Two days before the PDUFA date, the U.S. FDA handed down a complete response letter (CRL) for Rocket Pharmaceuticals Inc.’s Kresladi (marnetegragene autotemcel), delaying potential approval of the lentiviral-based gene therapy as the first therapeutic option for leukocyte adhesion deficiency type I, a rare, inherited immune disorder. But the Cranbury, N.J.-based company has suggested that delay won’t be long, as the CRL requests only “limited” chemistry manufacturing and controls (CMC) information – additional CMC data were also cited as the reason for the three-month review extension earlier this year.

After a previous phase III failure, Savara Inc. kept at it and found success with molgramostim for the rare lung disease autoimmune pulmonary alveolar proteinosis. A second attempt, the pivotal phase III Impala-2 study of molgramostim, an inhaled form of recombinant granulocyte macrophage colony-stimulating factor for adults, hit its primary endpoint and left participants breathing easier. The results led Savara to say it would complete a BLA submission sometime in the first half of 2025, with filings in Europe and Japan to follow.

Argenx SE gained U.S. FDA approval of subcutaneously given Vyvgart Hytrulo (efgartigimod alfa and hyaluronidase-qvfc) for adult patients with chronic inflammatory demyelinating polyneuropathy (CIDP). The company’s stock (NASDAQ:ARGX) was up 11.7% to $440.59 at the close of trading June 24. About 24,000 people in the U.S. are being treated for CIDP, and patients are generally diagnosed between 40 and 60 years of age.

The adverse effects of PD-1 blockers on the CNS observed in cancer patients could occur through their effects on an enzyme that activates microglia. Pharmacological inhibition of the enzyme in mice reduced microglial activation and cognitive deficit without altering the antitumor capacity of the immunotherapy.

Following a day of deals that collectively bring a potential $3.75 billion into three biopharma companies – namely Ascidian Therapeutics Inc., Belharra Therapeutics Inc. and Mabcare Therapeutics – researchers will be busy discovering new therapies for neurological and immunological diseases, and advancing globally a candidate for solid tumors.

Washington-based Vanda Pharmaceuticals Inc. has faced a challenging few years involving a federal lawsuit against the U.S. FDA, patent infringement litigation, increasing generic competition and dwindling sales, as well as a complete response letter nixing plans to expand its melatonin receptor agonist Hetlioz (tasimelteon) into insomnia, yet it has recently received a higher, unsolicited acquisition offer of $466 million from a second company, Cycle Pharmaceuticals Ltd.