Genetic Study of Body Height in European Twins
Author Information
Author(s): Perola Markus, Sammalisto Sampo, Hiekkalinna Tero, Martin Nick G, Visscher Peter M, Montgomery Grant W, Benyamin Beben, Harris Jennifer R, Boomsma Dorret, Willemsen Gonneke, Hottenga Jouke-Jan, Christensen Kaare, Kyvik Kirsten Ohm, Sørensen Thorkild I. A, Pedersen Nancy L, Magnusson Patrik K. E, Spector Tim D, Widen Elisabeth, Silventoinen Karri, Kaprio Jaakko, Palotie Aarno, Peltonen Leena
Primary Institution: Department of Molecular Medicine, National Public Health Institute, Helsinki, Finland
Hypothesis
Can we identify common genetic loci associated with body stature in European twin populations?
Conclusion
The study found significant genetic loci associated with body height in European twins, particularly on chromosome 8.
Supporting Evidence
- The study analyzed data from 3,817 families and 8,450 individuals.
- Covariate-adjusted heritability of adult height was found to be 81%.
- Evidence for a major QTL for human stature was identified on chromosome 8q21.3.
- Suggestive evidence for loci on chromosomes X, 7, and 20 was also found.
- Sex-specific analyses revealed no significant female-specific QTLs.
Takeaway
Scientists looked at twins to understand why people are different heights and found some genes that might help explain it.
Methodology
Quantitative trait locus (QTL) analysis using genome-wide scans from twin cohorts across six countries.
Potential Biases
Potential bias due to the homogeneity of the sample population.
Limitations
The study may not account for all environmental factors affecting height.
Participant Demographics
Participants were European twins from Australia, Denmark, Finland, Netherlands, Sweden, and the United Kingdom.
Statistical Information
P-Value
0.08
Confidence Interval
0.04–0.15
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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