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Garcia-Tejedor A, Ortega-Exposito C, Salinas S, Luzardo-González A, Falo C, Martinez-Pérez E, Pérez-Montero H, Soler-Monsó MT, Bajen MT, Benitez A, Ortega R, Petit A, Guma A, Campos M, Plà MJ, Pernas S, Peñafiel J, Yeste C, Gil-Gil M, Guedea F, Ponce J, Laplana M. Axillary lymph node dissection versus radiotherapy in breast cancer with positive sentinel nodes after neoadjuvant therapy (ADARNAT trial). Front Oncol 2023; 13:1184021. [PMID: 37621686 PMCID: PMC10446877 DOI: 10.3389/fonc.2023.1184021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 07/04/2023] [Indexed: 08/26/2023] Open
Abstract
Introduction Breast cancer surgery currently focuses on de-escalating treatment without compromising patient survival. Axillary radiotherapy (ART) now replaces axillary lymph node dissection (ALND) in patients with limited sentinel lymph node (SLN) involvement during the primary surgery, and this has significantly reduced the incidence of lymphedema without worsening the prognosis. However, patients treated with neoadjuvant systemic treatment (NST) cannot benefit from this option despite the low incidence of residual disease in the armpit in most cases. Data regarding the use of radiotherapy instead of ALND in this population are lacking. This study will assess whether ART is non-inferior to ALND in terms of recurrence and overall survival in patients with positive SLN after NST, including whether it reduces surgery-related adverse effects. Methods and analyses This multicenter, randomized, open-label, phase 3 trial will enroll 1660 patients with breast cancer and positive SLNs following NST in approximately 50 Spanish centers over 3 years. Patients will be stratified by NST regimen and nodal involvement (isolated tumoral cells or micrometastasis versus macrometastasis) and randomly assigned 1:1 to ART without ALND (study arm) or ALND alone (control arm). Level 3 and supraclavicular radiotherapy will be added in both arms. The primary outcome is the 5-year axillary recurrence determined by clinical and radiological examination. The secondary outcomes include lymphedema or arm dysfunction, quality of life based (EORTC QLQ-C30 and QLQ-BR23 questionnaires), disease-free survival, and overall survival. Discussion This study aims to provide data to confirm the efficacy and safety of ART over ALND in patients with a positive SLN after NST, together with the impact on morbidity. Ethics and dissemination The Research Ethics Committee of Bellvitge University Hospital approved this trial (Protocol Record PR148/21, version 3, 1/2/2022) and all patients must provide written informed consent. The involvement of around 50 centers across Spain will facilitate the dissemination of our results. Trial registration ClinicalTrials.gov, identifier number NCT04889924.
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Affiliation(s)
- Amparo Garcia-Tejedor
- Department of Gynaecology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Carlos Ortega-Exposito
- Department of Gynaecology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Sira Salinas
- Rehabilitation Service, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Ana Luzardo-González
- Rehabilitation Service, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Catalina Falo
- Department of Medical Oncology, Multidisciplinary Breast Cancer Unit, Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Evelyn Martinez-Pérez
- Department of Radiation Oncology, Multidisciplinary Breast Cancer Unit. Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Héctor Pérez-Montero
- Department of Radiation Oncology, Multidisciplinary Breast Cancer Unit. Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - M. Teresa Soler-Monsó
- Department of Pathology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Maria-Teresa Bajen
- Department of Nuclear Medicine, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Ana Benitez
- Department of Nuclear Medicine, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Raul Ortega
- Department of Radiology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Anna Petit
- Department of Pathology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Anna Guma
- Department of Radiology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Miriam Campos
- Department of Gynaecology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Maria J. Plà
- Department of Gynaecology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Sonia Pernas
- Department of Medical Oncology, Multidisciplinary Breast Cancer Unit, Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Judith Peñafiel
- Biostatistics Unit, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Carlos Yeste
- Degree in Biology, Monitoring, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Miguel Gil-Gil
- Department of Medical Oncology, Multidisciplinary Breast Cancer Unit, Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Ferran Guedea
- Department of Radiation Oncology, Multidisciplinary Breast Cancer Unit. Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Jordi Ponce
- Department of Gynaecology, Multidisciplinary Breast Cancer Unit, Hospital Universitari Bellvitge, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
| | - Maria Laplana
- Department of Radiation Oncology, Multidisciplinary Breast Cancer Unit. Institut Català d’Oncología, Instituto de Investigación Biomédica de Bellvitge, Barcelona, Spain
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