The anti-diabetic drug pioglitazone did not improve survival time when tested as an add-on therapy to riluzole in a phase 2 clinical trial of people with amyotrophic lateral sclerosis (ALS).
The trial, which was conducted in Germany, was stopped early "for futility" when interim results showed no effects on survival. (A futility trial is one that is designed to stop at a designated point if it's clear that the drug is not having the intended effect.)