Atossa Therapeutics Selects PSI as Contract Research Organization for Pivotal Dose-Ranging Study of (Z)-Endoxifen in Metastatic Breast Cancer

Monotherapy Phase 2 study designed with FDA input; IND expected in Q4 2025 Topline results anticipated in 2026 Positions Atossa for transition into registrational Phase 3 development SEATTLE, Aug. 20, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, announced today it has selected PSI, a leading global contract research organization (CRO), to operationalize and manage its p ...