Atossa Therapeutics receives FDA "Study May Proceed" letter for (Z)-Endoxifen.

Tuesday, Jan 6, 2026 8:35 am ET1min read
ATOS--

Atossa Therapeutics received a "Study May Proceed" letter from the FDA for its investigational new drug application for (Z)-endoxifen in metastatic breast cancer. This marks an important regulatory milestone for the company and may potentially expand the use of (Z)-endoxifen for metastatic ER+/HER2- breast cancer.

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