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American Heart Association, Circulation: Cardiovascular Genetics, 4(3), p. 348-357, 2010

DOI: 10.1161/circgenetics.109.906180

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Genetic determinants of major blood lipids in Pakistanis compared with Europeans.

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Background— Evidence is sparse about the genetic determinants of major lipids in Pakistanis. Methods and Results— Variants (n=45 000) across 2000 genes were assessed in 3200 Pakistanis and compared with 2450 Germans using the same gene array and similar lipid assays. We also did a meta-analysis of selected lipid-related variants in Europeans. Pakistani genetic architecture was distinct from that of several ethnic groups represented in international reference samples. Forty-one variants at 14 loci were significantly associated with levels of HDL-C, triglyceride, or LDL-C. The most significant lipid-related variants identified among Pakistanis corresponded to genes previously shown to be relevant to Europeans, such as CETP associated with HDL-C levels (rs711752; P <10 −13 ), APOA5/ZNF259 (rs651821; P <10 −13 ) and GCKR (rs1260326; P <10 −13 ) with triglyceride levels; and CELSR2 variants with LDL-C levels (rs646776; P <10 −9 ). For Pakistanis, these 41 variants explained 6.2%, 7.1%, and 0.9% of the variation in HDL-C, triglyceride, and LDL-C, respectively. Compared with Europeans, the allele frequency of rs662799 in APOA5 among Pakistanis was higher and its impact on triglyceride concentration was greater ( P -value for difference <10 −4 ). Conclusions— Several lipid-related genetic variants are common to Pakistanis and Europeans, though they explain only a modest proportion of population variation in lipid concentration. Allelic frequencies and effect sizes of lipid-related variants can differ between Pakistanis and Europeans.