@article {7675,
	title = {Multiethnic Meta-Analysis Identifies RAI1 as a Possible Obstructive Sleep Apnea-related Quantitative Trait Locus in Men.},
	journal = {Am J Respir Cell Mol Biol},
	volume = {58},
	year = {2018},
	month = {2018 Mar},
	pages = {391-401},
	abstract = {<p>Obstructive sleep apnea (OSA) is a common heritable disorder displaying marked sexual dimorphism in disease prevalence and progression. Previous genetic association studies have identified a few genetic loci associated with OSA and related quantitative traits, but they have only focused on single ethnic groups, and a large proportion of the heritability remains unexplained. The apnea-hypopnea index (AHI) is a commonly used quantitative measure characterizing OSA severity. Because OSA differs by sex, and the pathophysiology of obstructive events differ in rapid eye movement (REM) and non-REM (NREM) sleep, we hypothesized that additional genetic association signals would be identified by analyzing the NREM/REM-specific AHI and by conducting sex-specific analyses in multiethnic samples. We performed genome-wide association tests for up to 19,733 participants of African, Asian, European, and Hispanic/Latino American ancestry in 7 studies. We identified rs12936587 on chromosome 17 as a possible quantitative trait locus for NREM AHI in men (N = 6,737; P = 1.7 {\texttimes} 10) but not in women (P = 0.77). The association with NREM AHI was replicated in a physiological research study (N = 67; P = 0.047). This locus overlapping the RAI1 gene and encompassing genes PEMT1, SREBF1, and RASD1 was previously reported to be associated with coronary artery disease, lipid metabolism, and implicated in Potocki-Lupski syndrome and Smith-Magenis syndrome, which are characterized by abnormal sleep phenotypes. We also identified gene-by-sex interactions in suggestive association regions, suggesting that genetic variants for AHI appear to vary by sex, consistent with the clinical observations of strong sexual dimorphism.</p>},
	issn = {1535-4989},
	doi = {10.1165/rcmb.2017-0237OC},
	author = {Chen, Han and Cade, Brian E and Gleason, Kevin J and Bjonnes, Andrew C and Stilp, Adrienne M and Sofer, Tamar and Conomos, Matthew P and Ancoli-Israel, Sonia and Arens, Raanan and Azarbarzin, Ali and Bell, Graeme I and Below, Jennifer E and Chun, Sung and Evans, Daniel S and Ewert, Ralf and Frazier-Wood, Alexis C and Gharib, Sina A and Haba-Rubio, Jos{\'e} and Hagen, Erika W and Heinzer, Raphael and Hillman, David R and Johnson, W Craig and Kutalik, Zolt{\'a}n and Lane, Jacqueline M and Larkin, Emma K and Lee, Seung Ku and Liang, Jingjing and Loredo, Jose S and Mukherjee, Sutapa and Palmer, Lyle J and Papanicolaou, George J and Penzel, Thomas and Peppard, Paul E and Post, Wendy S and Ramos, Alberto R and Rice, Ken and Rotter, Jerome I and Sands, Scott A and Shah, Neomi A and Shin, Chol and Stone, Katie L and Stubbe, Beate and Sul, Jae Hoon and Tafti, Mehdi and Taylor, Kent D and Teumer, Alexander and Thornton, Timothy A and Tranah, Gregory J and Wang, Chaolong and Wang, Heming and Warby, Simon C and Wellman, D Andrew and Zee, Phyllis C and Hanis, Craig L and Laurie, Cathy C and Gottlieb, Daniel J and Patel, Sanjay R and Zhu, Xiaofeng and Sunyaev, Shamil R and Saxena, Richa and Lin, Xihong and Redline, Susan}
}
