Acta gastro-enterologica Belgica · 2026
Auto-immune hepatitis following COVID-19 Vaccination and SARS-COV2 infection : A narrative Review.
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Bendoumou M, Langlet P, Gustot T
Аннотация
BACKGROUND AND OBJECTIVES: Since the onset of the COVID-19 pandemic, both SARS-CoV-2 infection and vaccination have been implicated as potential triggers for de novo autoimmune hepatitis (AIH). This review summarizes published cases, outlining clinical and biological features, treatment approaches, and outcomes.
METHODS: A PubMed search identified reports of new-onset AIH following SARS-CoV-2 infection or COVID-19 vaccination up to February 1, 2025. Inclusion criteria encompassed case reports, series, and reviews. Data were extracted on demographics, vaccine type, onset timing, laboratory findings, histology, treatments, and outcomes.
RESULTS: A total of 74 post-vaccination AIH cases and 22 post-infection cases were included. Post-vaccination AIH predominantly affected older women (median age 62) and occurred mainly after mRNA vaccines, with a median onset of 14 days. Most patients showed marked transaminase elevation, high IgG, and positive ANA (74.3%). Liver biopsies (performed in 92% of cases) showed features compatible with AIH. A total of 80% of the 50 cases of our study with available serology and liver histology were classified as probable / definite AIH, according to the simplified AIH score. Corticosteroid therapy was effective in most cases (survival 95.9%). Post-infection AIH cases showed similar features but affected younger individuals (median age 47), with uniformly favorable responses to immunosuppression.
CONCLUSIONS: New-onset AIH can occur following both SARS-CoV-2 infection or vaccination. Although these events remain rare, recognition of this association is essential for timely diagnosis and management.
METHODS: A PubMed search identified reports of new-onset AIH following SARS-CoV-2 infection or COVID-19 vaccination up to February 1, 2025. Inclusion criteria encompassed case reports, series, and reviews. Data were extracted on demographics, vaccine type, onset timing, laboratory findings, histology, treatments, and outcomes.
RESULTS: A total of 74 post-vaccination AIH cases and 22 post-infection cases were included. Post-vaccination AIH predominantly affected older women (median age 62) and occurred mainly after mRNA vaccines, with a median onset of 14 days. Most patients showed marked transaminase elevation, high IgG, and positive ANA (74.3%). Liver biopsies (performed in 92% of cases) showed features compatible with AIH. A total of 80% of the 50 cases of our study with available serology and liver histology were classified as probable / definite AIH, according to the simplified AIH score. Corticosteroid therapy was effective in most cases (survival 95.9%). Post-infection AIH cases showed similar features but affected younger individuals (median age 47), with uniformly favorable responses to immunosuppression.
CONCLUSIONS: New-onset AIH can occur following both SARS-CoV-2 infection or vaccination. Although these events remain rare, recognition of this association is essential for timely diagnosis and management.