title: Synopsis of preterm birth genetic association studies: the preterm birth genetics knowledge base (PTBGene).
abstract: OBJECTIVE
  Our goal wasto produce a field synopsis of genetic associations with preterm birth and to set up a publicly available online database summarizing the data.
  
  
  METHODS
  We performed a systematic review and meta-analyses to identify genetic associations with preterm birth. We have set up a publicly available online database of genetic association data on preterm birth called PTBGene (http://ric.einstein.yu.edu/ptbgene/index.html) and report on a structured synopsis thereof as of December 1, 2008.
  
  
  RESULTS
  Data on 189 polymorphisms in 84 genes have been included and 36 meta-analyses have been performed. Five gene variants (4 in maternal DNA, one in newborn DNA) have shown nominally significant associations, but all have weak epidemiological credibility.
  
  
  CONCLUSIONS
  After publishing this field synopsis, the PTBGene database will be regularly updated to keep track of the evolving evidence base of genetic factors in preterm birth with the goal of promoting knowledge sharing and multicenter collaboration among preterm birth research groups.
authors.affiliation: Department of Obstetrics and Gynecology and Women's Health, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY 10461, USA. siobhanmdolan@yahoo.com
authors.forename: S M
authors.initials: SM
authors.lastname: Dolan
authors.forename: M V
authors.initials: MV
authors.lastname: Hollegaard
authors.forename: M
authors.initials: M
authors.lastname: Merialdi
authors.forename: A P
authors.initials: AP
authors.lastname: Betran
authors.forename: T
authors.initials: T
authors.lastname: Allen
authors.forename: C
authors.initials: C
authors.lastname: Abelow
authors.forename: J
authors.initials: J
authors.lastname: Nace
authors.forename: B K
authors.initials: BK
authors.lastname: Lin
authors.forename: M J
authors.initials: MJ
authors.lastname: Khoury
authors.forename: J P A
authors.initials: JP
authors.lastname: Ioannidis
authors.forename: S
authors.initials: S
authors.lastname: Bagade
authors.forename: X
authors.initials: X
authors.lastname: Zheng
authors.forename: R A
authors.initials: RA
authors.lastname: Dubin
authors.forename: L
authors.initials: L
authors.lastname: Bertram
authors.forename: D R
authors.initials: DR
authors.lastname: Velez Edwards
authors.forename: R
authors.initials: R
authors.lastname: Menon
mesh_terms: D005260:Female; D005796:Genes / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D055106:Genome-Wide Association Study; D006801:Humans; D007231:Infant, Newborn; D051188:Knowledge Bases; D015201:Meta-Analysis as Topic; D011110:Polymorphism, Genetic / Q000235:genetics*; D011247:Pregnancy; D047928:Premature Birth / Q000235:genetics*