PTC Therapeutics Inc. CEO Matthew Klein said the firm “achieved all we set out to [achieve] in phase II” with PTC-518 in Huntington’s disease (HD), but it wasn’t enough to excite Wall Street, as some questioned whether the level of associations between trial findings and efficacy would appease the U.S. FDA. Shares (NASDAQ:PTCT) ended May 5 at $40.65, down $9.30, or 18.6%. Warren, N.J.-based PTC rolled out the most recent data from the Pivot-HD effort in stage 2 and stage 3 HD with PTC-518, an oral, centrally as well as peripherally distributed huntingtin (HTT) pre-mRNA splicing modifier.

PTC Therapeutics Inc. said a “highly competitive process with several parties involved” led to the deal centered on the firm’s Huntington’s disease program with Novartis AG, an arrangement that brings $1 billion up front along with as much as $1.9 billion in development, regulatory, and sales milestone rewards.

PTC Therapeutics Inc.’s accelerated go-ahead from the U.S. FDA for Kebilidi (eladocagene exuparvovec-tneq), a recombinant adeno-associated virus serotype 2-based gene therapy to treat aromatic L-amino acid decarboxylase (AADC) deficiency, came with a priority review voucher (PRV) that the company intends to monetize.

As an array of developers push their Friedreich’s ataxia (FA) drugs along, PTC Therapeutics Inc.’s recent update on its program piqued thirst for the 15-lipoxygenase inhibitor vatiquinone. Warren, N.J.-based PTC said the prespecified endpoint for two different FA long-term extension studies was met, with highly statistically significant evidence of durable treatment benefit on disease progression.

The first bispecific antibody to win regulatory approval is about to make a comeback 10 years after being taken off the market in Europe for commercial reasons. Catumaxomab, then called Removab, and now reborn with the brand name Korjuny, received a positive opinion for the treatment of malignant ascites from the EMA’s Committee for Medicinal Products for Human Use (CHMP,) at its monthly meeting Oct. 14 to 17.

The EMA’s Committee for Medicinal Products for Human Use (CHMP) recommended approval of 14 drugs and the extension of the label of 11 others at its July meeting, but, inevitably, it was the decision to turn down the Alzheimer’s disease therapy Leqembi (lecanemab) that stirred the greatest reaction.

Two drugs were pushed back by the EMA last week, with a recommendation that Ocaliva, currently the only second line standard of care for treating primary biliary cholangitis, be withdrawn from the market, and a refusal to grant conditional approval for masitinib in the treatment of amyotrophic lateral sclerosis.

A nearly two-year-old partial clinical hold has been lifted by the U.S. FDA on PTC Therapeutics Inc.’s pivotal phase II study in Huntington’s disease. The agency had paused enrollment in October 2022, saying it wanted more data on PTC-518, an orally bioavailable small-molecule splicing modifier, before enrollment could continue.