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Gluz O, Nitz U, Kolberg-Liedtke C, Prat A, Christgen M, Kuemmel S, Mohammadian MP, Gebauer D, Kates R, Paré L, Grischke EM, Forstbauer H, Braun M, Warm M, Hackmann J, Uleer C, Aktas B, Schumacher C, Wuerstlein R, Graeser M, Pelz E, Jóźwiak K, Zu Eulenburg C, Kreipe HH, Harbeck N. De-escalated Neoadjuvant Chemotherapy in Early Triple-Negative Breast Cancer (TNBC): Impact of Molecular Markers and Final Survival Analysis of the WSG-ADAPT-TN Trial. Clin Cancer Res 2022; 28:4995-5003. [PMID: 35797219 DOI: 10.1158/1078-0432.ccr-22-0482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/13/2022] [Accepted: 07/05/2022] [Indexed: 01/24/2023]
Abstract
PURPOSE Although optimal treatment in early triple-negative breast cancer (TNBC) remains unclear, de-escalated chemotherapy appears to be an option in selected patients within this aggressive subtype. Previous studies have identified several pro-immune factors as prognostic markers in TNBC, but their predictive impact regarding different chemotherapy strategies is still controversial. EXPERIMENTAL DESIGN ADAPT-TN is a randomized neoadjuvant multicenter phase II trial in early patients with TNBC (n = 336) who were randomized to 12 weeks of nab-paclitaxel 125 mg/m2 + gemcitabine or carboplatin d 1,8 q3w. Omission of further (neo-) adjuvant chemotherapy was allowed only in patients with pathological complete response [pCR, primary endpoint (ypT0/is, ypN0)]. Secondary invasive/distant disease-free and overall survival (i/dDFS, OS) and translational research objectives included quantification of a predictive impact of markers regarding selection for chemotherapy de-escalation, measured by gene expression of 119 genes (including PAM50 subtype) by nCounter platform and stromal tumor-infiltrating lymphocytes (sTIL). RESULTS After 60 months of median follow-up, 12-week-pCR was favorably associated (HR, 0.24; P = 0.001) with 5y-iDFS of 90.6% versus 62.8%. No survival advantage of carboplatin use was observed, despite a higher pCR rate [HR, 1.04; 95% confidence interval (CI), 0.68-1.59]. Additional anthracycline-containing chemotherapy was not associated with a significant iDFS advantage in pCR patients (HR, 1.29; 95% CI, 0.41-4.02). Beyond pCR rate, nodal status and high sTILs were independently associated with better iDFS, dDFS, and OS by multivariable analysis. CONCLUSIONS Short de-escalated neoadjuvant taxane/platinum-based combination therapy appears to be a promising strategy in early TNBC for using pCR rate as an early decision point for further therapy (de-) escalation together with node-negative status and high sTILs. See related commentary by Sharma, p. 4840.
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Affiliation(s)
- Oleg Gluz
- West German Study Group, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Moenchengladbach, Germany.,University Clinics Cologne, Cologne, Germany
| | - Ulrike Nitz
- West German Study Group, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Moenchengladbach, Germany
| | | | - Aleix Prat
- Department of Medical Oncology, Hospital Clínic de Barcelona, Barcelona, Spain.,Translational Genomics and Targeted Therapies in Solid Tumors, August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
| | | | | | - Mohammad Parsa Mohammadian
- Institute of Biostatistics and Registry Research, Brandenburg Medical School "Theodor Finane," Neuruppin, Germany
| | | | - Ronald Kates
- West German Study Group, Moenchengladbach, Germany
| | - Laia Paré
- Department of Medical Oncology, Hospital Clínic de Barcelona, Barcelona, Spain.,Translational Genomics and Targeted Therapies in Solid Tumors, August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
| | | | | | - Michael Braun
- Rotkreuz Clinics Munich, Breast Center, Munich, Germany
| | - Mathias Warm
- City Hospital Holweide, Breast Center, Cologne, Germany
| | | | | | - Bahriye Aktas
- University Clinics Essen, Women's Clinic, Essen, Germany.,University Clinics Leipzig, Women's Clinic, Leipzig, Germany
| | | | - Rachel Wuerstlein
- West German Study Group, Moenchengladbach, Germany.,Department Obstetrics and Gynecology, Breast Center, LMU University Hospital and CCC Munich, Munich, Germany
| | - Monika Graeser
- West German Study Group, Moenchengladbach, Germany.,Ev. Hospital Bethesda, Breast Center Niederrhein, Moenchengladbach, Germany.,University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Enrico Pelz
- Institute of Pathology Viersen, Viersen, Germany
| | - Katarzyna Jóźwiak
- Institute of Biostatistics and Registry Research, Brandenburg Medical School "Theodor Finane," Neuruppin, Germany
| | - Christine Zu Eulenburg
- West German Study Group, Moenchengladbach, Germany.,University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Nadia Harbeck
- West German Study Group, Moenchengladbach, Germany.,Department Obstetrics and Gynecology, Breast Center, LMU University Hospital and CCC Munich, Munich, Germany
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