PTC Therapeutics Announces FDA Acceptance of Translarna™ NDA Resubmission

WARREN, N.J., Oct. 30, 2024 /PRNewswire/ -- PTC Therapeutics, Inc. (NASDAQ: PTCT) announced today the U.S. Food and Drug Administration (FDA) has accepted for review the resubmission of the New Drug Application (NDA) for Translarna™ (ataluren) for the treatment of nonsense mutation Duchenne muscular dystrophy (nmDMD).

"The NDA acceptance for review is a significant milestone that brings us one step closer to providing this important treatment to boys and young men living with nonsense mutation Duchenne muscular dystrophy in the United States," said Matthew B. Klein, M.D., Chief Executive Officer, PTC Therapeutics. "The totality of evidence clearly supports the favorable safety profile and short- and long-term benefits of Translarna for individuals with nmDMD. We look forward to working with FDA throughout the review process."

"We thank FDA for accepting the Translarna NDA for review," stated Pat Furlong, Founder and CEO, Parent Project Muscular Dystrophy. "Translarna uniquely addresses individuals with Duchenne muscular dystrophy secondary to nonsense mutation and could provide an important treatment option for our community. Families in the United States have been waiting a long time for a treatment that targets the underlying cause of nonsense mutation Duchenne."

The NDA resubmission is based on the findings of significant benefit demonstrated in the ITT population (N=359) of the global placebo-controlled trial Study 041. Following 72-weeks of Translarna treatment, there was significant benefit demonstrated on the key study endpoints of six-minute walk distance (6MWD) (p=0.0248), NorthStar Ambulatory Assessment (p=0.0283), 10-meter walk/run (p=0.0422), 4-stair climb (p=0.0293), and time to 10% worsening of 6MWD (p=0.0078).

In addition, the NDA includes the findings of significant long-term Translarna treatment benefit as captured in the STRIDE registry. Translarna treatment resulted in a 3.5-year delay in loss of ambulation (p