Heritability of Clot Formation, Morphology, and Lysis: The EuroCLOT Study

• Published in: Arteriosclerosis, thrombosis, and vascular biology Vol. 27; no. 12; pp. 2783 - 2789
• Main Authors: Carter, Angela M., Cymbalista, Charlotte M., Spector, Tim D., Grant, Peter J.
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA American Heart Association, Inc 01.12.2007; Hagerstown, MD Lippincott
• Subjects: Adult; Atherosclerosis (general aspects, experimental research); Biological and medical sciences; Blood and lymphatic vessels; Blood Coagulation - genetics; Blood Coagulation Tests - methods; Cardiology. Vascular system; Cardiovascular Diseases - blood; Cardiovascular Diseases - genetics; Cardiovascular system; Diseases of the peripheral vessels. Diseases of the vena cava. Miscellaneous; Europe; Female; Fibrinogen - metabolism; Fibrinolysis - genetics; Genetic Predisposition to Disease; Genetic Variation; Gynecology. Andrology. Obstetrics; Humans; Male; Mammary gland diseases; Medical sciences; Metabolic Syndrome - blood; Metabolic Syndrome - complications; Metabolic Syndrome - genetics; Middle Aged; Nephelometry and Turbidimetry; Pedigree; Pharmacology. Drug treatments; Plasminogen Activator Inhibitor 1 - blood; Risk Factors; Thrombosis - blood; Thrombosis - complications; Thrombosis - genetics; Time Factors; Tumors; Vasodilator agents. Cerebral vasodilators; Endocrinopathy; Vascular disease; Atherosclerosis; Lysis; Metabolic diseases; Cardiovascular disease; Metabolic syndrome; Fibrinolysis; coagulation; Clot; heritability
• ISSN: 1079-5642; 1524-4636; 1524-4636
• DOI: 10.1161/ATVBAHA.107.153221

OBJECTIVE—The relative balance between clot formation and fibrinolysis is considered to reflect thrombotic potential following vascular injury. The aims of the present study were to (1) to determine the contribution of genetic and environmental factors to variance in measures of clot structure/function in the Leeds Family Study, and (2) to determine the relationship between measures of clot structure/function and cardiovascular risk. METHODS AND RESULTS—Using high throughput turbidimetric assays, heritabilities of measures of clot formation, clot structure, and clot lysis were ≈0.30. Fibrinogen contributed to variance in all measures and plasminogen activator inhibitor-1 to variance in lysis variables. Subjects at increased cardiovascular risk due to the presence of the metabolic syndrome (MetS) had increased clot density (MaxAbsC0.358 [0.340, 0.375]au) and prolonged lysis times (LysT510 [6569, 7939]s) compared with those without MetS (MaxAbsC0.319 [0.310, 0.328]au, P=0.003; LysT7221 [4884, 5328]s, P<0.001). Furthermore, measures of clot structure/function increased progressively with increasing number of MetS components. CONCLUSIONS—This study indicates that genetic factors contribute modestly to variance in clot structure/function and that clot structure/function is related to presence of the MetS and number of MetS components. Identification of the genetic and environmental factors influencing clot structure/function may further our understanding of the underlying factors predisposing to cardiovascular disease.