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Poster display session

5297 - OlympiA: a randomized Phase III trial of olaparib as adjuvant therapy in patients with high-risk HER2-negative breast cancer (BC) and a germline BRCA1/2 mutation (gBRCAm)

Date

11 Sep 2017

Session

Poster display session

Topics

Cytotoxic Therapy;  Breast Cancer

Presenters

Andrew Tutt

Citation

Annals of Oncology (2017) 28 (suppl_5): v43-v67. 10.1093/annonc/mdx362

Authors

A. Tutt1, B. Kaufman2, J. Garber3, R. Gelber4, E. McFadden5, C. Goessl6, G. Viale7, C. Geyer8, D. Zardavas9, A. Arahmani10, D. Fumagalli11, E. De Azambuja11, N. Ponde11, P. Herbolsheimer12, W. Wu6, J. Constantino13, P. Rastogi14

Author affiliations

  • 1 Breast Cancer Now Research Unit, Division Of Cancer Studies, King's College London, SE1 9RT - London/GB
  • 2 Breast Medical Oncolog, Sheba Medical Center at Tel HaShomer, Ramat Gan/IL
  • 3 Center For Cancer Genetics And Prevention, Dana-Farber Cancer Institute, Boston, MA/US
  • 4 Center For Cancer Genetics And Prevention, Dana-Farber Cancer Institute, 2215 - Boston/US
  • 5 Statistics, Frontier Science, Inverness/GB
  • 6 Global Medicines Development, AstraZeneca, Gaithersburg/US
  • 7 Medical School Pathology, Istituto Europeo di Oncologia, 20141 - Milan/IT
  • 8 Massey Cancer Center, Virginia Commonwealth University, Richmond/US
  • 9 Associate Medical Director, Breast International Group, Brussels/BE
  • 10 Project Management Leader, Breast International Group, 1000 - Brussels/BE
  • 11 Breast International Group, Breast International Group, Brussels/BE
  • 12 Associate Medical Director, AstraZeneca, Gaithersburg/US
  • 13 Statistics, NRG Oncology, Philadelphia/US
  • 14 Division Of Hematology/oncology, Univ. of Pittsburgh Schools of the Health Sciences, Pittsburgh/US
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Resources

Abstract 5297

Background

In a Phase II study (NCT00494234), treatment with olaparib, a potent, orally available PARP inhibitor, exerted antitumor activity in patients (pts) with advanced BC harboring a gBRCAm. In a randomized phase III trial, olaparib significantly improved PFS compared to chemotherapy (CT) for patients with HER2-negative gBRCAm advanced BC (OlympiAD, NCT02000622, ASCO 2017). OlympiA (NCT02032823) is a phase III trial of olaparib as adjuvant therapy for pts with high risk gBRCAm HER2-negative BC who have completed local treatment and (neo)-adjuvant CT.

Trial design

OlympiA is a double-blind trial in which high risk HER2-negative pts are randomized (1:1) to receive treatment with olaparib (300 mg tablets bid [2 x 150 mg]) or placebo for 12 months. Eligible pts must have completed local treatment and at least 6 cycles of (neo)-adjuvant containing anthracyclines and/or taxanes. Pts with triple negative BC (TNBC) must have ≥pT2 or ≥pN1 in the adjuvant and non-pCR in the neoadjuvant setting. Pts with hormone receptor (HR) positive BC must have ≥4 positive lymph nodes in the adjuvant and non-pCR and CPS&EG score ≥3 in the neoadjuvant setting. Pts must also harbor a deleterious gBRCAm. Stratification factors include hormone receptor status, prior neoadjuvant versus adjuvant CT, and whether pts have received platinum therapy for current BC. The primary objective is invasive disease-free survival (IDFS). Efficacy assessments will be made by mammograms/breast MRI scans annually for 10 years, beginning 6 months from randomization, and by medical history/physical examination from randomization every 3 months for 2 years, then every 6 months for a further 3 years and annually thereafter. Secondary objectives include overall survival, distant DFS, incidence of new non-BCs, HRQoL, safety and tolerability. The primary IDFS analysis will be performed after 330 IDFS events using a stratified log-rank test. Patient enrolment began in April 2014 and is currently ongoing. The target number for randomization is 1500 patients across ∼500 sites and ∼25 countries worldwide. Support: U10CA12027,-69651,-37377,-69974,-180868,-180822, -189867; AstraZeneca.

Clinical trial identification

NCT00494234

Legal entity responsible for the study

AstraZeneca

Funding

AstraZeneca and NRG Oncology

Disclosure

A. Tutt: Grants/research support: AstraZeneca. C. Goessl: Employee, stock ownership: AstraZeneca. G. Viale: Advisory Board Member: AstraZeneca. D. Zardavas, A. Arahmani, D. Fumagalli: Research grants to BIG from AstraZeneca. P. Herbolsheimer, W. Wu: AstraZeneca employee. J. Constantino: Acts as the data center for the USA part of the OlympiA trial. While mainly funded by the US National Cancer Institute, the University receives funds from AstraZeneca for some aspects of OlympiA data center activity. All other authors have declared no conflicts of interest.

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