A 17 year old Asian patient with autoimmune chronic active hepatitis r
esistant to treatment with high dose corticosteroids and azathioprine
was given cyclosporin at a dose of 5 mg/kg/day. Within two weeks of st
arting the cyclosporin treatment a favourable clinical and biochemical
response was obtained and by one month serum aminotransferase activit
ies were within normal limits. An attempted reduction in the daily dos
e of cyclosporin resulted in a relapse of the patient's disease. Remis
sion was again attained by returning the dose of cyclosporin to 5 mg/k
g/day. No significant side effects of the treatment have been shown. C
yclosporin seems to have a role in the treatment of corticosteroid res
istant autoimmune chronic active hepatitis and its further evaluation
is warranted.