CI

At a glance

ClinicalIndex Comparison Record
Phase 2Active· 41 enrolled
Drug / intervention
Metformindrug
Likely dose
Metformin 500mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04220021
NCT04220021Phase 2Active

A Single-Center, Open Label Study to Assess the Safety and Tolerability of Metformin in Subjects With C9orf72 Amyotrophic Lateral Sclerosis Over 24 Weeks of Treatment

University of Florida·interventional·Posted Jan 7, 2020·Updated Dec 2, 2025

In Brief

A Phase 2 clinical trial evaluating Metformin for C9orf72 Amyotrophic Lateral Sclerosis (ALS) and Frontotemporal Dementia. Active but no longer recruiting, targeting 41 participants across 1 site.

Detailed Summary

The primary objective is to assess the safety and tolerability of Metformin in subjects with C9orf72 amyotrophic lateral sclerosis administered for 24 weeks. The overall objective is to determine if Metformin is safe in C9orf72 ALS patients and is a potentially viable therapeutic treatment for C9-ALS that reduces repeat-associated non-canonical start codon - in DNA (non-ATG) (RAN) proteins that are produced by the C9orf72 repeat expansion mutation.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

Phase 2ActiveOverdue
2020202120222023202420252026
First PostedJan 7, 2020
Enrollment StartJan 10, 2020
Primary CompletionAug 26, 2024
Study CompletionJun 30, 2026
TodayJul 2, 2026
Enrollment to primary: 4.6 yearsPosted 6.5 years ago

Interventions

Metformindrug

Metformin is a widely used, well-tolerated drug that has been used for decades as a first-line defense for treating type 2 diabetes. Its safety has been well established. Subjects will begin treatment with Metformin at a dosage of 500mg with an escalation of dosage by 500mg every week to a maximal dosage of 2000mg. Dosing will be twice daily.