Journal article

Association of the CHEK2 c.1100delC variant, radiotherapy, and systemic treatment with contralateral breast cancer risk and breast cancer-specific survival

A Morra, MAC Schreurs, IL Andrulis, H Anton-Culver, A Augustinsson, MW Beckmann, S Behrens, SE Bojesen, MK Bolla, H Brauch, A Broeks, SS Buys, NJ Camp, JE Castelao, MH Cessna, J Chang-Claude, WK Chung, KK Sahlberg, AL Børresen-Dale, IT Gram Show all

Cancer Medicine | WILEY | Published : 2023

Open access

Abstract

Background: Breast cancer (BC) patients with a germline CHEK2 c.1100delC variant have an increased risk of contralateral BC (CBC) and worse BC-specific survival (BCSS) compared to non-carriers. Aim: To assessed the associations of CHEK2 c.1100delC, radiotherapy, and systemic treatment with CBC risk and BCSS. Methods: Analyses were based on 82,701 women diagnosed with a first primary invasive BC including 963 CHEK2 c.1100delC carriers; median follow-up was 9.1 years. Differential associations with treatment by CHEK2 c.1100delC status were tested by including interaction terms in a multivariable Cox regression model. A multi-state model was used for further insight into the relation between CH..

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Grants

Awarded by Horizon 2020 Framework Programme


Funding Acknowledgements

Canadian Institutes of Health Research, Grant/Award Number: GPH-129344; Cancer Research UK, Grant/Award Number: C12292/A11174, C1281/A12014, C1287/A10118, C1287/A10710, C1287/A16563, C5047/A10692, C5047/A15007, C5047/A8384 and C8197/A16565; US Department of Defence, Grant/Award Number: W81XWH-10-1-0341; European Union's Horizon 2020 Research and Innovation Programme, Grant/Award Number: 633784 and 634935; Fondation du cancer du sein du Quebec; FP7 Ideas: European Research Council, Grant/Award Number: HEALTH-F2-2009-223175; Genome Canada; Genome Quebec; Government of Canada; National Institutes of Health, Grant/Award Number: CA128978 and U19 CA148065; Post-Cancer GWAS initiative, Grant/Award Number: 1U19 CA148065, 1U19 CA148112 - the GAME-ON initiative and 1U19 CA148537; Wellcome Trust, Grant/Award Number: v203477/Z/16/Z