Liver Disease Complicating Familial Mediterranean Fever: A Study on 66 Patients Out of 533 Adult From the JIR Cohort.

BACKGROUND

Familial Mediterranean fever (FMF) is the most common monogenic autoinflammatory disease, associated with MEFV mutations. FMF patients can experience liver involvement, potentially leading to cirrhosis.

OBJECTIVES

This study aimed to evaluate liver involvement in FMF patients at a French tertiary centre for adult FMF.

METHODS

We conducted an observational study with FMF patients displaying 2 pathogenic MEFV mutations at the National Reference Center for Autoinflammatory Diseases and Inflammatory Amyloidosis (CEREMAIA) in Paris and included in the JIR cohort. MEFV heterozygous patients and those with other liver disease causes were excluded.

RESULTS

Among 533 FMF patients 12.4% had chronic liver abnormalities, with 30% who developed cirrhosis 54 years [36-57] in median after disease onset. Forty-seven per cent were colchicine resistant, and 41% received interleukin-1 inhibitors. Cirrhotic patients experienced delayed hepatopathy diagnosis, prolonged FMF diagnosis delay and late-onset treatment initiation compared to those with only liver function test abnormalities. Colchicine resistance and interleukin-1 inhibitor use were more common in cirrhotic patients. Body mass index and AA amyloidosis rates did not differ significantly between groups. Twenty-one patients had undergone liver biopsies including 14 cirrhotic patients revealing steatohepatitis in 12 cases and probable steatohepatitis in 4. Other lesions, like iron overload and sinusoidal dilatation, were sporadically observed.

CONCLUSION

FMF patients are at risk of chronic liver disease. Regular liver function monitoring is crucial, particularly in case of persistent inflammation, due to the risk of progression to cirrhosis and its associated morbidity and mortality.