Journal
JOURNAL OF CLINICAL MEDICINE
Volume 9, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/jcm9051449
Keywords
overlap syndrome; autoimmune liver disease; immunosuppression; corticosteroid; ursodeoxycholic acid
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The treatment of overlap syndromes is guided by small observational studies whose data have never been synthesized in a rigorous, quantitative manner. We conducted a systematic review and meta-analysis to evaluate the efficacy of available treatments for these rare and morbid conditions. We searched the literature for studies comparing >= 2 therapies for autoimmune hepatitis (AIH)-primary biliary cholangitis (PBC), AIH-primary sclerosing cholangitis (PSC), PBC-PSC, AIH-PBC-PSC, autoimmune cholangitis (AIC), or autoimmune sclerosing cholangitis (ASC) with respect to various clinical outcomes, including biochemical improvement and transplant-free survival. A total of 28 studies met the inclusion criteria for AIH-PBC, AIH-PSC, AIC, and ASC. AIH-PBC patients tended to experience more biochemical improvement with ursodeoxycholic acid (UDCA) + [corticosteroids and/or antimetabolites], i.e., combination therapy, than with corticosteroids +/- azathioprine (RR = 4.00, 95% CI 0.93-17.18). AIH-PBC patients had higher transplant-free survival with combination therapy than with UDCA, but only when studies with follow-up periods <= 90 months were excluded (RR = 6.50, 95% CI 1.47-28.83). Combination therapy may therefore be superior to both UDCA and corticosteroids +/- azathioprine for the treatment of AIH-PBC, but additional studies are needed to show this definitively and to elucidate optimal treatments for other overlap syndromes.
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