Uncovering hidden variance: pair-wise SNP analysis accounts for additional variance in nicotine dependence.
- Authors
- Culverhouse, Robert C; Saccone, Nancy L; Stitzel, Jerry A; Wang, Jen C; Steinbach, Joseph H; Goate, Alison M; Schwantes-An, Tae-Hwi; Grucza, Richard A; Stevens, Victoria L; Bierut, Laura J
- Year
- 2011
- Journal
- Human genetics
- PMID
- 21079997
- DOI
- 10.1007/s00439-010-0911-7
- PMCID
- PMC3030551
Results from genome-wide association studies of complex traits account for only a modest proportion of the trait variance predicted to be due to genetics. We hypothesize that joint analysis of polymorphisms may account for more variance. We evaluated this hypothesis on a case-control smoking phenotype by examining pairs of nicotinic receptor single-nucleotide polymorphisms (SNPs) using the Restricted Partition Method (RPM) on data from the Collaborative Genetic Study of Nicotine Dependence (COGEND). We found evidence of joint effects that increase explained variance. Four signals identified in COGEND were testable in independent American Cancer Society (ACS) data, and three of the four signals replicated. Our results highlight two important lessons: joint effects that increase the explained variance are not limited to loci displaying substantial main effects, and joint effects need not display a significant interaction term in a logistic regression model. These results suggest that the joint analyses of variants may indeed account for part of the genetic variance left unexplained by single SNP analyses. Methodologies that limit analyses of joint effects to variants that demonstrate association in single SNP analyses, or require a significant interaction term, will likely miss important joint effects.
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| Name | Type |
|---|---|
| ACS Cancer Prevention Study-II Nutrition cohort local | cohort |
| ACS data local | cohort |
| African American | cohort |
| age | phenotype |
| American Community Survey | cohort |
| binary trait | phenotype |
| cancer | phenotype |
| cardiovascular disease | phenotype |
| CGASP local | cohort |
| Chinese | cohort |
| cholinergic nicotinic receptor subunit SNPs local | variant |
| chr15q25 local | gene |
| Chrna3 | gene |
| Chrna4 | gene |
| CHRNA5 | gene |
| Chrnb2 | gene |
| Chrnb4 | gene |
| CHRN subunit gene variants local | variant |
| cigarettes | phenotype |
| COGEND | cohort |
| COGEND dataset local | cohort |
| complex diseases | phenotype |
| complex traits | phenotype |
| Consortium for the Genetic Analysis of Smoking Phenotypes (CGASP) local | cohort |
| copy number variant | variant |
| CYP2A6 | gene |
| datasets | cohort |
| Detroit | cohort |
| diabetes | phenotype |
| dichotomous trait local | phenotype |
| efficiency of reproduction local | phenotype |
| European population | cohort |
| FTND-derived nicotine dependence phenotype local | phenotype |
| Gabbr1 | gene |
| Gabbr2 | gene |
| genetic data | drug |
| genetic variants | cohort |
| gross morphology local | phenotype |
| HapMap | cohort |
| heavy drinking | phenotype |
| heavy smoking phenotype local | phenotype |
| Heavy-smoking phenotype local | phenotype |
| heavy versus light smoking phenotype local | phenotype |
| hypertension | phenotype |
| Independent Dataset local | cohort |
| independent samples | cohort |
| infection | phenotype |
| Initial Dataset local | cohort |
| insertion/deletion | variant |
| inversion | variant |
| Koreans | cohort |
| light smokers | phenotype |
| light smoking phenotype local | phenotype |
| Light-smoking phenotype local | phenotype |
| longevity | phenotype |
| MAOA | gene |
| mesolimbic reward pathway local | anatomy |
| Meta-analysis of 76,972 subjects local | cohort |
| Minneapolis local | cohort |
| multi-locus genotype local | variant |
| neuronal nicotinic acetylcholine receptor genes local | gene |
| nicotine | drug |
| nicotine dependence | phenotype |
| nicotine receptor gene cluster local | gene |
| nicotinic receptor SNP local | variant |
| nicotinic receptor subunit genes local | gene |
| nicotinic receptor variants local | variant |
| Non-dependent smoking local | phenotype |
| obesity | phenotype |
| phenotype | phenotype |
| phenotypic variance | phenotype |
| Polymorphism | cohort |
| rare variant | cohort |
| replication sample | cohort |
| rs1051730 | variant |
| rs1061730 local | variant |
| rs13277524 | variant |
| rs1500948 local | variant |
| rs16969968 | variant |
| rs1696998 local | variant |
| rs17483548 local | variant |
| rs2133965 local | variant |
| rs2292977 local | variant |
| rs2611603 local | variant |
| rs3743075 local | variant |
| rs3787138 | variant |
| rs514743 local | variant |
| rs588765 | variant |
| rs667282 local | variant |
| rs680244 | variant |
| sex | phenotype |
| smoking | phenotype |
| smoking behavior | phenotype |
| smoking behaviors | phenotype |
| SNP | cohort |
| SNP in CHRNA5-CHRNA3-CHRNB4 cluster local | variant |
| SNP-pair local | variant |
| SNPs in cholinergic nicotinic receptor genes local | variant |
| St. Louis local | cohort |
| structural variant | cohort |
| Tobacco and Genetics Consortium | cohort |
| trait | phenotype |
| trait variance local | phenotype |
| translocation | variant |
| α5α3β4 cluster local | gene |
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In this knowledge base
External
| Title | Authors | Journal | Year | Link |
|---|---|---|---|---|
| Genome-wide DNA methylation differences in nucleus accumbens of smokers vs. nonsmokers. | Markunas CA et al. | — | 2021 | → |
| Alcohol and nicotine codependence-associated DNA methylation changes in promoter regions of addiction-related genes. | Xu H et al. | — | 2017 | → |
| Review: DNA methylation and alcohol use disorders: Progress and challenges. | Zhang H et al. | — | 2017 | → |
| Effect of neuronal nicotinic acetylcholine receptor genes (CHRN) on longitudinal cigarettes per day in adolescents and young adults. | Cannon DS et al. | — | 2014 | → |
| Genetic and neurophysiological correlates of the age of onset of alcohol use disorders in adolescents and young adults. | Chorlian DB et al. | — | 2013 | → |
| A likelihood ratio-based Mann-Whitney approach finds novel replicable joint gene action for type 2 diabetes. | Lu Q et al. | — | 2012 | → |