Culverhouse_2014_Addiction_109_814

Reference

Title : Multiple distinct CHRNB3-CHRNA6 variants are genetic risk factors for nicotine dependence in African Americans and European Americans - Culverhouse_2014_Addiction_109_814
Author(s) : Culverhouse RC , Johnson EO , Breslau N , Hatsukami DK , Sadler B , Brooks AI , Hesselbrock VM , Schuckit MA , Tischfield JA , Goate AM , Saccone NL , Bierut LJ
Ref : Addiction , 109 :814 , 2014
Abstract :

AIMS: Studies have shown association between common variants in the alpha6-beta3 nicotinic receptor subunit gene cluster and nicotine dependence in European ancestry populations. We investigate whether this generalizes to African Americans, whether the association is specific to nicotine dependence and whether this region contains additional genetic contributors to nicotine dependence. DESIGN: We examined consistency of association across studies and race between the alpha6beta3 nicotinic receptor subunit locus and nicotine, alcohol, marijuana and cocaine dependence in three independent studies. SETTING: United States of America. PARTICIPANTS: European Americans and African Americans from three case-control studies of substance dependence. MEASUREMENTS: Subjects were evaluated using the Semi-Structured Assessment for the Genetics of Alcoholism. Nicotine dependence was determined using the Fagerstrom Test for Nicotine Dependence. FINDINGS: The single nucleotide polymorphism rs13273442 was associated significantly with nicotine dependence across all three studies in both ancestry groups [odds ratio (OR) = 0.75, P = 5.8 x 10(-4) European Americans; OR = 0.80, P = 0.05 African Americans]. No other substance dependence was associated consistently with this variant in either group. Another SNP in the region, rs4952, remains modestly associated with nicotine dependence in the combined data after conditioning on rs13273442.
CONCLUSIONS: The common variant rs13273442 in the CHRNB3-CHNRA6 region is associated significantly with nicotine dependence in European Americans and African Americans across studies recruited for nicotine, alcohol and cocaine dependence. Although these data are modestly powered for other substances, our results provide no evidence that correlates of rs13273442 represent a general substance dependence liability. Additional variants probably account for some of the association of this region to nicotine dependence.

PubMedSearch : Culverhouse_2014_Addiction_109_814
PubMedID: 24401102

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Citations formats

Culverhouse RC, Johnson EO, Breslau N, Hatsukami DK, Sadler B, Brooks AI, Hesselbrock VM, Schuckit MA, Tischfield JA, Goate AM, Saccone NL, Bierut LJ (2014)
Multiple distinct CHRNB3-CHRNA6 variants are genetic risk factors for nicotine dependence in African Americans and European Americans
Addiction 109 :814

Culverhouse RC, Johnson EO, Breslau N, Hatsukami DK, Sadler B, Brooks AI, Hesselbrock VM, Schuckit MA, Tischfield JA, Goate AM, Saccone NL, Bierut LJ (2014)
Addiction 109 :814