Genetic determinants of height growth assessed longitudinally from infancy to adulthood in the northern Finland birth cohort 1966 - PubMed (original) (raw)

. 2009 Mar;5(3):e1000409.

doi: 10.1371/journal.pgen.1000409. Epub 2009 Mar 6.

Amanda J Bennett, Iona Y Millwood, John Molitor, Paul F O'Reilly, Nicholas J Timpson, Marika Kaakinen, Jaana Laitinen, Jari Haukka, Demetris Pillas, Ioanna Tzoulaki, Jassy Molitor, Clive Hoggart, Lachlan J M Coin, John Whittaker, Anneli Pouta, Anna-Liisa Hartikainen, Nelson B Freimer, Elisabeth Widen, Leena Peltonen, Paul Elliott, Mark I McCarthy, Marjo-Riitta Jarvelin

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Genetic determinants of height growth assessed longitudinally from infancy to adulthood in the northern Finland birth cohort 1966

Ulla Sovio et al. PLoS Genet. 2009 Mar.

Abstract

Recent genome-wide association (GWA) studies have identified dozens of common variants associated with adult height. However, it is unknown how these variants influence height growth during childhood. We derived peak height velocity in infancy (PHV1) and puberty (PHV2) and timing of pubertal height growth spurt from parametric growth curves fitted to longitudinal height growth data to test their association with known height variants. The study consisted of N = 3,538 singletons from the prospective Northern Finland Birth Cohort 1966 with genotype data and frequent height measurements (on average 20 measurements per person) from 0-20 years. Twenty-six of the 48 variants tested associated with adult height (p<0.05, adjusted for sex and principal components) in this sample, all in the same direction as in previous GWA scans. Seven SNPs in or near the genes HHIP, DLEU7, UQCC, SF3B4/SV2A, LCORL, and HIST1H1D associated with PHV1 and five SNPs in or near SOCS2, SF3B4/SV2A, C17orf67, CABLES1, and DOT1L with PHV2 (p<0.05). We formally tested variants for interaction with age (infancy versus puberty) and found biologically meaningful evidence for an age-dependent effect for the SNP in SOCS2 (p = 0.0030) and for the SNP in HHIP (p = 0.045). We did not have similar prior evidence for the association between height variants and timing of pubertal height growth spurt as we had for PHVs, and none of the associations were statistically significant after correction for multiple testing. The fact that in this sample, less than half of the variants associated with adult height had a measurable effect on PHV1 or PHV2 is likely to reflect limited power to detect these associations in this dataset. Our study is the first genetic association analysis on longitudinal height growth in a prospective cohort from birth to adulthood and gives grounding for future research on the genetic regulation of human height during different periods of growth.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1

Figure 1. Mean-constant curves for height growth velocity between ages 8–16 y, estimated from the JPA-2 model (see Materials and Methods: Statistical Analyses), by sex and rs11107116 genotype (SOCS2 gene, Table S2).

Adult height increasing allele (T) is associated with higher PHV2 and earlier timing of pubertal height growth spurt.

Figure 2

Figure 2. Flow chart of genotyping strategy for the genetic association study on height growth in the NFBC1966.

The left arm shows genotyping done separately for 19 SNPs from Weedon et al, 2008 ; the right arm shows the GWA route to identify further 29 SNPs ,. The maximum number in final analyses was 3,538 with both growth and genotype information.

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