研究人员对1492名平均年龄为48岁的加拿大女性进行了跟踪调查。 她们携带的BRCA1和BRCA2两种乳腺癌易感基因都没有发生突变。

The study tracked 1,492 Canadian women with an average age of 48 who did not have mutations in either of two breast cancer susceptibility genes - BRCA1 and BRCA2.

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但是，与因继承了乳腺癌易感基因1和乳腺癌易感基因2中的某些基因突变而增加了5倍风险相比，这种冒险是小得多的。

But it's far smaller than the fivefold increased risk that comes from inheriting certain mutations in the BRCA1 and BRCA2 genes.

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结论凝血酶原突变基因20210 A可能增加了胃癌的遗传易感性。

Conclusion Prothrombin 20210a gene mutation may increase genetic susceptibility of gastric cancer.

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