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Daiichi Sankyo and Merck Dose First Patient in P-III (HERTHENA-Breast04) Trial of Patritumab Deruxtecan to Treat HR+/HER2- Breast Cancer

Shots: The first patient is dosed in P-III (HERTHENA-Breast04) trial (n=~1000) of patritumab deruxtecan (HER3-DXd; 5.6mg/kg) vs CT/Enhertu for unresectable LA/M, HR+, HER2- breast cancer after progression on endocrine & CDK4/6 inhibitor therapy in either adjuvant or 1L metastatic settings HERTHENA-Breast04 was initiated based on findings from P-II (ICARUS-Breast01) & a P-I/II breast cancer study published…

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Merck and Daiichi Sankyo Report First Patient Dosing with Ifinatamab DXd in P-III (IDeate-Prostate01) Trial for mCRPC

Shots: Merck & Daiichi Sankyo have dosed first pts with ifinatamab deruxtecan (I-DXd) in its P-III (IDeate-Prostate01) trial for metastatic castration-resistant prostate cancer (mCRPC), which was initiated based on positive P-I/II (IDeate-PanTumor01) trial data The P-III (IDeate-Prostate01) trial will evaluate I-DXd (12mg/kg) vs docetaxel (75mg/m²) plus corticosteroid in ~1440 mCRPC pts, who progressed during or after…

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