Funding agencies: This work was supported by NIH grants (R01HD053685, R01HD012252).
Gene-by-age effects on BMI from birth to adulthood: The fels longitudinal study
Article first published online: 13 AUG 2013
Copyright © 2013 The Obesity Society
Volume 22, Issue 3, pages 875–881, March 2014
How to Cite
Choh, A. C., Lee, M., Kent, J. W., Diego, V. P., Johnson, W., Curran, J. E., Dyer, T. D., Bellis, C., Blangero, J., Siervogel, R. M., Towne, B., Demerath, E. W. and Czerwinski, S. A. (2014), Gene-by-age effects on BMI from birth to adulthood: The fels longitudinal study. Obesity, 22: 875–881. doi: 10.1002/oby.20517
Disclosures: The authors have no conflicts of interest to declare.
Author contributions: Design and concept of study: ACC, SAC, ML, EWD, WJ; data analysis and interpretation: ACC, ML, SAC, JWK, VPD, JB; data quality control and cleaning: JEC, TDD, CB, JB, JWK, ACC, SAC, BT, RMS; acquisition of funding: SAC, EWD, BT, RMS. All authors were involved in writing the article and had final approval of the submitted and published versions.
- Issue published online: 5 MAR 2014
- Article first published online: 13 AUG 2013
- Accepted manuscript online: 22 JUN 2013 02:32AM EST
- Manuscript Accepted: 3 JUN 2013
- Manuscript Revised: 10 APR 2013
- Manuscript Received: 16 SEP 2012
Genome wide association studies have shown 32 loci to influence BMI in European-American adults but replication in other studies is inconsistent and may be attributed to gene-by-age effects. The aims of this study were to determine if the influence of the summed risk score of these 32 loci (GRS) on BMI differed across age from birth to 40 years, and to determine if additive genetic effects other than those in the GRS differed by age.
Serial measures of BMI were calculated at 0, 1, 3, 6, 9, 12, 18, and 28 months, and 4, 7, 11, 15, 19, 23, 30, and 40 years for 1,176 (605 females, 571 males) European-American participants in the Fels Longitudinal Study. SOLAR was used for genetic analyses.
GRS was significant (P < 0.05) at ages: 6, 9 months, 4-15 years, and 23-40 years. Remaining additive genetic effects independently influenced BMI (P < 5.3 × 10−5, 0.40 < h2 < 0.76). Some genetic correlations between ages were not significant. Differential GRS effects did not retain significance after multiple comparisons adjustments.
While well-known BMI variants do not appear to have significant differential effects, other additive genes differ over the lifespan.