Atossa gets FDA rare pediatric disease status for McCune-Albright drug

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Atossa Therapeutics Receives FDA Rare Pediatric Disease Designation for (Z)-Endoxifen for McCune-Albright Syndrome

May 4, 2026 8:30 AM EDT

Designation expands (Z)-endoxifen program into rare pediatric endocrine disorder and qualifies Atossa for a Priority Review Voucher award upon approval

SEATTLE, May 4, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing novel therapies in oncology and other areas of high unmet clinical need, today announced that the U.S. Food and Drug Administration ("FDA") has granted Rare Pediatric... More