RT Journal Article T1 HER2+ Breast Cancer Escalation and De-Escalation Trial Design: Potential Role of Intrinsic Subtyping A1 Bueno Muiño, Coralia A1 Martín, Miguel A1 Monte Millán, María del A1 García Saénz, José Ángel A1 López Tarruella, Sara AB Classical clinical research has been developed according to immunohistochemical breast cancer subtypes, instead of designing trials specifically for each molecular subtype. Efforts in de-escalating treatment should focus on identifying a subgroup of HER2 oncogene addicted tumours that are especially sensitive to anti-HER2 therapies and, thus, spare unnecessary treatments. A prognostic assay that integrates molecular tumour features with clinical and pathologic variables and accurately defines a group of HER2 addicted tumours remains the best candidate among these strategies. PB MPDI SN 2072-6694 YR 2022 FD 2022-01-20 LK https://hdl.handle.net/20.500.14352/71619 UL https://hdl.handle.net/20.500.14352/71619 LA eng NO CIBER and Center of Biomedical Research on Cancer DS Docta Complutense RD 15 may 2024