Metagen Therapeutics, Inc.
Ulcerative colitis is a condition that causes inflammation and ulcers in the large intestine. MGT-006 is an investigational oral capsule containing viable gut microbiota from screened human donors. This study will evaluate the safety and tolerability of MGT-006 in adults with moderately active ulcerative colitis. It will also examine whether gut microbiota from MGT-006 engraft in participants' intestines and explore changes in ulcerative colitis symptoms and inflammation. The study has two parts. In Phase 1b, participants will be randomly assigned to receive MGT-006 either without antibiotic pretreatment or after five days of oral vancomycin or AFM (Amoxicillin/Fosfomycin/Metronidazole) pretreatment. MGT-006 will be taken for eight weeks, followed by four weeks of observation. Phase 2a is planned to explore different doses and potentially different dosing regimens of MGT-006, using the pretreatment approach selected from Phase 1b. The final Phase 2a design will depend on the Phase 1b findings and will be specified in an amended protocol before Phase 2a begins.
The study is a multicenter, randomized, exploratory Phase 1b/2a study planned at approximately 30 sites in Japan and the United States. The study is intended to evaluate the safety and tolerability of repeated oral administration of MGT-006, select an appropriate pretreatment approach, and explore dose and regimen options for further development. In Phase 1b, participants will be randomized in three cohots, MGT-006 without pretreatment antibiotics or to oral vancomycin or AFM (Amoxicillin/Fosfomycin/Metronidazole) pretreatment followed by MGT-006. Randomization will be stratified by country.…
Inclusion Criteria: 1. Patients who understand the contents of this clinical study, sign a written informed consent form, and possess the willingness and capability to participate in all medical examinations, evaluations, and follow-ups related to the study. 2. Patients aged 18 to 75 years at the time of informed consent 3. Patients who have been diagnosed with UC through endoscopic and histological examination for at least 12 weeks at the time of final registration 4. Patients with a modified Mayo Score of 4 to 7 at the time of final registration Exclusion Criteria: 1. Patients with any of…
MGT-006 is an investigational enteric-coated oral capsule filled with lyophilized human fecal material containing viable gut microbiota. In Phase 1b, four capsules are taken three times daily before meals for 56 days (12 capsules per day). Dose reduction, interruption, discontinuation, and re-escalation may occur according to protocol-defined safety rules. Phase 2a doses, dosing frequency, and treatment duration will be determined based on Phase 1b findings and specified in an amended protocol.
Vancomycin hydrochloride is administered orally as pretreatment at a total daily dose of 500 mg (as vancomycin), divided into four daily administrations, for five days before MGT-006. In Phase 1b, it is administered only to participants randomized to the vancomycin pretreatment arm. Its use in Phase 2a depends on the pretreatment approach selected from Phase 1b.
Subjects allocated to the AFM group will receive pretreatment antibiotics for 5 days after final registration. Amoxicillin hydrate 1500 mg/day (as amoxicillin), fosfomycin calcium hydrate 3000 mg/day (as fosfomycin), and metronidazole 750 mg/day will be orally administered three times a day for 5 days. Its use in Phase 2a depends on the pretreatment approach selected from Phase 1b.