Liver Fibrosis and Gut Microbiota in Patients With Psoriasis Vulgaris and Rheumatoid Arthritis on Methotrexate

Rheumatoid Arthritis Clinical Trial

Official title: A Comparison Study of Liver Fibrosis and Its Association With Gut Microbiota in Patients With Psoriasis Vulgaris and Rheumatoid Arthritis on Methotrexate

Status Not yet recruiting

Clinical Trial Summary

While methotrexate (MTX) remains a treatment of choice for patients with rheumatoid arthritis (RA), psoriasis (PsO) and psoriatic arthritis (PsA), long-term MTX use has been shown to be associated with liver fibrosis and cirrhosis in these patients. In addition, gut dysbiosis has been found to be associated with liver fibrosis and cirrhosis via the gut-liver axis, underscoring the potential role of gut microbiota and bacterial translocation in the pathogenesis of chronic liver diseases in these patients.

In this study, we aim to assess the prevalence of advanced liver fibrosis or cirrhosis among these patients on MTX treatment compared to those without, using transient elastography. We also aim to identify the possible risk factor(s) for advanced liver fibrosis or cirrhosis among them. Further, we aim to characterize the difference in fecal microbiota patterns among these three groups of patients.

Using a cross-sectional, prospective cohort design, this study will enroll approximately 600 eligible patients, including 300 patients with PsO/PsA and 300 patients with RA, to examine the following hypotheses:

1. Patients on higher cumulative dose of MTX will have higher prevalence of advanced liver fibrosis or cirrhosis compared to those on lower cumulative dose of MTX;

2. Patients with MTX use will have higher prevalence of advanced liver fibrosis or cirrhosis compared to those without MTX use;

3. The fecal microbiota composition will be different between patients with and without MTX treatment; and

4. The fecal microbiota composition will be different between patients with and without advanced fibrosis/cirrhosis while on MTX treatment.

Clinical Trial Description

n/a

Related Conditions & MeSH terms

• Arthritis
• Arthritis, Rheumatoid
• Fibrosis
• Fibrosis, Liver
• Liver Cirrhosis
• Psoriasis
• Psoriasis Vulgaris
• Rheumatoid Arthritis

• NCT number: NCT04493762
• Study type: Observational
• Source: The University of Hong Kong
• Contact: Sze-Man Wong, MSc, MRCP
• Phone: +852 22555154
• Email: wongsm11@ha.org.hk
• Status: Not yet recruiting
• Start date: August 13, 2020
• Completion date: December 11, 2022