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The prevalence of BRCA mutations among familial breast cancer patients in Korea: results of the Korean Hereditary Breast Cancer study.

Authors
Han, SA | Kim, SW | Kang, E | Park, SK | Ahn, SH | Lee, MH | Nam, SJ | Han, W | Bae, YT | Kim, HA | Cho, YU | Chang, MC | Paik, NS | Hwang, KT | Kim, SJ | Noh, DY | Choi, DH | Noh, WC | Kim, LS | Kim, KS  | Suh, YJ | Lee, JE | Jung, Y  | Moon, BI | Yang, JH | Son, BH | Yom, CK | Kim, SY | Lee, H | Jung, SH | KOHBRA Research Group and the Korean Breast Cancer Society
Citation
Familial cancer, 12(1). : 75-81, 2013
Journal Title
Familial cancer
ISSN
1389-96001573-7292
Abstract
The primary aim of this study was to estimate the prevalence of BRCA1/2 mutations among familial breast cancer (BC) patients in Korea. We analyzed 775 familial BC patients who were enrolled in the Korean Hereditary Breast Cancer (KOHBRA) study and treated at 36 institutions between May 2007 and May 2010. Patients with familial BC were defined as BC patients with family histories of BC or ovarian cancer (OC) in any relatives. All probands received genetic counseling and BRCA genetic testing was performed after obtaining informed consent. The mean age of BC diagnosis was 43.6 years. The numbers of probands with family histories of BC only and OC only were 682 and 93, respectively. The overall prevalence of the BRCA mutation among familial BC patients was 21.7 % (BRCA1 9.3 % and BRCA2 12.4 %). Subgroup analyses observed prevalences of the BRCA mutation as follows: 19.6 % among patients with BC family history only (BRCA1 7.6 % and BRCA2 12.0 %) and 36.6 % among patients with OC family history only (BRCA1 21.5 % and BRCA2 15.1 %). Most of the subgroups satisfied the 10 % probability criteria to undergo BRCA testing. However, the prevalence of the BRCA mutations among subgroups that had 2 BC patients in a family with both age at diagnosis of more than 50 years old did not reach the 10 % criteria (4.1 %). Korean familial BC patients are good candidates for BRCA testing even when they have family histories of single breast cancers. However, proband age at diagnosis should be carefully considered when selecting patients for testing.
MeSH

DOI
10.1007/s10689-012-9578-7
PMID
23131904
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Surgery
Ajou Authors
김, 구상  |  정, 용식
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