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Pathological chemotherapy response score is prognostic in tubo-ovarian high-grade serous carcinoma: A systematic review and meta-analysis of individual patient data

  • The HGSC CRS Collaborative Network (Supplementary 1)
  • , Investigators
  • Bendat Family Comprehensive Cancer Centre
  • University of Western Australia
  • University of Notre Dame Australia
  • Barts Health NHS Trust
  • Vancouver General Hospital
  • King Edward Memorial Hospital for Women
  • The University of Western Australia
  • Sir Charles Gardiner Hospital
  • Case Western Reserve University School of Medicine
  • Technical University of Munich
  • Leiden University Medical Centre
  • Psicobiol. Univ. Fed. de Sao Paolo
  • Birmingham Women's Hospital Healthcare NHS Trust
  • University of Glasgow
  • Stanford University School of Medicine
  • Severance Hospital
  • Yonsei University College of Medicine
  • British Columbia Cancer Research Centre
  • Barts and The London School of Medicine and Dentistry
  • University College London Hospitals Trust
  • Queen Mary University of London
  • Royal London Hospital
  • Royal Devon and Exeter Hospital
  • Belfast Health and Social Care Trust
  • Imperial College London
  • Tata Medical Center
  • Department of Biophysics
  • Beatson West of Scotland Cancer Centre
  • Canterbury Health Laboratories
  • National Cancer Center Hospital
  • Università Cattolica del Sacro Cuore, Campus di Roma
  • Exeter Foundation Trust Hospital
  • St John of God Subiaco Hospital
  • Birmingham Women's Hospital
  • University of Southern Denmark
  • Università Cattolica del Sacro Cuore
  • Northern Ireland Cancer Centre
  • Department of Gynaecological Oncology
  • Canterbury District Health Board
  • City Hospital
  • Queen Elizabeth University Hospital, Glasgow
  • Queen's Hospital
  • Christchurch Women's Hospital
  • Duke University Medical Center
  • University of Otago, Christchurch
  • Western Diagnostic Pathology
  • Women Centre
  • University of British Columbia

Research output: Contribution to journalReview articlepeer-review

104 Scopus citations

Abstract

Objective: There is a need to develop and validate biomarkers for treatment response and survival in tubo-ovarian high-grade serous carcinoma (HGSC). The chemotherapy response score (CRS) stratifies patients into complete/near-complete (CRS3), partial (CRS2), and no/minimal (CRS1) response after neoadjuvant chemotherapy (NACT). Our aim was to review current evidence to determine whether the CRS is prognostic in women with tubo-ovarian HGSC treated with NACT. Methods: We established an international collaboration to conduct a systematic review and meta-analysis, pooling individual patient data from 16 sites in 11 countries. Patients had stage IIIC/IV HGSC, 3–4 NACT cycles and >6-months follow-up. Random effects models were used to derive combined odds ratios in the pooled population to investigate associations between CRS and progression free and overall survival (PFS and OS). Results: 877 patients were included from published and unpublished studies. Median PFS and OS were 15 months (IQR 5–65) and 28 months (IQR 7–92) respectively. CRS3 was seen in 249 patients (28%). The pooled hazard ratios (HR) for PFS and OS for CRS3 versus CRS1/CRS2 were 0·55 (95% CI, 0·45–0·66; P < 0·001) and 0·65 (95% CI 0·50–0·85, P = 0·002) respectively; no heterogeneity was identified (PFS: Q = 6·42, P = 0·698, I2 = 0·0%; OS: Q = 6·89, P = 0·648, I2 = 0·0%). CRS was significantly associated with PFS and OS in multivariate models adjusting for age and stage. Of 306 patients with known germline BRCA1/2 status, those with BRCA1/2 mutations (n = 80) were more likely to achieve CRS3 (P = 0·027). Conclusions: CRS3 was significantly associated with improved PFS and OS compared to CRS1/2. This validation of CRS in a real-world setting demonstrates it to be a robust and reproducible biomarker with potential to be incorporated into therapeutic decision-making and clinical trial design.

Original languageEnglish
Pages (from-to)441-448
Number of pages8
JournalGynecologic Oncology
Volume154
Issue number2
DOIs
StatePublished - Aug 2019

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Chemotherapy response score
  • High-grade serous tubo-ovarian cancer
  • Neoadjuvant chemotherapy
  • Prognosis

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