@article {8407, title = {Role of Rare and Low-Frequency Variants in Gene-Alcohol Interactions on Plasma Lipid Levels.}, journal = {Circ Genom Precis Med}, volume = {13}, year = {2020}, month = {2020 Aug}, pages = {e002772}, abstract = {

BACKGROUND: Alcohol intake influences plasma lipid levels, and such effects may be moderated by genetic variants. We aimed to characterize the role of aggregated rare and low-frequency protein-coding variants in gene by alcohol consumption interactions associated with fasting plasma lipid levels.

METHODS: In the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium, fasting plasma triglycerides and high- and low-density lipoprotein cholesterol were measured in 34 153 individuals with European ancestry from 5 discovery studies and 32 277 individuals from 6 replication studies. Rare and low-frequency functional protein-coding variants (minor allele frequency, <=5\%) measured by an exome array were aggregated by genes and evaluated by a gene-environment interaction test and a joint test of genetic main and gene-environment interaction effects. Two dichotomous self-reported alcohol consumption variables, current drinker, defined as any recurrent drinking behavior, and regular drinker, defined as the subset of current drinkers who consume at least 2 drinks per week, were considered.

RESULTS: We discovered and replicated 21 gene-lipid associations at 13 known lipid loci through the joint test. Eight loci (, , , , , , , and ) remained significant after conditioning on the common index single-nucleotide polymorphism identified by previous genome-wide association studies, suggesting an independent role for rare and low-frequency variants at these loci. One significant gene-alcohol interaction on triglycerides in a novel locus was significantly discovered (=6.65{\texttimes}10 for the interaction test) and replicated at nominal significance level (=0.013) in .

CONCLUSIONS: In conclusion, this study applied new gene-based statistical approaches and suggested that rare and low-frequency genetic variants interacted with alcohol consumption on lipid levels.

}, issn = {2574-8300}, doi = {10.1161/CIRCGEN.119.002772}, author = {Wang, Zhe and Chen, Han and Bartz, Traci M and Bielak, Lawrence F and Chasman, Daniel I and Feitosa, Mary F and Franceschini, Nora and Guo, Xiuqing and Lim, Elise and Noordam, Raymond and Richard, Melissa A and Wang, Heming and Cade, Brian and Cupples, L Adrienne and de Vries, Paul S and Giulanini, Franco and Lee, Jiwon and Lemaitre, Rozenn N and Martin, Lisa W and Reiner, Alex P and Rich, Stephen S and Schreiner, Pamela J and Sidney, Stephen and Sitlani, Colleen M and Smith, Jennifer A and Willems van Dijk, Ko and Yao, Jie and Zhao, Wei and Fornage, Myriam and Kardia, Sharon L R and Kooperberg, Charles and Liu, Ching-Ti and Mook-Kanamori, Dennis O and Province, Michael A and Psaty, Bruce M and Redline, Susan and Ridker, Paul M and Rotter, Jerome I and Boerwinkle, Eric and Morrison, Alanna C} }