Haworth KE, Farrell WE, Emes RD, Ismail KMK, Carroll WD, Hubball E, Rooney A, Yates AM, Mein C, Fryer AA. Methylation of the FGFR2 gene is associated with high
birth weight centile in humans.
Epigenomics 2015;
6:477-91. [PMID:
25431941 DOI:
10.2217/epi.14.40]
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Abstract
AIMS
This study examined links between DNA methylation and birth weight centile (BWC), and explored the impact of genetic variation.
MATERIALS & METHODS
Using HumanMethylation450 arrays, we examined candidate gene-associated CpGs in cord blood from newborns with low (<15th centile), medium (40-60th centile) and high (>85th centile) BWC (n = 12). Candidates were examined in an investigation cohort (n = 110) using pyrosequencing and genotyping for putative methylation-associated polymorphisms performed using standard PCR.
RESULTS
Array analysis identified 314 candidate genes associated with BWC extremes, four of which showed ≥ 4 BWC-linked CpGs. Of these, PM20D1 and MI886 suggested genetically determined methylation levels. However, methylation at three CpGs in FGFR2 remained significantly associated with high BWC (p = 0.004-0.027).
CONCLUSION
We identified a novel biologically plausible candidate (FGFR2) for with BWC that merits further study.
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