Runs of homozygosity identify a recessive locus 12q21.31 for human adult height - PubMed (original) (raw)

Runs of homozygosity identify a recessive locus 12q21.31 for human adult height

Tie-Lin Yang et al. J Clin Endocrinol Metab. 2010 Aug.

Abstract

Background: Runs of homozygosity (ROHs) have recently been proposed to have potential recessive significance for complex traits. Human adult height is a classic complex trait with heritability estimated up to 90%, and recessive loci that contribute to adult height variation have been identified.

Methods: Using the Affymetrix 500K array set, we performed a genome-wide ROHs analysis to identify genetic loci for adult height in a discovery sample including 998 unrelated Caucasian subjects from the midwest United States. For the significant ROHs identified, we replicated these findings in a family-based sample of 8385 Caucasian subjects from the Framingham Heart Study (FHS).

Results: Our results revealed one ROH, located in 12q21.31, that had a strong association with adult height variation both in the discovery (P=6.69x10(-6)) and replication samples (P=5.40x10(-5)). We further validated the presence of this ROH using the HapMap sample.

Conclusion: Our findings open a new avenue for identifying loci with recessive contributions to adult height variation. Further molecular and functional studies are needed to explore and clarify the potential mechanism.

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