Shaun Purcell

Summary

Affiliation: Massachusetts Institute of Technology
Country: USA

Publications

  1. pmc Parental phenotypes in family-based association analysis
    Shaun Purcell
    Whitehead Institute for Biomedical Research, Cambridge, MA, USA
    Am J Hum Genet 76:249-59. 2005
  2. pmc Two independent alleles at 6q23 associated with risk of rheumatoid arthritis
    Robert M Plenge
    Program in Medical and Population Genetics, Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
    Nat Genet 39:1477-82. 2007
  3. ncbi request reprint Genome-wide association analysis identifies loci for type 2 diabetes and triglyceride levels
    Richa Saxena
    Broad Institute of Harvard and Massachusetts Institute of Technology MIT, Cambridge, MA 02142, USA
    Science 316:1331-6. 2007
  4. pmc Integrated genotype calling and association analysis of SNPs, common copy number polymorphisms and rare CNVs
    Joshua M Korn
    Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
    Nat Genet 40:1253-60. 2008
  5. ncbi request reprint WHAP: haplotype-based association analysis
    Shaun Purcell
    Center for Human Genetic Research, MGH, Boston, MA, USA
    Bioinformatics 23:255-6. 2007
  6. pmc Genome-wide detection and characterization of positive selection in human populations
    Pardis C Sabeti
    Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02139, USA
    Nature 449:913-8. 2007
  7. pmc Association analyses of 249,796 individuals reveal 18 new loci associated with body mass index
    Elizabeth K Speliotes
    Metabolism Initiative and Program in Medical and Population Genetics, Broad Institute, Cambridge, Massachusetts, USA
    Nat Genet 42:937-48. 2010
  8. doi request reprint A genomewide association study of response to lithium for prevention of recurrence in bipolar disorder
    Roy H Perlis
    Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
    Am J Psychiatry 166:718-25. 2009
  9. ncbi request reprint Properties of structured association approaches to detecting population stratification
    Shaun Purcell
    Whitehead Institute, Nine Cambridge Center, Cambridge, MA 02129, USA
    Hum Hered 58:93-107. 2004
  10. ncbi request reprint Evaluation of common variants in the six known maturity-onset diabetes of the young (MODY) genes for association with type 2 diabetes
    Wendy Winckler
    Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
    Diabetes 56:685-93. 2007

Detail Information

Publications40

  1. pmc Parental phenotypes in family-based association analysis
    Shaun Purcell
    Whitehead Institute for Biomedical Research, Cambridge, MA, USA
    Am J Hum Genet 76:249-59. 2005
    ..This methodology enables the extraction of more information from existing family-based collections that are currently being genotyped and analyzed by use of standard approaches...
  2. pmc Two independent alleles at 6q23 associated with risk of rheumatoid arthritis
    Robert M Plenge
    Program in Medical and Population Genetics, Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
    Nat Genet 39:1477-82. 2007
    ..We show that these two SNP associations are statistically independent, are each reproducible in the comparison of our data and WTCCC data, and define risk and protective haplotypes for rheumatoid arthritis at 6q23...
  3. ncbi request reprint Genome-wide association analysis identifies loci for type 2 diabetes and triglyceride levels
    Richa Saxena
    Broad Institute of Harvard and Massachusetts Institute of Technology MIT, Cambridge, MA 02142, USA
    Science 316:1331-6. 2007
    ..The discovery of associated variants in unsuspected genes and outside coding regions illustrates the ability of genome-wide association studies to provide potentially important clues to the pathogenesis of common diseases...
  4. pmc Integrated genotype calling and association analysis of SNPs, common copy number polymorphisms and rare CNVs
    Joshua M Korn
    Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
    Nat Genet 40:1253-60. 2008
    ..The Birdsuite software is applied here to data from the Affymetrix SNP 6.0 array. Additionally, we describe a method, implemented in PLINK, to utilize these combined SNP and CNV genotypes for association testing with a phenotype...
  5. ncbi request reprint WHAP: haplotype-based association analysis
    Shaun Purcell
    Center for Human Genetic Research, MGH, Boston, MA, USA
    Bioinformatics 23:255-6. 2007
    ..We illustrate using these tests to dissect a multi-locus association...
  6. pmc Genome-wide detection and characterization of positive selection in human populations
    Pardis C Sabeti
    Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02139, USA
    Nature 449:913-8. 2007
    ....
  7. pmc Association analyses of 249,796 individuals reveal 18 new loci associated with body mass index
    Elizabeth K Speliotes
    Metabolism Initiative and Program in Medical and Population Genetics, Broad Institute, Cambridge, Massachusetts, USA
    Nat Genet 42:937-48. 2010
    ..Furthermore, genes in other newly associated loci may provide new insights into human body weight regulation...
  8. doi request reprint A genomewide association study of response to lithium for prevention of recurrence in bipolar disorder
    Roy H Perlis
    Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
    Am J Psychiatry 166:718-25. 2009
    ....
  9. ncbi request reprint Properties of structured association approaches to detecting population stratification
    Shaun Purcell
    Whitehead Institute, Nine Cambridge Center, Cambridge, MA 02129, USA
    Hum Hered 58:93-107. 2004
    ..To examine the properties of the structured association approach for the detection and correction of population stratification...
  10. ncbi request reprint Evaluation of common variants in the six known maturity-onset diabetes of the young (MODY) genes for association with type 2 diabetes
    Wendy Winckler
    Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
    Diabetes 56:685-93. 2007
    ..We conclude that although rare variants in these six genes explain most cases of MODY, common variants in these same genes contribute very modestly, if at all, to the common form of type 2 diabetes...
  11. ncbi request reprint Environmental mediation and the twin design
    Shaun Purcell
    Psychiatry and Neurodevelopmental Genetics Unit, Center for Human Genetics Research, Massachusetts General Hospital, Boston, MA, USA
    Behav Genet 35:491-8. 2005
    ..Based on a simple simulation study, recommendations are given as to which methods should be applied and which should be avoided...
  12. pmc Replication of putative candidate-gene associations with rheumatoid arthritis in >4,000 samples from North America and Sweden: association of susceptibility with PTPN22, CTLA4, and PADI4
    Robert M Plenge
    Broad Institute of MIT and Harvard, Cambridge, MA, USA
    Am J Hum Genet 77:1044-60. 2005
    ....
  13. ncbi request reprint Contribution of methylenetetrahydrofolate reductase (MTHFR) polymorphisms to negative symptoms in schizophrenia
    Joshua L Roffman
    Schizophrenia Research Program, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
    Biol Psychiatry 63:42-8. 2008
    ..We examined whether the methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C functional polymorphisms contribute to negative symptoms...
  14. ncbi request reprint Association between treatment-emergent suicidal ideation with citalopram and polymorphisms near cyclic adenosine monophosphate response element binding protein in the STAR*D study
    Roy H Perlis
    Massachusetts General Hospital, Boston, MA 02114, USA
    Arch Gen Psychiatry 64:689-97. 2007
    ....
  15. pmc PLINK: a tool set for whole-genome association and population-based linkage analyses
    Shaun Purcell
    Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA 02114, USA
    Am J Hum Genet 81:559-75. 2007
    ..Analysis of the patterns of segmental sharing has the potential to map disease loci that contain multiple rare variants in a population-based linkage analysis...
  16. ncbi request reprint Population differences in the International Multi-Centre ADHD Gene Project
    Benjamin M Neale
    MRC Social Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, UK
    Genet Epidemiol 32:98-107. 2008
    ..Any case-control sample employing an Israeli sample with Northern Europeans must consider stratification. A Northern European tag set, however, appears to be appropriate for capturing the variation across populations...
  17. doi request reprint 50bp deletion in the promoter for superoxide dismutase 1 (SOD1) reduces SOD1 expression in vitro and may correlate with increased age of onset of sporadic amyotrophic lateral sclerosis
    Wendy J Broom
    Day Neuromuscular Research Laboratory, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
    Amyotroph Lateral Scler 9:229-37. 2008
    ..Our findings suggest the hypothesis that this deletion reduces expression of the SOD1 gene and that levels of the SOD1 protein may modify the phenotype of SALS within selected populations...
  18. doi request reprint Association of reading disability on chromosome 6p22 in the Afrikaner population
    Jill V Platko
    Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA
    Am J Med Genet B Neuropsychiatr Genet 147:1278-87. 2008
    ..Of particular interest were markers on chromosomes 1 and 15. These two regions have been implicated in studies of populations that formed the founding population in the Afrikaner population...
  19. doi request reprint Influence of RGS2 on anxiety-related temperament, personality, and brain function
    Jordan W Smoller
    Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    Arch Gen Psychiatry 65:298-308. 2008
    ..The gene encoding regulator of G protein signaling 2 (Rgs2) is a quantitative trait gene that influences mouse anxiety behavior, making its human ortholog (RGS2) a compelling candidate gene for human anxiety phenotypes...
  20. doi request reprint Family-based association study of lithium-related and other candidate genes in bipolar disorder
    Roy H Perlis
    Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, 185 Cambridge St, Boston, MA 02114, USA
    Arch Gen Psychiatry 65:53-61. 2008
    ..Recent developments suggest that a broader pool of genes may be associated with this disorder...
  21. ncbi request reprint Optimal selection strategies for QTL mapping using pooled DNA samples
    Ansar Jawaid
    Department of Psychological Medicine, Institute of Psychiatry, King s College London, London SE5 8AF, UK
    Eur J Hum Genet 10:125-32. 2002
    ..Our results emphasize the importance of minimising experimental errors and suggest a pooling fraction of around 20%...
  22. ncbi request reprint Direct or indirect association in a complex disease: the role of SLC22A4 and SLC22A5 functional variants in Crohn disease
    Sheila A Fisher
    Department of Medical and Molecular Genetics, King s College London School of Medicine, Guy s Hospital, London, United Kingdom
    Hum Mutat 27:778-85. 2006
    ....
  23. pmc Cannabis receptor haplotype associated with fewer cannabis dependence symptoms in adolescents
    Christian J Hopfer
    Department of Psychiatry, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA
    Am J Med Genet B Neuropsychiatr Genet 141:895-901. 2006
    ..Our findings provide evidence suggesting that a common CNR1 haplotype is associated with developing fewer cannabis dependence symptoms among adolescents who have experimented with cannabis...
  24. ncbi request reprint Genome-wide linkage analysis of a composite index of neuroticism and mood-related scales in extreme selected sibships
    Matthew W Nash
    MRC Social, Genetic and Developmental Psychiatry Research Centre, Section of Epidemiology, Institute of Psychiatry, King s College, London, UK
    Hum Mol Genet 13:2173-82. 2004
    ..2) around 64 cM (43-70 cM) near marker D1S2892 and another on chromosome 6p (LOD 2.7) around 47 cM (34-63 cM) near marker D6S1610. Further exploratory sex-specific analyses suggested that these QTLs might have sex-limited effects...
  25. ncbi request reprint Epistasis in quantitative trait locus linkage analysis: interaction or main effect?
    Shaun Purcell
    Social, Genetic, and Developmental Psychiatry Research Centre, Institute of Psychiatry, P O 080, King s College London, Denmark Hill, London SE5 8AF, United Kingdom
    Behav Genet 34:143-52. 2004
    ..Second, because the nonepistatic variance component estimates in submodels can partially absorb epistatic variance when it is not explicitly modeled, power to formally detect epistasis is low...
  26. ncbi request reprint The serotonin transporter gene as a QTL for ADHD
    Sarah Curran
    MRC Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, De Crespigny Park, London, United Kingdom
    Am J Med Genet B Neuropsychiatr Genet 134:42-7. 2005
    ..0054 for the global test and an empirical P value = 0.00081 for the largest local test. Thus, we show here that SLC6A4, which has a major influence on brain serotonin availability, may be a QTL for ADHD...
  27. doi request reprint The positives, protocols, and perils of genome-wide association
    Benjamin M Neale
    Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, King s College London, De Crespigny Park, London, UK
    Am J Med Genet B Neuropsychiatr Genet 147:1288-94. 2008
    ..We conclude with a look toward future developments such as the analysis of copy number variation and integration of expression and epigenetic phenomenon into genome-wide association...
  28. ncbi request reprint Variance components models for gene-environment interaction in quantitative trait locus linkage analysis
    Shaun Purcell
    Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King s College, London, UK
    Twin Res 5:572-6. 2002
    ..As well as elucidating environmental pathways, consideration of G x E in quantitative and molecular studies will potentially direct and enhance gene-mapping efforts...
  29. ncbi request reprint Variance components models for gene-environment interaction in twin analysis
    Shaun Purcell
    Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King s College, London, UK
    Twin Res 5:554-71. 2002
    ..As well as elucidating environmental pathways, consideration of gene-environment interaction in quantitative and molecular studies will potentially direct and enhance gene-mapping efforts...
  30. pmc Powerful regression-based quantitative-trait linkage analysis of general pedigrees
    Pak C Sham
    SGDP Research Centre, Institute of Psychiatry, King s College, Denmark Hill, London SE5 8AF, United Kingdom
    Am J Hum Genet 71:238-53. 2002
    ..In large sibships, the new method is slightly more powerful than variance-components models. The proposed method provides a practical and powerful tool for the linkage analysis of quantitative traits...
  31. ncbi request reprint Family dysfunction interacts with genes in the causation of antisocial symptoms
    Tanya Maria May Button
    Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King s College, London, UK
    Behav Genet 35:115-20. 2005
    ..It was concluded that a risk genotype conferring susceptibility to family dysfunction is responsible for most of the variance in antisocial symptoms in childhood and adolescence...
  32. ncbi request reprint Ascertainment through family history of disease often decreases the power of family-based association studies
    Manuel A R Ferreira
    Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, 185 Cambridge St, Boston, MA 02114, USA
    Behav Genet 37:631-6. 2007
    ..Our analytic approach to estimate the asymptotic power of the TDT is implemented online at http://pngu.mgh.harvard.edu/ ~purcell/gpc/...
  33. pmc A second generation human haplotype map of over 3.1 million SNPs
    Kelly A Frazer
    The Scripps Research Institute, 10550 North Torrey Pines Road MEM275, La Jolla, California 92037, USA
    Nature 449:851-61. 2007
    ..Finally, we demonstrate increased differentiation at non-synonymous, compared to synonymous, SNPs, resulting from systematic differences in the strength or efficacy of natural selection between populations...
  34. ncbi request reprint Common variation in three genes, including a noncoding variant in CFH, strongly influences risk of age-related macular degeneration
    Julian Maller
    Center for Human Genetic Research, Massachusetts General Hospital, 185 Cambridge St, Boston, Massachusetts 02114, USA
    Nat Genet 38:1055-9. 2006
    ..Genotypes at these five common SNPs define a broad spectrum of interindividual disease risk and explain about half of the classical sibling risk of AMD in our study population...
  35. pmc Changing environmental influences on substance use across development
    Danielle M Dick
    Washington University, Department of Psychiatry, St Louis, MO 63110, USA
    Twin Res Hum Genet 10:315-26. 2007
    ..Furthermore, they illustrate the importance of using a developmental perspective to understand how specific influences may vary across different ages, and across different phenotypes...
  36. ncbi request reprint Identification of EFHC2 as a quantitative trait locus for fear recognition in Turner syndrome
    Lauren A Weiss
    Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    Hum Mol Genet 16:107-13. 2007
    ..EFHC2 shows genealogy and extended LD consistent with directional selection. This novel QTL may influence social cognition in the general population and in autism...
  37. ncbi request reprint Clinical and genetic dissection of anger expression and CREB1 polymorphisms in major depressive disorder
    Roy H Perlis
    Depression Clinical and Research Program, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
    Biol Psychiatry 62:536-40. 2007
    ..Therefore, we examined the association between CREB1 polymorphisms and anger expression in MDD...
  38. ncbi request reprint Pretrauma cognitive ability and risk for posttraumatic stress disorder: a twin study
    William S Kremen
    Department of Psychiatry and Center for Behavioral Genomics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
    Arch Gen Psychiatry 64:361-8. 2007
    ..Cognitive deficits are associated with posttraumatic stress disorder (PTSD), but whether such deficits reflect sequelae or risk factors is not fully resolved...
  39. ncbi request reprint Investigation of parent-of-origin effects in ADHD candidate genes
    Jang Woo Kim
    Psychiatric and Neurodevelopmental Genetics Unit, Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA
    Am J Med Genet B Neuropsychiatr Genet 144:776-80. 2007
    ..Thus, we conclude that a substantial parent-of-origin effect is unlikely for these leading ADHD candidate genes...
  40. ncbi request reprint Effects of the methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism on executive function in schizophrenia
    Joshua L Roffman
    Schizophrenia Research Program, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, USA
    Schizophr Res 92:181-8. 2007
    ..This study examined whether schizophrenia patients homozygous for the risk allele (T/T) exhibit greater impairment in executive function, and determined the extent to which MTHFR's effects on negative symptoms underlie this relationship...