Current and future perspectives in autoimmune hepatitis

Vaccine-Related Autoimmune Hepatitis: Emerging Association with SARS-CoV-2 Vaccination or Coincidence?

BACKGROUND

There is an increasing number of liver injury cases resembling autoimmune hepatitis (AIH) following SARS-CoV-2 vaccination; however, an association has not yet been established.

METHODS/MATERIALS

A literature review was performed to identify articles regarding the association of AIH with vaccination, emphasizing on SARS-CoV-2 vaccines, and the proposed mechanisms. We then performed a literature search for AIH-like cases following SARS-CoV-2 vaccination, and we evaluated the included cases for AIH diagnosis using simplified diagnostic criteria (SDC), and for vaccination causality using the Naranjo score for adverse drug reactions.

RESULTS

We identified 51 AIH-like cases following SARS-CoV-2 vaccination. Forty cases (80%) were characterized as "probable", "at least probable", or "definite" for AIH diagnosis according to SDC. Forty cases (78.4%) were characterized as "probable", four (7.8%) as "possible", and three (5.8%) as "definite" for vaccine-related AIH according to the Naranjo score.

CONCLUSION

SARS-CoV-2 vaccine-related AIH carries several phenotypes and, although most cases resolve, immunosuppressive therapy seems to be necessary. Early diagnosis is mandatory and should be considered in any patient with acute or chronic hepatitis after SARS-CoV-2 vaccination, especially in those with pre-existing liver disease.

Challenges in the use of corticosteroids in the management of autoimmune hepatitis

Autoimmune hepatitis is widely assumed by health-care professionals to be a disease that is easily controlled through the use of corticosteroids and immunosuppressants but recent studies in the UK indicate highly variable treatment regimens and often unsatisfactory treatment outcomes, such as dependence on long-term high-dose steroids and ongoing need for liver transplantation in some cases. The therapeutic use of the systemically acting corticosteroid prednisolone results in unacceptable side effects in many patients. Recent evidence suggests that it is not always necessary to use high-dose steroids (>0.5 mg/kg/d) to attain remission; and side effects may also be minimised through more targeted therapy with the less systemically-absorbed corticosteroid, budesonide. The authors offer advice on the stratification of treatment for these patients and suggest changes to improve the services available for people with autoimmune hepatitis in the UK.