Prevalence of BRCA1 and BRCA2 Mutations in Korean Breast Cancer Patients.
10.3346/jkms.2004.19.2.269
- Author:
Sei Hyun AHN
1
;
Ui Kang HWANG
;
Beom Seok KWAK
;
Ho Sung YOON
;
Bo Kyung KU
;
Hee Jun KANG
;
Ji Su KIM
;
Byung Kyun KO
;
Chang Dae KO
;
Kyung Sik YOON
;
Dae Yeon CHO
;
Jun Suk KIM
;
Byung Ho SON
Author Information
1. Department of Surgery, College of Medicine, University of Ulsan and Asan Medical Center, Seoul, Korea. brdrson@korea.com
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Breast Neoplasms;
Genes, BRCA1;
Prevalence;
Koreans
- MeSH:
BRCA1 Protein/*genetics;
BRCA2 Protein/*genetics;
Breast Neoplasms/*epidemiology/*genetics;
Female;
Genetic Predisposition to Disease/epidemiology;
Germ-Line Mutation;
Human;
Korea/epidemiology;
*Point Mutation;
Prevalence;
Risk Factors;
Support, Non-U.S. Gov't
- From:Journal of Korean Medical Science
2004;19(2):269-274
- CountryRepublic of Korea
- Language:English
-
Abstract:
The incidence of breast cancer in Korea has been increasing in recent years, such that it is now the most common female cancer. Breast cancer in Korea is characterized by an earlier age of onset than in Western countries, suggesting that it would be related with genetic background. We assayed germline mutations in the BRCA genes to evaluate their genetic pathology in Korean breast cancer patients. The study subjects consisted of 173 patients at clinically higher risk and 109 unselected patients. Germline mutations in the entire coding sequences of the BRCA1 and BRCA2 genes were analyzed by Conformation-Sensitive Gel Electrophoresis (CSGE), and any aberrantly-sized band was sequenced. BRCA mutations were present in 12.7% of the high risk patients, compared with 2.8% of the unselected patients. Among high risk patients, mutations were most prevalent in patients with a family history of breast or first-degree ovarian cancer (22.1%), followed by those with male breast cancer (20%), bilateral breast cancer (20%), multiple organ cancer including breast (13%) and younger breast cancer patients (aged<35 yr) (8.1%). Moreover, BRCA mutations were detected in 34.8% of patients having two highrisk factors. These findings suggest that BRCA gene mutation analysis should be performed on Korean patients with high-risk factors for breast cancer.
