A randomised phase II study investigating durvalumab in addition to an anthracycline taxane-based neoadjuvant therapy in early triple-negative breast cancer: clinical results and biomarker analysis of GeparNuevo study

Background: Combining immune-checkpoint inhibitors with chemotherapy yielded an increased response rates in patients with metastatic triple-negative breast cancer (TNBC). Therefore, we evaluated the addition of durvalumab to standard neoadjuvant chemotherapy (NACT) in primary TNBC. Patients and meth...

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Hauptverfasser: Loibl, Sibylle (VerfasserIn) , Untch, Michael (VerfasserIn) , Schneeweiss, Andreas (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 16 May 2019
In: Annals of oncology
Year: 2019, Jahrgang: 30, Heft: 8, Pages: 1279-1288
ISSN:1569-8041
DOI:10.1093/annonc/mdz158
Online-Zugang:Verlag, Volltext: https://doi.org/10.1093/annonc/mdz158
Verlag, Volltext: https://academic.oup.com/annonc/article/30/8/1279/5490226
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Verfasserangaben:S. Loibl, M. Untch, N. Burchardi, J. Huober, B.V. Sinn, J.-U. Blohmer, E.-M. Grischke, J. Furlanetto, H. Tesch, C. Hanusch, K. Engels, M. Rezai, C. Jackisch, W.D. Schmitt, G. von Minckwitz, J. Thomalla, S. Kümmel, B. Rautenberg, P.A. Fasching, K. Weber, K. Rhiem, C. Denkert, A. Schneeweiss

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245 1 2 |a A randomised phase II study investigating durvalumab in addition to an anthracycline taxane-based neoadjuvant therapy in early triple-negative breast cancer  |b clinical results and biomarker analysis of GeparNuevo study  |c S. Loibl, M. Untch, N. Burchardi, J. Huober, B.V. Sinn, J.-U. Blohmer, E.-M. Grischke, J. Furlanetto, H. Tesch, C. Hanusch, K. Engels, M. Rezai, C. Jackisch, W.D. Schmitt, G. von Minckwitz, J. Thomalla, S. Kümmel, B. Rautenberg, P.A. Fasching, K. Weber, K. Rhiem, C. Denkert, A. Schneeweiss 
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520 |a Background: Combining immune-checkpoint inhibitors with chemotherapy yielded an increased response rates in patients with metastatic triple-negative breast cancer (TNBC). Therefore, we evaluated the addition of durvalumab to standard neoadjuvant chemotherapy (NACT) in primary TNBC. Patients and methods: GeparNuevo is a randomised phase II double-blind placebo-controlled study randomising patients with TNBC to durvalumab or placebo given every 4 weeks in addition to nab-paclitaxel followed by standard EC. In the window-phase durvalumab/placebo alone was given 2 weeks before start of nab-paclitaxel. Randomisation was stratified by stromal tumour-infiltrating lymphocyte (sTILs). Patients with primary cT1b-cT4a-d disease, centrally confirmed TNBC and sTILs were included. Primary objective was pathological complete response (pCR) (ypT0 ypN0). Results: A total of 174 patients were randomised, 117 participated in the window-phase. Median age was 49.5 years (range 23–76); 47 patients (27%) were younger than 40 years; 113 (65%) had stage ≥IIA disease, 25 (14%) high sTILs, 138 of 158 (87%) were PD-L1-positive. pCR rate with durvalumab was 53.4% (95% CI 42.5% to 61.4%) versus placebo 44.2% (95% CI 33.5% to 55.3%; unadjusted continuity corrected χ2P = 0.287), corresponding to OR = 1.45 (95% CI 0.80–2.63, unadjusted Wald P = 0.224). Durvalumab effect was seen only in the window cohort (pCR 61.0% versus 41.4%, OR = 2.22, 95% CI 1.06–4.64, P = 0.035; interaction P = 0.048). In both arms, significantly increased pCR (P < 0.01) were observed with higher sTILs. There was a trend for increased pCR rates in PD-L1-positive tumours, which was significant for PD-L1-tumour cell in durvalumab (P = 0.045) and for PD-L1-immune cell in placebo arm (P = 0.040). The most common immune-related adverse events were thyroid dysfunction any grade in 47%.Conclusions: Our results suggest that the addition of durvalumab to anthracycline-/taxane-based NACT increases pCR rate particularly in patients treated with durvalumab alone before start of chemotherapy. Trial registration: ClinicalTrials.gov number: NCT02685059. 
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