BMJ: 亲兄弟姐妹与表兄弟姐妹之间患家族性结直肠癌风险的差异

2019-04-13 不详 MedSci原创

众所周知,家族性结肠癌风险在一级亲属中是明显偏高的,但是与二级亲属之间的关系究竟是怎样的还不清楚,因此,本项研究旨在探讨结直肠癌患者家属中结直肠癌的风险,重点研究文献中缺乏的二级亲属,特别是表兄弟姐妹的亚型。

背景及目的
众所周知,家族性结肠癌风险在一级亲属中是明显偏高的,但是与二级亲属之间的关系究竟是怎样的还不清楚,因此,本项研究旨在探讨直肠癌患者家属中直肠癌的风险,重点研究文献中缺乏的二级亲属,特别是表兄弟姐妹的亚型。

方法:
研究人员通过瑞典国家健康数据库收集了所有居住在瑞典并在1931年之后出生的人以及他们的亲生父母的资料,总人数超过1600万,其中173796人发展为结肠直肠癌。主要观察结果为一级亲属和二级亲属的结直肠癌的终生(0-79岁)累积风险和标准化发病率。

结果
患者兄弟姐妹中结直肠癌的总体终生累积风险为7%,相对于没有任何结肠直肠癌家族史的患者,其风险增加了1.7倍(95%置信区间1.6至1.7; n = 2089)。在半兄弟姐妹中发现类似增加的终生累积风险(6%)(标准化发病率1.5,95%置信区间1.3至1.8; n = 140)。父母和半兄弟结肠直肠癌患者的风险(标准化发病率3.6, 95%置信区间2.4至5.0)。

结论
表兄弟姐妹的结直肠癌家族史与兄弟姐妹的结直肠癌风险相似。一个受影响的二级亲属患者的结直肠癌风险增加可忽略不计,除了一半的兄弟姐妹,但是一个受影响的二度亲属和一个受影响的一级亲属的家族史组合的风险大大增加。

原始出处:

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    2019-11-07 sjq027
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    2019-11-12 gaoxiaoe
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