Actinium Pharmaceuticals Unveils Preclinical Data Showing ATNM-400 Overcomes Breast Cancer Therapy Resistance

Reuters
2025.12.01 13:45
portai
I'm PortAI, I can summarize articles.

Actinium Pharmaceuticals Inc. announced preclinical data for ATNM-400, an Actinium-225 antibody radioconjugate, showing significant anti-tumor activity in breast cancer models resistant to standard therapies. The data suggest ATNM-400 may overcome resistance to endocrine and HER2-targeted therapies and inhibit tumor growth in TNBC models. Results will be presented at the San Antonio Breast Cancer Symposium on December 11, 2025.