SEATTLE, Feb. 22, 2024 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (Nasdaq: ATOS), a clinical stage biopharmaceutical company developing innovative proprietary medicines to address significant unmet needs in oncology with a focus on breast cancer, today announced that the first patient has been dosed with Atossa’s proprietary Selective Estrogen Receptor Modulator (SERM), (Z)-endoxifen, in the Re-Evaluating Conditions for Active Surveillance Suitability as Treatment: Ductal Carcinoma In Situ (R