Stratified by sex, age, and histological grade, the susceptibility to brain astrocytoma among the subjects with 5A/5A and 5A/6A genotypes and the subjects with 6A/6A genotype were similar(P>0.05).

• 根据性别、发病年龄、病理分级进行的分层分析显示,与6A/6A基因型相比,MMP-35A/5A和5A/6A基因型个体患肿瘤的发病风险与其它基因型个体差异无统计学意义;