Title
Clinical Trials of Autologous Cultured Adipose-derived Stem Cells (ANTG-ASC) on Complex Fistula
Phase II Study to Evaluate Efficacy and Safety of ANTG-ASC (Autologous Cultured Adipose-derived Stem Cells) on the Complex Fistula Patients
Phase
Phase 2Lead Sponsor
Anterogen Co., Ltd.Study Type
InterventionalStatus
TerminatedIndication/Condition
Complex Perianal FistulaIntervention/Treatment
allogeneic adipose derived mesenchymal stem cell ...Study Participants
15Mesenchymal stem cells derived from adipose tissue are pluripotent to differentiate into myocytes, adipocytes or others. They have an immunosuppressive activity. Complex perianal fistula is difficult to cure and easy to relapse. Autologous adipose stem cells have shown efficacy and safety on Crohn's fistula in phase 1 study. Based on these results, the investigators would apply autologous adipose stem cells on complex perianal fistula to evaluate their efficacy and safety.
low dose group: 1x10e7 cells/mL At 6 weeks after first stem cell injection, fistula closing was assessed. If it is not completely closed, second injection would be applied in 2 weeks. Additional dosage would be doubled to first dosage.
high dose group: 2x10e7 cells/mL At 6 weeks after first stem cell injection, fistula closing was assessed. If it is not completely closed, second injection would be applied in 2 weeks. Additional dosage would be doubled to first dosage.
Low dose group
high dose group
Inclusion Criteria: a patient who has complex perianal fistula a patient who is negative in pregnancy test a patient who has submitted a written consent Exclusion Criteria: a patient who has participated in other clinical studies within 30 days before this clinical trial or has not passed 5 fold period of a half-life of other investigational drugs. a patient who has a history of variant Creutzfeldt Jacobs disease or related diseases a patient who is allergic to anesthetics, bovine derived proteins or a fibrin glue a patient who has an autoimmune disease a patient who has infectious diseases such as hepatitis B virus (HBV), hepatitis C virus (HCV) or human immunodeficiency virus (HIV) a patient who has sepsis or active tuberculosis a patient who is pregnant or breast feeding a patient who has inflammatory Bowel disease over 2cm in diameter of fistula