Comprehensive analysis of LAMC1 genetic variants in advanced pelvic organ prolapse

Am J Obstet Gynecol. 2012 May;206(5):447.e1-6. doi: 10.1016/j.ajog.2012.01.033. Epub 2012 Jan 31.

Abstract

Objective: We sought to comprehensively evaluate the association of laminin gamma-1 (LAMC1) and advance pelvic organ prolapse.

Study design: We conducted a candidate gene association of patients (n = 239) with stages III-IV prolapse and controls (n = 197) with stages 0-I prolapse. We used a linkage disequilibrium (LD)-tagged approach to identify single-nucleotide polymorphisms (SNPs) in LAMC1 and focused on non-Hispanic white women to minimize population stratification. Additive and dominant multivariable logistic regression models were used to test for association between individual SNPs and advanced prolapse.

Results: Fourteen SNPs representing 99% coverage of LAMC1 were genotyped. There was no association between SNP rs10911193 and advanced prolapse (P = .34). However, there was a trend toward significance for SNPs rs1413390 (P = .11), rs20563 (P = .11), and rs20558 (P = .12).

Conclusion: Although we found that the previously reported LAMC1 SNP rs10911193 was not associated with nonfamilial prolapse, our results support further investigation of this candidate gene in the pathophysiology of prolapse.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Aged
  • Case-Control Studies
  • Female
  • Genetic Markers
  • Genotyping Techniques
  • Humans
  • Laminin / genetics*
  • Linkage Disequilibrium
  • Logistic Models
  • Middle Aged
  • Multivariate Analysis
  • Pelvic Organ Prolapse / ethnology
  • Pelvic Organ Prolapse / genetics*
  • Pelvic Organ Prolapse / pathology
  • Polymorphism, Single Nucleotide*
  • Severity of Illness Index
  • White People

Substances

  • Genetic Markers
  • Laminin
  • laminin gamma 1