POGZ truncating alleles cause syndromic intellectual disability

Janson White, Christine R. Beck, Tamar Harel, Jennifer E. Posey, Shalini N. Jhangiani, Sha Tang, Kelly D. Farwell, Zöe Powis, Nancy J. Mendelsohn, Janice A. Baker, Lynda Pollack, Kati J. Mason, Klaas J. Wierenga, Daniel K. Arrington, Melissa Hall, Apostolos Psychogios, Laura Fairbrother, Magdalena Walkiewicz, Richard E. Person, Zhiyv NiuJing Zhang, Jill A. Rosenfeld, Donna M. Muzny, Christine Eng, Arthur L. Beaudet, James R. Lupski, Eric Boerwinkle, Richard A. Gibbs, Yaping Yang, Fan Xia, V. Reid Sutton

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Background: Large-scale cohort-based whole exome sequencing of individuals with neurodevelopmental disorders (NDDs) has identified numerous novel candidate disease genes; however, detailed phenotypic information is often lacking in such studies. De novo mutations in pogo transposable element with zinc finger domain (POGZ) have been identified in six independent and diverse cohorts of individuals with NDDs ranging from autism spectrum disorder to developmental delay. Methods: Whole exome sequencing was performed on five unrelated individuals. Sanger sequencing was used to validate variants and segregate mutations with the phenotype in available family members. Results: We identified heterozygous truncating mutations in POGZ in five unrelated individuals, which were confirmed to be de novo or not present in available parental samples. Careful review of the phenotypes revealed shared features that included developmental delay, intellectual disability, hypotonia, behavioral abnormalities, and similar facial characteristics. Variable features included short stature, microcephaly, strabismus and hearing loss. Conclusions: While POGZ has been associated with neurodevelopmental disorders in large cohort studies, our data suggest that loss of function variants in POGZ lead to an identifiable syndrome of NDD with specific phenotypic traits. This study exemplifies the era of human reverse clinical genomics ushered in by large disease-directed cohort studies; first defining a new syndrome molecularly and, only subsequently, phenotypically.

Original languageEnglish (US)
Article number3
JournalGenome medicine
Volume8
Issue number1
DOIs
StatePublished - Jan 6 2016

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Genetics
  • Genetics(clinical)

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  • Cite this

    White, J., Beck, C. R., Harel, T., Posey, J. E., Jhangiani, S. N., Tang, S., Farwell, K. D., Powis, Z., Mendelsohn, N. J., Baker, J. A., Pollack, L., Mason, K. J., Wierenga, K. J., Arrington, D. K., Hall, M., Psychogios, A., Fairbrother, L., Walkiewicz, M., Person, R. E., ... Sutton, V. R. (2016). POGZ truncating alleles cause syndromic intellectual disability. Genome medicine, 8(1), [3]. https://doi.org/10.1186/s13073-015-0253-0