Exonic deletions in AUTS2 cause a syndromic form of intellectual disability and suggest a critical role for the C terminus

Gea Beunders, Els Voorhoeve, Christelle Golzio, Luba M. Pardo, Jill A. Rosenfeld, Michael E. Talkowski, Ingrid Simonic, Anath C. Lionel, Sarah Vergult, Robert E. Pyatt, Jiddeke Van De Kamp, Aggie Nieuwint, Marjan M. Weiss, Patrizia Rizzu, Lucilla E.N.I. Verwer, Rosalina M.L. Van Spaendonk, Yiping Shen, Bai Lin Wu, Tingting Yu, Yongguo YuColby Chiang, James F. Gusella, Amelia M. Lindgren, Cynthia C. Morton, Ellen Van Binsbergen, Saskia Bulk, Els Van Rossem, Olivier Vanakker, Ruth Armstrong, Soo Mi Park, Lynn Greenhalgh, Una Maye, Nicholas J. Neill, Kristin M. Abbott, Susan Sell, Roger Ladda, Darren M. Farber, Patricia I. Bader, Tom Cushing, Joanne M. Drautz, Laura Konczal, Patricia Nash, Emily De Los Reyes, Melissa T. Carter, Elizabeth Hopkins, Christian R. Marshall, Lucy R. Osborne, Karen W. Gripp, Devon Lamb Thrush, Sayaka Hashimoto, Julie M. Gastier-Foster, Caroline Astbury, Bauke Ylstra, Hanne Meijers-Heijboer, Danielle Posthuma, Björn Menten, Geert Mortier, Stephen W. Scherer, Evan E. Eichler, Santhosh Girirajan, Elias Nicholas Katsanis, Alexander J. Groffen, Erik A. Sistermans*

*Corresponding author for this work

Research output: Contribution to journalArticle

73 Scopus citations

Abstract

Genomic rearrangements involving AUTS2 (7q11.22) are associated with autism and intellectual disability (ID), although evidence for causality is limited. By combining the results of diagnostic testing of 49,684 individuals, we identified 24 microdeletions that affect at least one exon of AUTS2, as well as one translocation and one inversion each with a breakpoint within the AUTS2 locus. Comparison of 17 well-characterized individuals enabled identification of a variable syndromic phenotype including ID, autism, short stature, microcephaly, cerebral palsy, and facial dysmorphisms. The dysmorphic features were more pronounced in persons with 3′ AUTS2 deletions. This part of the gene is shown to encode a C-terminal isoform (with an alternative transcription start site) expressed in the human brain. Consistent with our genetic data, suppression of auts2 in zebrafish embryos caused microcephaly that could be rescued by either the full-length or the C-terminal isoform of AUTS2. Our observations demonstrate a causal role of AUTS2 in neurocognitive disorders, establish a hitherto unappreciated syndromic phenotype at this locus, and show how transcriptional complexity can underpin human pathology. The zebrafish model provides a valuable tool for investigating the etiology of AUTS2 syndrome and facilitating gene-function analysis in the future.

Original languageEnglish (US)
Pages (from-to)210-220
Number of pages11
JournalAmerican journal of human genetics
Volume92
Issue number2
DOIs
StatePublished - Feb 7 2013

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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    Beunders, G., Voorhoeve, E., Golzio, C., Pardo, L. M., Rosenfeld, J. A., Talkowski, M. E., Simonic, I., Lionel, A. C., Vergult, S., Pyatt, R. E., Van De Kamp, J., Nieuwint, A., Weiss, M. M., Rizzu, P., Verwer, L. E. N. I., Van Spaendonk, R. M. L., Shen, Y., Wu, B. L., Yu, T., ... Sistermans, E. A. (2013). Exonic deletions in AUTS2 cause a syndromic form of intellectual disability and suggest a critical role for the C terminus. American journal of human genetics, 92(2), 210-220. https://doi.org/10.1016/j.ajhg.2012.12.011