The U.S. FDA released a trio of draft guidances to help sponsors in developing and monitoring cell and gene therapies, as well as other regenerative medicine therapies.

After a phase III stumble, Acadia Pharmaceuticals Inc. will drop development of ACP-101, intranasal carbetocin, to treat hyperphagia in patients with the rare genetic disorder Prader-Willi syndrome. Top-line data from the 12-week, double-blind, randomized phase III study missed its primary endpoint by not producing a statistically significant improvement over placebo.

Renewing hopes of restoring the rare pediatric disease priority review voucher (RPD PRV) program that expired at the end of 2024, the House Energy and Commerce Committee voted 47-0 Sept. 17 to advance the Give Kids a Chance Act of 2025 (H.R. 1262), one of six pieces of legislation slated to move to the full U.S. House for consideration.

Shape Therapeutics Inc. could bring in as much as $1.2 billion in a new option and license deal with Vectory Therapeutics BV. It’s another collaboration for both companies that are known for working with large and small pharmas. Vectory is getting the exclusive option to evaluate Shape’s brain-penetrating adeno-associated virus capsid, SHP-DB1, against three targets, including mHTT, TDP-43 for Huntington’s disease and phosphorylated tau for Alzheimer’s disease.

Recent comments from CDER Director George Tidmarsh suggesting that the agency may be backing away from the use of its independent expert panels for individual product approvals seem to be supported by the numbers.

Two months after starting the phase I/II Synrgy trial with its gene therapy, CAP-002, enrolling 12 pediatric patients with rare disease STXBP1 encephalopathy, Capsida Biotherapeutics paused the study following the death of the trial’s first patient.

The U.S. FDA issued a complete response letter (CRL) for the NDA to privately held Saol Therapeutics Inc.’s rare disease treatment, sodium dichloroacetate (SL-1009), for pyruvate dehydrogenase complex deficiency. The inhibitor of pyruvate dehydrogenase kinases is the only drug in development for treating the rare genetic disorder, according to Cortellis. There are no FDA-approved treatments for the disease.

As Wave Life Sciences Ltd. released more results from its ongoing phase Ib/IIa study of small interfering RNA editing oligonucleotide WVE-006 for treating alpha-1 antitrypsin deficiency, the company’s stock (NASDAQ:WVE) dropped by 16.8% to close at $8 on Sept. 3.

In Ionis Pharmaceuticals Inc.’s second U.S. FDA approval in under a year, the agency approved Dawnzera (donidalorsen) as a prophylactic therapy in the rare and genetic disease hereditary angioedema (HAE). The approval came as scheduled as the NDA had a PDUFA date of Aug. 21. Dawnzera now joins a market with previously approved drugs for the rare, genetic, life-threatening condition, as well as other companies with HAE drugs in development.