BRCA1 Mutations in Chinese Breast Cancer Patients
Author Information
Author(s): Sng J-H, Chang J, Feroze F, Rahman N, Tan W, Lim S, Lehnert M, Pool S van der, Wong J
Primary Institution: Oncology Research Institute (National University Medical Institutes) and Department of Medical Oncology, National University of Singapore
Hypothesis
The study aims to determine the prevalence of BRCA1 mutations in Chinese breast cancer patients in Singapore.
Conclusion
The prevalence of BRCA1 mutations in Chinese patients with early onset breast cancer is similar to that observed in Caucasian women.
Supporting Evidence
- Ten patients had both early onset breast cancer and affected relatives.
- All six disease-causing mutations occurred in women under 40 years.
- Three out of 22 patients under 35 years had BRCA1 mutations.
Takeaway
The study looked at breast cancer patients in Singapore to see how many had BRCA1 gene changes, finding that some did, but many did not.
Methodology
BRCA1 analysis was conducted in consecutive patients with breast cancer before the age of 40 years and those with affected relatives, using genomic DNA analysis methods.
Limitations
Most Chinese patients with affected relatives were not carriers of BRCA1 mutations.
Participant Demographics
The study included 76 women with early onset breast cancer and 16 women with affected relatives.
Digital Object Identifier (DOI)
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