PALB2, CHEK2 and ATM rare variants and cancer risk: data from COGS.
J Med Genet
; 53(12): 800-811, 2016 12.
Article
in En
| MEDLINE
| ID: mdl-27595995
ABSTRACT
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 (42â 671 cases and 42â 164 controls), as well as prostate (22â 301 cases and 22â 320 controls) and ovarian (14â 542 cases and 23â 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.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Prostatic Neoplasms
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Breast Neoplasms
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Nuclear Proteins
/
Genetic Predisposition to Disease
/
Tumor Suppressor Proteins
/
Ataxia Telangiectasia Mutated Proteins
/
Checkpoint Kinase 2
/
Mutation
Type of study:
Clinical_trials
/
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
J Med Genet
Year:
2016
Document type:
Article
Affiliation country:
Australia