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Variants in the ATM‐CHEK2‐BRCA1 axis determine genetic predisposition and clinical presentation of papillary thyroid carcinoma
Author(s) -
Wójcicka Anna,
Czetwertyńska Małgorzata,
Świerniak Michał,
Długosińska Joanna,
Maciąg Monika,
Czajka Agnieszka,
Dymecka Kinga,
Kubiak Anna,
Kot Adam,
Płoski Rafał,
Chapelle Albert,
Jażdżewski Krystian
Publication year - 2014
Publication title -
genes, chromosomes and cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.754
H-Index - 119
eISSN - 1098-2264
pISSN - 1045-2257
DOI - 10.1002/gcc.22162
Subject(s) - chek2 , penetrance , thyroid carcinoma , allele , genetic predisposition , odds ratio , genetics , thyroid cancer , genotype , cancer research , medicine , oncology , biology , germline mutation , cancer , mutation , gene , thyroid , phenotype
The risk of developing papillary thyroid carcinoma (PTC), the most frequent form of thyroid malignancy, is elevated up to 8.6‐fold in first‐degree relatives of PTC patients. The familial risk could be explained by high‐penetrance mutations in yet unidentified genes, or polygenic action of low‐penetrance alleles. Since the DNA‐damaging exposure to ionizing radiation is a known risk factor for thyroid cancer, polymorphisms in DNA repair genes are likely to affect this risk. In a search for low‐penetrance susceptibility alleles we employed Sequenom technology to genotype deleterious polymorphisms in ATM, CHEK2 , and BRCA1 in 1,781 PTC patients and 2,081 healthy controls. As a result of the study, we identified CHEK2 rs17879961 (OR = 2.2, P = 2.37e‐10) and BRCA1 rs16941 (odds ratio [OR] = 1.16, P = 0.005) as risk alleles for PTC. The ATM rs1801516 variant modifies the risk associated with the BRCA1 variant by 0.78 ( P = 0.02). Both the ATM and BRCA1 variants modify the impact of male gender on clinical variables: T status ( P = 0.007), N status ( P = 0.05), and stage ( P = 0.035). Our findings implicate an important role of variants in the ATM‐ CHEK2‐ BRCA1 axis in modification of the genetic predisposition to PTC and its clinical manifestations. © 2014 Wiley Periodicals, Inc.