Genetic Predictors of Fibrin D-Dimer Levels in Healthy Adults

NL Smith, JE Huffman, DP Strachan, J Huang, Abbas Dehghan, S Trompet, LM Lopez, SY Shin, J Baumert, V Vitart, JC Bis, SH Wild, A Rumley, Q Yang, André Uitterlinden, DJ Stott, G Davies, AM Carter, B Thorand, O PolasekB McKnight, H Campbell, AR Rudnicka, MH Chen, BM Buckley, SE Harris, A Peters, D Pulanic, T Lumley, AJM de Craen, DC Liewald, C Gieger, S Campbell, I Ford, AJ Gow, M Luciano, DJ Porteous, XQ Guo, N Sattar, A Tenesa, M Cushman, PE (Eline) Slagboom, PM Visscher, TD Spector, T Illig, I Rudan, EG Bovill, AF Wright, WL McArdle, G Tofler, Bert Hofman, RGJ Westendorp, JM Starr, PJ Grant, M Karakas, ND Hastie, BM Psaty, JF Wilson, GDO Lowe, CJ O'Donnell, JCM Witteman, JW Jukema, IJ Deary, N Soranzo, W Koenig, C Hayward

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Abstract

Background-Fibrin fragment D-dimer, one of several peptides produced when crosslinked fibrin is degraded by plasmin, is the most widely used clinical marker of activated blood coagulation. To identity genetic loci influencing D-dimer levels, we performed the first large-scale, genome-wide association search. Methods and Results-A genome-wide investigation of the genomic correlates of plasma D-dimer levels was conducted among 21 052 European-ancestry adults. Plasma levels of D-dimer were measured independently in each of 13 cohorts. Each study analyzed the association between approximate to 2.6 million genotyped and imputed variants across the 22 autosomal chromosomes and natural-log-transformed D-dimer levels using linear regression in additive genetic models adjusted for age and sex. Among all variants, 74 exceeded the genome-wide significance threshold and marked 3 regions. At 1p22, rs12029080 (P=6.4 x 10(-52)) was 46.0 kb upstream from F3, coagulation factor III (tissue factor). At 1q24, rs6687813 (P=2.4x10(-14)) was 79.7 kb downstream of F5, coagulation factor V. At 4q32, rs13109457 (P=2.9x10(-18)) was located between 2 fibrinogen genes: 10.4 kb downstream from FGG and 3.0 kb upstream from FGA. Variants were associated with a 0.099-, 0.096-, and 0.061-unit difference, respectively, in natural-log-transformed D-dimer and together accounted for 1.8% of the total variance. When adjusted for nonsynonymous substitutions in F5 and FGA loci known to be associated with D-dimer levels, there was no evidence of an additional association at either locus. Conclusions-Three genes were associated with fibrin D-dimer levels. Of these 3, the F3 association was the strongest, and has not been previously reported. (Circulation. 2011;123:1864-1872.)
Original languageUndefined/Unknown
Pages (from-to)1864-+
JournalCirculation
Volume123
Issue number17
DOIs
Publication statusPublished - 2011

Research programs

  • EMC MM-01-25-01
  • EMC MM-01-39-09-A
  • EMC NIHES-01-64-01

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