MN-166 (ibudilast) in amyotrophic lateral sclerosis in a Phase IIb/III study: COMBAT-ALS study design.

Lay abstract Amyotrophic lateral sclerosis (ALS) is a neurological disease defined by the loss of the nerve cells going to the muscles. Despite significant effort, we still do not have good treatments for ALS. MN-166 (ibudilast) can protect nerve cells by calming inflammation in several ways in models of ALS. Early human studies suggest that MN-166 may extend life and slow disease progression in ALS patients. This article describes the rationale and design of COMBAT-ALS, an ongoing randomized, double-blind, placebo-controlled, multicenter Phase IIb/III study. This study will show the drug's safety and tolerability and its effects on physical function, muscle strength, quality of life and survival in people living with ALS. Trial registration number: NCT04057898 (ClinicalTrial.gov).