RT Conference Proceedings T1 MEN1611, a PI3K inhibitor, combined with trastuzumab (T) +/- fulvestrant (F) for HER2+/PIK3CA mutant (mut) advanced or metastatic (a/m) breast cancer (BC): Safety and efficacy results from the ongoing phase Ib study (B-PRECISE-01) A1 Piccart, M. A1 Borrego, M. Ruiz A1 Arkenau, H-T. A1 Escriva-De-Romani, S. I. A1 Howell, S. J. A1 Hennequin, A. A1 Jimenez-Rodriguez, B. A1 Del Conte, G. A1 Simonelli, M. A1 Palleschi, M. A1 Duhoux, F. A1 De Speville Uribe, B. Doger A1 Curigliano, G. A1 Waters, S. A1 Aftimos, P. G. A1 Wildiers, H. A1 Tosi, D. A1 Amair-Pinedo, F. A1 Pellacani, A. U. E. A1 Laurent, D. O. PB Elsevier SN 0923-7534 YR 2021 FD 2021-09-21 LK https://hdl.handle.net/10668/27098 UL https://hdl.handle.net/10668/27098 LA en DS RISalud RD Apr 5, 2025