OBJECTIVE: To investigate the prevalence of CHEK2 c.1100delC mutation among non-BRCA1/BRCA2 familial/early-onset breast cancer patients in Shanghai. METHODS: One hundred and fourteen non-BRCA1/BRCA2 hereditary breast cancer patients were analyzed, among whom 76 cases had at least one first-degree relative affected with breast cancer and 38 cases were diagnosed as breast cancer below the age of 40 years without family history. The mutation genotyping of CHEK2 c.1100delC were carried out through long-range PCR amplifying of exons 10-14, and followed by amplification of exon 10 and then DNA direct sequencing. RESULTS: No c.1100delC frame-shift mutation was identified in our studied population. One novel missense mutation 1111C>T (p.His371Tyr), located in kinase catalytic domain, was found in 3 familial breast cancer cases but no one in control group. CONCLUSION: CHEK2 c.1100delC is rare variant for Chinese population and may not contribute to predisposition for hereditary breast cancer in Shanghai. Novel variant -1111C>T could be in association with genetic susceptibility to breast cancer. A further study is needed to confirm the results.
OBJECTIVE: To investigate the prevalence of CHEK2c.1100delC mutation among non-BRCA1/BRCA2 familial/early-onset breast cancerpatients in Shanghai. METHODS: One hundred and fourteen non-BRCA1/BRCA2hereditary breast cancerpatients were analyzed, among whom 76 cases had at least one first-degree relative affected with breast cancer and 38 cases were diagnosed as breast cancer below the age of 40 years without family history. The mutation genotyping of CHEK2c.1100delC were carried out through long-range PCR amplifying of exons 10-14, and followed by amplification of exon 10 and then DNA direct sequencing. RESULTS: No c.1100delC frame-shift mutation was identified in our studied population. One novel missense mutation 1111C>T (p.His371Tyr), located in kinase catalytic domain, was found in 3 familial breast cancer cases but no one in control group. CONCLUSION:CHEK2c.1100delC is rare variant for Chinese population and may not contribute to predisposition for hereditary breast cancer in Shanghai. Novel variant -1111C>T could be in association with genetic susceptibility to breast cancer. A further study is needed to confirm the results.
Authors: Suriati Mohamad; Nurismah Md Isa; Rohaizak Muhammad; Nor Aina Emran; Nor Mayah Kitan; Peter Kang; In Nee Kang; Nur Aishah Mohd Taib; Soo Hwang Teo; Sharifah Noor Akmal Journal: PLoS One Date: 2015-01-28 Impact factor: 3.240