Publications by authors named "Billin A"

Article Synopsis
  • - Clinical trials for metabolic dysfunction-associated steatohepatitis (MASH) need accurate histologic scoring to assess participants and outcomes, but varying interpretations have affected results.
  • - The AI-based tool AIM-MASH showed strong consistency and agreement with expert pathologists in scoring MASH histology, achieving accuracy comparable to that of average pathologists.
  • - AIM-MASH demonstrated a strong ability to predict patient outcomes, correlating well with pathologist scores and noninvasive biomarkers, indicating it could enhance the efficiency and reliability of clinical trials for MASH.
View Article and Find Full Text PDF
Article Synopsis
  • This phase 1b study assessed the safety and effectiveness of cilofexor, a drug targeting farnesoid X receptors, in patients with compensated cirrhosis caused by primary sclerosing cholangitis over 12 weeks.
  • Patients received increasing doses of cilofexor, and while most reported side effects like pruritus and fatigue, there were no serious adverse events.
  • Results showed significant improvements in liver function markers, indicating that cilofexor may help manage cholestasis in these patients.
View Article and Find Full Text PDF

Background: Family caregivers of people with high-grade glioma often report high rates of psychological distress, which has been attributed to the unique aspects of the disease and onerous care demands. Clinical practice guidelines advocate for caregiver support from diagnosis through to end-of-life and bereavement. Yet, research has identified that caregivers' support needs are often overlooked.

View Article and Find Full Text PDF

The Wilderness Medical Society convened a panel to review available evidence supporting practices for medical direction of search and rescue teams. This panel included of members of the Wilderness Medical Society Search and Rescue Committee, the National Association of EMS Physicians Wilderness Committee, and leadership of the Mountain Rescue Association. Literature about definitions and terminology, epidemiology, currently accepted best practices, and regulatory and legal considerations was reviewed.

View Article and Find Full Text PDF
Article Synopsis
  • Clinical trials for nonalcoholic steatohepatitis (NASH) rely on consistent histologic scoring, but variability in these interpretations has affected trial results.* -
  • An AI tool called AIM-NASH was developed to provide standardized scoring for NASH histology, showing strong correlation with expert consensus scores and improving predictive accuracy for patient outcomes.* -
  • In a retrospective analysis, AIM-NASH helped meet previously unmet pathological endpoints in the ATLAS trial, suggesting it could reduce variability in scoring and enhance the assessment of treatment responses in clinical trials.*
View Article and Find Full Text PDF
Article Synopsis
  • * The study involved participants with varying degrees of hepatic impairment and healthy controls, revealing that cilofexor's concentration in the blood was significantly higher in those with more severe impairment compared to those with normal liver function.
  • * Although cilofexor was generally well tolerated with mild side effects, proper dosing and caution are necessary for patients with moderate or severe hepatic impairment, while those with mild impairment may not need dosage adjustments.
View Article and Find Full Text PDF

Objective: In retrospective studies, liver stiffness (LS) by vibration-controlled transient elastography (VCTE) is associated with the risk of liver decompensation in patients with non-alcoholic steatohepatitis (NASH), but prospective data in biopsy-confirmed cohorts with advanced fibrosis are limited. We aimed to establish thresholds for LS by VCTE that predict progression to cirrhosis among patients with bridging fibrosis and hepatic decompensation among patients with cirrhosis due to NASH.

Design: We used data from four randomised placebo-controlled trials of selonsertib and simtuzumab in participants with advanced fibrosis (F3-F4).

View Article and Find Full Text PDF

Treatment with acetyl-CoA carboxylase inhibitors (ACCi) in nonalcoholic steatohepatitis (NASH) may increase plasma triglycerides (TGs), with variable changes in apoB concentrations. ACC is rate limiting in de novo lipogenesis and regulates fatty acid oxidation, making it an attractive therapeutic target in NASH. Our objectives were to determine the effects of the ACCi, firsocostat, on production rates of plasma LDL-apoB in NASH and the effects of combined therapy with fenofibrate.

View Article and Find Full Text PDF

Cilofexor is a nonsteroidal farnesoid X receptor (FXR) agonist being evaluated for treatment of nonalcoholic steatohepatitis (NASH) and primary sclerosing cholangitis (PSC). This work characterized the pharmacokinetics, pharmacodynamic, safety, and tolerability of cilofexor in healthy participants. Cilofexor single and multiple once-daily doses (10 to 300 mg fasting or fed and twice-daily doses [15 and 50 mg; fed]; tablet formulation) were evaluated.

View Article and Find Full Text PDF

Biomarkers have the potential to accelerate drug development, as early indicators of improved clinical response, to improve patient safety, and for personalised medicine. However, few have been approved through the biomarker qualification pathways of the regulatory agencies. This paper outlines how biomarkers can accelerate drug development, and reviews the lessons learned by the EU IMI2-funded LITMUS consortium, which has had several interactions with regulatory agencies in both the US and EU regarding biomarker qualification in patients with non-alcoholic fatty liver disease and non-alcoholic steatohepatitis.

View Article and Find Full Text PDF

Background & Aims: Primary sclerosing cholangitis (PSC) is a major unmet medical need in clinical hepatology. Cilofexor is a nonsteroidal farnesoid X receptor agonist being evaluated for the treatment of PSC. Here, we describe the safety and preliminary efficacy of cilofexor in a 96-week, open-label extension (OLE) of a phase II trial.

View Article and Find Full Text PDF

De novo lipogenesis (DNL) converts carbon substrates to lipids. Increased hepatic DNL could contribute to pathogenic liver triglyceride accumulation in nonalcoholic steatohepatitis (NASH) and therefore may be a potential target for pharmacological intervention. Here, we measured hepatic DNL using heavy water in 123 patients with NASH with fibrosis or cirrhosis, calculated the turnover of hepatic triglycerides to allow repeat labeling studies, and determined the associations of hepatic DNL with metabolic, fibrotic, and imaging markers.

View Article and Find Full Text PDF
Article Synopsis
  • Pruritus, or itching, is common in liver diseases, especially those involving cholestasis, and the study examines serum IL-31 as a potential biomarker linked to this symptom in various liver conditions.
  • Results showed that patients with primary sclerosing cholangitis (PSC) and primary biliary cholangitis (PBC) had higher baseline IL-31 levels compared to those with non-alcoholic steatohepatitis (NASH) and healthy individuals, and IL-31 correlated with pruritus severity.
  • The findings suggest that IL-31 levels could be influenced by treatment with the FXR agonist cilofexor, potentially offering therapeutic insights for managing itching in liver disease patients.
View Article and Find Full Text PDF
Article Synopsis
  • Bile acids, particularly the deoxycholate (DCA), play a significant role in the worsening of Non-Alcoholic Fatty Liver Disease (NAFLD) and their levels increase with disease severity and fibrosis.
  • A detailed study involving various microbiome analyses found that certain bile acids derived from DCA were linked to increased disease activity, suggesting a biological mechanism underlying these changes.
  • The findings highlight the importance of bile acids and related gut microbiota in NAFLD progression, paving the way for potential biomarkers and therapeutic approaches for conditions like Non-Alcoholic Steatohepatitis (NASH).
View Article and Find Full Text PDF

Background & Aims: Non-alcoholic steatohepatitis (NASH) is associated with increased risk of liver-related and cardiovascular morbidity and mortality. Given the complex pathophysiology of NASH, combining therapies with complementary mechanisms may be beneficial. This trial evaluated the safety and efficacy of semaglutide, a glucagon-like peptide-1 receptor agonist, alone and in combination with the farnesoid X receptor agonist cilofexor and/or the acetyl-coenzyme A carboxylase inhibitor firsocostat in patients with NASH.

View Article and Find Full Text PDF

Noninvasive detection of nonalcoholic steatohepatitis (NASH), the progressive form of nonalcoholic fatty liver disease, promises to improve patient screening, accelerate drug trials, and reduce health care costs. On the basis of protease dysregulation of the biological pathways of fibrotic NASH, we developed the Glympse Bio Test System (GBTS) for multiplexed quantification of liver protease activity. GBTS-NASH comprises a mixture of 19 mass-barcoded PEGylated peptides that is administered intravenously and senses liver protease activity by releasing mass-barcoded reporters into urine for analysis by mass spectrometry.

View Article and Find Full Text PDF
Article Synopsis
  • Tirabrutinib is an irreversible, small-molecule BTK inhibitor approved in Japan for treating B-cell malignancies and is under investigation for inflammatory diseases.
  • A pharmacokinetic/pharmacodynamic (PK/PD) model was created to inform dose selection based on clinical data from two phase I studies, which effectively predicted drug behavior in the body.
  • The model suggested a minimum daily dose of 40 mg to achieve over 90% BTK occupancy, and a positive correlation was found between increased BTK occupancy duration and enhanced treatment efficacy for rheumatoid arthritis.
View Article and Find Full Text PDF
Article Synopsis
  • Primary sclerosing cholangitis (PSC) is a condition that leads to progressive liver damage, and researchers analyzed RNA from liver tissues of 74 PSC patients to explore relationships between gene expression and clinical outcomes, independent of fibrosis levels.
  • * To isolate the impact of fibrosis on gene expression, a computational method was used, revealing that certain gene patterns could predict the timing of PSC-related clinical events.
  • * The analysis identified two distinct patient groups with differing risks of events despite having similar fibrosis stages, emphasizing pathways related to eIF2 signaling and the unfolded protein response as potential areas for further investigation.
View Article and Find Full Text PDF

Background: Eicosanoid and related docosanoid polyunsaturated fatty acids (PUFAs) and their oxygenated derivatives have been proposed as noninvasive lipidomic biomarkers of nonalcoholic steatohepatitis (NASH). Therefore, we investigated associations between plasma eicosanoids and liver fibrosis to evaluate their utility in diagnosing and monitoring NASH-related fibrosis.

Methods: Our analysis used baseline eicosanoid data from 427 patients with biopsy-confirmed nonalcoholic fatty liver disease (NAFLD), and longitudinal measurements along with liver fibrosis staging from 63 patients with NASH and stage 2/3 fibrosis followed for 24 weeks in a phase II trial.

View Article and Find Full Text PDF

Background And Aims: We evaluated the safety and efficacy of cilofexor (formerly GS-9674), a small-molecule nonsteroidal agonist of farnesoid X receptor, in patients with nonalcoholic steatohepatitis (NASH).

Approach And Results: In this double-blind, placebo-controlled, phase 2 trial, 140 patients with noncirrhotic NASH, diagnosed by magnetic resonance imaging-proton density fat fraction (MRI-PDFF) ≥8% and liver stiffness ≥2.5 kPa by magnetic resonance elastography (MRE) or historical liver biopsy, were randomized to receive cilofexor 100 mg (n = 56), 30 mg (n = 56), or placebo (n = 28) orally once daily for 24 weeks.

View Article and Find Full Text PDF

Primary sclerosing cholangitis (PSC) represents a major unmet medical need. In a phase II double-blind, placebo-controlled study, we tested the safety and efficacy of cilofexor (formerly GS-9674), a nonsteroidal farnesoid X receptor agonist in patients without cirrhosis with large-duct PSC. Patients were randomized to receive cilofexor 100 mg (n = 22), 30 mg (n = 20), or placebo (n = 10) orally once daily for 12 weeks.

View Article and Find Full Text PDF
Article Synopsis
  • The authors of the original article identified a mistake regarding the data and materials availability section.
  • This discrepancy was noted on page 12 of the article.
  • The authors are bringing attention to this issue after the article's publication.
View Article and Find Full Text PDF
Article Synopsis
  • The study investigates how prolyl hydroxylase inhibitors, which stabilize hypoxia-inducible factors (HIFs), can enhance skeletal muscle repair after injury in both mice and humans, potentially countering issues like fibrosis and fatty tissue buildup.* -
  • In mouse experiments, the inhibitor GSK1120360A significantly improved muscle recovery post-injury, working through myeloid HIF1α and iNOS activity rather than EPO modulation.* -
  • Tests in healthy human volunteers showed that the inhibitor daprodustat reduced muscle damage markers after exercise, but did not improve functional recovery, indicating some similarities and differences in response between species.*
View Article and Find Full Text PDF

Skeletal muscle stem cell (MuSC) function declines with age and contributes to impaired muscle regeneration in older individuals. Acting through AMPK/p27, we have identified a pathway regulating the balance between autophagy, apoptosis, and senescence in aged MuSCs. While p27 is implicated in MuSC aging, its precise role and molecular mechanism have not been elucidated.

View Article and Find Full Text PDF

Bruton's tyrosine kinase (BTK) is a clinically validated target for B-cell leukemias and lymphomas with FDA-approved small-molecule inhibitors ibrutinib and acalabrutinib. Tirabrutinib (GS-4059/ONO-4059, Gilead Sciences, Inc., Foster City, CA) is a second-generation, potent, selective, irreversible BTK inhibitor in clinical development for lymphoid malignancies, including chronic lymphocytic leukemia (CLL) and diffuse large B-cell lymphoma (DLBCL).

View Article and Find Full Text PDF