期刊
THROMBOSIS AND HAEMOSTASIS
卷 109, 期 3, 页码 458-463出版社
GEORG THIEME VERLAG KG
DOI: 10.1160/TH12-10-0743
关键词
Thrombophilia; deep venous thrombosis; risk factors; thrombosis; epidemiological studies
资金
- Swedish Heart-Lung Foundation
- Region Skane [REGSKANE-124611]
- Swedish Research Council [K2009-70X-15428-05-3, K2012-70X-15428-08-3]
- Swedish Council for Working Life and Social Research [2007-1754]
- Swedish Freemasons Foundation
- ALF funding, Region Skane
Venous thromboembolism (VTE) clusters in families, but the familial risk of VTE has only been determined in first-degree relatives. This nationwide study aimed to determine the familial risk of VTE in first-, second- and third-degree relatives of affected individuals. The Swedish Multi-Generation Register was linked to Hospital Discharge Register data for the period 1987-2009. This was a case-cohort study. Odds ratios (ORs) for VTE were calculated for individuals whose relatives were hospitalised for VIE, as determined by the International Classification of Diseases (ICD), and those whose relatives were unaffected by VTE. The familial OR for VTE was 2.49 in siblings (95% confidence interval [CI] 2.40-2.58), 2.65 in children (2.50-2.80), 2.09 in parents (2.03-2.15), 1.52 in maternal half-siblings (1.26-1.85), 2.34 in paternal half-siblings (2.00-2.73), 1.69 in nieces/nephews (1.57-1.82), 1.47 in cousins (1.33-1.64), and 1.14 in spouses of individuals diagnosed with VTE (1.09-1.18). Familial clustering was stronger at young ages. The familial transmission was slightly stronger for males compared with females but was only significant for siblings 1.13 (1.05-1.22) and parents 1.11 (1.05-1.78) of probands. The present data showing an increased VIE risk among not only first-degree relatives but also second- and third-degree relatives indicate that the genetic component of the familial clustering of VTE is strong. Family history is a potentially useful genetic surrogate marker for clinical VIE risk assessment, even in second- and third degree-relatives.
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