Chemotherapy-free Trastuzumab and Pertuzumab in HER2-positive Breast Cancer: FDG-PET Response-adapted Strategy.

Summary

The study assess the early metabolic effects of neoadjuvant treatment with trastuzumab and pertuzumab (± endocrine therapy) on the primary tumor and axillary lymph nodes and their predictive value for pathologic complete response (pCR) in the breast and axilla. And also assess 3-year invasive disease-free survival (iDFS) in patients with HER2-positive (HER: human epidermal receptor) breast cancer treated with neoadjuvant trastuzumab and pertuzumab (± endocrine therapy) using a FDG-PET response-adapted strategy.

Timeline

Start

2017-06-26

Primary completion

2023-11-01

Completion

2026-11-01

Publications

• Llombart-Cussac A, Prat A, Perez-Garcia JM, Mateos J, Pascual T, Escriva-de-Romani S, Stradella A, Ruiz-Borrego M, de Las Heras BB, Keyaerts M, Galvan P, Braso-Maristany F, Garcia-Mosquera JJ, Guiot T, Gion M, Sampayo-Cordero M, Di Cosimo S, Perez-Escuredo J, de Frutos MA, Cortes J, Gebhart G. Clinicopathological and molecular predictors of [18F]FDG-PET disease detection in HER2-positive early breast cancer: RESPONSE, a substudy of the randomized PHERGain trial. Eur J Nucl Med Mol Imaging. 2024 Jul;51(9):2733-2743. doi: 10.1007/s00259-024-06683-0. Epub 2024 Apr 8.
• Perez-Garcia JM, Cortes J, Ruiz-Borrego M, Colleoni M, Stradella A, Bermejo B, Dalenc F, Escriva-de-Romani S, Calvo Martinez L, Ribelles N, Marme F, Cortes A, Albacar C, Gebhart G, Prat A, Kerrou K, Schmid P, Braga S, Di Cosimo S, Gion M, Antonarelli G, Popa C, Szostak E, Alcala-Lopez D, Gener P, Rodriguez-Morato J, Mina L, Sampayo-Cordero M, Llombart-Cussac A; PHERGain Trial Investigators. 3-year invasive disease-free survival with chemotherapy de-escalation using an 18F-FDG-PET-based, pathological complete response-adapted strategy in HER2-positive early breast cancer (PHERGain): a randomised, open-label, phase 2 trial. Lancet. 2024 Apr 27;403(10437):1649-1659. doi: 10.1016/S0140-6736(24)00054-0. Epub 2024 Apr 3.
• Gebhart G, Keyaerts M, Guiot T, Flamen P, Ruiz-Borrego M, Stradella A, Bermejo B, Escriva-de-Romani S, Calvo Martinez L, Ribelles N, Fernandez-Abad M, Albacar C, Colleoni M, Garrigos L, Atienza de Frutos M, Dalenc F, Prat A, Marme F, Schmid P, Kerrou K, Braga S, Gener P, Sampayo-Cordero M, Cortes J, Perez-Garcia JM, Llombart-Cussac A. Optimal [18F]FDG PET/CT Cutoff for Pathologic Complete Response in HER2-Positive Early Breast Cancer Patients Treated with Neoadjuvant Trastuzumab and Pertuzumab in the PHERGain Trial. J Nucl Med. 2024 May 1;65(5):708-713. doi: 10.2967/jnumed.123.266384.
• Perez-Garcia JM, Gebhart G, Borrego MR, Schmid P, Marme F, Prat A, Dalenc F, Kerrou K, Colleoni M, Braga S, Malfettone A, Sampayo-Cordero M, Cortes J, Llombart-Cussac A. Trastuzumab and pertuzumab without chemotherapy in early-stage HER2+ breast cancer: a plain language summary of the PHERGain study. Future Oncol. 2022 Oct;18(33):3677-3688. doi: 10.2217/fon-2022-0663. Epub 2022 Oct 27.
• Perez-Garcia JM, Gebhart G, Ruiz Borrego M, Stradella A, Bermejo B, Schmid P, Marme F, Escriva-de-Romani S, Calvo L, Ribelles N, Martinez N, Albacar C, Prat A, Dalenc F, Kerrou K, Colleoni M, Afonso N, Di Cosimo S, Sampayo-Cordero M, Malfettone A, Cortes J, Llombart-Cussac A; PHERGain steering committee and trial investigators. Chemotherapy de-escalation using an 18F-FDG-PET-based pathological response-adapted strategy in patients with HER2-positive early breast cancer (PHERGain): a multicentre, randomised, open-label, non-comparative, phase 2 trial. Lancet Oncol. 2021 Jun;22(6):858-871. doi: 10.1016/S1470-2045(21)00122-4. Epub 2021 May 18.

Drugs

Indications