Candidate gene association study implicates p63 in the etiology of nonsyndromic bladder-exstrophy-epispadias complex

Lihong Qi, Mei Wang, Garima Yagnik, Manuel Mattheisen, John P. Gearhart, Yegappan lakshmanan, Anne Karolin Ebert, Wolfgang Rösch, Michael Ludwig, Markus Draaken, Heiko Reutter, Simeon A. Boyadjiev

Research output: Contribution to journalArticle

Abstract

BACKGROUND: Bladder-exstrophy-epispadias complex (BEEC) is a severe congenital anomaly that represents a spectrum of urological abnormalities where parts or all of the distal urinary tract fail to close during development. Multiple lines of evidence strongly suggested p63 as a plausible candidate gene. We conducted a candidate gene association study to further investigate the role of p63 in human BEEC. METHODS: We conducted a family-based association study of p63 using 154 Caucasian patients with nonsyndromic BEEC and their unaffected parents. High throughput single nucleotide polymorphism (SNP) genotyping was carried out using Illumina's Golden Gate Assay for 109 selected tagging SNPs localized within p63 with a minor allele frequency>0.01. Individual and haplotype SNP transmission disequilibrium tests were conducted using Plink and Haploview, respectively. We also examined parent-of-origin effects using paternal asymmetry tests implemented in FAMHAP (http://famhap.meb.uni-bonn.de/index.html). RESULTS: Nominally significant associations were identified between BEEC and six SNPs (rs17447782, rs1913720, rs6790167, rs9865857, rs1543969, rs4687100), and four haplotype blocks including or near these significant SNPs. Analysis of parent-of-origin effects showed significant results for seven SNPs (rs4118375, rs12696596, rs6779677, rs13091309, rs7642420, rs1913721, and rs1399774). None of these results remained significant after multiple testing correction. CONCLUSION: The altered transmission of p63 variants in nonsyndromic BEEC patients may be suggestive of its involvement in the disease etiology. Further and large multi-institutional collaborative studies are required to elucidate the role of p63 in nonsyndromic BEEC. Birth Defects Research (Part A), 97:759-763, 2013.

Original languageEnglish (US)
Pages (from-to)759-763
Number of pages5
JournalBirth Defects Research Part A - Clinical and Molecular Teratology
Volume97
Issue number12
DOIs
StatePublished - Dec 1 2013

Keywords

  • Association study
  • BEEC
  • Bladder exstrophy
  • Candidate gene
  • Case-parent trio
  • Epispadias
  • p63

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Embryology
  • Developmental Biology

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    Qi, L., Wang, M., Yagnik, G., Mattheisen, M., Gearhart, J. P., lakshmanan, Y., Ebert, A. K., Rösch, W., Ludwig, M., Draaken, M., Reutter, H., & Boyadjiev, S. A. (2013). Candidate gene association study implicates p63 in the etiology of nonsyndromic bladder-exstrophy-epispadias complex. Birth Defects Research Part A - Clinical and Molecular Teratology, 97(12), 759-763. https://doi.org/10.1002/bdra.23161