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Munroe PB, Addison S, Abrams DJ, Sebire NJ, Cartwright J, Donaldson I, Cohen MM, Mein C, Tinker A, Harmer SC, Aziz Q, Terry A, Struebig M, Warren HR, Vadgama B, Fowler DJ, Peebles D, Taylor AM, Lally PJ, Thayyil S. Postmortem Genetic Testing for Cardiac Ion Channelopathies in Stillbirths. CIRCULATION-GENOMIC AND PRECISION MEDICINE 2018; 11:e001817. [PMID: 29874177 DOI: 10.1161/circgen.117.001817] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 11/07/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Although stillbirth is a significant health problem worldwide, the definitive cause of death remains elusive in many cases, despite detailed autopsy. In this study of partly explained and unexplained stillbirths, we used next-generation sequencing to examine an extended panel of 35 candidate genes known to be associated with ion channel disorders and sudden cardiac death. METHODS AND RESULTS We examined tissue from 242 stillbirths (≥22 weeks), including those where no definite cause of death could be confirmed after a full autopsy. We obtained high-quality DNA from 70 cases, which were then sequenced for a custom panel of 35 genes, 12 for inherited long- and short-QT syndrome genes (LQT1-LQT12 and SQT1-3), and 23 additional candidate genes derived from genome-wide association studies. We examined the functional significance of a selected variant by patch-clamp electrophysiological recording. No predicted damaging variants were identified in KCNQ1 (LQT1) or KCNH2 (LQT2). A rare putative pathogenic variant was found in KCNJ2(LQT7) in 1 case, and several novel variants of uncertain significance were observed. The KCNJ2 variant (p. R40Q), when assessed by whole-cell patch clamp, affected the function of the channel. There was no significant evidence of enrichment of rare predicted damaging variants within any of the candidate genes. CONCLUSIONS Although a causative link is unclear, 1 putative pathogenic and variants of uncertain significance variant resulting in cardiac channelopathies was identified in some cases of otherwise unexplained stillbirth, and these variants may have a role in fetal demise. CLINICAL TRIAL REGISTRATION URL: https://www.clinicaltrials.gov. Unique identifier: NCT01120886.
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Affiliation(s)
- Patricia B Munroe
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.).
| | - Shea Addison
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Dominic J Abrams
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Neil J Sebire
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - James Cartwright
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Ian Donaldson
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Marta M Cohen
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Charles Mein
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Andrew Tinker
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Stephen C Harmer
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Qadeer Aziz
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Anna Terry
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Monika Struebig
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Helen R Warren
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Bhumita Vadgama
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Darren J Fowler
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Donald Peebles
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Andrew M Taylor
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Peter J Lally
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.)
| | - Sudhin Thayyil
- From the Clinical Pharmacology (P.B.M., S.A., J.C., A.T., S.C.H., Q.A., H.R.W.) and National Institute for Health Research Barts Cardiovascular Biomedical Research Unit (P.B.M., A.T., H.R.W.), William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, United Kingdom; Genome Centre, Queen Mary University of London, United Kingdom (I.D., C.M., A.T., M.S., B.V.); Centre for Perinatal Neuroscience, Imperial College London, United Kingdom (S.A., P.J.L., S.T.); Paediatric Cardiology, Children's Hospital Boston, MA (D.J.A.); Histopathology, Great Ormond Street Hospital, London, United Kingdom (N.J.S.); Histopathology, Sheffield Children's Hospital, United Kingdom (M.M.C.); Histopathology, Southampton General Hospital, United Kingdom (D.J.F.); Institute for Women's Health, San Antonio, TX (D.P.); and Institute for Cardiovascular Science, University College London, United Kingdom (A.M.T.).
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11
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Lemaitre RN, Johnson CO, Hesselson S, Sotoodehnia N, Sotoodhenia N, McKnight B, Sitlani CM, Rea TD, King IB, Kwok PY, Mak A, Li G, Brody J, Larson E, Mozaffarian D, Psaty BM, Huertas-Vazquez A, Tardif JC, Albert CM, Lyytikäinen LP, Arking DE, Kääb S, Huikuri HV, Krijthe BP, Eijgelsheim M, Wang YA, Reinier K, Lehtimäki T, Pulit SL, Brugada R, Müller-Nurasyid M, Newton-Cheh CH, Karhunen PJ, Stricker BH, Goyette P, Rotter JI, Chugh SS, Chakravarti A, Jouven X, Siscovick DS. Common variation in fatty acid metabolic genes and risk of incident sudden cardiac arrest. Heart Rhythm 2014; 11:471-7. [PMID: 24418166 PMCID: PMC3966996 DOI: 10.1016/j.hrthm.2014.01.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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.
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Affiliation(s)
- Rozenn N Lemaitre
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington.
| | - Catherine O Johnson
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Stephanie Hesselson
- Cardiovascular Research Institute and Institute for Human Genetics, University of California, San Francisco, California
| | | | - Nona Sotoodhenia
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Barbara McKnight
- Department of Biostatistics, University of Washington, Seattle, Washington
| | - Colleen M Sitlani
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Thomas D Rea
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Irena B King
- Department of Medicine, University of New Mexico, Albuquerque, New Mexico
| | - Pui-Yan Kwok
- Cardiovascular Research Institute and Institute for Human Genetics, University of California, San Francisco, California
| | - Angel Mak
- Cardiovascular Research Institute and Institute for Human Genetics, University of California, San Francisco, California
| | - Guo Li
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Jennifer Brody
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Eric Larson
- Group Health Research Institute, Seattle, Washington
| | - Dariush Mozaffarian
- Department of Epidemiology, Harvard University, Boston, Massachusetts; Divisions of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Bruce M Psaty
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington; Department of Epidemiology, University of Washington, Seattle, Washington; Health Services, University of Washington, Seattle, Washington; Group Health Research Institute, Seattle, Washington
| | | | - Jean-Claude Tardif
- Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada
| | - Christine M Albert
- Divisions of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts; Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Leo-Pekka Lyytikäinen
- Department of Clinical Chemistry, Fimlab Laboratories and University of Tampere School of Medicine, Tampere, Finland
| | - Dan E Arking
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Stefan Kääb
- Department of Medicine I, University Hospital Grosshadern, Ludwig-Maximilians-University and Munich Heart Alliance, Munich, Germany
| | - Heikki V Huikuri
- Institute of Clinical Medicine, Medical Research Center Oulu, University of Oulu, Oulu, Finland
| | - Bouwe P Krijthe
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands; Netherlands Consortium for Healthy Aging [NCHA], The Netherlands
| | - Mark Eijgelsheim
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ying A Wang
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts
| | - Kyndaron Reinier
- Cedars-Sinai Medical Center, Heart Institute, Los Angeles, California
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories and University of Tampere School of Medicine, Tampere, Finland
| | - Sara L Pulit
- Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts; Program in Medical and Population Genetics, the Broad Institute of the Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts
| | - Ramon Brugada
- Cardiovascular Genetics Center, Institut Investigació Biomèdica de Girona IDIBGI-Universitat de Girona, Girona, Spain
| | - Martina Müller-Nurasyid
- Department of Medicine I, University Hospital Grosshadern, and Institute of Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-Universität, Munich, Germany; Institute of Genetic Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Chris H Newton-Cheh
- Center for Human Genetic Research and Cardiology Division, Massachusetts General Hospital, Boston, Massachusetts; Framingham Heart Study, National Heart, Lung, and Blood Institute, National Institutes of Health, Framingham, Massachusetts
| | - Pekka J Karhunen
- Department of Forensic Medicine, Fimlab Laboratories and University of Tampere School of Medicine, Tampere, Finland
| | - Bruno H Stricker
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands; Netherlands Consortium for Healthy Aging [NCHA], The Netherlands; Department of Medical Informatics, Erasmus Medical Center, Rotterdam, The Netherlands; Inspectorate for Health Care, The Hague, The Netherlands
| | - Philippe Goyette
- Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada
| | - Jerome I Rotter
- Institute for Translational Genomics and Population Sciences, Los Angeles BioMedical Research Institute, Torrance, California; Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, California
| | - Sumeet S Chugh
- Cedars-Sinai Medical Center, Heart Institute, Los Angeles, California
| | - Aravinda Chakravarti
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Xavier Jouven
- Department of Cardiology, University Paris Descartes, Paris, France; Department of Epidemiology, University Paris Descartes, Paris, France
| | - David S Siscovick
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington; Department of Epidemiology, University of Washington, Seattle, Washington
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