Factors Associated With Potential Progressive Course of Primary Biliary Cholangitis: Data From Real-world US Database

Risk Stratification in Primary Biliary Cholangitis

Primary Biliary Cholangitis (PBC) is a chronic cholestatic liver disease with a heterogeneous presentation, symptomatology, disease progression, and response to therapy. The current risk stratification assessment, aimed at identifying patients with a higher risk of disease progression, encompasses an in-depth analysis of demographic data, clinical and laboratory findings, antibody profiles, and the evaluation of liver fibrosis using both invasive and noninvasive techniques. Treatment response scores after one year of therapy remain to date a major factor influencing the prognosis of PBC patients. While the initial therapeutic approach with ursodeoxycholic acid (UDCA) is universally applied, new second-line treatment options have recently emerged, with many others under investigation. Consequently, the prevailing one-size-fits-all approach is poised to be supplanted by tailored strategies, ensuring high-risk patients receive the most appropriate treatment regimen from diagnosis. This will require the development of a risk prediction model to assess, at the time of diagnosis, the course, outcome, and response to first and additional treatments of PBC patients. This manuscript provides a comprehensive overview of the current and emerging tools used for risk stratification in PBC and speculates on how these developments might shape the disease landscape in the near future.

Gender and Autoimmune Liver Diseases: Relevant Aspects in Clinical Practice

Autoimmune liver diseases (AILDs) include autoimmune hepatitis, primary biliary cholangitis and primary sclerosing cholangitis. The etiologies of AILD are not well understood but appear to involve a combination of genetic and environmental factors. AILDs commonly affect young individuals and are characterized by a highly variable clinical course. These diseases significantly influence quality of life and can progress toward liver decompensation or the onset of hepatocellular or cholangiocarcinoma; a significant number of patients eventually progress to end-stage liver disease, requiring liver transplantation. In this review, we focus on the sex characteristics and peculiarities of AILD patients and highlight the relevance of a sex-specific analysis in future studies. Understanding the sex differences underlying AILD immune dysregulation may be critical for developing more effective treatments.

Predictors for incomplete response to ursodeoxycholic acid in primary biliary cholangitis. Data from a national registry of liver disease

Background

The current standard of treatment in primary biliary cholangitis (PBC) is ursodeoxycholic acid (UDCA), although a considerable proportion of patients show incomplete response resulting in disease progression.

Objective

This study aimed to assess the prevalence of incomplete response to UDCA and determine associated patients' characteristics.

Methods

Patients with PBC as main diagnosis were included from a national multicentric patient registry—Liver.pt. Main endpoints included incomplete response to UDCA treatment according to Barcelona, Paris I and Paris II criteria, Globe and UK PBC scores and the association between baseline characteristics and incomplete response according to Paris II criteria.

Results

A total of 434 PBC patients were identified, with a mean age of 55 years and 89.2% females. Nearly half of patients were asymptomatic at diagnosis and 93.2% had positive anti‐mitochondrial antibodies. Almost all patients (95.6%) had been prescribed at least one drug for PBC treatment. At the last follow‐up visit, 93.3% were under treatment of which 99.8% received UDCA. Incomplete response to UDCA was observed in 30.7%, 35.3%, 53.7% and 36.4% of patients according to Barcelona, Paris I, Paris II criteria and Globe score, respectively. After adjusting for age and sex, and accordingly to Paris II criteria, the risk for incomplete biochemical response was 25% higher for patients with cirrhosis at diagnosis (odds ratio [OR] = 1.25; 95% confidence interval [95%CI]: 1.02–1.54; p = 0.033) and 35% (95%CI:1.06–1.72; p = 0.016) and 5% (OR = 1.05; 95%CI:1.01–1.10; p = 0.013) for those with elevated gamma‐glutamyl transferase (GGT) and alkaline phosphatase (ALP).

Conclusion

A considerable proportion of patients showed incomplete biochemical response to UDCA treatment according to Paris II criteria. Cirrhosis, elevated GGT and ALP at diagnosis were identified as associated risk factors for incomplete response. Early identification of patients at risk of incomplete response could improve treatment care and guide clinical decision to a more careful patient monitorization.

Summarise the established knowledge on this subject

Primary biliary cholangitis is a liver disease that can progress to end‐stage liver disease, with premature death or need for liver transplantation.

Treatment with ursodeoxycholic acid (UDCA) significantly increases liver transplant‐free survival. However, incomplete response to UDCA reduces this beneficial effect.

What are the significant and/or new findings of this study?

By evaluating prevalence and risk factors for UDCA incomplete response through a large multicentric national registry it was found that 53.7% of patients were incomplete responders, according to Paris II criteria, with cirrhosis, elevated gamma‐glutamyl transferase and alkaline phosphatase at diagnosis as the main risk factors.

These findings suggest that patients diagnosed at an advanced stage should be closely monitored and might benefit from novel therapies to improve outcomes if incomplete response is present.

A Comprehensive Review of Patient-reported Outcomes in Patients With Chronic Liver Diseases

Chronic liver disease (CLD) is a global health problem with chronic viral hepatitis, alcohol-related liver disease, and nonalcoholic fatty liver disease being important causes of mortality. Besides its clinical burden, patients with CLD also suffer from impairment of their health-related quality of life and other patient-reported outcomes (PRO). In this context, a combination of both clinical and PROs will allow assessment of the comprehensive burden of liver disease on patients. PROs cannot be observed directly and must be assessed by validated questionnaires or tools. Various tools have been developed to accurately measure PROs in patients with CLD, including generic and disease-specific questionnaires such as Short Form-36, Chronic Liver Disease Questionnaire and its subtypes. It is important to note that PRO instruments can be used to appreciate the impact of the natural history of CLD or of treatment on patients' experiences. This review summarizes PRO assessment in different types of liver disease and different tools useful to investigators and clinicians who are interested in this aspect of patients' experience.