An evaluation of candidate genes of inflammation and thrombosis in relation to the risk of venous thromboembolism: The Women's Genome Health Study.
BACKGROUND
Although pathways associated with hemostasis and thrombosis are well documented to have an impact on venous thromboembolism (VTE), whether the inflammatory cascade also influences VTE risk is uncertain.


RESULTS
We evaluated 51 polymorphisms from 32 inflammation-related genes (and an additional 19 polymorphisms from 15 thrombosis-related genes) as potential determinants of VTE in a prospective cohort of 22 413 white women followed over a 10-year period. Hazard ratios (HRs) for incident VTE according to the different genotypes were assessed by Cox proportional-hazards models. The false discovery rate (FDR) was used for correction for multiple testing with a 0.20 cut point. During follow-up, 158 idiopathic and 180 secondary VTE events occurred. As anticipated, factor V Leiden (HR, 3.22; 95% CI, 1.92 to 5.40; P<0.0001; FDR=0.004) and the prothrombin mutation (HR, 2.57; 95% CI, 1.64 to 4.02; P<0.0001; FDR=0.004) were both strongly associated with incident idiopathic VTE, as was the rs6046 polymorphism in the factor VII gene (HR, 0.54; 95% CI, 0.35 to 0.86; P=0.008; FDR, 0.12). With regard to polymorphism in the inflammatory genes, variation at rs1143634 in the IL-1beta gene was associated with a reduced risk of idiopathic VTE (HR, 0.59; 95% CI, 0.44 to 0.80; P=0.0007; FDR=0.02), whereas variation at rs1800872 in the IL-10 gene was associated with increased risk (HR, 1.42; 95% CI, 1.12 to 1.80; P=0.004; FDR=0.07). By contrast, no significant associations were found for secondary VTE events.


CONCLUSIONS
In addition to previously reported polymorphisms associated with hemostasis and thrombosis, these prospective cohort data suggest that genetic variation in IL-1 beta and IL-10 genes may also influence the risk of idiopathic VTE.
Zee
Robert Y L
RY
Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA. rzee@rics.bwh.harvard.edu
Glynn
Robert J
RJ
Cheng
Suzanne
S
Steiner
Lori
L
Rose
Lynda
L
Ridker
Paul M
PM
D015331:Cohort Studies; D005165:Factor V / Q000235:genetics; D005167:Factor VII / Q000235:genetics; D005260:Female; D005838:Genotype; D006801:Humans; D007249:Inflammation / Q000235:genetics*; D016753:Interleukin-10 / Q000235:genetics; D053583:Interleukin-1beta / Q000235:genetics; D011110:Polymorphism, Genetic; D011516:Prothrombin / Q000235:genetics; D012307:Risk Factors; D013927:Thrombosis / Q000235:genetics*; D054556:Venous Thromboembolism / Q000235:genetics*
D053583:Interleukin-1beta; C095381:factor V Leiden; D016753:Interleukin-10; D005165:Factor V; D005167:Factor VII; D011516:Prothrombin