liver regeneration, all of which have been associated with aspirin in rodent models.
“Hepatitis B virus–related HCC is generally a consequence of chronic inflammation due to hepatitis, fibrosis, dysplasia, and tumor growth,” the investigators wrote, suggesting that aspirin-related reductions in inflammation could also explain reduced neoplastic activity.
To assess for increased risk of peptic ulcers secondary to aspirin, the investigators performed a subanalysis of peptic ulcer bleeding. These results showed that rates of peptic ulcer bleeding, at around 5%-6%, were similar between the aspirin group and the control group. Among other variables, cirrhosis didn’t significantly affect rates of peptic ulcer bleeding, and aspirin users had similar rates of peptic ulcer bleeding regardless of HBV status. Because of the study design, however, the investigators cautioned that these analyses could underestimate ulcer risk because patients who could not tolerate aspirin for at least 90 days were excluded from the study.
Although statins stood out as another possible risk reducer, the investigators noted that “randomized clinical trials are required to confirm the chemopreventive effect of statins.”
Similarly, the investigators suggested that a prospective trial is needed before aspirin can be adopted as an HCC preventive.
The study was funded by the Ministry of Science and Technology, National Health Research Institutes, and Taichung (Taiwan) Veterans General Hospital, Taiwan. One author reported financial compensation from Gilead and Bristol-Myers Squibb.
SOURCE: Lee T-Y et al. JAMA Intern Med. 2019 Mar 18. doi:10.1001/jamainternmed.2018.8342.
Sixteen years of data showed that daily aspirin therapy reduced the risk of HBV-related HCC by 29%, reported lead author Teng-Yu Lee, MD, PhD, of Taichung (Taiwan) Veterans General Hospital and his colleagues. Analysis also showed that antiviral nucleos(t)ide analogue therapy and statin use were independently associated with reduced risk of HCC, whereas older age, cirrhosis, and male sex increased risk.
“Therapy with [nucleos(t)ide analogues] is associated with reductions in HCC risk, but the risk is not erased,” the investigators wrote in JAMA Internal Medicine. “Therefore, using only [nucleos(t)ide analogue] therapy may not be enough for HCC prevention. Antiviral therapy is not indicated in most HBV carriers, so another effective way of reducing HCC risk needs to be developed.”
Previous studies have shown that aspirin can reduce the risk of colorectal cancer; however, data supporting aspirin for HCC prevention are limited to a few animal models and human studies, the latter of which are statistically unreliable.
“Therefore, we conducted a nationwide cohort study to evaluate the association of daily aspirin therapy with HBV-related HCC,” the investigators wrote.
They screened 204,507 patients with HBV included in the Taiwanese National Health Insurance Research Database (NHIRD) between 1997 and 2012, first excluding any with confounding conditions, such as hepatitis C infection or alcoholic liver disease. Next, 2,123 patients were identified who had taken aspirin for 90 days or longer. Finally, these cases were randomly matched with 8,492 control patients with HBV who had never received antiplatelet therapy. The main measured outcome was diagnosis with HCC. Patients were followed until this diagnosis was made, death occurred, or the end of the study period.
Analysis showed that most patients were male (72.4%) and took aspirin for about 4 years, usually prescribed for cardiovascular disease risk factors. Almost all patients in the treatment group (98%) received an aspirin dose of 100 mg or less.
After 5 years, the cumulative incidence of HCC in the aspirin group was 5.20% versus 7.87% in the control group (P less than .001). Multivariable analysis revealed that daily aspirin was associated with a significant risk reduction of 29% (HR 0.71; P less than .001), as were nucleos(t)ide analogues and statins, which lowered risk by 46% and 38%, respectively. In contrast, risk increased with older age at the rate of 1% per year, male sex carried an additional risk of 75%, and liver cirrhosis was associated with a 2.89-fold risk increase.
“In the present study, we report that daily aspirin therapy was associated with a reduced incidence of HCC in patients with [chronic hepatitis B],” the investigators wrote. “Our findings may be of help in future efforts to further improve the chemoprevention of HBV-related HCC, and a proof-of-concept study is thus warranted.”
The investigators described several mechanisms that may have contribute to the possible risk reduction provided by aspirin. For one, aspirin inhibits platelet activation, which is associated with development of HBV-related liver disease. Additional benefit may come from induction of HCC cell apoptosis, control of tumor growth, reduced liver fibrosis, and increased liver regeneration, all of which have been associated with aspirin in rodent models.
“Hepatitis B virus–related HCC is generally a consequence of chronic inflammation due to hepatitis, fibrosis, dysplasia, and tumor growth,” the investigators wrote, suggesting that aspirin-related reductions in inflammation could also explain reduced neoplastic activity.
To assess for increased risk of peptic ulcers secondary to aspirin, the investigators performed a subanalysis of peptic ulcer bleeding. These results showed that rates of peptic ulcer bleeding, at around 5%-6%, were similar between the aspirin group and the control group. Among other variables, cirrhosis didn’t significantly affect rates of peptic ulcer bleeding, and aspirin users had similar rates of peptic ulcer bleeding regardless of HBV status. Because of the study design, however, the investigators cautioned that these analyses could underestimate ulcer risk because patients who could not tolerate aspirin for at least 90 days were excluded from the study.
Although statins stood out as another possible risk reducer, the investigators noted that “randomized clinical trials are required to confirm the chemopreventive effect of statins.”
Similarly, the investigators suggested that a prospective trial is needed before aspirin can be adopted as an HCC preventive.
The study was funded by the Ministry of Science and Technology, National Health Research Institutes, and Taichung (Taiwan) Veterans General Hospital, Taiwan. One author reported financial compensation from Gilead and Bristol-Myers Squibb.
SOURCE: Lee T-Y et al. JAMA Intern Med. 2019 Mar 18. doi:10.1001/jamainternmed.2018.8342.
Sixteen years of data showed that daily aspirin therapy reduced the risk of HBV-related HCC by 29%, reported lead author Teng-Yu Lee, MD, PhD, of Taichung (Taiwan) Veterans General Hospital and his colleagues. Analysis also showed that antiviral nucleos(t)ide analogue therapy and statin use were independently associated with reduced risk of HCC, whereas older age, cirrhosis, and male sex increased risk.
“Therapy with [nucleos(t)ide analogues] is associated with reductions in HCC risk, but the risk is not erased,” the investigators wrote in JAMA Internal Medicine. “Therefore, using only [nucleos(t)ide analogue] therapy may not be enough for HCC prevention. Antiviral therapy is not indicated in most HBV carriers, so another effective way of reducing HCC risk needs to be developed.”
Previous studies have shown that aspirin can reduce the risk of colorectal cancer; however, data supporting aspirin for HCC prevention are limited to a few animal models and human studies, the latter of which are statistically unreliable.
“Therefore, we conducted a nationwide cohort study to evaluate the association of daily aspirin therapy with HBV-related HCC,” the investigators wrote.
They screened 204,507 patients with HBV included in the Taiwanese National Health Insurance Research Database (NHIRD) between 1997 and 2012, first excluding any with confounding conditions, such as hepatitis C infection or alcoholic liver disease. Next, 2,123 patients were identified who had taken aspirin for 90 days or longer. Finally, these cases were randomly matched with 8,492 control patients with HBV who had never received antiplatelet therapy. The main measured outcome was diagnosis with HCC. Patients were followed until this diagnosis was made, death occurred, or the end of the study period.
Analysis showed that most patients were male (72.4%) and took aspirin for about 4 years, usually prescribed for cardiovascular disease risk factors. Almost all patients in the treatment group (98%) received an aspirin dose of 100 mg or less.
After 5 years, the cumulative incidence of HCC in the aspirin group was 5.20% versus 7.87% in the control group (P less than .001). Multivariable analysis revealed that daily aspirin was associated with a significant risk reduction of 29% (HR 0.71; P less than .001), as were nucleos(t)ide analogues and statins, which lowered risk by 46% and 38%, respectively. In contrast, risk increased with older age at the rate of 1% per year, male sex carried an additional risk of 75%, and liver cirrhosis was associated with a 2.89-fold risk increase.
“In the present study, we report that daily aspirin therapy was associated with a reduced incidence of HCC in patients with [chronic hepatitis B],” the investigators wrote. “Our findings may be of help in future efforts to further improve the chemoprevention of HBV-related HCC, and a proof-of-concept study is thus warranted.”
The investigators described several mechanisms that may have contribute to the possible risk reduction provided by aspirin. For one, aspirin inhibits platelet activation, which is associated with development of HBV-related liver disease. Additional benefit may come from induction of HCC cell apoptosis, control of tumor growth, reduced liver fibrosis, and increased liver regeneration, all of which have been associated with aspirin in rodent models.
“Hepatitis B virus–related HCC is generally a consequence of chronic inflammation due to hepatitis, fibrosis, dysplasia, and tumor growth,” the investigators wrote, suggesting that aspirin-related reductions in inflammation could also explain reduced neoplastic activity.
To assess for increased risk of peptic ulcers secondary to aspirin, the investigators performed a subanalysis of peptic ulcer bleeding. These results showed that rates of peptic ulcer bleeding, at around 5%-6%, were similar between the aspirin group and the control group. Among other variables, cirrhosis didn’t significantly affect rates of peptic ulcer bleeding, and aspirin users had similar rates of peptic ulcer bleeding regardless of HBV status. Because of the study design, however, the investigators cautioned that these analyses could underestimate ulcer risk because patients who could not tolerate aspirin for at least 90 days were excluded from the study.
Although statins stood out as another possible risk reducer, the investigators noted that “randomized clinical trials are required to confirm the chemopreventive effect of statins.”
Similarly, the investigators suggested that a prospective trial is needed before aspirin can be adopted as an HCC preventive.
The study was funded by the Ministry of Science and Technology, National Health Research Institutes, and Taichung (Taiwan) Veterans General Hospital, Taiwan. One author reported financial compensation from Gilead and Bristol-Myers Squibb.
SOURCE: Lee T-Y et al. JAMA Intern Med. 2019 Mar 18. doi:10.1001/jamainternmed.2018.8342.
FROM JAMA INTERNAL MEDICINE
For patients with end-stage liver disease, acute care incurs steep costs
End-of-life care for patients with end-stage liver disease cost more than four of the five most expensive chronic medical conditions, according to the findings of a population-based study in Canada.
During their final year of life, patients with end-stage liver disease incurred a median of $51,191 Canadian dollars in health care costs (interquartile range, $28,510-$86,659) – approximately $2,360 more than ischemic heart disease, $1,830 more than diabetes, $1,600 more than mental health disorders, and $600 more than congestive heart failure, Erin M. Kelly, MD, of the University of Ottawa, and her associates wrote in Clinical Gastroenterology and Hepatology. Only chronic renal disease cost more (median, $55,453). Most health care costs of end-stage liver disease covered the final 90 days of life and were tied to high use of hospital resources, the researchers said.
In the United States, more than 150,000 patients are hospitalized for end-stage liver disease every year at a price tag of $4 billion, Dr. Kelly and her associates noted. This price tag is expected to rise further because of epidemic levels of obesity and related nonalcoholic fatty liver disease. The shortage of livers for transplantation and the fact that many patients with cirrhosis are not transplantation candidates leave many in end-of-life care. Given the lack of population-level data on costs of this care, the researchers studied data for all individuals who died in Ontario – Canada’s largest province – between April 2010 and March 2013. The data source was the Institute for Clinical Evaluative Sciences, a nonprofit group that tracks diagnoses, health care, outcomes, and costs.
Among 264,723 decedents, 5,087 (1.9%) had a diagnosis of end-stage liver disease. These patients died a median of 15 years earlier than other patients (median age of death, 65 vs. 80 years old). During the last year of life, 99% visited the emergency department or were hospitalized, compared with 86% of other patients. Importantly, health care costs for the two groups were similar up until the final 90 days of life, when there was “a clear divergence,” the researchers said. A total of 51% of the costs of the final 12 months of care related to acute care during the final 90 days of life. Consequently, during their last 3 months, patients with end-stage liver disease cost the health care system 46% more than other individuals, the difference remained statistically significant after accounting for demographics and comorbidities, and the picture changed little after excluding transplantation patients and those with hepatocellular carcinoma.
Medical care for patients with end-stage liver disease is complex – often involving serious infections, gastrointestinal bleeding, renal dysfunction, electrolyte disturbances, and worsening encephalopathy – and often involves frequent hospital readmissions, the researchers noted. Nonetheless, the findings highlight the need to consider steps such as advanced care planning and palliative care to help keep patients with end-stage liver disease from dying in acute care settings, they concluded. Such steps “may direct services toward more appropriate sectors, while reducing costs.”
The Ontario Ministry of Health and Long-Term Care supported the work. The researchers reported having no competing interests.
SOURCE: Kelly EM et al. Clin Gastroenterol Hepatol. 2019 Jan 28. doi: 10.1016/j.cgh.2019.01.046.
End-of-life care for patients with end-stage liver disease cost more than four of the five most expensive chronic medical conditions, according to the findings of a population-based study in Canada.
During their final year of life, patients with end-stage liver disease incurred a median of $51,191 Canadian dollars in health care costs (interquartile range, $28,510-$86,659) – approximately $2,360 more than ischemic heart disease, $1,830 more than diabetes, $1,600 more than mental health disorders, and $600 more than congestive heart failure, Erin M. Kelly, MD, of the University of Ottawa, and her associates wrote in Clinical Gastroenterology and Hepatology. Only chronic renal disease cost more (median, $55,453). Most health care costs of end-stage liver disease covered the final 90 days of life and were tied to high use of hospital resources, the researchers said.
In the United States, more than 150,000 patients are hospitalized for end-stage liver disease every year at a price tag of $4 billion, Dr. Kelly and her associates noted. This price tag is expected to rise further because of epidemic levels of obesity and related nonalcoholic fatty liver disease. The shortage of livers for transplantation and the fact that many patients with cirrhosis are not transplantation candidates leave many in end-of-life care. Given the lack of population-level data on costs of this care, the researchers studied data for all individuals who died in Ontario – Canada’s largest province – between April 2010 and March 2013. The data source was the Institute for Clinical Evaluative Sciences, a nonprofit group that tracks diagnoses, health care, outcomes, and costs.
Among 264,723 decedents, 5,087 (1.9%) had a diagnosis of end-stage liver disease. These patients died a median of 15 years earlier than other patients (median age of death, 65 vs. 80 years old). During the last year of life, 99% visited the emergency department or were hospitalized, compared with 86% of other patients. Importantly, health care costs for the two groups were similar up until the final 90 days of life, when there was “a clear divergence,” the researchers said. A total of 51% of the costs of the final 12 months of care related to acute care during the final 90 days of life. Consequently, during their last 3 months, patients with end-stage liver disease cost the health care system 46% more than other individuals, the difference remained statistically significant after accounting for demographics and comorbidities, and the picture changed little after excluding transplantation patients and those with hepatocellular carcinoma.
Medical care for patients with end-stage liver disease is complex – often involving serious infections, gastrointestinal bleeding, renal dysfunction, electrolyte disturbances, and worsening encephalopathy – and often involves frequent hospital readmissions, the researchers noted. Nonetheless, the findings highlight the need to consider steps such as advanced care planning and palliative care to help keep patients with end-stage liver disease from dying in acute care settings, they concluded. Such steps “may direct services toward more appropriate sectors, while reducing costs.”
The Ontario Ministry of Health and Long-Term Care supported the work. The researchers reported having no competing interests.
SOURCE: Kelly EM et al. Clin Gastroenterol Hepatol. 2019 Jan 28. doi: 10.1016/j.cgh.2019.01.046.
End-of-life care for patients with end-stage liver disease cost more than four of the five most expensive chronic medical conditions, according to the findings of a population-based study in Canada.
During their final year of life, patients with end-stage liver disease incurred a median of $51,191 Canadian dollars in health care costs (interquartile range, $28,510-$86,659) – approximately $2,360 more than ischemic heart disease, $1,830 more than diabetes, $1,600 more than mental health disorders, and $600 more than congestive heart failure, Erin M. Kelly, MD, of the University of Ottawa, and her associates wrote in Clinical Gastroenterology and Hepatology. Only chronic renal disease cost more (median, $55,453). Most health care costs of end-stage liver disease covered the final 90 days of life and were tied to high use of hospital resources, the researchers said.
In the United States, more than 150,000 patients are hospitalized for end-stage liver disease every year at a price tag of $4 billion, Dr. Kelly and her associates noted. This price tag is expected to rise further because of epidemic levels of obesity and related nonalcoholic fatty liver disease. The shortage of livers for transplantation and the fact that many patients with cirrhosis are not transplantation candidates leave many in end-of-life care. Given the lack of population-level data on costs of this care, the researchers studied data for all individuals who died in Ontario – Canada’s largest province – between April 2010 and March 2013. The data source was the Institute for Clinical Evaluative Sciences, a nonprofit group that tracks diagnoses, health care, outcomes, and costs.
Among 264,723 decedents, 5,087 (1.9%) had a diagnosis of end-stage liver disease. These patients died a median of 15 years earlier than other patients (median age of death, 65 vs. 80 years old). During the last year of life, 99% visited the emergency department or were hospitalized, compared with 86% of other patients. Importantly, health care costs for the two groups were similar up until the final 90 days of life, when there was “a clear divergence,” the researchers said. A total of 51% of the costs of the final 12 months of care related to acute care during the final 90 days of life. Consequently, during their last 3 months, patients with end-stage liver disease cost the health care system 46% more than other individuals, the difference remained statistically significant after accounting for demographics and comorbidities, and the picture changed little after excluding transplantation patients and those with hepatocellular carcinoma.
Medical care for patients with end-stage liver disease is complex – often involving serious infections, gastrointestinal bleeding, renal dysfunction, electrolyte disturbances, and worsening encephalopathy – and often involves frequent hospital readmissions, the researchers noted. Nonetheless, the findings highlight the need to consider steps such as advanced care planning and palliative care to help keep patients with end-stage liver disease from dying in acute care settings, they concluded. Such steps “may direct services toward more appropriate sectors, while reducing costs.”
The Ontario Ministry of Health and Long-Term Care supported the work. The researchers reported having no competing interests.
SOURCE: Kelly EM et al. Clin Gastroenterol Hepatol. 2019 Jan 28. doi: 10.1016/j.cgh.2019.01.046.
FROM CLINICAL GASTROENTEROLOGY AND HEPATOLOGY
Cirrhosis model predicts decompensation across diverse populations
A prognostic model that uses serum albumin-bilirubin (ALBI) and Fibrosis-4 (FIB-4) scores can identify patients with cirrhosis who are at high risk of liver decompensation, according to investigators.
During validation testing, the scoring system performed well among European and Middle Eastern patients, which supports prognostic value across diverse populations, reported lead author Neil Guha, MRCP, PhD, of the University of Nottingham (U.K.) and his colleagues, who suggested that the scoring system could fix an important practice gap.
“Identification of patients [with chronic liver disease] that need intensive monitoring and timely intervention is challenging,” the investigators wrote in Clinical Gastroenterology and Hepatology. “Robust prognostic tools using simple laboratory variables, with potential for implementation in nonspecialist settings and across different health care systems, have significant appeal.”
Although existing scoring systems have been used for decades, they have clear limitations, the investigators noted, referring to predictive ability that may be too little, too late.
“[T]hese scoring systems provide value after synthetic liver function has become significantly deranged and provide only short-term prognostic value,” the investigators wrote. “Presently, there are no scores, performed in routine clinical practice, that provide robust prognostic stratification within early, compensated cirrhosis over the medium/long term.”
To fulfill this need, the investigators developed and validated a prognostic model that incorporates data from the ALBI and FIB-4 scoring systems because these tests measure both fibrosis and function. The development phase involved 145 patients with compensated cirrhosis from Nottingham. Almost half of the cohort had liver disease because of alcohol (44.8%), while about one out of three patients had nonalcoholic fatty liver disease (29.7%). After investigators collected baseline clinical features and scores, patients were followed for a median of 4.59 years, during which time decompensation events were recorded (ascites, variceal bleeding, and encephalopathy). Decompensation occurred in about one out of five patients (19.3%) in the U.K. group, with ascites being the most common (71.4%). Using these findings, the investigators created the prognostic model, which classified patients as having either low or high risk of decompensation. In the development cohort, patients with high risk scores had a hazard ratio for decompensation of 7.10.
In the second part of the study, the investigators validated their model with two clinically distinct groups in Dublin, Ireland (prospective; n = 141), and Menoufia, Egypt (retrospective; n = 93).
In the Dublin cohort, the most common etiologies were alcohol (39.7%) and hepatitis C (29.8%). Over a maximum observational period of 6.4 years, the decompensation rate was lower than the development group, at 12.1%. Types of decompensation also differed, with variceal bleeding being the most common (47.1%). Patients with high risk scores had a higher HR for decompensation than the U.K. cohort, at 12.54.
In the Egypt group, the most common causes of liver disease were nonalcoholic fatty liver disease (47.3%) and hepatitis C (34.4%). The maximum follow-up period was 10.6 years, during which time 38.7% of patients experienced decompensation, with ascites being the most common form (57.1%). The HR of 5.10 was the lowest of all cohorts.
The investigators noted that the cohorts represented unique patient populations with different etiological patterns. “This provides reassurance that the model has generalizability for stratifying liver disease at an international level,” the investigators wrote, suggesting that ALBI and FIB-4 can be used in low-resource and community settings.
“A frequently leveled criticism of algorithms such as ALBI-FIB-4 is that they are too complicated to be applied routinely in the clinical setting,” the investigators wrote. “To overcome this problem we developed a simple online calculator which can be accessed using the following link: https://jscalc.io/calc/gdEJj89Wz5PirkSL.”
“We have shown that routinely available laboratory variables, combined in a novel algorithm, ALBI-FIB-4, can stratify patients with cirrhosis for future risk of liver decompensation,” the investigators concluded. “The ability to do this in the context of early, compensated cirrhosis with preserved liver synthetic function whilst also predicting long-term clinical outcomes has clinical utility for international health care systems.”
The study was funded by National Institute for Health Research (NIHR) Nottingham Digestive Diseases Biomedical Research Centre based at Nottingham University Hospitals NHS Trust and the University of Nottingham. The investigators declared no conflicts of interest.
SOURCE: Guha N et al. CGH. 2019 Feb 1. doi: 10.1016/j.cgh.2019.01.042.
A prognostic model that uses serum albumin-bilirubin (ALBI) and Fibrosis-4 (FIB-4) scores can identify patients with cirrhosis who are at high risk of liver decompensation, according to investigators.
During validation testing, the scoring system performed well among European and Middle Eastern patients, which supports prognostic value across diverse populations, reported lead author Neil Guha, MRCP, PhD, of the University of Nottingham (U.K.) and his colleagues, who suggested that the scoring system could fix an important practice gap.
“Identification of patients [with chronic liver disease] that need intensive monitoring and timely intervention is challenging,” the investigators wrote in Clinical Gastroenterology and Hepatology. “Robust prognostic tools using simple laboratory variables, with potential for implementation in nonspecialist settings and across different health care systems, have significant appeal.”
Although existing scoring systems have been used for decades, they have clear limitations, the investigators noted, referring to predictive ability that may be too little, too late.
“[T]hese scoring systems provide value after synthetic liver function has become significantly deranged and provide only short-term prognostic value,” the investigators wrote. “Presently, there are no scores, performed in routine clinical practice, that provide robust prognostic stratification within early, compensated cirrhosis over the medium/long term.”
To fulfill this need, the investigators developed and validated a prognostic model that incorporates data from the ALBI and FIB-4 scoring systems because these tests measure both fibrosis and function. The development phase involved 145 patients with compensated cirrhosis from Nottingham. Almost half of the cohort had liver disease because of alcohol (44.8%), while about one out of three patients had nonalcoholic fatty liver disease (29.7%). After investigators collected baseline clinical features and scores, patients were followed for a median of 4.59 years, during which time decompensation events were recorded (ascites, variceal bleeding, and encephalopathy). Decompensation occurred in about one out of five patients (19.3%) in the U.K. group, with ascites being the most common (71.4%). Using these findings, the investigators created the prognostic model, which classified patients as having either low or high risk of decompensation. In the development cohort, patients with high risk scores had a hazard ratio for decompensation of 7.10.
In the second part of the study, the investigators validated their model with two clinically distinct groups in Dublin, Ireland (prospective; n = 141), and Menoufia, Egypt (retrospective; n = 93).
In the Dublin cohort, the most common etiologies were alcohol (39.7%) and hepatitis C (29.8%). Over a maximum observational period of 6.4 years, the decompensation rate was lower than the development group, at 12.1%. Types of decompensation also differed, with variceal bleeding being the most common (47.1%). Patients with high risk scores had a higher HR for decompensation than the U.K. cohort, at 12.54.
In the Egypt group, the most common causes of liver disease were nonalcoholic fatty liver disease (47.3%) and hepatitis C (34.4%). The maximum follow-up period was 10.6 years, during which time 38.7% of patients experienced decompensation, with ascites being the most common form (57.1%). The HR of 5.10 was the lowest of all cohorts.
The investigators noted that the cohorts represented unique patient populations with different etiological patterns. “This provides reassurance that the model has generalizability for stratifying liver disease at an international level,” the investigators wrote, suggesting that ALBI and FIB-4 can be used in low-resource and community settings.
“A frequently leveled criticism of algorithms such as ALBI-FIB-4 is that they are too complicated to be applied routinely in the clinical setting,” the investigators wrote. “To overcome this problem we developed a simple online calculator which can be accessed using the following link: https://jscalc.io/calc/gdEJj89Wz5PirkSL.”
“We have shown that routinely available laboratory variables, combined in a novel algorithm, ALBI-FIB-4, can stratify patients with cirrhosis for future risk of liver decompensation,” the investigators concluded. “The ability to do this in the context of early, compensated cirrhosis with preserved liver synthetic function whilst also predicting long-term clinical outcomes has clinical utility for international health care systems.”
The study was funded by National Institute for Health Research (NIHR) Nottingham Digestive Diseases Biomedical Research Centre based at Nottingham University Hospitals NHS Trust and the University of Nottingham. The investigators declared no conflicts of interest.
SOURCE: Guha N et al. CGH. 2019 Feb 1. doi: 10.1016/j.cgh.2019.01.042.
A prognostic model that uses serum albumin-bilirubin (ALBI) and Fibrosis-4 (FIB-4) scores can identify patients with cirrhosis who are at high risk of liver decompensation, according to investigators.
During validation testing, the scoring system performed well among European and Middle Eastern patients, which supports prognostic value across diverse populations, reported lead author Neil Guha, MRCP, PhD, of the University of Nottingham (U.K.) and his colleagues, who suggested that the scoring system could fix an important practice gap.
“Identification of patients [with chronic liver disease] that need intensive monitoring and timely intervention is challenging,” the investigators wrote in Clinical Gastroenterology and Hepatology. “Robust prognostic tools using simple laboratory variables, with potential for implementation in nonspecialist settings and across different health care systems, have significant appeal.”
Although existing scoring systems have been used for decades, they have clear limitations, the investigators noted, referring to predictive ability that may be too little, too late.
“[T]hese scoring systems provide value after synthetic liver function has become significantly deranged and provide only short-term prognostic value,” the investigators wrote. “Presently, there are no scores, performed in routine clinical practice, that provide robust prognostic stratification within early, compensated cirrhosis over the medium/long term.”
To fulfill this need, the investigators developed and validated a prognostic model that incorporates data from the ALBI and FIB-4 scoring systems because these tests measure both fibrosis and function. The development phase involved 145 patients with compensated cirrhosis from Nottingham. Almost half of the cohort had liver disease because of alcohol (44.8%), while about one out of three patients had nonalcoholic fatty liver disease (29.7%). After investigators collected baseline clinical features and scores, patients were followed for a median of 4.59 years, during which time decompensation events were recorded (ascites, variceal bleeding, and encephalopathy). Decompensation occurred in about one out of five patients (19.3%) in the U.K. group, with ascites being the most common (71.4%). Using these findings, the investigators created the prognostic model, which classified patients as having either low or high risk of decompensation. In the development cohort, patients with high risk scores had a hazard ratio for decompensation of 7.10.
In the second part of the study, the investigators validated their model with two clinically distinct groups in Dublin, Ireland (prospective; n = 141), and Menoufia, Egypt (retrospective; n = 93).
In the Dublin cohort, the most common etiologies were alcohol (39.7%) and hepatitis C (29.8%). Over a maximum observational period of 6.4 years, the decompensation rate was lower than the development group, at 12.1%. Types of decompensation also differed, with variceal bleeding being the most common (47.1%). Patients with high risk scores had a higher HR for decompensation than the U.K. cohort, at 12.54.
In the Egypt group, the most common causes of liver disease were nonalcoholic fatty liver disease (47.3%) and hepatitis C (34.4%). The maximum follow-up period was 10.6 years, during which time 38.7% of patients experienced decompensation, with ascites being the most common form (57.1%). The HR of 5.10 was the lowest of all cohorts.
The investigators noted that the cohorts represented unique patient populations with different etiological patterns. “This provides reassurance that the model has generalizability for stratifying liver disease at an international level,” the investigators wrote, suggesting that ALBI and FIB-4 can be used in low-resource and community settings.
“A frequently leveled criticism of algorithms such as ALBI-FIB-4 is that they are too complicated to be applied routinely in the clinical setting,” the investigators wrote. “To overcome this problem we developed a simple online calculator which can be accessed using the following link: https://jscalc.io/calc/gdEJj89Wz5PirkSL.”
“We have shown that routinely available laboratory variables, combined in a novel algorithm, ALBI-FIB-4, can stratify patients with cirrhosis for future risk of liver decompensation,” the investigators concluded. “The ability to do this in the context of early, compensated cirrhosis with preserved liver synthetic function whilst also predicting long-term clinical outcomes has clinical utility for international health care systems.”
The study was funded by National Institute for Health Research (NIHR) Nottingham Digestive Diseases Biomedical Research Centre based at Nottingham University Hospitals NHS Trust and the University of Nottingham. The investigators declared no conflicts of interest.
SOURCE: Guha N et al. CGH. 2019 Feb 1. doi: 10.1016/j.cgh.2019.01.042.
FROM CLINICAL GASTROENTEROLOGY AND HEPATOLOGY
Will inpatient albumin help in decompensated cirrhosis?
PHILADELPHIA – , according to Vijay Shah, MD, chair of the division of gastroenterology and hepatology at Mayo Clinic, Rochester, Minn.
“These are interesting studies, but I don’t think we’re ready yet to use this broadly,” Dr. Shah said at the meeting jointly provided by Rutgers and Global Academy for Medical Education.
Current guidelines do describe the use of albumin for large-volume paracentesis and other specific inpatient situations; however, extrapolating its long-term use has been explored in two major studies that recently came out with contradictory findings.
In the ANSWER trial, as reported in the Lancet, investigators at 33 centers randomized patients with cirrhosis and uncomplicated ascites to either standard medical treatment with or without human albumin, at 40 g twice weekly for 2 weeks, followed by 40 g weekly for up to 18 months.
Those investigators found that long-term albumin prolonged overall survival, with a 38% reduction in the mortality hazard ratio, with similar rates of serious, nonliver adverse events, leading them to conclude that this intervention may act as a disease-modifying treatment in decompensated cirrhosis patients.
By contrast, however, a recent randomized, placebo-controlled trial reported in the Journal of Hepatology showed that albumin plus midodrine, an alpha-adrenergic vasoconstrictor, did not improve survival among patients with decompensated cirrhosis on the liver transplant waiting list, at least at the doses administered (midodrine 15-30 mg/day and albumin 40 g every 15 days for a year).
While this particular combination of albumin plus midodrine did decrease renin and aldosterone levels, the intervention did not prevent complications or improve survival, investigators said at the time. Complication rates were 37% and 43% for treatment and placebo, respectively (P = .402), with low rates of death in both groups and no significant difference in mortality at 1 year (P = .527).
Dr. Shah said the discrepant results may be attributable to specific differences in study design or enrollment.
“It’s just hand waving, but it may be related to the dose of albumin, or may be related to the types of patients – the second study was in patients who are waiting for liver transplantation,” he told attendees. “But I don’t think that there’s currently enough evidence to use albumin in your patients in the outpatient setting.”
There is a third study, recently published in the American Journal of Gastroenterology, looking at data for a large end-stage liver disease cohort with hyponatremia. Investigators observed a higher rate of hyponatremia resolution and improved 30-day survival in those who had received albumin (total mean amount, 225 g) versus those who had not.
Considering all of this evidence taken together, Dr. Shah said he would not favor using outpatient albumin at this point – though he advised attendees to watch for a currently recruiting phase 3 randomized study, known as PRECIOSA, which is evaluating long-term administration of human albumin 20% injectable solution, dosed by body weight, in patients with decompensated cirrhosis and ascites.
Dr. Shah indicated that he is a consultant for Afimmune, Durect Corporation, Enterome, GRI Bio, Merck Research Laboratories, Novartis Pharma, and Vital Therapeutics. Global Academy and this news organization are owned by the same company.
PHILADELPHIA – , according to Vijay Shah, MD, chair of the division of gastroenterology and hepatology at Mayo Clinic, Rochester, Minn.
“These are interesting studies, but I don’t think we’re ready yet to use this broadly,” Dr. Shah said at the meeting jointly provided by Rutgers and Global Academy for Medical Education.
Current guidelines do describe the use of albumin for large-volume paracentesis and other specific inpatient situations; however, extrapolating its long-term use has been explored in two major studies that recently came out with contradictory findings.
In the ANSWER trial, as reported in the Lancet, investigators at 33 centers randomized patients with cirrhosis and uncomplicated ascites to either standard medical treatment with or without human albumin, at 40 g twice weekly for 2 weeks, followed by 40 g weekly for up to 18 months.
Those investigators found that long-term albumin prolonged overall survival, with a 38% reduction in the mortality hazard ratio, with similar rates of serious, nonliver adverse events, leading them to conclude that this intervention may act as a disease-modifying treatment in decompensated cirrhosis patients.
By contrast, however, a recent randomized, placebo-controlled trial reported in the Journal of Hepatology showed that albumin plus midodrine, an alpha-adrenergic vasoconstrictor, did not improve survival among patients with decompensated cirrhosis on the liver transplant waiting list, at least at the doses administered (midodrine 15-30 mg/day and albumin 40 g every 15 days for a year).
While this particular combination of albumin plus midodrine did decrease renin and aldosterone levels, the intervention did not prevent complications or improve survival, investigators said at the time. Complication rates were 37% and 43% for treatment and placebo, respectively (P = .402), with low rates of death in both groups and no significant difference in mortality at 1 year (P = .527).
Dr. Shah said the discrepant results may be attributable to specific differences in study design or enrollment.
“It’s just hand waving, but it may be related to the dose of albumin, or may be related to the types of patients – the second study was in patients who are waiting for liver transplantation,” he told attendees. “But I don’t think that there’s currently enough evidence to use albumin in your patients in the outpatient setting.”
There is a third study, recently published in the American Journal of Gastroenterology, looking at data for a large end-stage liver disease cohort with hyponatremia. Investigators observed a higher rate of hyponatremia resolution and improved 30-day survival in those who had received albumin (total mean amount, 225 g) versus those who had not.
Considering all of this evidence taken together, Dr. Shah said he would not favor using outpatient albumin at this point – though he advised attendees to watch for a currently recruiting phase 3 randomized study, known as PRECIOSA, which is evaluating long-term administration of human albumin 20% injectable solution, dosed by body weight, in patients with decompensated cirrhosis and ascites.
Dr. Shah indicated that he is a consultant for Afimmune, Durect Corporation, Enterome, GRI Bio, Merck Research Laboratories, Novartis Pharma, and Vital Therapeutics. Global Academy and this news organization are owned by the same company.
PHILADELPHIA – , according to Vijay Shah, MD, chair of the division of gastroenterology and hepatology at Mayo Clinic, Rochester, Minn.
“These are interesting studies, but I don’t think we’re ready yet to use this broadly,” Dr. Shah said at the meeting jointly provided by Rutgers and Global Academy for Medical Education.
Current guidelines do describe the use of albumin for large-volume paracentesis and other specific inpatient situations; however, extrapolating its long-term use has been explored in two major studies that recently came out with contradictory findings.
In the ANSWER trial, as reported in the Lancet, investigators at 33 centers randomized patients with cirrhosis and uncomplicated ascites to either standard medical treatment with or without human albumin, at 40 g twice weekly for 2 weeks, followed by 40 g weekly for up to 18 months.
Those investigators found that long-term albumin prolonged overall survival, with a 38% reduction in the mortality hazard ratio, with similar rates of serious, nonliver adverse events, leading them to conclude that this intervention may act as a disease-modifying treatment in decompensated cirrhosis patients.
By contrast, however, a recent randomized, placebo-controlled trial reported in the Journal of Hepatology showed that albumin plus midodrine, an alpha-adrenergic vasoconstrictor, did not improve survival among patients with decompensated cirrhosis on the liver transplant waiting list, at least at the doses administered (midodrine 15-30 mg/day and albumin 40 g every 15 days for a year).
While this particular combination of albumin plus midodrine did decrease renin and aldosterone levels, the intervention did not prevent complications or improve survival, investigators said at the time. Complication rates were 37% and 43% for treatment and placebo, respectively (P = .402), with low rates of death in both groups and no significant difference in mortality at 1 year (P = .527).
Dr. Shah said the discrepant results may be attributable to specific differences in study design or enrollment.
“It’s just hand waving, but it may be related to the dose of albumin, or may be related to the types of patients – the second study was in patients who are waiting for liver transplantation,” he told attendees. “But I don’t think that there’s currently enough evidence to use albumin in your patients in the outpatient setting.”
There is a third study, recently published in the American Journal of Gastroenterology, looking at data for a large end-stage liver disease cohort with hyponatremia. Investigators observed a higher rate of hyponatremia resolution and improved 30-day survival in those who had received albumin (total mean amount, 225 g) versus those who had not.
Considering all of this evidence taken together, Dr. Shah said he would not favor using outpatient albumin at this point – though he advised attendees to watch for a currently recruiting phase 3 randomized study, known as PRECIOSA, which is evaluating long-term administration of human albumin 20% injectable solution, dosed by body weight, in patients with decompensated cirrhosis and ascites.
Dr. Shah indicated that he is a consultant for Afimmune, Durect Corporation, Enterome, GRI Bio, Merck Research Laboratories, Novartis Pharma, and Vital Therapeutics. Global Academy and this news organization are owned by the same company.
REPORTING FROM DIGESTIVE DISEASES: NEW ADVANCES
Dr. Julie Thompson Discusses Primary Biliary Cholangitis
At Digestive Diseases: New Advances (DDNA 2019), Dr. Julie A. Thompson of the University of Minnesota reviews key issues surrounding primary biliary cholangitis, including difficult symptoms to treat, an update on clinical trials, and patients that take medication and see no improvements.
At Digestive Diseases: New Advances (DDNA 2019), Dr. Julie A. Thompson of the University of Minnesota reviews key issues surrounding primary biliary cholangitis, including difficult symptoms to treat, an update on clinical trials, and patients that take medication and see no improvements.
At Digestive Diseases: New Advances (DDNA 2019), Dr. Julie A. Thompson of the University of Minnesota reviews key issues surrounding primary biliary cholangitis, including difficult symptoms to treat, an update on clinical trials, and patients that take medication and see no improvements.
AT DIGESTIVE DISEASES: NEW ADVANCES
HCC with no cirrhosis is more common in HIV patients
SEATTLE – Hepatocellular carcinoma (HCC) is on the rise in HIV-positive individuals, its incidence having quadrupled since 1996, and HIV-positive individuals have about a 300% increase risk of HCC, compared with the general population. However, more than 40% of patients with HIV who develop HCC have a Fibrosis-4 score (FIB-4) suggesting a lack of cirrhosis, according to a new retrospective analysis. By contrast, only about 13% of typical HCC patients have no cirrhosis.
The study also revealed some of the risk factors associated with HCC in this population, including longer duration of HIV viremia and lower CD4 cell counts, as well as markers of metabolic syndrome. “There was some signal that perhaps other markers of metabolic syndrome, obesity and diabetes, were more prevalent in those [who developed HCC] without advanced fibrosis or cirrhosis, suggesting that there may be other underlying etiologies of liver disease that we should be wary of when evaluating somebody for their risk of HCC,” Jessie Torgersen, MD, said in an interview.
Dr. Torgersen is an instructor of medicine at the University of Pennsylvania, Philadelphia. She presented the study at the Conference on Retroviruses & Opportunistic Infections.
The results of the study are tantalizing, but not yet practice changing. “I don’t think we have enough information from this study to recommend a dramatic overhaul of the current HCC screening guidelines, but with the anticipated elimination of hepatitis C, I think the emergence of [metabolic factors and their] contributions to our HIV-positive population’s risk of HCC needs to be better understood. Hopefully this will serve as a first step in further understanding those risks,” Dr. Torgersen said.
She also hopes to get a better handle on the biological mechanisms that might drive HCC in the absence of cirrhosis. “While the mechanisms are unclear as to why HCC would develop in HIV-positive patients without cirrhosis, there are a lot of biologically plausible mechanisms that seem to make [sense],” said Dr. Torgersen. The team hopes to get a better understanding of those mechanisms in order to information evaluation and screening for HCC.
The researchers analyzed data from the Veterans Affairs Cancer Registry as well as EMRs for HIV-positive veterans across the United States. The study included 2,497 participants with a FIB-4 score greater than 3.25, and 29,836 with an FIB-4 score less than or equal to 3.25. At baseline, subjects with FIB-4 greater than 3.25 were more likely to have an alcohol-related diagnosis (47% vs. 29%), be positive for hepatitis C virus RNA (59% vs. 30%), be positive for the hepatitis B surface antigen (10% versus 5%), have HIV RNA greater than or equal to 500 copies/mL (63% vs. 56%), and to have a CD4+ cell count less than 200 cells/m3 (39% vs. 26%).
A total of 278 subjects were diagnosed with HCC; 43% had an FIB-4 less than or equal to 3.25. Among those 43%, more patients had a body mass index of 30 or higher (16% vs. 12%), had diabetes (31% vs. 25%), and tested positive for the hepatitis B surface antigen (26% vs. 17%).
Among subjects with FIB-4 less than or equal to 3.25, factors associated with greater HCC risk included higher HIV RNA level (hazard ratio, 1.24 per 1.0 log10 copies/mL), CD4+ cell count less than 200 cells/m3 (HR, 1.78), hepatitis C virus infection (HR, 6.32), and positive hepatitis B surface antigen (HR, 4.93).
Among subjects with FIB-4 greater than 3.25, increased HCC risk was associated with HCV infection (HR, 6.18) and positive hepatitis B surface antigen (HR, 2.12).
The study was funded by the National Institutes of Health. Dr. Torgersen reported no financial disclosures.
SOURCE: Torgersen J et al. CROI 2019, Abstract 90.
SEATTLE – Hepatocellular carcinoma (HCC) is on the rise in HIV-positive individuals, its incidence having quadrupled since 1996, and HIV-positive individuals have about a 300% increase risk of HCC, compared with the general population. However, more than 40% of patients with HIV who develop HCC have a Fibrosis-4 score (FIB-4) suggesting a lack of cirrhosis, according to a new retrospective analysis. By contrast, only about 13% of typical HCC patients have no cirrhosis.
The study also revealed some of the risk factors associated with HCC in this population, including longer duration of HIV viremia and lower CD4 cell counts, as well as markers of metabolic syndrome. “There was some signal that perhaps other markers of metabolic syndrome, obesity and diabetes, were more prevalent in those [who developed HCC] without advanced fibrosis or cirrhosis, suggesting that there may be other underlying etiologies of liver disease that we should be wary of when evaluating somebody for their risk of HCC,” Jessie Torgersen, MD, said in an interview.
Dr. Torgersen is an instructor of medicine at the University of Pennsylvania, Philadelphia. She presented the study at the Conference on Retroviruses & Opportunistic Infections.
The results of the study are tantalizing, but not yet practice changing. “I don’t think we have enough information from this study to recommend a dramatic overhaul of the current HCC screening guidelines, but with the anticipated elimination of hepatitis C, I think the emergence of [metabolic factors and their] contributions to our HIV-positive population’s risk of HCC needs to be better understood. Hopefully this will serve as a first step in further understanding those risks,” Dr. Torgersen said.
She also hopes to get a better handle on the biological mechanisms that might drive HCC in the absence of cirrhosis. “While the mechanisms are unclear as to why HCC would develop in HIV-positive patients without cirrhosis, there are a lot of biologically plausible mechanisms that seem to make [sense],” said Dr. Torgersen. The team hopes to get a better understanding of those mechanisms in order to information evaluation and screening for HCC.
The researchers analyzed data from the Veterans Affairs Cancer Registry as well as EMRs for HIV-positive veterans across the United States. The study included 2,497 participants with a FIB-4 score greater than 3.25, and 29,836 with an FIB-4 score less than or equal to 3.25. At baseline, subjects with FIB-4 greater than 3.25 were more likely to have an alcohol-related diagnosis (47% vs. 29%), be positive for hepatitis C virus RNA (59% vs. 30%), be positive for the hepatitis B surface antigen (10% versus 5%), have HIV RNA greater than or equal to 500 copies/mL (63% vs. 56%), and to have a CD4+ cell count less than 200 cells/m3 (39% vs. 26%).
A total of 278 subjects were diagnosed with HCC; 43% had an FIB-4 less than or equal to 3.25. Among those 43%, more patients had a body mass index of 30 or higher (16% vs. 12%), had diabetes (31% vs. 25%), and tested positive for the hepatitis B surface antigen (26% vs. 17%).
Among subjects with FIB-4 less than or equal to 3.25, factors associated with greater HCC risk included higher HIV RNA level (hazard ratio, 1.24 per 1.0 log10 copies/mL), CD4+ cell count less than 200 cells/m3 (HR, 1.78), hepatitis C virus infection (HR, 6.32), and positive hepatitis B surface antigen (HR, 4.93).
Among subjects with FIB-4 greater than 3.25, increased HCC risk was associated with HCV infection (HR, 6.18) and positive hepatitis B surface antigen (HR, 2.12).
The study was funded by the National Institutes of Health. Dr. Torgersen reported no financial disclosures.
SOURCE: Torgersen J et al. CROI 2019, Abstract 90.
SEATTLE – Hepatocellular carcinoma (HCC) is on the rise in HIV-positive individuals, its incidence having quadrupled since 1996, and HIV-positive individuals have about a 300% increase risk of HCC, compared with the general population. However, more than 40% of patients with HIV who develop HCC have a Fibrosis-4 score (FIB-4) suggesting a lack of cirrhosis, according to a new retrospective analysis. By contrast, only about 13% of typical HCC patients have no cirrhosis.
The study also revealed some of the risk factors associated with HCC in this population, including longer duration of HIV viremia and lower CD4 cell counts, as well as markers of metabolic syndrome. “There was some signal that perhaps other markers of metabolic syndrome, obesity and diabetes, were more prevalent in those [who developed HCC] without advanced fibrosis or cirrhosis, suggesting that there may be other underlying etiologies of liver disease that we should be wary of when evaluating somebody for their risk of HCC,” Jessie Torgersen, MD, said in an interview.
Dr. Torgersen is an instructor of medicine at the University of Pennsylvania, Philadelphia. She presented the study at the Conference on Retroviruses & Opportunistic Infections.
The results of the study are tantalizing, but not yet practice changing. “I don’t think we have enough information from this study to recommend a dramatic overhaul of the current HCC screening guidelines, but with the anticipated elimination of hepatitis C, I think the emergence of [metabolic factors and their] contributions to our HIV-positive population’s risk of HCC needs to be better understood. Hopefully this will serve as a first step in further understanding those risks,” Dr. Torgersen said.
She also hopes to get a better handle on the biological mechanisms that might drive HCC in the absence of cirrhosis. “While the mechanisms are unclear as to why HCC would develop in HIV-positive patients without cirrhosis, there are a lot of biologically plausible mechanisms that seem to make [sense],” said Dr. Torgersen. The team hopes to get a better understanding of those mechanisms in order to information evaluation and screening for HCC.
The researchers analyzed data from the Veterans Affairs Cancer Registry as well as EMRs for HIV-positive veterans across the United States. The study included 2,497 participants with a FIB-4 score greater than 3.25, and 29,836 with an FIB-4 score less than or equal to 3.25. At baseline, subjects with FIB-4 greater than 3.25 were more likely to have an alcohol-related diagnosis (47% vs. 29%), be positive for hepatitis C virus RNA (59% vs. 30%), be positive for the hepatitis B surface antigen (10% versus 5%), have HIV RNA greater than or equal to 500 copies/mL (63% vs. 56%), and to have a CD4+ cell count less than 200 cells/m3 (39% vs. 26%).
A total of 278 subjects were diagnosed with HCC; 43% had an FIB-4 less than or equal to 3.25. Among those 43%, more patients had a body mass index of 30 or higher (16% vs. 12%), had diabetes (31% vs. 25%), and tested positive for the hepatitis B surface antigen (26% vs. 17%).
Among subjects with FIB-4 less than or equal to 3.25, factors associated with greater HCC risk included higher HIV RNA level (hazard ratio, 1.24 per 1.0 log10 copies/mL), CD4+ cell count less than 200 cells/m3 (HR, 1.78), hepatitis C virus infection (HR, 6.32), and positive hepatitis B surface antigen (HR, 4.93).
Among subjects with FIB-4 greater than 3.25, increased HCC risk was associated with HCV infection (HR, 6.18) and positive hepatitis B surface antigen (HR, 2.12).
The study was funded by the National Institutes of Health. Dr. Torgersen reported no financial disclosures.
SOURCE: Torgersen J et al. CROI 2019, Abstract 90.
REPORTING FROM CROI 2019
High-calorie diet may worsen Wilson disease
A high-calorie diet may cause earlier onset of more severe Wilson disease, according to a rodent study.
If translatable to humans, the results could explain “striking phenotype-genotype discrepancies” between patients with Wilson disease, and may give reason to monitor nutrition more closely, particularly dietary levels of fat and sugar, reported lead author Claudia Einer, a PhD candidate at the German Research Center for Environmental Health in Neuherberg, Germany, and her colleagues. Their findings clarify an association between impaired copper metabolism, which defines Wilson disease, and liver steatosis, a common finding in affected patients.
“Indeed, Wilson disease often may be misdiagnosed as nonalcoholic fatty liver disease (NAFLD),” the investigators wrote in Cellular and Molecular Gastroenterology and Hepatology. They noted that previous reports showed similar mitochondrial alterations in the livers of patients with NAFLD and those with Wilson disease. Furthermore, in a case report of two twins with Wilson disease, the twin with bulimia nervosa developed severe liver disease, whereas the other twin, who was undernourished, had mild liver disease. Considering these observations and other supportive evidence, the investigators tested this apparent relationship between a high-fat diet and liver damage in Wilson disease.
“The rationale of this study was that both enriched copper and fatty acids cause bioenergetic defects and therefore synergistically and detrimentally may coincide on hepatic mitochondria, which was found to be dramatically the case,” the investigators wrote.
The study involved homozygous Atp7b–/– rats, which mirror Wilson disease, and heterozygous Atp7b+/– rats, which served as control subjects because they lack copper accumulation. The high-calorie diet contained high fat and sugar levels to mirror “the eating habits in Western society, causing the ‘American-lifestyle-induced-obesity syndrome.’ ”
Within several weeks of starting the high-calorie diet, both control and Wilson disease rats showed higher liver triglyceride levels and visceral fat mass compared with rats on the normal diet, with liver histology also showing macrosteatosis and increased NAFLD Activity Score (NAS). Control rats maintained similar body and liver weights regardless of diet; in contrast, Wilson disease rats on the high-calorie diet showed increased liver weight, compared with Wilson disease rats on the normal diet. In addition, Wilson disease rats fed the high-calorie diet had clinical liver injury, supported by elevated aspartate aminotransferase (AST) levels and gross hepatic damage. Under the microscope, histology revealed widespread necrosis, apoptosis, inflammation, and fibrosis; findings were sufficient to constitute nonalcoholic steatohepatitis in all Wilson disease rats fed the high-calorie diet, compared with just one-third of the control rats receiving high calories. Additional testing showed that Wilson disease rats fed the high-calorie diet had disease onset 20 days sooner than did Wilson disease rats fed the normal diet.
“This is a remarkable disease acceleration,” the investigators noted, highlighting the median survival of 106 days in Wilson disease rats fed a normal diet.
Copper testing showed that Wilson disease rats fed the high-calorie diet had high serum levels of non–ceruloplasmin-bound copper, which is a sign of overt liver damage; based on histologic findings, the copper likely came from destroyed hepatocytes. Regardless of diet type, Wilson disease rats developed high levels of copper within the liver, suggesting comparable copper consumption via water sources. Regardless of genotype, the high-calorie diet led to higher mitochondrial copper levels than those of the normal diet, but Wilson disease rats showed the highest levels of copper sequestration in mitochondria, to an extreme degree.
“Importantly,” the investigators wrote, “such increased mitochondrial copper significantly correlated with a higher NAS and a progressive Histologic Activity Index score.”
Closer inspection showed that the mitochondria of Wilson disease rats were abnormal regardless of diet, but those fed the high-calorie diet had “a most severe mitochondrial phenotype,” including detached membranes and ballooned cristae.
“These structural impairments were paralleled by remarkable mitochondrial functional deficits,” the investigators reported, referring to a significant decrease in adenosine triphosphate production and an increase in mitochondrial H2O2. In response to these mitochondrial abnormalities, cholesterol-related enzymes quadrupled, most prominently for biliary excretion. The investigators summed up these hepatic events as a “toxic triad of adenosine triphosphate depletion, increased reactive oxygen species, and increased bile salts [that led] to an earlier onset of the disease and to enhanced disease progression.”
To complete the set of experiments, rats were given the copper chelator methanobactin. This treatment effectively mitigated structural and functional abnormalities in mitochondria, which drove serum levels of AST, copper, and bile salts toward normalcy. Although treatment halted overt liver damage, histology revealed that resolution was incomplete.
“We conclude that lipid accumulation in copper-burdened hepatocytes may represent a ‘second-hit’ in Wilson disease, inducing liver damage, and suggest that further research should establish whether dietary counseling of Wilson disease patients may be of therapeutic benefit,” the investigators concluded.
The study was funded by Deutsche Forschungsgemeinschaft and the WiFoMed Society. The investigators reported no conflicts of interest.
SOURCE: Einer et al. Cell Mol Gastroenterol Hepatol. 2019 Jan 11. doi: 10.1016/j.jcmgh.2018.12.005.
A high-calorie diet may cause earlier onset of more severe Wilson disease, according to a rodent study.
If translatable to humans, the results could explain “striking phenotype-genotype discrepancies” between patients with Wilson disease, and may give reason to monitor nutrition more closely, particularly dietary levels of fat and sugar, reported lead author Claudia Einer, a PhD candidate at the German Research Center for Environmental Health in Neuherberg, Germany, and her colleagues. Their findings clarify an association between impaired copper metabolism, which defines Wilson disease, and liver steatosis, a common finding in affected patients.
“Indeed, Wilson disease often may be misdiagnosed as nonalcoholic fatty liver disease (NAFLD),” the investigators wrote in Cellular and Molecular Gastroenterology and Hepatology. They noted that previous reports showed similar mitochondrial alterations in the livers of patients with NAFLD and those with Wilson disease. Furthermore, in a case report of two twins with Wilson disease, the twin with bulimia nervosa developed severe liver disease, whereas the other twin, who was undernourished, had mild liver disease. Considering these observations and other supportive evidence, the investigators tested this apparent relationship between a high-fat diet and liver damage in Wilson disease.
“The rationale of this study was that both enriched copper and fatty acids cause bioenergetic defects and therefore synergistically and detrimentally may coincide on hepatic mitochondria, which was found to be dramatically the case,” the investigators wrote.
The study involved homozygous Atp7b–/– rats, which mirror Wilson disease, and heterozygous Atp7b+/– rats, which served as control subjects because they lack copper accumulation. The high-calorie diet contained high fat and sugar levels to mirror “the eating habits in Western society, causing the ‘American-lifestyle-induced-obesity syndrome.’ ”
Within several weeks of starting the high-calorie diet, both control and Wilson disease rats showed higher liver triglyceride levels and visceral fat mass compared with rats on the normal diet, with liver histology also showing macrosteatosis and increased NAFLD Activity Score (NAS). Control rats maintained similar body and liver weights regardless of diet; in contrast, Wilson disease rats on the high-calorie diet showed increased liver weight, compared with Wilson disease rats on the normal diet. In addition, Wilson disease rats fed the high-calorie diet had clinical liver injury, supported by elevated aspartate aminotransferase (AST) levels and gross hepatic damage. Under the microscope, histology revealed widespread necrosis, apoptosis, inflammation, and fibrosis; findings were sufficient to constitute nonalcoholic steatohepatitis in all Wilson disease rats fed the high-calorie diet, compared with just one-third of the control rats receiving high calories. Additional testing showed that Wilson disease rats fed the high-calorie diet had disease onset 20 days sooner than did Wilson disease rats fed the normal diet.
“This is a remarkable disease acceleration,” the investigators noted, highlighting the median survival of 106 days in Wilson disease rats fed a normal diet.
Copper testing showed that Wilson disease rats fed the high-calorie diet had high serum levels of non–ceruloplasmin-bound copper, which is a sign of overt liver damage; based on histologic findings, the copper likely came from destroyed hepatocytes. Regardless of diet type, Wilson disease rats developed high levels of copper within the liver, suggesting comparable copper consumption via water sources. Regardless of genotype, the high-calorie diet led to higher mitochondrial copper levels than those of the normal diet, but Wilson disease rats showed the highest levels of copper sequestration in mitochondria, to an extreme degree.
“Importantly,” the investigators wrote, “such increased mitochondrial copper significantly correlated with a higher NAS and a progressive Histologic Activity Index score.”
Closer inspection showed that the mitochondria of Wilson disease rats were abnormal regardless of diet, but those fed the high-calorie diet had “a most severe mitochondrial phenotype,” including detached membranes and ballooned cristae.
“These structural impairments were paralleled by remarkable mitochondrial functional deficits,” the investigators reported, referring to a significant decrease in adenosine triphosphate production and an increase in mitochondrial H2O2. In response to these mitochondrial abnormalities, cholesterol-related enzymes quadrupled, most prominently for biliary excretion. The investigators summed up these hepatic events as a “toxic triad of adenosine triphosphate depletion, increased reactive oxygen species, and increased bile salts [that led] to an earlier onset of the disease and to enhanced disease progression.”
To complete the set of experiments, rats were given the copper chelator methanobactin. This treatment effectively mitigated structural and functional abnormalities in mitochondria, which drove serum levels of AST, copper, and bile salts toward normalcy. Although treatment halted overt liver damage, histology revealed that resolution was incomplete.
“We conclude that lipid accumulation in copper-burdened hepatocytes may represent a ‘second-hit’ in Wilson disease, inducing liver damage, and suggest that further research should establish whether dietary counseling of Wilson disease patients may be of therapeutic benefit,” the investigators concluded.
The study was funded by Deutsche Forschungsgemeinschaft and the WiFoMed Society. The investigators reported no conflicts of interest.
SOURCE: Einer et al. Cell Mol Gastroenterol Hepatol. 2019 Jan 11. doi: 10.1016/j.jcmgh.2018.12.005.
A high-calorie diet may cause earlier onset of more severe Wilson disease, according to a rodent study.
If translatable to humans, the results could explain “striking phenotype-genotype discrepancies” between patients with Wilson disease, and may give reason to monitor nutrition more closely, particularly dietary levels of fat and sugar, reported lead author Claudia Einer, a PhD candidate at the German Research Center for Environmental Health in Neuherberg, Germany, and her colleagues. Their findings clarify an association between impaired copper metabolism, which defines Wilson disease, and liver steatosis, a common finding in affected patients.
“Indeed, Wilson disease often may be misdiagnosed as nonalcoholic fatty liver disease (NAFLD),” the investigators wrote in Cellular and Molecular Gastroenterology and Hepatology. They noted that previous reports showed similar mitochondrial alterations in the livers of patients with NAFLD and those with Wilson disease. Furthermore, in a case report of two twins with Wilson disease, the twin with bulimia nervosa developed severe liver disease, whereas the other twin, who was undernourished, had mild liver disease. Considering these observations and other supportive evidence, the investigators tested this apparent relationship between a high-fat diet and liver damage in Wilson disease.
“The rationale of this study was that both enriched copper and fatty acids cause bioenergetic defects and therefore synergistically and detrimentally may coincide on hepatic mitochondria, which was found to be dramatically the case,” the investigators wrote.
The study involved homozygous Atp7b–/– rats, which mirror Wilson disease, and heterozygous Atp7b+/– rats, which served as control subjects because they lack copper accumulation. The high-calorie diet contained high fat and sugar levels to mirror “the eating habits in Western society, causing the ‘American-lifestyle-induced-obesity syndrome.’ ”
Within several weeks of starting the high-calorie diet, both control and Wilson disease rats showed higher liver triglyceride levels and visceral fat mass compared with rats on the normal diet, with liver histology also showing macrosteatosis and increased NAFLD Activity Score (NAS). Control rats maintained similar body and liver weights regardless of diet; in contrast, Wilson disease rats on the high-calorie diet showed increased liver weight, compared with Wilson disease rats on the normal diet. In addition, Wilson disease rats fed the high-calorie diet had clinical liver injury, supported by elevated aspartate aminotransferase (AST) levels and gross hepatic damage. Under the microscope, histology revealed widespread necrosis, apoptosis, inflammation, and fibrosis; findings were sufficient to constitute nonalcoholic steatohepatitis in all Wilson disease rats fed the high-calorie diet, compared with just one-third of the control rats receiving high calories. Additional testing showed that Wilson disease rats fed the high-calorie diet had disease onset 20 days sooner than did Wilson disease rats fed the normal diet.
“This is a remarkable disease acceleration,” the investigators noted, highlighting the median survival of 106 days in Wilson disease rats fed a normal diet.
Copper testing showed that Wilson disease rats fed the high-calorie diet had high serum levels of non–ceruloplasmin-bound copper, which is a sign of overt liver damage; based on histologic findings, the copper likely came from destroyed hepatocytes. Regardless of diet type, Wilson disease rats developed high levels of copper within the liver, suggesting comparable copper consumption via water sources. Regardless of genotype, the high-calorie diet led to higher mitochondrial copper levels than those of the normal diet, but Wilson disease rats showed the highest levels of copper sequestration in mitochondria, to an extreme degree.
“Importantly,” the investigators wrote, “such increased mitochondrial copper significantly correlated with a higher NAS and a progressive Histologic Activity Index score.”
Closer inspection showed that the mitochondria of Wilson disease rats were abnormal regardless of diet, but those fed the high-calorie diet had “a most severe mitochondrial phenotype,” including detached membranes and ballooned cristae.
“These structural impairments were paralleled by remarkable mitochondrial functional deficits,” the investigators reported, referring to a significant decrease in adenosine triphosphate production and an increase in mitochondrial H2O2. In response to these mitochondrial abnormalities, cholesterol-related enzymes quadrupled, most prominently for biliary excretion. The investigators summed up these hepatic events as a “toxic triad of adenosine triphosphate depletion, increased reactive oxygen species, and increased bile salts [that led] to an earlier onset of the disease and to enhanced disease progression.”
To complete the set of experiments, rats were given the copper chelator methanobactin. This treatment effectively mitigated structural and functional abnormalities in mitochondria, which drove serum levels of AST, copper, and bile salts toward normalcy. Although treatment halted overt liver damage, histology revealed that resolution was incomplete.
“We conclude that lipid accumulation in copper-burdened hepatocytes may represent a ‘second-hit’ in Wilson disease, inducing liver damage, and suggest that further research should establish whether dietary counseling of Wilson disease patients may be of therapeutic benefit,” the investigators concluded.
The study was funded by Deutsche Forschungsgemeinschaft and the WiFoMed Society. The investigators reported no conflicts of interest.
SOURCE: Einer et al. Cell Mol Gastroenterol Hepatol. 2019 Jan 11. doi: 10.1016/j.jcmgh.2018.12.005.
FROM CELLULAR AND MOLECULAR GASTROENTEROLOGY AND HEPATOLOGY
Women survive more often than men do when hospitalized with cirrhosis
Women hospitalized with cirrhosis are less likely to die in the hospital than are men, according to a retrospective analysis of more than half a million patients.
Although women more often had infections and comorbidities, men more often had liver decompensation, which contributed most significantly to their higher mortality rate, reported lead author Jessica Rubin, MD, of the University of California, San Francisco, and her colleagues.
Their findings add to an existing body of knowledge about sex-related differences in chronic liver disease. Women are less likely to develop chronic liver disease; however, when women do develop disease, it often follows a unique clinical course, with milder early disease followed by more severe end-stage disease, meaning many women are too sick for a transplant, or die on the waiting list.
“The reasons behind this ‘reversal’ in [sex] disparities is unknown,” the investigators wrote in Journal of Clinical Gastroenterology.
Considering recent findings that showed a correlation between hospitalization and mortality rates in chronic liver disease, the investigators believed that a comparison of hospital-related outcomes in men and women could explain why women apparently fare worse when dealing with end-stage disease.
The retrospective, cross-sectional study involved 553,017 patients (median age, 57 years) who were hospitalized for cirrhosis between 2009 and 2013. Data were drawn from the National Inpatient Sample (NIS). Inpatient mortality was the primary outcome.
In agreement with previous findings, the minority of patients were women (39%). Against expectations, however, women had a significantly lower mortality rate than that of men (5.7% vs. 6.4%; multivariable analysis odds ratio, 0.86). Better survival was associated with lower rates of decompensation (Baveno IV criteria; 34% vs. 38.8%) and other cirrhosis complications, such as hepatorenal syndrome, variceal bleeding, ascites, and spontaneous bacterial peritonitis. The only cirrhosis complication more common in women than men was hepatic encephalopathy (17.8% vs. 16.8%). Owing to fewer complications, fewer women required liver-related interventions, including transjugular intrahepatic portosystemic shunt (0.8% vs. 1.0%), upper endoscopy (12.8% vs. 13.0%), or paracentesis (17.6% vs. 20.6%).
While less frequent complications and a lower mortality rate might suggest that women were admitted with better overall clinical pictures, not all data supported this conclusion. For instance, women were more likely to have noncirrhosis comorbidities, including diabetes, hypertension, heart failure, stroke, and cancer. Furthermore, women had a higher rate of acute bacterial infection than that of men (34.9% vs. 28.2%), although this disparity should be considered in light of urinary tract infections (UTIs), which were significantly more common among women (18.8% vs. 8.0%).
“Interestingly, infections were a stronger predictor of inpatient mortality in women than men,” the investigators wrote. “Despite this, women in our cohort were less likely to die in the hospital than men.”
Additional analysis revealed etiological differences that may have contributed to differences in mortality rates. For instance, women less often had liver disease due to viral hepatitis (27.6% vs. 35.2%) or alcohol (24.1% vs. 38.7%). In contrast, women more often had autoimmune hepatitis (2.5% vs. 0.4%) or cirrhosis due to unspecified or miscellaneous reasons (45.7% vs. 25.7%).
“Our data suggest that differential rates of ongoing liver injury – including by cofactors such as active alcohol use – explain some but not all of the [sex] difference we observed in hepatic decompensation,” the investigators wrote, before redirecting focus to a clearer clinical finding. “The poor prognosis of decompensated cirrhosis ... provides a reasonable explanation for the higher rates of in-hospital mortality seen among men versus women,” they concluded.
Considering the surprising findings and previously known sex disparities, Dr. Rubin and her colleagues suggested that more research in this area is needed, along with efforts to deliver sex-appropriate care.
“The development of [sex]-specific cirrhosis management programs – focused on interventions to manage the interaction between cirrhosis and other common comorbidities, improving physical function both before and during hospitalization, and postacute discharge programs to facilitate resumption of independent living – would target differential needs of women and men living with cirrhosis, with the ultimate goal of improving long-term outcomes in these patients,” the investigators wrote.
The study was funded by a National Institute on Aging Paul B. Beeson Career Development Award in Aging and a National Institute of Diabetes and Digestive and Kidney Diseases National Research Service Award hepatology training grant. The investigators declared no conflicts of interest.
SOURCE: Rubin et al. J Clin Gastroenterol. 2019 Feb 22. doi: 10.1097/MCG.0000000000001192.
Women hospitalized with cirrhosis are less likely to die in the hospital than are men, according to a retrospective analysis of more than half a million patients.
Although women more often had infections and comorbidities, men more often had liver decompensation, which contributed most significantly to their higher mortality rate, reported lead author Jessica Rubin, MD, of the University of California, San Francisco, and her colleagues.
Their findings add to an existing body of knowledge about sex-related differences in chronic liver disease. Women are less likely to develop chronic liver disease; however, when women do develop disease, it often follows a unique clinical course, with milder early disease followed by more severe end-stage disease, meaning many women are too sick for a transplant, or die on the waiting list.
“The reasons behind this ‘reversal’ in [sex] disparities is unknown,” the investigators wrote in Journal of Clinical Gastroenterology.
Considering recent findings that showed a correlation between hospitalization and mortality rates in chronic liver disease, the investigators believed that a comparison of hospital-related outcomes in men and women could explain why women apparently fare worse when dealing with end-stage disease.
The retrospective, cross-sectional study involved 553,017 patients (median age, 57 years) who were hospitalized for cirrhosis between 2009 and 2013. Data were drawn from the National Inpatient Sample (NIS). Inpatient mortality was the primary outcome.
In agreement with previous findings, the minority of patients were women (39%). Against expectations, however, women had a significantly lower mortality rate than that of men (5.7% vs. 6.4%; multivariable analysis odds ratio, 0.86). Better survival was associated with lower rates of decompensation (Baveno IV criteria; 34% vs. 38.8%) and other cirrhosis complications, such as hepatorenal syndrome, variceal bleeding, ascites, and spontaneous bacterial peritonitis. The only cirrhosis complication more common in women than men was hepatic encephalopathy (17.8% vs. 16.8%). Owing to fewer complications, fewer women required liver-related interventions, including transjugular intrahepatic portosystemic shunt (0.8% vs. 1.0%), upper endoscopy (12.8% vs. 13.0%), or paracentesis (17.6% vs. 20.6%).
While less frequent complications and a lower mortality rate might suggest that women were admitted with better overall clinical pictures, not all data supported this conclusion. For instance, women were more likely to have noncirrhosis comorbidities, including diabetes, hypertension, heart failure, stroke, and cancer. Furthermore, women had a higher rate of acute bacterial infection than that of men (34.9% vs. 28.2%), although this disparity should be considered in light of urinary tract infections (UTIs), which were significantly more common among women (18.8% vs. 8.0%).
“Interestingly, infections were a stronger predictor of inpatient mortality in women than men,” the investigators wrote. “Despite this, women in our cohort were less likely to die in the hospital than men.”
Additional analysis revealed etiological differences that may have contributed to differences in mortality rates. For instance, women less often had liver disease due to viral hepatitis (27.6% vs. 35.2%) or alcohol (24.1% vs. 38.7%). In contrast, women more often had autoimmune hepatitis (2.5% vs. 0.4%) or cirrhosis due to unspecified or miscellaneous reasons (45.7% vs. 25.7%).
“Our data suggest that differential rates of ongoing liver injury – including by cofactors such as active alcohol use – explain some but not all of the [sex] difference we observed in hepatic decompensation,” the investigators wrote, before redirecting focus to a clearer clinical finding. “The poor prognosis of decompensated cirrhosis ... provides a reasonable explanation for the higher rates of in-hospital mortality seen among men versus women,” they concluded.
Considering the surprising findings and previously known sex disparities, Dr. Rubin and her colleagues suggested that more research in this area is needed, along with efforts to deliver sex-appropriate care.
“The development of [sex]-specific cirrhosis management programs – focused on interventions to manage the interaction between cirrhosis and other common comorbidities, improving physical function both before and during hospitalization, and postacute discharge programs to facilitate resumption of independent living – would target differential needs of women and men living with cirrhosis, with the ultimate goal of improving long-term outcomes in these patients,” the investigators wrote.
The study was funded by a National Institute on Aging Paul B. Beeson Career Development Award in Aging and a National Institute of Diabetes and Digestive and Kidney Diseases National Research Service Award hepatology training grant. The investigators declared no conflicts of interest.
SOURCE: Rubin et al. J Clin Gastroenterol. 2019 Feb 22. doi: 10.1097/MCG.0000000000001192.
Women hospitalized with cirrhosis are less likely to die in the hospital than are men, according to a retrospective analysis of more than half a million patients.
Although women more often had infections and comorbidities, men more often had liver decompensation, which contributed most significantly to their higher mortality rate, reported lead author Jessica Rubin, MD, of the University of California, San Francisco, and her colleagues.
Their findings add to an existing body of knowledge about sex-related differences in chronic liver disease. Women are less likely to develop chronic liver disease; however, when women do develop disease, it often follows a unique clinical course, with milder early disease followed by more severe end-stage disease, meaning many women are too sick for a transplant, or die on the waiting list.
“The reasons behind this ‘reversal’ in [sex] disparities is unknown,” the investigators wrote in Journal of Clinical Gastroenterology.
Considering recent findings that showed a correlation between hospitalization and mortality rates in chronic liver disease, the investigators believed that a comparison of hospital-related outcomes in men and women could explain why women apparently fare worse when dealing with end-stage disease.
The retrospective, cross-sectional study involved 553,017 patients (median age, 57 years) who were hospitalized for cirrhosis between 2009 and 2013. Data were drawn from the National Inpatient Sample (NIS). Inpatient mortality was the primary outcome.
In agreement with previous findings, the minority of patients were women (39%). Against expectations, however, women had a significantly lower mortality rate than that of men (5.7% vs. 6.4%; multivariable analysis odds ratio, 0.86). Better survival was associated with lower rates of decompensation (Baveno IV criteria; 34% vs. 38.8%) and other cirrhosis complications, such as hepatorenal syndrome, variceal bleeding, ascites, and spontaneous bacterial peritonitis. The only cirrhosis complication more common in women than men was hepatic encephalopathy (17.8% vs. 16.8%). Owing to fewer complications, fewer women required liver-related interventions, including transjugular intrahepatic portosystemic shunt (0.8% vs. 1.0%), upper endoscopy (12.8% vs. 13.0%), or paracentesis (17.6% vs. 20.6%).
While less frequent complications and a lower mortality rate might suggest that women were admitted with better overall clinical pictures, not all data supported this conclusion. For instance, women were more likely to have noncirrhosis comorbidities, including diabetes, hypertension, heart failure, stroke, and cancer. Furthermore, women had a higher rate of acute bacterial infection than that of men (34.9% vs. 28.2%), although this disparity should be considered in light of urinary tract infections (UTIs), which were significantly more common among women (18.8% vs. 8.0%).
“Interestingly, infections were a stronger predictor of inpatient mortality in women than men,” the investigators wrote. “Despite this, women in our cohort were less likely to die in the hospital than men.”
Additional analysis revealed etiological differences that may have contributed to differences in mortality rates. For instance, women less often had liver disease due to viral hepatitis (27.6% vs. 35.2%) or alcohol (24.1% vs. 38.7%). In contrast, women more often had autoimmune hepatitis (2.5% vs. 0.4%) or cirrhosis due to unspecified or miscellaneous reasons (45.7% vs. 25.7%).
“Our data suggest that differential rates of ongoing liver injury – including by cofactors such as active alcohol use – explain some but not all of the [sex] difference we observed in hepatic decompensation,” the investigators wrote, before redirecting focus to a clearer clinical finding. “The poor prognosis of decompensated cirrhosis ... provides a reasonable explanation for the higher rates of in-hospital mortality seen among men versus women,” they concluded.
Considering the surprising findings and previously known sex disparities, Dr. Rubin and her colleagues suggested that more research in this area is needed, along with efforts to deliver sex-appropriate care.
“The development of [sex]-specific cirrhosis management programs – focused on interventions to manage the interaction between cirrhosis and other common comorbidities, improving physical function both before and during hospitalization, and postacute discharge programs to facilitate resumption of independent living – would target differential needs of women and men living with cirrhosis, with the ultimate goal of improving long-term outcomes in these patients,” the investigators wrote.
The study was funded by a National Institute on Aging Paul B. Beeson Career Development Award in Aging and a National Institute of Diabetes and Digestive and Kidney Diseases National Research Service Award hepatology training grant. The investigators declared no conflicts of interest.
SOURCE: Rubin et al. J Clin Gastroenterol. 2019 Feb 22. doi: 10.1097/MCG.0000000000001192.
FROM JOURNAL OF CLINICAL GASTROENTEROLOGY