Abstract |
Although several studies detected the BRCA1 germ-line mutations in Chinese women with familial breast cancer, most of them did not employ conventional full gene sequencing, especially in eastern China. In addition, the clinicopathological features of BRCA1-associated breast cancer in Chinese women were not well investigated. In this study, we screened the complete coding regions and exon-intron boundaries of BRCA1 by polymerase chain reaction (PCR)-sequencing assay. Immunohistochemistry analyses were performed on tumor samples to detect the expression of estrogen receptor (ER), progesterone receptor (PR), P53, and human epidermal growth factor receptor-2 (HER-2). Breast cancer patients having one or more affected relatives referred from the Zhejiang Cancer Hospital, eastern China during 2008-2011 were selected for the study. A total of 62 familial breast cancer patients received the BRCA1 germ-line mutation screening. Five deleterious mutations were detected in this cohort. The mutation rate was 11.3% (7/62). We found two novel mutations (3414delC and 5,280 C > T) and two recurrent mutations (5,273 G > A and 5589del8). BRCA1 mutation tumors tended to be negative for ER, PR, and HER-2, and exhibited high histological grade compared with tumors without BRCA1 mutations. Our study suggests that recurrent mutations may exist in eastern Chinese women with familial breast cancer and PCR-sequencing assay is a useful tool to screen these mutations. It also suggests that BRCA1-associated breast cancers in Chinese women exhibit an aggressive phenotype.
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Authors | Wenming Cao, Xiaojia Wang, Yun Gao, Hongjian Yang, Ji-Cheng Li |
Journal | Anatomical record (Hoboken, N.J. : 2007)
(Anat Rec (Hoboken))
Vol. 296
Issue 2
Pg. 273-8
(Feb 2013)
ISSN: 1932-8494 [Electronic] United States |
PMID | 23175448
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2012 Wiley Periodicals, Inc. |
Chemical References |
- BRCA1 Protein
- BRCA1 protein, human
- Biomarkers, Tumor
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Topics |
- Adult
- Aged
- Asian People
(genetics)
- BRCA1 Protein
(genetics)
- Biomarkers, Tumor
(analysis)
- Breast Neoplasms
(chemistry, ethnology, genetics, pathology)
- Chi-Square Distribution
- China
(epidemiology)
- DNA Mutational Analysis
(methods)
- Female
- Genetic Predisposition to Disease
- Germ-Line Mutation
- Humans
- Immunohistochemistry
- Middle Aged
- Mutation Rate
- Neoplasm Grading
- Pedigree
- Phenotype
- Polymerase Chain Reaction
- Polymorphism, Genetic
- Young Adult
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