A Phase 1 interventional study of Difluoromethylornithine and Placebo in Type 1 Diabetes, sponsored by Indiana University. Completed at 3 sites in United States. Open to participants aged 12 Years to 40 Years. Per ClinicalTrials.gov, last updated 2021-09-05.
Sponsored by Indiana University · Phase 1, Interventional, and Treatment
This study is a multicenter, double-blind, placebo-controlled, 2:1 randomly assigned, phase 1 clinical trial for individuals with type 1 diabetes. It is a blinded dose-ranging study enrolling patients with new onset type 1 diabetes with documented continued residual C-peptide production. After a 4 week screening and run-in period during which eligibility will be determined and glycemic control optimized, subjects will have a 3-month double-masked treatment period with either DFMO or placebo. After a 3 month wash-out period the durability of effect will be assessed. Subjects will be randomly assigned (6 to DFMO; 3 to placebo in each cohort) to 1 of 4 sequential dose cohorts.
This study is repurposing alpha difluoromethylornithine (DFMO) in order to characterize its effects in persons with new onset type 1 diabetes. In preliminary studies in mice, inhibition of polyamine synthesis with DFMO preserved β-cell insulin production and delayed diabetes onset. Polyamine modulation has the potential to improve β cell health in persons with T1D. The investigators propose that decreasing polyamine synthesis in persons with new onset T1D will improve markers of ß cell health and function.
This double-masked, placebo-controlled dose-finding randomized multiple ascending dose study will include a 1-month screening period; a 3-month double-masked treatment period; and a 3-month follow-up period. Subjects will be randomly assigned to 1 of 4 sequential dose cohorts: DFMO at nominal (starting) doses of 125 mg/m2 per day, 250 mg/m2 per day, 500 mg/m2 per day, and then 750 mg/m2 per day. Dose escalation will be done based upon whether any dose limiting toxicities are observed and whether any suggestion of effect on biomarkers of β-cell stress is observed. At a maximum dose, the cohort will be expanded in order to estimate biomarker activity. If there is no suggestion of effect and no dose-limiting toxicity 750 mg/m2 per day, a 750 mg per day group will be enrolled. Regardless of the dose we expand, the investigators will evaluate efficacy of treatment on the primary and secondary outcomes. The primary outcome endpoint in this study will be the safety of the doses. In particular, the dose-limiting toxicities known to be potential side effects of DFMO (thrombocytopenia, neutropenia, anemia, audiometric impairment) will be reviewed and monitored by an internal safety review committee before each cohort is enrolled. Secondary outcomes will include biomarkers of beta cell stress, measures of insulin production/glycemia. Exploratory outcomes will include flow cytometry assessment of B- and T-cell subsets, quantification of polyamine intake and excretion, and pharmacokinetic DFMO concentrations. Completion of this study will facilitate future work in studies of DFMO or other inhibitors of pathways that influence intracellular polyamine levels, including non-steroidal inflammatory agents, and novel polyamine transport inhibitors. .
10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.
This study's enrollment of 41 is below the median of 80 across 8,367 interventional studies indexed under Diabetes Mellitus.
Browse Diabetes Mellitus studies →Indiana University is the lead sponsor of 958 studies on the registry; 200 are open to participants now.
Of its 142 completed or terminated interventional studies of FDA-regulated products, 112 (79%) have results posted.
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Exclusion Criteria:
Subjects may be given daily dose of DFMO
Drug: Difluoromethylornithine
Subjects may be given daily dose of placebo
Drug: Placebo
Active Therapy with DFMO
Also known as: DFMO
Placebo Comparitor
Also known as: Comparitor
Number of Participants with Dose Limiting Toxicities
Low platelet counts, low white blood cell counts, low hemoglobin, severe abdominal pain/diarrhea, hearing loss
Time frame: 6 month
Changes in Serum Markers of Beta Cell Stress
Observed Changes in pro-insulin and c-peptide measured from blood
Time frame: 6 months
This study is completed, as verified in Sep 2021. You cannot join it, but the record below documents what was studied.
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Indiana University