ATOS
Atossa Therapeutics, Inc.·Healthcare
5.12
3.434%(+0.17)
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52W L: $3.7652W H: $19.35
ATOS NEWS
prnewswire.com
14h ago
Atossa Therapeutics Announces ASCO 2026 Abstracts Highlighting (Z)-Endoxifen Activity Across ESR1 Mutations and Ongoing EVANGELINE Phase 2 Trial
Preclinical Data Abstract Demonstrates Robust Estrogen Receptor (ER) Inhibition in ESR1-Mutant Breast Cancer Models at Clinically Relevant Concentrations Trial-in-Progress Abstract Details Ongoing Phase 2 EVANGELINE Study of (Z)-Endoxifen Plus Goserelin as Neoadjuvant Therapy in Premenopausal Women With ER+/HER2- Breast Cancer SEATTLE, May 27, 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 significant unmet medical need, today announced that two abstracts featuring (Z)-endoxifen have been accepted for presentation at the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting, being held May 29 to June 2, 2026 in Chicago, IL. "Both abstracts highlight the scientific rationale and ongoing clinical development of (Z)-endoxifen in ER-positive breast cancer," said Dr. Steven C.
prnewswire.com
May 20
Atossa Therapeutics Announces Acceptance of Manuscript Highlighting Utrophin-Modulation Potential of (Z)-Endoxifen in Duchenne Muscular Dystrophy
Review article accepted for publication in Degenerative Neurological and Neuromuscular Disease and builds on Atossa's previously published Duchenne Muscular Dystrophy (DMD) research SEATTLE, May 20, 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 significant unmet clinical need, today announced that the manuscript titled, "(Z)-Endoxifen as a Potential Modulator of Utrophin Pathways in Duchenne Muscular Dystrophy: A Mechanistic and Transcriptomic Perspective," has been accepted for publication in Degenerative Neurological and Neuromuscular Disease. The review centers on utrophin, a structural and functional homolog of dystrophin.
seekingalpha.com
May 19
Atossa Therapeutics, Inc. (ATOS) Discusses Challenges in Breast Cancer Drug Development and Innovation in Clinical Research Transcript
Atossa Therapeutics, Inc. (ATOS) Discusses Challenges in Breast Cancer Drug Development and Innovation in Clinical Research Transcript
prnewswire.com
May 14
Atossa Therapeutics to Host Virtual KOL Event Featuring Dr. Laura Esserman to Discuss Development of (Z)-Endoxifen in ER-Positive Breast Cancer
Event to feature Dr. Laura Esserman, internationally recognized surgical oncologist, breast cancer expert, and founder and principal investigator of the I-SPY Trials SEATTLE, May 14, 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 significant unmet medical need, today announced that it will host a virtual key opinion leader event focused on the evolving clinical and translational data supporting the development of (Z)-endoxifen, the Company's investigational selective estrogen receptor modulator/degrader, or SERM/D, as a potential next-generation endocrine therapy backbone across multiple estrogen receptor ("ER") -positive breast cancer settings. The event will feature internationally recognized surgical oncologist and breast cancer expert Dr. Laura Esserman.
prnewswire.com
May 8
Atossa Therapeutics Reports First Quarter 2026 Financial Results and Provides a Corporate Update
SEATTLE, May 8, 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 announces its financial results and provides an update on recent corporate developments for the first quarter ended March 31, 2026. "During the quarter, we made meaningful progress advancing our (Z)-endoxifen development strategy across both oncology and rare disease indications," stated Dr. Steven Quay, M.D.
prnewswire.com
May 6
Atossa Therapeutics Announces Publication of KARISMA Endoxifen Trial Demonstrating Significant Reduction in Mammographic Breast Density in Healthy Premenopausal Women
Peer-reviewed data support (Z)-endoxifen's (Endoxifen) potential as a differentiated breast cancer risk prevention candidate by marked reduction of mammographic breast density (MBD) Doses of both 1 mg and 2 mg daily Endoxifen significantly reduced MBD versus placebo after six months 1 mg dose achieved clinically meaningful density reduction with a tolerability profile similar to placebo, supporting further development in women at elevated breast cancer risk SEATTLE, May 6, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Atossa or the Company) (Nasdaq: ATOS), a clinical-stage biopharmaceutical company focused on developing novel therapies targeting breast cancer and rare diseases, today announced the publication of results from the KARISMA Endoxifen trial in the Journal of the National Cancer Institute (JNCI). The randomized, double-blind, placebo-controlled Phase 2 study evaluated daily oral Endoxifen and demonstrated that low-dose Endoxifen significantly reduced MBD, a key risk factor for breast cancer.
