title: Variants in DPF3 and DSCAML1 are associated with sperm morphology.
abstract: OBJECTIVE
  Abnormalities in semen parameters are often associated with reduced fertility in males, and may, in part, be attributed to genetic variation. Aim of this study is to determine if genetic variants that were previously shown to be predictors of family size and birth rate in healthy men are also associated with sperm morphology in men recruited from an infertility laboratory.
  
  
  METHODS
  Genetic associations with sperm morphology phenotypes in 126 ethnically diverse men from Chicago at 41 independent loci, previously shown to be predictors of family size and birth rate in healthy men, were tested.
  
  
  RESULTS
  Two intronic SNPs, rs680730 (in DSCAML1) and rs10129954 (in DPF3), were associated with the percent of normal sperm morphology in Chicago men (P = 0.017 and 0.023, respectively). Furthermore, both loci were associated with increased occurrence of sperm head defects.
  
  
  CONCLUSIONS
  SNPs in two genes, both of which have roles in nervous system development, were associated with poor sperm morphology. These results may be helpful in identification of other novel genes and biological pathways whose proper functioning is crucial for sperm production and male reproductive processes.
authors.affiliation: Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA.
authors.forename: Gülüm
authors.initials: G
authors.lastname: Kosova
authors.forename: James M
authors.initials: JM
authors.lastname: Hotaling
authors.forename: Samuel
authors.initials: S
authors.lastname: Ohlander
authors.forename: Craig
authors.initials: C
authors.lastname: Niederberger
authors.forename: Gail S
authors.initials: GS
authors.lastname: Prins
authors.forename: Carole
authors.initials: C
authors.lastname: Ober
mesh_terms: D053627:Asthenozoospermia / Q000235:genetics; D015815:Cell Adhesion Molecules / Q000235:genetics*; D004268:DNA-Binding Proteins / Q000235:genetics*; D006801:Humans; D007248:Infertility, Male / Q000235:genetics*; D008297:Male; D009845:Oligospermia / Q000235:genetics; D020641:Polymorphism, Single Nucleotide; D013094:Spermatozoa / Q000502:physiology*; D014157:Transcription Factors / Q000235:genetics*
chemical_list: D015815:Cell Adhesion Molecules; D004268:DNA-Binding Proteins; C452161:DPF3 protein, human; C432365:DSCAML1 protein, human; D014157:Transcription Factors