×

Novartis halts ALS drug development after mid-stage trial failure

By Thomson Reuters Sep 16, 2026 | 11:54 AM

By Sriparna Roy

Sept 16 (Reuters) – Novartis has halted development of an experimental drug for amyotrophic lateral sclerosis after it failed to meet goals in a mid-stage ​study, marking the latest disappointment for the Swiss ‌drugmaker this year.

This follows an earlier setback for a closely watched heart drug, last week’s late-stage failure of a muscle-wasting drug, and the halt of eight of 10 studies for its rap-cel cell therapy this ‌month ​after three patient deaths. These developments ⁠have intensified investor scrutiny of ⁠its pipeline.

Endpoints News and Bloomberg News reported the news earlier on Wednesday, which the company later confirmed in an emailed statement to Reuters, saying it was discontinuing development ​of the drug VHB937.

The drug, also called lifonebart, was being studied in patients with ALS, also called Lou Gehrig’s ⁠disease. It is a neurodegenerative ⁠condition that affects how nerve cells communicate with ​muscles and leads to muscle weakness that worsens over time.

The company’s ​U.S.-listed shares were marginally up.

The drug failed to ‌meet both main and secondary goals in the mid-stage trial, which was evaluating the efficacy and safety of VHB937 in participants with early-stage ALS within two years of symptom onset.

The ⁠study had enrolled 251 patients, according to clinicaltrials.gov.

The drug aims to stabilize TREM2, a protein that helps regulate immune responses, inflammation and ⁠waste clearance in ‌the brain.

Companies have been trying to develop ⁠TREM2 drug candidates but have faced failures. ​In 2024, ‌Alector said its experimental drug failed in ​a mid-stage ⁠trial.

Novartis is also studying the drug in patients with Alzheimer’s disease, a progressive brain disorder that slowly robs memory.

The clinical trials website shows the company is recruiting patients for the mid-stage trial.

(Reporting by Anusha Shah and Sriparna Roy in Bengaluru; Editing ​by Vijay Kishore)