title: Mean telomere length and risk of incident venous thromboembolism: a prospective, nested case-control approach.
abstract: BACKGROUND
  Recent studies have shown telomere-length shortening as a risk predictor for cardiovascular disease. However, to date, no prospective data are available on its potential involvement in venous thromboembolism (VTE).
  
  
  METHODS
  Using leukocyte DNA samples collected at baseline in a prospective cohort of 14,916 initially healthy American men, we examined the relationship of mean telomere repeat copy number to single gene copy number (T/S ratio), using a modified quantitative polymerase chain reaction protocol, amongst 108 White males who subsequently developed a first ever VTE event and amongst an equal number of age- and smoking-matched White males who remained free of vascular events during follow-up (controls).
  
  
  RESULTS
  An inverse correlation between T/S ratios and age was observed in our controls (p=0.04). However, the T/S ratios were similar between cases and controls (p=0.31). Furthermore, in a multi-variable adjusted analysis, we found no evidence for an association of the observed T/S ratios with VTE risk (odds ratio=1.20; 95%CI=0.58-2.52; p=0.62).
  
  
  CONCLUSIONS
  The present investigation found no evidence for an association of relative telomere length with risk of incident VTE.
authors: Center for Cardiovascular Disease Prevention, Donald W. Reynolds Center for Cardiovascular Research, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA. rzee@rics.bwh.harvard.edu
authors: Robert Y L
authors: RY
authors: Zee
authors: Sherri E
authors: SE
authors: Michaud
authors: Paul M
authors: PM
authors: Ridker
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D015331:Cohort Studies; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D054556:Venous Thromboembolism / Q000235:genetics*