PTC Therapeutics Announces that PTC518 Has Entered into a Phase 1 Clinical Trial for the Huntington's Disease Program
"The initiation of the clinical trial to evaluate PTC518 for the Huntington's disease program is an important milestone towards identifying a potential new Huntington's disease treatment that directly targets the underlying cause of the disease," said
The Phase 1 study includes both single and multiple ascending dosing regimens that will help establish the safety, pharmacology, and dose selection for the Phase 2 study. In addition, huntingtin mRNA and protein levels will be measured to gain early proof of splicing mechanism in humans as was done in the risdiplam SMA development program. Data from the Phase 1 study are expected to be available in the first half of 2021.
PTC518 is a small molecule splicing modifier that acts via a unique mechanism to promote the inclusion of a novel pseudoexon containing a premature termination codon, thus triggering HTT mRNA degradation and subsequent reduction in HTT protein levels. In preclinical studies using cells isolated from patients with Huntington's disease (HD), PTC518 reduced both huntingtin mRNA and protein levels with high potency in a dose-dependent manner. In addition, oral administration of PTC518 in the BACHD mouse model of HD achieved dose dependent and equitable lowering of HTT protein throughout the body, including the brain, muscle, and blood.
PTC is a science-driven, global biopharmaceutical company focused on the discovery, development and commercialization of clinically differentiated medicines that provide benefits to patients with rare disorders. PTC's ability to globally commercialize products is the foundation that drives investment in a robust and diversified pipeline of transformative medicines and our mission to provide access to best-in-class treatments for patients who have an unmet medical need. To learn more about PTC, please visit us at www.ptcbio.com and follow us on Facebook, on Twitter at @PTCBio, and on LinkedIn.
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