A Genome-wide Study on the Perception of the Odorants Androstenone and Galaxolide

Overview

Journal Chem Senses

Publisher Oxford University Press

Specialty Biochemistry

Date 2012 Feb 25

PMID 22362865

Citations 10

Authors

Antti Knaapila

Gu Zhu

Sarah E Medland

Charles J Wysocki

Grant W Montgomery

Nicholas G Martin

Margaret J Wright

Danielle R Reed

Affiliations

Soon will be listed here.

Abstract

Twin pairs and their siblings rated the intensity of the odorants amyl acetate, androstenone, eugenol, Galaxolide, mercaptans, and rose (N = 1573). Heritability was established for ratings of androstenone (h (2) = 0.30) and Galaxolide (h(2) = 0.34) but not for the other odorants. Genome-wide association analysis using 2.3 million single nucleotide polymorphisms indicated that the most significant association was between androstenone and a region without known olfactory receptor genes (rs10966900, P = 1.2 × 10(-7)). A previously reported association between the olfactory receptor OR7D4 and the androstenone was not detected until we specifically typed this gene (P = 1.1 × 10(-4)). We also tested these 2 associations in a second independent sample of subjects and replicated the results either fully (OR7D4, P = 0.00002) or partially (rs10966900, P = 0.010; N = 266). These findings suggest that 1) the perceived intensity of some but not all odorants is a heritable trait, 2) use of a current genome-wide marker panel did not detect a known olfactory genotype-phenotype association, and 3) person-to-person differences in androstenone perception are influenced by OR7D4 genotype and perhaps by variants of other genes.

Citing Articles

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