Familial Aggregation of Amyotrophic Lateral Sclerosis

Familial Aggregation of Amyotrophic Lateral Sclerosis
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DOI:
10.1002/ana.21580
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发表时间:
2009-07-01
影响因子:
11.2
通讯作者:
Ye, Weimin
Ye, Weimin
中科院分区:
医学1区
文献类型:
--
作者:
Fang, Fang;Kamel, Freya;Ye, Weimin

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目的:评估 ALS 患者家庭中肌萎缩侧索硬化症 (ALS) 的相对风险。 方法:我们根据 1961 年至 2005 年瑞典多代登记册进行了一项队列研究。在 6,671 名先证者(家庭中的首例 ALS 病例)中,确定了 1,909 名全兄弟姐妹、13,947 名儿童和 5,405 名配偶(暴露组)。多代登记册中的其他人,即没有 ALS 的人的兄弟姐妹、子女或配偶,作为参照组。与参考组相比,暴露组中 ALS 的相对风险是通过泊松回归模型计算的。对瑞典双胞胎登记处登记的 86,441 对双胞胎中的 ALS 并发情况进行了评估。结果:与参考值相比,兄弟姐妹中发现 9 例 ALS,先证者的子女中发现 37 例,兄弟姐妹中的 ALS 风险是参考值的 17 倍(95% 置信区间,8.1-30.4),儿童中的风险是参考值的 9 倍(95% 置信区间,6.2-12.0)组。如果先证者在较年轻的年龄被诊断,则兄弟姐妹和儿童的超额风险更大,并且超额风险随着先证者诊断时年龄的增加而降低(p < 0.001)。配偶的风险没有显着增加(p = 0.27)。在 ALS 先证者的双胞胎中发现了 2 例,相对风险为 32(95% 置信区间,5.2-102.6)。解释:与参考组相比,ALS 患者的兄弟姐妹和子女患 ALS 的风险约为 10 倍。超额风险随年龄和亲属关系而变化,表明遗传在家族性 ALS 中发挥着重要作用。
Objective: To assess the relative risk for amyotrophic lateral sclerosis (ALS) in families of ALS patients.Methods: We conducted a cohort study based on the Swedish Multi-Generation Register in 1961 to 2005. Among 6,671 probands (first ALS case in the family), 1,909 full siblings, 13,947 children, and 5,405 spouses were identified (exposed group). Other persons in the Multi-Generation Register, who were siblings, children, or spouses to persons without ALS, served as the reference group. Relative risks for ALS among the exposed group, compared with the reference group, were calculated from Poisson regression models. Concurrence of ALS within twins was assessed in 86,441 twin pairs registered in the Swedish Twin Register.Results: Nine cases of ALS were noted among the siblings and 37 cases among the children of the probands, giving a 17-fold risk among the siblings (95% confidence interval, 8.1-30.4) and a 9-fold risk among the children (95% confidence interval, 6.2-12.0), compared with the reference group. Siblings and children had a greater excess risk if the proband was diagnosed at a younger age, and the excess risks decreased with increasing age at diagnosis of the proband (p < 0.001). Spouses had no significantly increased risk (p = 0.27). Two cases were identified among the cotwins of ALS probands, giving a relative risk of 32 (95% confidence interval, 5.2-102.6).Interpretation: The siblings and children of ALS patients have an about 10-fold risk for ALS compared with the reference group. The excess risks vary with both age and kinship, indicating a major genetic role in familial ALS.