04132nas a2200709 4500008004100000022001400041245010500055210006900160260001600229300001200245490000700257520206100264653000902325653003102334653001902365653004002384653001102424653003402435653001102469653004902480653003302529653000902562653003602571100002202607700002602629700002002655700002202675700002202697700002002719700002202739700002002761700001702781700002102798700001602819700001802835700001802853700001802871700001702889700001902906700002002925700002202945700002302967700001902990700002203009700002203031700002203053700001903075700001803094700002303112700002103135700001903156700002403175700002003199700002503219700002203244700002003266700002303286700002503309700002703334700002503361856003603386 2011 eng d a1460-208300aA genome-wide association study identifies novel loci associated with circulating IGF-I and IGFBP-3.0 agenomewide association study identifies novel loci associated wi c2011 Mar 15 a1241-510 v203 a
Insulin-like growth factor-I (IGF-I) and insulin-like growth factor-binding protein-3 (IGFBP-3) are involved in cell replication, proliferation, differentiation, protein synthesis, carbohydrate homeostasis and bone metabolism. Circulating IGF-I and IGFBP-3 concentrations predict anthropometric traits and risk of cancer and cardiovascular disease. In a genome-wide association study of 10 280 middle-aged and older men and women from four community-based cohort studies, we confirmed a known association of single nucleotide polymorphisms in the IGFBP3 gene region on chromosome 7p12.3 with IGFBP-3 concentrations using a significance threshold of P < 5 × 10(-8) (P = 3.3 × 10(-101)). Furthermore, the same IGFBP3 gene locus (e.g. rs11977526) that was associated with IGFBP-3 concentrations was also associated with the opposite direction of effect, with IGF-I concentration after adjustment for IGFBP-3 concentration (P = 1.9 × 10(-26)). A novel and independent locus on chromosome 7p12.3 (rs700752) had genome-wide significant associations with higher IGFBP-3 (P = 4.4 × 10(-21)) and higher IGF-I (P = 4.9 × 10(-9)) concentrations; when the two measurements were adjusted for one another, the IGF-I association was attenuated but the IGFBP-3 association was not. Two additional loci demonstrated genome-wide significant associations with IGFBP-3 concentration (rs1065656, chromosome 16p13.3, P = 1.2 × 10(-11), IGFALS, a confirmatory finding; and rs4234798, chromosome 4p16.1, P = 4.5 × 10(-10), SORCS2, a novel finding). Together, the four genome-wide significant loci explained 6.5% of the population variation in IGFBP-3 concentration. Furthermore, we observed a borderline statistically significant association between IGF-I concentration and FOXO3 (rs2153960, chromosome 6q21, P = 5.1 × 10(-7)), a locus associated with longevity. These genetic loci deserve further investigation to elucidate the biological basis for the observed associations and clarify their possible role in IGF-mediated regulation of cell growth and metabolism.
10aAged10aChromosomes, Human, Pair 710aCohort Studies10aEuropean Continental Ancestry Group10aFemale10aGenome-Wide Association Study10aHumans10aInsulin-Like Growth Factor Binding Protein 310aInsulin-Like Growth Factor I10aMale10aPolymorphism, Single Nucleotide1 aKaplan, Robert, C1 aPetersen, Ann-Kristin1 aChen, Ming-Huei1 aTeumer, Alexander1 aGlazer, Nicole, L1 aDöring, Angela1 aLam, Carolyn, S P1 aFriedrich, Nele1 aNewman, Anne1 aMüller, Martina1 aYang, Qiong1 aHomuth, Georg1 aCappola, Anne1 aKlopp, Norman1 aSmith, Holly1 aErnst, Florian1 aPsaty, Bruce, M1 aWichmann, H-Erich1 aSawyer, Douglas, B1 aBiffar, Reiner1 aRotter, Jerome, I1 aGieger, Christian1 aSullivan, Lisa, S1 aVölzke, Henry1 aRice, Kenneth1 aSpyroglou, Ariadni1 aKroemer, Heyo, K1 aChen, Y-D, Ida1 aManolopoulou, Jenny1 aNauck, Matthias1 aStrickler, Howard, D1 aGoodarzi, Mark, O1 aReincke, Martin1 aPollak, Michael, N1 aBidlingmaier, Martin1 aVasan, Ramachandran, S1 aWallaschofski, Henri uhttps://chs-nhlbi.org/node/1261