DYRK1A-related intellectual disability: A syndrome associated with congenital anomalies of the kidney and urinary tract

Alexandria T.M. Blackburn, Nasim Bekheirnia, Vanessa C. Uma, Jill A. Rosenfeld, Matthew N. Bainbridge, Yaping Yang, Pengfei Liu, Suneeta Madan-Khetarpal, Mauricio R. Delgado, Louanne Hudgins, Ian Krantz, David Rodriguez-Buritica, Patricia G. Wheeler, Lihadh Al Gazali, Aisha Mohamed Saeed Mohamed Al Shamsi, Natalia Gomez-Ospina, Hsiao Tuan Chao, Ghayda M. Mirzaa, Angela E. Scheuerle, Mary K. KukolichFernando Scaglia, Christine Eng, Michael C. Braun, Dolores J. Lamb, Rachel K. Miller, Mir Reza Bekheirnia

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose Haploinsufficiency of DYRK1A causes a recognizable clinical syndrome. The goal of this paper is to investigate congenital anomalies of the kidney and urinary tract (CAKUT) and genital defects (GD) in patients with DYRK1A mutations. Methods A large database of clinical exome sequencing (ES) was queried for de novo DYRK1A mutations and CAKUT/GD phenotypes were characterized. Xenopus laevis (frog) was chosen as a model organism to assess Dyrk1a’s role in renal development. Results Phenotypic details and mutations of 19 patients were compiled after an initial observation that one patient with a de novo pathogenic mutation in DYRK1A had GD. CAKUT/GD data were available from 15 patients, 11 of whom present with CAKUT/GD. Studies in Xenopus embryos demonstrate that knockdown of Dyrk1a disrupts the development of segments of developing embryonic nephrons, which ultimately give rise to the entire genitourinary (GU) tract. These defects could be rescued by co-injecting wildtype human DYRK1A RNA, but not with truncated DYRK1AR205* RNA. Conclusion Evidence supports routine GU screening of all individuals with de novo DYRK1A pathogenic variants to ensure optimized clinical management. Collectively, the reported clinical data and loss of function studies in Xenopus substantiate a novel role for DYRK1A in GU development.

Original languageEnglish (US)
JournalUnknown Journal
DOIs
StatePublished - Jan 10 2019

Keywords

  • CAKUT
  • DYRK1A
  • exome sequencing
  • intellectual disability
  • Xenopus

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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