U.S. FDA panel votes against Amylyx’s ALS drug over trial data concerns

Author of the article: A panel of outside advisers to the U.S. Food and Drug Administration on Wednesday voted against approving Amylyx Pharmaceuticals Inc’s drug for amyotrophic lateral sclerosis (ALS), a neurodegenerative disease. The committee voted 6 to 4 against the oral drug, AMX0035, saying the company’s clinical study data failed to establish that it…
U.S. FDA panel votes against Amylyx’s ALS drug over trial data concerns

Author of the article:

A panel of outside advisers to the U.S. Food and Drug Administration on Wednesday voted against approving Amylyx Pharmaceuticals Inc’s drug for amyotrophic lateral sclerosis (ALS), a neurodegenerative disease.

The committee voted 6 to 4 against the oral drug, AMX0035, saying the company’s clinical study data failed to establish that it was effective against the disease.

Amylyx’s FDA submission was based on a 24-week placebo-controlled study of 137 participants with ALS.

ALS, whose cause is largely unknown, leads nerve cells in the brain and spinal cord to break down, affecting physical function and resulting in severe disability and death.

Commonly known as Lou Gehrig’s disease, ALS entered the spotlight in 2014 due to the “Ice Bucket Challenge,” which involved people filming themselves pouring ice-cold water over their heads to raise awareness.

The FDA’s decision on the drug is expected by June 29. The agency typically follows the panel’s recommendations, though it is not obligated to.

The panel’s decision was in line with briefing documents released on Monday, where the FDA staff reviewers raised concerns over the drug’s trial data and efficacy.

“We were asked to look for substantial evidence with persuasiveness and robustness, and I think this one trial doesn’t quite meet that bar,” said Kenneth Fischbeck, one of the panel members. Fischbeck is an investigator with the National Institutes of Health.

The close vote against the drug was in contrast to strong support from patients during the “open public hearing.”

Patient representative Mark Weston, who voted for the drug, said both Amylyx and the FDA agree it “causes no material harm.”

“I do think this is a case where the FDA should exhibit regulatory flexibility notwithstanding the imperfection of the study.”

Amylyx recently initiated a larger trial in about 600 patients globally, but completion is not expected until 2024. (Reporting by Leroy Leo and Mrinalika Roy in Bengaluru; Editing by Shinjini Ganguli and Devika Syamnath)

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