title: The International Endogene Study: a collection of families for genetic research in endometriosis.
abstract: OBJECTIVE
  The aim of the International Endogene Study is to discover genes that influence susceptibility to endometriosis.
  
  
  METHODS
  The study brings together two research groups based in Australia and the United Kingdom that independently have been collecting families for linkage analysis and candidate gene studies. Both groups used similar methods to recruit families, obtain clinical notes, assign disease status based on the operative records and available histology, and collect common clinical data including age at onset of symptoms, age at diagnosis, and symptoms experienced.
  
  
  METHODS
  Recruitment has been mainly from Australia, the United Kingdom, and the United States.
  
  
  METHODS
  All affected participants have surgically confirmed disease.
  
  
  METHODS
  None.
  
  
  METHODS
  Clinical and epidemiological data.
  
  
  RESULTS
  To date, >1,100 families with affected sisters have been recruited, and >1,200 triads (affected women and both parents), for case-control studies.
  
  
  CONCLUSIONS
  We have created the largest resource yet assembled of clinical data and DNA for linkage and association studies in endometriosis. The increase in power to detect susceptibility genes vindicates the decision to merge the two studies and demonstrates the value of large-scale international collaboration.
authors.affiliation: Cooperative Research Centre for Discovery of Genes for Common Human Diseases, Queensland Institute of Medical Research, Brisbane, Australia. suet@qimr.edu.au
authors.forename: Susan
authors.initials: S
authors.lastname: Treloar
authors.forename: Ruth
authors.initials: R
authors.lastname: Hadfield
authors.forename: Grant
authors.initials: G
authors.lastname: Montgomery
authors.forename: Ann
authors.initials: A
authors.lastname: Lambert
authors.forename: Jacki
authors.initials: J
authors.lastname: Wicks
authors.forename: David H
authors.initials: DH
authors.lastname: Barlow
authors.forename: Daniel T
authors.initials: DT
authors.lastname: O'Connor
authors.forename: Stephen
authors.initials: S
authors.lastname: Kennedy
mesh_terms: D001315:Australia; D004247:DNA / Q000032:analysis; D004412:Dysmenorrhea; D004715:Endometriosis / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics* / Q000473:pathology; D005260:Female; D008040:Genetic Linkage; D020022:Genetic Predisposition to Disease; D006801:Humans; D007247:Infertility, Female / Q000209:etiology; D007391:International Cooperation; D017699:Pelvic Pain; D006113:United Kingdom; D014481:United States
chemical_list: D004247:DNA