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Gluz O, Kuemmel S, Nitz U, Braun M, Lüdtke-Heckenkamp K, von Schumann R, Darsow M, Forstbauer H, Potenberg J, Uleer C, Grischke EM, Aktas B, Schumacher C, Zu Eulenburg C, Kates R, Jóźwiak K, Graeser M, Wuerstlein R, Baehner R, Christgen M, Kreipe HH, Harbeck N. Nab-paclitaxel weekly versus dose-dense solvent-based paclitaxel followed by dose-dense epirubicin plus cyclophosphamide in high-risk HR+/HER2- early breast cancer: results from the neoadjuvant part of the WSG-ADAPT-HR+/HER2- trial. Ann Oncol 2023; 34:531-542. [PMID: 37062416 DOI: 10.1016/j.annonc.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/18/2023] Open
Abstract
BACKGROUND In high-risk hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2-) early breast cancer (EBC), nanoparticle albumin-bound (nab)-paclitaxel showed promising efficacy versus solvent-based (sb)-paclitaxel in neoadjuvant trials; however, optimal patient and therapy selection remains a topic of ongoing research. Here, we investigate the potential of Oncotype DX® recurrence score (RS) and endocrine therapy (ET) response (low post-endocrine Ki67) for therapy selection. PATIENTS AND METHODS Within the WSG-ADAPT trial (NCT01779206), high-risk HR+/HER2- EBC patients were randomized to (neo)adjuvant 4× sb-paclitaxel 175 mg/m2 q2w or 8× nab-paclitaxel 125 mg/m2 q1w, followed by 4× epirubicin + cyclophosphamide (90 mg + 600 mg) q2w; inclusion criteria: (i) cN0-1, RS 12-25, and post-ET Ki67 >10%; (ii) cN0-1 with RS >25. Patients with cN2-3 or (G3, baseline Ki67 ≥40%, and tumor size >1 cm) were allowed to be included without RS and/or ET response testing. Associations of key factors with pathological complete response (pCR) (primary) and survival (secondary) endpoints were analyzed using statistical mediation and moderation models. RESULTS Eight hundred and sixty-four patients received neoadjuvant nab-paclitaxel (n= 437) or sb-paclitaxel (n = 427); nab-paclitaxel was superior for pCR (20.8% versus 12.9%, P = 0.002). pCR was higher for RS >25 versus RS ≤25 (16.0% versus 8.4%, P = 0.021) and for ET non-response versus ET response (15.1% versus 6.0%, P = 0.027); no factors were predictive for the relative efficacy of nab-paclitaxel versus sb-paclitaxel. Patients with pCR had longer distant disease-free survival [dDFS; hazard ratio 0.42, 95% confidence interval (CI) 0.20-0.91, P = 0.024]. Despite favorable prognostic association of RS >25 versus RS ≤25 with pCR (odds ratio 3.11, 95% CI 1.71-5.63, P ≤ 0.001), higher RS was unfavorably associated with dDFS (hazard ratio 1.03, 95% CI 1.01-1.05, P = 0.010). CONCLUSIONS In high-risk HR+/HER2- EBC, neoadjuvant nab-paclitaxel q1w appears superior to sb-paclitaxel q2w regarding pCR. Combining RS and ET response assessment appears to select patients with highest pCR rates. The disadvantage of higher RS for dDFS is reduced in patients with pCR. These are the first results from a large neoadjuvant randomized trial supporting the use of RS to help select patients for neoadjuvant chemotherapy in high-risk HR+/HER2- EBC.
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Affiliation(s)
- O Gluz
- West German Study Group, Moenchengladbach; Breast Center Niederrhein, Ev. Hospital Bethesda, Moenchengladbach; University Clinics Cologne, Cologne.
| | - S Kuemmel
- West German Study Group, Moenchengladbach; Breast Unit, Kliniken Essen-Mitte, Essen; Department of Gynecology with Breast Center, Charité - Universitätsmedizin Berlin, Berlin
| | - U Nitz
- West German Study Group, Moenchengladbach; Breast Center Niederrhein, Ev. Hospital Bethesda, Moenchengladbach
| | - M Braun
- Breast Center, Rotkreuz Clinics Munich, Munich
| | - K Lüdtke-Heckenkamp
- Department of Oncology and Hematology, Niels Stensen-Kliniken, Georgsmarienhütte
| | - R von Schumann
- Breast Center Niederrhein, Ev. Hospital Bethesda, Moenchengladbach
| | - M Darsow
- Breast Center, Luisenhospital, Duesseldorf; Practice for Senologic Oncology, Duesseldorf
| | | | | | - C Uleer
- Frauenaerzte am Bahnhofsplatz, Practice of Gynecology and Oncology, Hildesheim
| | - E M Grischke
- Women's Clinic, University Clinics Tuebingen, Tuebingen
| | - B Aktas
- Women's Clinic, University Clinics Essen, Essen; University Clinics Leipzig, Women's Clinic, Leipzig
| | - C Schumacher
- Breast Center, St. Elisabeth Hospital Cologne, Cologne
| | - C Zu Eulenburg
- West German Study Group, Moenchengladbach; Department of Medical Biometry and Epidemiology, University Medical Center Hamburg, Hamburg
| | - R Kates
- West German Study Group, Moenchengladbach
| | - K Jóźwiak
- Institute of Biostatistics and Registry Research, Brandenburg Medical School Theodor Fontane, Neuruppin
| | - M Graeser
- West German Study Group, Moenchengladbach; Breast Center Niederrhein, Ev. Hospital Bethesda, Moenchengladbach; Department of Gynecology, University Medical Center Hamburg, Hamburg
| | - R Wuerstlein
- West German Study Group, Moenchengladbach; Breast Center, Department of Gynecology and Obstetrics and CCC Munich, LMU University Hospital, Munich, Germany
| | | | - M Christgen
- Institute of Pathology, Medical School Hannover, Hannover, Germany
| | - H H Kreipe
- Institute of Pathology, Medical School Hannover, Hannover, Germany
| | - N Harbeck
- West German Study Group, Moenchengladbach; Breast Center, Department of Gynecology and Obstetrics and CCC Munich, LMU University Hospital, Munich, Germany
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Witzel I, Loibl S, von Minckwitz G, Eidtmann H, Fehm T, Khandan F, Schmatloch S, Hauschild M, Bischoff J, Fasching PA, Mau C, Schem C, Rack B, Meinhold-Heerlein I, Liedtke C, Karn T, Huober J, Zu Eulenburg C, Issa-Nummer Y, Untch M, Müller V. Predictive value of HER2 serum levels in patients treated with lapatinib or trastuzumab -- a translational project in the neoadjuvant GeparQuinto trial. Br J Cancer 2012; 107:956-60. [PMID: 22892393 PMCID: PMC3464767 DOI: 10.1038/bjc.2012.353] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND We were able to demonstrate a predictive value of serum HER2 (sHER2) in patients receiving trastuzumab in the neoadjuvant GeparQuattro trial. However, the role of sHER2 in patients receiving neoadjuvant therapy (NT) with lapatinib is still unclear. METHODS The neoadjuvant GeparQuinto trial compared trastuzumab vs lapatinib in addition to chemotherapy in HER2-positive primary breast cancer patients. The sHER2 levels were measured by enzyme-linked immunosorbant assay in 210 patients, of whom 109 (52%) patients received trastuzumab and 101 (48%) lapatinib at three different time points. RESULTS Twenty-two percent of patients had elevated baseline sHER2 levels (>15 ng ml⁻¹). A decrease of sHER2 levels (>20%) in the trastuzumab and lapatinib-treated group during NT was seen in 44% and 24% of the patients, an increase of sHER2 levels (>20%) was seen in 6% and 41% of patients, respectively. Higher pre-chemotherapy sHER2 levels were associated with higher pathological complete remission (pCR) rates in the entire study cohort (OR 1.8, 95% CI 1.02-3.2, P=0.043). A decline of sHER2 levels (>20%) during NT was a predictor for pCR in the lapatinib-treated patient group (OR: 11.7, 95% CI 1.3-110, P=0.031). CONCLUSION Results of this study demonstrate that sHER2 levels change differently during NT depending on the anti-HER2 treatment strategy. Elevated baseline sHER2 levels (>15 ng ml⁻¹) and a decrease of sHER2 levels (>20%) early after therapy initiation are both relevant criteria to predict response to lapatinib-based treatment.
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Affiliation(s)
- I Witzel
- Department of Gynecology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
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