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Estimation of Causal Effect of Age at Menarche on Pubertal Height Growth Using Mendelian Randomization
Journal article   Open access   Peer reviewed

Estimation of Causal Effect of Age at Menarche on Pubertal Height Growth Using Mendelian Randomization

Eun Jae Jo, Shizhong Han and Kai Wang
Genes, Vol.13(4), p.710
04/17/2022
DOI: 10.3390/genes13040710
PMCID: PMC9029282
PMID: 35456516
url
https://doi.org/10.3390/genes13040710View
Published (Version of record) Open Access

Abstract

We use Mendelian randomization to estimate the causal effect of age at menarche on late pubertal height growth and total pubertal height growth. The instrument SNPs selected from the exposure genome-wide association study (GWAS) are validated in additional population-matched exposure GWASs. Based on the inverse variance weighting method, there is a positive causal relationship of age at menarche on late pubertal growth (β^=0.56, 95% CI: (0.34, 0.78), p=3.16×10-7) and on total pubertal growth (β^=0.36, 95% CI: (0.14, 0.58), p=1.30×10-3). If the instrument SNPs are not validated in additional exposure GWASs, the estimated effect on late pubertal height growth increases by 3.6% to β^=0.58 (95% CI: (0.42, 0.73), p=4.38×10-13) while the estimates on total pubertal height growth increases by 41.7% to β^=0.51 (95% CI: (0.35, 0.67), p=2.96×10-11).
MR-Egger regression GWAS Mendelian randomization age at menarche inverse variance weighting pubertal height growth

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