Smokescreen: a targeted genotyping array for addiction research

Background Addictive disorders are a class of chronic, relapsing mental disorders that are responsible for increased risk of mental and medical disorders and represent the largest, potentially modifiable cause of death. Tobacco dependence is associated with increased risk of disease and premature death. While tobacco control efforts and therapeutic interventions have made good progress in reducing smoking prevalence, challenges remain in optimizing their effectiveness based on patient characteristics, including genetic variation. In order to maximize collaborative efforts to advance addiction research, we have developed a genotyping array called Smokescreen. This custom array builds upon previous work in the analyses of human genetic variation, the genetics of addiction, drug metabolism, and response to therapy, with an emphasis on smoking and nicotine addiction. Results The Smokescreen genotyping array includes 646,247 markers in 23 categories. The array design covers genome-wide common variation (65.67, 82.37, and 90.72 % in African (YRI), East Asian (ASN), and European (EUR) respectively); most of the variation with a minor allele frequency ≥ 0.01 in 1014 addiction genes (85.16, 89.51, and 90.49 % for YRI, ASN, and EUR respectively); and nearly all variation from the 1000 Genomes Project Phase 1, NHLBI GO Exome Sequencing Project and HapMap databases in the regions related to smoking behavior and nicotine metabolism: CHRNA5-CHRNA3-CHRNB4 and CYP2A6-CYP2B6. Of the 636 pilot DNA samples derived from blood or cell line biospecimens that were genotyped on the array, 622 (97.80 %) passed quality control. In passing samples, 90.08 % of markers passed quality control. The genotype reproducibility in 25 replicate pairs was 99.94 %. For 137 samples that overlapped with HapMap2 release 24, the genotype concordance was 99.76 %. In a genome-wide association analysis of the nicotine metabolite ratio in 315 individuals participating in nicotine metabolism laboratory studies, we identified genome-wide significant variants in the CYP2A6 region (min p = 9.10E-15). Conclusions We developed a comprehensive genotyping array for addiction research and demonstrated its analytic validity and utility through pilot genotyping of HapMap and study samples. This array allows researchers to perform genome-wide, candidate gene, and pathway-based association analyses of addiction, tobacco-use, treatment response, comorbidities, and associated diseases in a standardized, high-throughput platform. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2495-7) contains supplementary material, which is available to authorized users.

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PID https://www.doi.org/10.1186/s12864-016-2495-7
PID pmid:26921259
PID pmc:PMC4769529
URL http://link.springer.com/content/pdf/10.1186/s12864-016-2495-7.pdf
URL http://link.springer.com/article/10.1186/s12864-016-2495-7/fulltext.html
URL https://core.ac.uk/display/81921338
URL https://paperity.org/p/75450063/smokescreen-a-targeted-genotyping-array-for-addiction-research
URL https://bmcgenomics.biomedcentral.com/track/pdf/10.1186/s12864-016-2495-7
URL https://dx.doi.org/10.1186/s12864-016-2495-7
URL https://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-016-2495-7
URL http://europepmc.org/abstract/MED/26921259
URL http://europepmc.org/articles/PMC4769529
URL https://academic.microsoft.com/#/detail/2284353620
URL https://link.springer.com/article/10.1186%2Fs12864-016-2495-7
URL https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769529/
URL http://link.springer.com/content/pdf/10.1186/s12864-016-2495-7
URL http://dx.doi.org/10.1186/s12864-016-2495-7
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Access Right Open Access
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Author Andrew W Bergen, 0000-0002-1237-7644
Author Carissa Pardamean, 0000-0002-2567-1228
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Collected From Europe PubMed Central; PubMed Central; ORCID; UnpayWall; Datacite; Crossref; Microsoft Academic Graph; CORE (RIOXX-UK Aggregator)
Hosted By Europe PubMed Central; SpringerOpen; BMC Genomics
Journal BMC Genomics, 17, 1
Publication Date 2016-02-27
Publisher Springer Nature
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Language English
Resource Type Other literature type; Article; UNKNOWN
system:type publication
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Source https://science-innovation-policy.openaire.eu/search/publication?articleId=dedup_wf_001::a39d6d6fe6281939993731721a350739
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Last Updated 21 December 2020, 21:50 (CET)
Created 21 December 2020, 21:50 (CET)