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Article History

Received: 3 January 2026

Accepted: 3 April 2026

First Online: 5 May 2026

Declarations

:

: The Authors declare no Competing Non-Financial Interests but the following Competing Financial Interests: SAW: Consulting/Advisory Board: Gilead, Foundation Medicine, Veracyte, Hologic, Eli Lilly, Biovica, Pfizer/Arvinas, Puma Biotechnology, Novartis, AstraZeneca, Genentech, Regor Therapeutics, Stemline/Menarini. Education/Speaking: Eli Lilly, Guardant Health, 2ndMD Institutional Research Support: Genentech, Eli Lilly, Pfizer/Arvinas, Nuvation Bio, Regor Therapeutics, Sermonix. MK: reports research funding to the institute from BMS, Roche and AstraZeneca/MedImmune and an advisory role/speakers’ fee (all compensated to the institute) for Alderaan, BMS, Domain Therapeutics, Medscape, Roche, MSD and Daiichi Sankyo, outside the submitted work. JC: Consulting/Advisor: Roche, AstraZeneca, Seattle Genetics, Daiichi Sankyo, Lilly, Merck Sharp&Dohme, Leuko, Bioasis, Clovis Oncology, Boehringer Ingelheim, Ellipses, Hibercell, BioInvent, Gemoab, Gilead, Menarini, Zymeworks, Reveal Genomics, Scorpion Therapeutics, Expres2ion Biotechnologies, Jazz Pharmaceuticals, Abbvie, BridgeBio, Biontech, Biocon, Circle Pharma, Delcath Systems, Inc., Hexagon Bio. Honoraria: Roche, Novartis, Eisai, Pfizer, Lilly, Merck Sharp&Dohme, Daiichi Sankyo, Astrazeneca, Gilead, Steamline Therapeutics. Research funding to the Institution: Roche, Ariad pharmaceuticals, AstraZeneca, Baxalta GMBH/Servier Affaires, Bayer healthcare, Eisai, F.Hoffman-La Roche, Guardanth health, Merck Sharp&Dohme, Pfizer, Piqur Therapeutics,Iqvia, Queen Mary University of London. Stock: MAJ3 Capital, Leuko (relative). Travel, accommodation, expenses: Roche, Novartis, Eisai, Pfizer, Daiichi Sankyo, Astrazeneca, Gilead, Merck Sharp&Dhome, Steamline Therapeutics.Patents: Pharmaceutical Combinations of A Pi3k Inhibitor And A Microtubule Destabilizing Agent.Javier Cortés Castán, Alejandro Piris Giménez, Violeta Serra Elizalde. WO 2014/199294 A. ISSUED. Her2 as a predictor of response to dual HER2 blockade in the absence of cytotoxic therapy.Aleix Prat, Antonio Llombart, Javier Cortés.US 2019/0338368 A1. JB: Speaker fees and/or honoraria for consulting or advisory functions: AstraZeneca, Daiichi-Sankyo, Lilly, Gilead, Pfizer, Novartis, MSD, Roche, Knight Pharmaceuticals. Financial support for educational programs and symposia: Roche, Daiichi-Sankyo. LT: Speaker fees and/or honoraria for consulting or advisory functions: Daiichi-Sankyo, MSD, AstraZeneca, Pfizer, Lilly, Novartis. Financial support for educational programs and symposia: AstraZeneca, Roche, Gilead. Institutional Research grant: Novartis. RBS: Speaker fees and/or honoraria for consulting or advisory functions: AstraZeneca, Daiichi-Sankyo, Eli Lilly, Gilead, Libbs, Pfizer, Novartis, MSD, and Roche. Financial support for educational programs and symposia: AstraZeneca, Daiichi-Sankyo, Gilead, Eli Lilly, and MSD. Institutional Research grant: AstraZeneca, Daiichi-Sankyo. RCB: Speaker fees and/or honoraria for consulting or advisory functions: Daiichi-Sankyo, Nestle Health Science, Addium, Gilead, MSD, BMS, AstraZeneca, Ache, Pfizer, Novartis. Financial support for educational programs and symposia: AstraZeneca, Daiichi-Sankyo, MSD, Lilly. Institutional Research grant: Novartis, AstraZeneca.