PALB2, CHEK2 and ATM rare variants and cancer risk: data from COGS

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  • Melissa C Southey
  • David E Goldgar
  • Robert Winqvist
  • Katri Pylkäs
  • Fergus Couch
  • Marc Tischkowitz
  • William D Foulkes
  • Joe Dennis
  • Kyriaki Michailidou
  • Elizabeth J van Rensburg
  • Tuomas Heikkinen
  • Heli Nevanlinna
  • John L Hopper
  • Thilo Dörk
  • Kathleen Bm Claes
  • Jorge Reis-Filho
  • Zhi Ling Teo
  • Paolo Radice
  • Irene Catucci
  • Paolo Peterlongo
  • Helen Tsimiklis
  • Fabrice A Odefrey
  • James G Dowty
  • Marjanka K Schmidt
  • Annegien Broeks
  • Frans B Hogervorst
  • Senno Verhoef
  • Jane Carpenter
  • Christine Clarke
  • Rodney J Scott
  • Peter A Fasching
  • Lothar Haeberle
  • Arif B Ekici
  • Matthias W Beckmann
  • Julian Peto
  • Isabel Dos-Santos-Silva
  • Olivia Fletcher
  • Nichola Johnson
  • Manjeet K Bolla
  • Elinor J Sawyer
  • Ian Tomlinson
  • Michael J Kerin
  • Nicola Miller
  • Federik Marme
  • Bojesen, Stig Egil
  • Nordestgaard, Børge
  • Kjær, Susanne Krüger
  • Høgdall, Estrid Vilma Solyom
  • Høgdall, Claus Kim
  • Svend Aage Engelholm
  • Australian Ovarian Cancer Study Group

BACKGROUND: The rarity of mutations in PALB2, CHEK2 and ATM make it difficult to estimate precisely associated cancer risks. Population-based family studies have provided evidence that at least some of these mutations are associated with breast cancer risk as high as those associated with rare BRCA2 mutations. We aimed to estimate the relative risks associated with specific rare variants in PALB2, CHEK2 and ATM via a multicentre case-control study.

METHODS: We genotyped 10 rare mutations using the custom iCOGS array: PALB2 c.1592delT, c.2816T>G and c.3113G>A, CHEK2 c.349A>G, c.538C>T, c.715G>A, c.1036C>T, c.1312G>T, and c.1343T>G and ATM c.7271T>G. We assessed associations with breast cancer risk (42 671 cases and 42 164 controls), as well as prostate (22 301 cases and 22 320 controls) and ovarian (14 542 cases and 23 491 controls) cancer risk, for each variant.

RESULTS: For European women, strong evidence of association with breast cancer risk was observed for PALB2 c.1592delT OR 3.44 (95% CI 1.39 to 8.52, p=7.1×10(-5)), PALB2 c.3113G>A OR 4.21 (95% CI 1.84 to 9.60, p=6.9×10(-8)) and ATM c.7271T>G OR 11.0 (95% CI 1.42 to 85.7, p=0.0012). We also found evidence of association with breast cancer risk for three variants in CHEK2, c.349A>G OR 2.26 (95% CI 1.29 to 3.95), c.1036C>T OR 5.06 (95% CI 1.09 to 23.5) and c.538C>T OR 1.33 (95% CI 1.05 to 1.67) (p≤0.017). Evidence for prostate cancer risk was observed for CHEK2 c.1343T>G OR 3.03 (95% CI 1.53 to 6.03, p=0.0006) for African men and CHEK2 c.1312G>T OR 2.21 (95% CI 1.06 to 4.63, p=0.030) for European men. No evidence of association with ovarian cancer was found for any of these variants.

CONCLUSIONS: This report adds to accumulating evidence that at least some variants in these genes are associated with an increased risk of breast cancer that is clinically important.

Original languageEnglish
JournalJournal of Medical Genetics
Issue number12
Pages (from-to)800-811
Publication statusPublished - Dec 2016

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