TY - GEN AU - Baird,Richard D AU - van Rossum,Annelot G J AU - Oliveira,Mafalda AU - Beelen,Karin AU - Gao,Meiling AU - Schrier,Mariette AU - Mandjes,Ingrid A M AU - Garcia-Corbacho,Javier AU - Vallier,Anne-Laure AU - Dougall,Greig AU - van Werkhoven,Erik AU - Linossi,Constanza AU - Kumar,Sanjeev AU - van Tinteren,Harm AU - Callari,Maurizio AU - Beddowes,Emma AU - Perez-Garcia,José-Manuel AU - Rosing,Hilde AU - Platte,Else AU - Nederlof,Petra AU - Schot,Margaret AU - de Vries Schultink,Aurelia AU - Bernards,René AU - Saura,Cristina AU - Gallagher,William AU - Cortès,Javier AU - Caldas,Carlos AU - Linn,Sabine C TI - POSEIDON Trial Phase 1b Results: Safety, Efficacy and Circulating Tumor DNA Response of the Beta Isoform-Sparing PI3K Inhibitor Taselisib (GDC-0032) Combined with Tamoxifen in Hormone Receptor Positive Metastatic Breast Cancer Patients SN - 1557-3265 PY - 2020///0910 KW - Adult KW - Aged KW - Aged, 80 and over KW - Antineoplastic Combined Chemotherapy Protocols KW - adverse effects KW - Biomarkers, Tumor KW - Breast Neoplasms KW - diagnosis KW - Circulating Tumor DNA KW - Female KW - Humans KW - Imidazoles KW - administration & dosage KW - Middle Aged KW - Mutation KW - Neoplasm Metastasis KW - Neoplasm Staging KW - Oxazepines KW - Receptors, Estrogen KW - genetics KW - Receptors, Progesterone KW - Retreatment KW - Tamoxifen KW - Treatment Outcome N1 - Publication Type: Clinical Trial, Phase I; Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1158/1078-0432.CCR-19-0508 ER -