Prnewswire·2026-01-16 21:40Core Insights - Atossa Therapeutics has received Orphan Drug Designation from the FDA for (Z)-endoxifen to treat Duchenne muscular dystrophy (DMD), which is a significant milestone for the company in its development efforts for this serious disease [1][2] Group 1: Company Overview - Atossa Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on developing innovative therapies in oncology and other areas with high unmet medical needs [7] - The company's lead product candidate, (Z)-endoxifen, is being evaluated for its potential applications in oncology and rare diseases [5][7] - Atossa has a growing global intellectual property portfolio supporting the (Z)-endoxifen program, including multiple recently issued U.S. patents and numerous pending applications worldwide [6] Group 2: Product Information - (Z)-endoxifen is a potent Selective Estrogen Receptor Modulator/Degrader (SERM/SERD) with demonstrated activity across multiple mechanisms of interest, showing a favorable safety profile distinct from tamoxifen [5] - The drug is not yet approved for any indication, and the company plans to continue engaging with the FDA as it advances its development efforts [2][5] Group 3: Disease Context - Duchenne Muscular Dystrophy (DMD) is a rare, progressive, X-linked neuromuscular disorder caused by mutations in the dystrophin gene, leading to severe symptoms and a substantial unmet medical need for effective treatments [4]