Cirrhosis in patients with rheumatoid arthritis receiving low dose methotrexate

G Chandran1, M J Ahern, P D Hall

  • 1Department of Medicine, Repatriation General Hospital, Daw Park, South Australia.

Insights

Low-dose methotrexate (MTX) can cause cirrhosis in rheumatoid arthritis (RA) patients. A study found a 2.63% prevalence of cirrhosis in RA patients taking low-dose pulse MTX, highlighting potential liver risks.

Area of Science:

  • Hepatology
  • Rheumatology
  • Pharmacology

Background:

  • Methotrexate (MTX) is a common disease-modifying antirheumatic drug (DMARD) used for rheumatoid arthritis (RA).
  • Long-term use of low-dose MTX has been associated with potential liver toxicity, including fibrosis and cirrhosis.
  • Understanding the risk factors and prevalence of MTX-induced liver injury is crucial for patient safety.

Observation:

  • Three rheumatoid arthritis patients developed cirrhosis while on low-dose methotrexate therapy.
  • Two of these cases were identified within a prospective study of 76 RA patients on low-dose pulse MTX.
  • This observation prompted a review of risk factors associated with MTX-induced cirrhosis.

Findings:

  • The point prevalence of cirrhosis in the studied cohort of RA patients on low-dose pulse MTX was 2.63%.
  • The report reviews identified risk factors contributing to the development of cirrhosis in patients using methotrexate.
  • Analysis focused on quantifying changes in pericellular and total collagen in relation to MTX exposure.

Implications:

  • Clinicians should maintain a high index of suspicion for liver damage in RA patients on long-term methotrexate.
  • Regular monitoring of liver function and consideration of cumulative methotrexate dose are essential.
  • Further research into predictive markers for MTX-induced liver cirrhosis may improve patient outcomes.

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