Sequence variant on 9p21 is associated with the presence of abdominal aortic aneurysm disease but does not have an impact on aneurysmal expansion |
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| Authors: | Thompson Andrew R Golledge Jonathan Cooper Jackie A Hafez Hany Norman Paul E Humphries Steve E |
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| Affiliation: | 1Department of Cardiovascular Genetics, Rayne Building, UCL, UK;2Department of Vascular Surgery, Royal West Sussex NHS Trust, Chichester, UK;3Vascular Biology Unit, School of Medicine and Dentistry, James Cook University, Townsville, Australia;4School of Surgery, University of Western Australia, Fremantle, WA, Australia |
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| Abstract: | Abdominal aortic aneurysm (AAA) is among a number of vascular disorders to be recently associated with a common allelic variant situated on chromosome 9p21. To further assess the significance of this region of the genome in AAA development, we genotyped the sequence variation tagged by rs10757278 in two geographically independent cohorts of patients and compared them to matched controls. We also assessed the impact of this variant on AAA growth rate in cohorts with a median surveillance period of 3.2 and 4.5 years. Using meta-analysis to combine the findings of both cohorts, we found a significant association between rs10757278-G and the presence of AAA (OR (95%CI) 1.38 (1.04-1.82) P=0.03), an effect size completely consistent with that originally reported. rs10757278 was not significantly associated with altered AAA growth rate in either cohort. |
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| Keywords: | aneurysm genetic variant growth chromosome 9p21 |
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