Frequency of BRCA1 and BRCA2 mutations in unselected Ashkenazi Jewish patients with colorectal cancer - PubMed (original) (raw)
. 2004 Jan 7;96(1):68-70.
doi: 10.1093/jnci/djh006.
Affiliations
- PMID: 14709740
- DOI: 10.1093/jnci/djh006
Frequency of BRCA1 and BRCA2 mutations in unselected Ashkenazi Jewish patients with colorectal cancer
Tomas Kirchhoff et al. J Natl Cancer Inst. 2004.
Abstract
Mutations in BRCA1 and BRCA2 that predispose to breast and ovarian cancer are detected in approximately 2.5% of the Ashkenazi Jewish population. To explore whether carriers of Ashkenazi founder mutations in BRCA1 or BRCA2 have an increased risk for colorectal cancer, we screened 586 unselected Ashkenazi Jewish case patients with colorectal cancer for the three common founder mutations in BRCA1 and BRCA2. We identified six carriers (1.02%) among these case patients. After adjusting for age at diagnosis and sex by use of logistic regression analysis, we compared the incidence of carriers in this group of 586 case patients with that of 5012 Ashkenazi Jewish control subjects without a known history of colorectal cancer. The presence of a founder BRCA mutation was not associated with the risk of colorectal cancer (relative risk = 0.50, 95% confidence interval = 0.22 to 1.14). We thus recommend that counseling for colorectal cancer screening and prevention in individuals with BRCA mutations be based on the personal and family history of colorectal cancer or associated syndromic malignancies.
Comment in
- One less thing to worry about: the shrinking spectrum of tumors in BRCA founder mutation carriers.
Garber JE, Syngal S. Garber JE, et al. J Natl Cancer Inst. 2004 Jan 7;96(1):2-3. doi: 10.1093/jnci/djh021. J Natl Cancer Inst. 2004. PMID: 14709725 No abstract available. - Re: BRCA1 and BRCA2 founder mutations and the risk of colorectal cancer.
Friedenson B. Friedenson B. J Natl Cancer Inst. 2004 Aug 4;96(15):1184-5; author reply 1185-6. doi: 10.1093/jnci/djh236. J Natl Cancer Inst. 2004. PMID: 15292392 No abstract available.
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