TY - JOUR T1 - Genetic predictors of fibrin D-dimer levels in healthy adults. JF - Circulation Y1 - 2011 A1 - Smith, Nicholas L A1 - Huffman, Jennifer E A1 - Strachan, David P A1 - Huang, Jie A1 - Dehghan, Abbas A1 - Trompet, Stella A1 - Lopez, Lorna M A1 - Shin, So-Youn A1 - Baumert, Jens A1 - Vitart, Veronique A1 - Bis, Joshua C A1 - Wild, Sarah H A1 - Rumley, Ann A1 - Yang, Qiong A1 - Uitterlinden, André G A1 - Stott, David J A1 - Davies, Gail A1 - Carter, Angela M A1 - Thorand, Barbara A1 - Polasek, Ozren A1 - McKnight, Barbara A1 - Campbell, Harry A1 - Rudnicka, Alicja R A1 - Chen, Ming-Huei A1 - Buckley, Brendan M A1 - Harris, Sarah E A1 - Peters, Annette A1 - Pulanic, Drazen A1 - Lumley, Thomas A1 - de Craen, Anton J M A1 - Liewald, David C A1 - Gieger, Christian A1 - Campbell, Susan A1 - Ford, Ian A1 - Gow, Alan J A1 - Luciano, Michelle A1 - Porteous, David J A1 - Guo, Xiuqing A1 - Sattar, Naveed A1 - Tenesa, Albert A1 - Cushman, Mary A1 - Slagboom, P Eline A1 - Visscher, Peter M A1 - Spector, Tim D A1 - Illig, Thomas A1 - Rudan, Igor A1 - Bovill, Edwin G A1 - Wright, Alan F A1 - McArdle, Wendy L A1 - Tofler, Geoffrey A1 - Hofman, Albert A1 - Westendorp, Rudi G J A1 - Starr, John M A1 - Grant, Peter J A1 - Karakas, Mahir A1 - Hastie, Nicholas D A1 - Psaty, Bruce M A1 - Wilson, James F A1 - Lowe, Gordon D O A1 - O'Donnell, Christopher J A1 - Witteman, Jacqueline C M A1 - Jukema, J Wouter A1 - Deary, Ian J A1 - Soranzo, Nicole A1 - Koenig, Wolfgang A1 - Hayward, Caroline KW - Adult KW - Aged KW - Blood Coagulation KW - European Continental Ancestry Group KW - Factor V KW - Female KW - Fibrin Fibrinogen Degradation Products KW - Fibrinogen KW - Genetic Testing KW - Genome-Wide Association Study KW - Humans KW - Male KW - Middle Aged KW - Reference Values KW - Thromboplastin AB -

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 ≈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=6.4×10(-52)) was 46.0 kb upstream from F3, coagulation factor III (tissue factor). At 1q24, rs6687813 (P=2.4×10(-14)) was 79.7 kb downstream of F5, coagulation factor V. At 4q32, rs13109457 (P=2.9×10(-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.

VL - 123 IS - 17 U1 - http://www.ncbi.nlm.nih.gov/pubmed/21502573?dopt=Abstract ER -