@article {1304, title = {Identification of a sudden cardiac death susceptibility locus at 2q24.2 through genome-wide association in European ancestry individuals.}, journal = {PLoS Genet}, volume = {7}, year = {2011}, month = {2011 Jun}, pages = {e1002158}, abstract = {

Sudden cardiac death (SCD) continues to be one of the leading causes of mortality worldwide, with an annual incidence estimated at 250,000-300,000 in the United States and with the vast majority occurring in the setting of coronary disease. We performed a genome-wide association meta-analysis in 1,283 SCD cases and >20,000 control individuals of European ancestry from 5 studies, with follow-up genotyping in up to 3,119 SCD cases and 11,146 controls from 11 European ancestry studies, and identify the BAZ2B locus as associated with SCD (Pā€Š=ā€Š1.8{\texttimes}10(-10)). The risk allele, while ancestral, has a frequency of ~1.4\%, suggesting strong negative selection and increases risk for SCD by 1.92-fold per allele (95\% CI 1.57-2.34). We also tested the role of 49 SNPs previously implicated in modulating electrocardiographic traits (QRS, QT, and RR intervals). Consistent with epidemiological studies showing increased risk of SCD with prolonged QRS/QT intervals, the interval-prolonging alleles are in aggregate associated with increased risk for SCD (Pā€Š=ā€Š0.006).

}, keywords = {Adult, Aged, Alleles, Chromosomes, Human, Pair 2, Death, Sudden, Cardiac, European Continental Ancestry Group, Female, Genetic Loci, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Male, Middle Aged, Myocardial Contraction, Polymorphism, Single Nucleotide}, issn = {1553-7404}, doi = {10.1371/journal.pgen.1002158}, author = {Arking, Dan E and Junttila, M Juhani and Goyette, Philippe and Huertas-Vazquez, Adriana and Eijgelsheim, Mark and Blom, Marieke T and Newton-Cheh, Christopher and Reinier, Kyndaron and Teodorescu, Carmen and Uy-Evanado, Audrey and Carter-Monroe, Naima and Kaikkonen, Kari S and Kortelainen, Marja-Leena and Boucher, Gabrielle and Lagac{\'e}, Caroline and Moes, Anna and Zhao, XiaoQing and Kolodgie, Frank and Rivadeneira, Fernando and Hofman, Albert and Witteman, Jacqueline C M and Uitterlinden, Andr{\'e} G and Marsman, Roos F and Pazoki, Raha and Bardai, Abdennasser and Koster, Rudolph W and Dehghan, Abbas and Hwang, Shih-Jen and Bhatnagar, Pallav and Post, Wendy and Hilton, Gina and Prineas, Ronald J and Li, Man and K{\"o}ttgen, Anna and Ehret, Georg and Boerwinkle, Eric and Coresh, Josef and Kao, W H Linda and Psaty, Bruce M and Tomaselli, Gordon F and Sotoodehnia, Nona and Siscovick, David S and Burke, Greg L and Marb{\'a}n, Eduardo and Spooner, Peter M and Cupples, L Adrienne and Jui, Jonathan and Gunson, Karen and Kesaniemi, Y Antero and Wilde, Arthur A M and Tardif, Jean-Claude and O{\textquoteright}Donnell, Christopher J and Bezzina, Connie R and Virmani, Renu and Stricker, Bruno H C H and Tan, Hanno L and Albert, Christine M and Chakravarti, Aravinda and Rioux, John D and Huikuri, Heikki V and Chugh, Sumeet S} } @article {6325, title = {Common variation in fatty acid metabolic genes and risk of incident sudden cardiac arrest.}, journal = {Heart Rhythm}, volume = {11}, year = {2014}, month = {2014 Mar}, pages = {471-7}, abstract = {

BACKGROUND: There is limited information on genetic factors associated with sudden cardiac arrest (SCA).

OBJECTIVE: To assess the association of common variation in genes in fatty acid pathways with SCA risk.

METHODS: We selected 85 candidate genes and 1155 single nucleotide polymorphisms (SNPs) tagging common variation in each gene. We investigated the SNP associations with SCA in a population-based case-control study. Cases (n = 2160) were from a repository of SCA in the greater Seattle area. Controls (n = 2615), frequency-matched on age and sex, were from the same area. We used linear logistic regression to examine SNP associations with SCA. We performed permutation-based p-min tests to account for multiple comparisons within each gene. The SNP associations with a corrected P value of <.05 were then examined in a meta-analysis of these SNP associations in 9 replication studies totaling 2129 SCA cases and 23,833 noncases.

RESULTS: Eight SNPs in or near 8 genes were associated with SCA risk in the discovery study, one of which was nominally significant in the replication phase (rs7737692, minor allele frequency 36\%, near the LPCAT1 gene). For each copy of the minor allele, rs7737692 was associated with 13\% lower SCA risk (95\% confidence interval -21\% to -5\%) in the discovery phase and 9\% lower SCA risk (95\% confidence interval -16\% to -1\%) in the replication phase.

CONCLUSIONS: While none of the associations reached significance with Bonferroni correction, a common genetic variant near LPCAT1, a gene involved in the remodeling of phospholipids, was nominally associated with incident SCA risk. Further study is needed to validate this observation.

}, keywords = {1-Acylglycerophosphocholine O-Acyltransferase, Aged, Algorithms, Alleles, Case-Control Studies, Death, Sudden, Cardiac, Fatty Acids, Female, Genetic Predisposition to Disease, Genetic Variation, Genotype, Humans, Male, Polymorphism, Single Nucleotide, Risk Factors}, issn = {1556-3871}, doi = {10.1016/j.hrthm.2014.01.008}, author = {Lemaitre, Rozenn N and Johnson, Catherine O and Hesselson, Stephanie and Sotoodehnia, Nona and Sotoodhenia, Nona and McKnight, Barbara and Sitlani, Colleen M and Rea, Thomas D and King, Irena B and Kwok, Pui-Yan and Mak, Angel and Li, Guo and Brody, Jennifer and Larson, Eric and Mozaffarian, Dariush and Psaty, Bruce M and Huertas-Vazquez, Adriana and Tardif, Jean-Claude and Albert, Christine M and Lyytik{\"a}inen, Leo-Pekka and Arking, Dan E and K{\"a}{\"a}b, Stefan and Huikuri, Heikki V and Krijthe, Bouwe P and Eijgelsheim, Mark and Wang, Ying A and Reinier, Kyndaron and Lehtim{\"a}ki, Terho and Pulit, Sara L and Brugada, Ramon and M{\"u}ller-Nurasyid, Martina and Newton-Cheh, Chris H and Karhunen, Pekka J and Stricker, Bruno H and Goyette, Philippe and Rotter, Jerome I and Chugh, Sumeet S and Chakravarti, Aravinda and Jouven, Xavier and Siscovick, David S} }