Alnylam Pharmaceuticals Inc.’s decision to change its analysis plan for the phase III Helios-B trial of RNAi therapeutic Amvuttra (vutrisiran) to treat transthyretin amyloidosis with cardiomyopathy, pushing top-line results back by three months, pressured its share price (NASDAQ:ALNY) down by 10% on Feb. 15, while also boosting shares of competitor Bridgebio Pharma Inc. (NASDAQ:BBIO) by 14%.
Armed with strong phase III safety data in Japanese patients, Palo Alto, Calif.-based Bridgebio Pharma Inc. is planning to file for Japan approval of its investigational drug acoramidis for a rare heart disorder.
Armed with strong phase III safety data in Japanese patients, Palo Alto, Calif.-based Bridgebio Pharma Inc. is planning to file for Japan approval of its investigational drug acoramidis for a rare heart disorder.
Following an unexpected FDA complete response letter (CRL), Alnylam Pharmaceuticals Inc. said it will no longer pursue an expanded indication for Onpattro (patisiran) in the U.S. The RNAi therapeutic was approved in 2018 to treat polyneuropathy of hereditary transthyretin-mediated (ATTR) amyloidosis and seemed well on its way to snagging a second U.S. indication after the FDA’s Cardiovascular and Renal Drugs Advisory Committee voted 9-3 in September that the drug’s benefits outweighed its risks as a treatment for cardiomyopathy of ATTR amyloidosis. The FDA disagreed with the committee, saying in the CRL that patisiran’s clinical meaningfulness had not been established in the proposed indication.
With Alnylam Pharmaceuticals Inc.’s FDA clearance for Amvuttra (vutrisiran) in the rearview mirror, investors are looking ahead to potentially label-widening phase III data related to another, already approved drug: Onpattro (patisiran).
The pandemic has forced pharma and biotech to be more agile to better navigate the obstacles and still find success. Supply chain gaps are part of the problem, as are clinical trial delays. Yet the industry has successfully forged ahead in the past year to produce the seven drugs Clarivate believes in the next five years will each earn more than $1 billion annually.
As the company unveiled 18-month results from the phase III study called Helios-A, Alnylam Pharmaceuticals Inc.’s president of R&D, Akshay Vaishnaw, said “new exploratory data with the cardiac endpoints are extremely encouraging.” The study is testing RNAi therapy vutrisiran in polyneuropathy associated with hereditary transthyretin-mediated (hATTR) amyloidosis, where Helios-A met all secondary endpoints measured at 18 months.
Alnylam Pharmaceuticals Inc. said the 164-patient Helios-A phase III study with next-generation RNAi drug vutrisiran hit its primary endpoint as well as both secondary goals in the treatment of hereditary transthyretin-mediated amyloidosis with polyneuropathy. The primary endpoint was change from baseline in the modified Neuropathy Impairment Score at nine months as compared to historical placebo data from the Apollo phase III study of Alnylam’s Onpattro, cleared by the FDA for ATTR polyneuropathy in August 2018.