Prnewswireยท2025-05-06 22:50Core Viewpoint - PTC Therapeutics, Inc. is under investigation for potential securities fraud and unlawful business practices following the announcement of Phase 2 study results for its treatment of Huntington's disease, which led to a significant drop in stock price [1][2][3]. Group 1: Company Developments - PTC announced results from the Phase 2 PIVOT-HD study of PTC518 (votoplam) in Stage 2 and Stage 3 Huntington's disease patients, achieving its primary endpoint of reducing blood Huntingtin protein levels with a p-value of less than 0.0001 at Week 12 [2]. - Despite meeting the primary endpoint, analysts suggest that a Phase 3 study may be necessary to confirm the treatment's efficacy in slowing the progression of Huntington's disease [2]. Group 2: Market Reaction - Following the announcement of the study results, PTC's stock price fell by $9.30 per share, representing an 18.62% decline, closing at $40.65 per share on May 5, 2025 [3].