Phase II, Open Label, Adaptive Design, Multiple Dose Finding Study to Investigate Synthetic PreImplantation Factor (sPIF) in Patients With Autoimmune Hepatitis (AIH)

The study is an open label, dose finding trial in patients with AIH who have an elevated ALT levels. Patients will be administered a starting dose of sPIF 1mg/kg (n=10/cohort) for 14 days assessing safety, tolerability and clinical response based on the effect on ALT levels until day 84. This will be followed by enrolling (n=10) patients administering 2mg/kg sPIF for 14 days assessing safety, tolerability and clinical response based on the effect on ALT levels until day 84. This be followed by an interim analysis that will determine clinical efficacy by comparing the 1mg and 2mg dose results; testing the decrease in mean ALT percent and determining the number of patients in remission defined as normalized ALT level. The successful cohort will enroll additional patients to enable power analysis. If no significant improvement is observed in the two cohorts, N=10 patients will be enrolled and administered 3mg/kg sPIF for 14 days assessing safety and tolerability. If no significant improvement is noted and safety and tolerability is maintained additional 10 patients will be enrolled at 4mg/kg. Following the same analysis, the maximal dose to be administered will be 5mg/kg.