A genome-wide association scan (GWAS) for mean telomere length within the COGS project: identified loci show little association with hormone-related cancer risk

Karen A Pooley, Stig E Bojesen, Maren Weischer, Sune F Nielsen, Deborah Thompson, Ali Amin Al Olama, Kyriaki Michailidou, Jonathan P Tyrer, Sara Benlloch, Judith Brown, Tina Audley, Robert Luben, K-T Khaw, David E Neal, Freddie C Hamdy, Jenny L Donovan, Zsofia Kote-Jarai, Caroline Baynes, Mitul Shah, Manjeet K BollaQin Wang, Joe Dennis, Ed Dicks, Rongxi Yang, Anja Rudolph, Joellen Schildkraut, Jenny Chang-Claude, Barbara Burwinkel, Georgia Chenevix-Trench, Paul D P Pharoah, Andrew Berchuck, Rosalind A Eeles, Douglas F Easton, Alison M Dunning, Børge G Nordestgaard

94 Citations (Scopus)

Abstract

Mean telomere length (TL) in blood cells is heritable and has been reported to be associated with risks of several diseases, including cancer. We conducted a meta-analysis of three GWAS for TL (total n=2240) and selected 1629 variants for replication via the "iCOGS" custom genotyping array. All ~200 000 iCOGS variants were analysed with TL, and those displaying associations in healthy controls (n = 15 065) were further tested in breast cancer cases (n = 11 024). We found a novel TL association (Ptrend < 4 × 10-10) at 3p14.4 close to PXK and evidence (Ptrend < 7 × 10-7) for TL loci at 6p22.1 (ZNF311) and 20q11.2 (BCL2L1). We additionally confirmed (Ptrend < 5 × 10-14) the previously reported loci at 3q26.2 (TERC), 5p15.3 (TERT) and 10q24.3 (OBFC1) and found supportive evidence (Ptrend < 5 × 10-4) for the published loci at 2p16.2 (ACYP2), 4q32.2 (NAF1) and 20q13.3 (RTEL1). SNPs tagging these loci explain TL differences of up to 731 bp (corresponding to 18% of total TL in healthy individuals), however, they display little direct evidence for association with breast, ovarian or prostate cancer risks.

Original languageEnglish
JournalHuman Molecular Genetics
Volume22
Issue number24
Pages (from-to)5056-5064
ISSN0964-6906
DOIs
Publication statusPublished - Dec 2013

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