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neurogenetics

, Volume 16, Issue 4, pp 307–314 | Cite as

Mutations in ARID2 are associated with intellectual disabilities

  • Linshan Shang
  • Megan T. Cho
  • Kyle Retterer
  • Leandra Folk
  • Jennifer Humberson
  • Luis Rohena
  • Alpa Sidhu
  • Sheila Saliganan
  • Alejandro Iglesias
  • Patrik Vitazka
  • Jane Juusola
  • Anne H. O’Donnell-Luria
  • Yufeng Shen
  • Wendy K. ChungEmail author
Original Article

Abstract

The etiology of intellectual disabilities (ID) remains unknown for the majority of patients. Due to reduced reproductive fitness in many individuals with ID, de novo mutations account for a significant portion of severe ID. The ATP-dependent SWI/SNF chromatin modifier has been linked with neurodevelopmental disorders including ID and autism. ARID2 is an intrinsic component of polybromo-associated BAF (PBAF), the SWI/SNF subcomplex. In this study, we used clinical whole exome sequencing (WES) in proband-parent-trios to identify the etiology of ID. We identified four independent, novel, loss of function variants in ARID2 gene in four patients, three of which were confirmed to be de novo. The patients all have ID and share other clinical characteristics including attention deficit hyperactivity disorder, short stature, dysmorphic facial features, and Wormian bones. All four novel variants are predicted to lead to a premature termination with the loss of the two conservative zinc finger motifs. This is the first report of mutations in ARID2 associated with developmental delay and ID.

Keywords

ARID2 Intellectual disabilities Whole exome sequencing De novo mutations SWI/SNF chromatin modifier 

Notes

Acknowledgements

We thank the families for their generous contributions. We thank the data review support from ExAC consortium. This work was supported in part by a grant from the Simons Foundation.

Conflicts of interest

Megan Cho, Kyle Retterer, Leandra Folk, Patrik Vitazka, and Jane Juusola are employees of GeneDx. Wendy Chung is a consultant to BioReference Laboratories. The other authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Linshan Shang
    • 1
  • Megan T. Cho
    • 2
  • Kyle Retterer
    • 2
  • Leandra Folk
    • 2
  • Jennifer Humberson
    • 3
  • Luis Rohena
    • 4
  • Alpa Sidhu
    • 5
  • Sheila Saliganan
    • 5
  • Alejandro Iglesias
    • 1
  • Patrik Vitazka
    • 2
  • Jane Juusola
    • 2
  • Anne H. O’Donnell-Luria
    • 6
    • 7
    • 8
  • Yufeng Shen
    • 9
  • Wendy K. Chung
    • 1
    • 10
    Email author
  1. 1.Department of PediatricsColumbia University Medical CenterNew YorkUSA
  2. 2.GeneDxGaithersburgUSA
  3. 3.Department of Pediatrics, Division of Genetics and MetabolismUniversity of VirginiaCharlottesvilleUSA
  4. 4.Department of Pediatrics, Division of GeneticsSan Antonio Military Medical CenterSan AntonioUSA
  5. 5.Department of Pediatrics and Human DevelopmentMichigan State UniversityEast LansingUSA
  6. 6.Analytical and Translational Genetics UnitMassachusetts General HospitalBostonUSA
  7. 7.Broad Institute of MIT and HarvardCambridgeUSA
  8. 8.Division of Genetics and GenomicsBoston Children’s HospitalBostonUSA
  9. 9.Department of System Biology and Biomedical InformaticsColumbia University Medical CenterNew YorkUSA
  10. 10.Department of MedicineColumbia University Medical CenterNew YorkUSA

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