A homozygous HOXA11 variation as a potential novel cause of autosomal recessive congenital anomalies of the kidney and urinary tract

Clin Genet. 2020 Oct;98(4):390-395. doi: 10.1111/cge.13813.

Abstract

Congenital anomalies of the kidney and urinary tract (CAKUT) is the leading cause of end-stage kidney disease in children. Until now, more than 50 monogenic causes for CAKUT have been described, all of which only explain 10% to 20% of all patients with CAKUT, suggesting the presence of additional genes that cause CAKUT when mutated. Herein, we report two siblings of a consanguineous family with CAKUT, both of which rapidly progressed to chronic kidney disease in early childhood. Whole-exome sequencing followed by homozygosity mapping identified a homozygous variation in HOXA11. We therefore showed for the first time an association between a homozygous HOXA11 variation with CAKUT in humans, expanding the genetic spectrum of the disease.

Keywords: HOXA11; monogenic CAKUT; vesicoureteral reflux; whole-exome sequencing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Child
  • Child, Preschool
  • Exome Sequencing
  • Female
  • Genes, Recessive / genetics
  • Genetic Predisposition to Disease*
  • Homeodomain Proteins / genetics*
  • Homozygote
  • Humans
  • Kidney / diagnostic imaging
  • Kidney / pathology
  • Male
  • Urinary Tract / diagnostic imaging
  • Urinary Tract / pathology
  • Urogenital Abnormalities / diagnosis
  • Urogenital Abnormalities / genetics*
  • Urogenital Abnormalities / pathology
  • Vesico-Ureteral Reflux / diagnosis
  • Vesico-Ureteral Reflux / genetics*
  • Vesico-Ureteral Reflux / pathology

Substances

  • HOXA11 protein, human
  • Homeodomain Proteins

Supplementary concepts

  • Cakut