Cited by 21Craniofacial Disorders and TreatmentsGenomics and Rare DiseasesFetal and Pediatric Neurological Disorders

Lin‐Gettig syndrome: Craniosynostosis expands the spectrum of the KAT6B related disorders

Bashir, Rani A., Dixit, Abhijit, Goedhart, Caitlin, Parboosingh, Jillian S., Innes, Allan M., Care for Rare Canada Consortium, Ferreira, Patrick, Hasan, Shabih U. +1 more·2017·American Journal of Medical Genetics Part A

Abstract

We report two patients with sagittal craniosynostosis, hypoplastic male genitalia, agenesis of the corpus callosum, thyroid abnormalities, and dysmorphic features which include short palpebral fissures and retrognathia. The clinical presentation of both patients was initially thought to be suggestive of Lin‐Gettig syndrome (LGS), a multiple malformation syndrome associated with craniosynostosis that was initially reported in two brothers in 1990, with a third patient reported in 2003. Our first patient was subsequently found through exome sequencing to have a de novo mutation in KAT6B, c.4572dupT, p.(Thr1525Tyrfs*16). The second patient was ascertained as possible LGS, but KAT6B mutation testing was pursued clinically after the identification of the KAT6B mutation in Patient 1, and identified a de novo mutation, c.4205_4206delCT, p.(Ser1402Cysfs*5). The phenotypic spectrum of KAT6B mutations has been expanding since identification of KAT6B mutations in genitopatellar syndrome (GPS) and Say Barber Biesecker Young Simpson (SBBYS) syndrome patients. We show that craniosynostosis, which has not been previously reported in association with KAT6B mutations, may be part of the genitopatellar/Say Barber Biesecker Young Simpson spectrum. These two patients also further demonstrate the overlapping phenotypes of genitopatellar and SBBYS syndromes recently observed by others. Furthermore, we propose that it is possible that one or more of the previous cases of LGS may have also been due to mutation in KAT6B, and that LGS may actually be a variant within the KAT6B spectrum and not a distinct clinical entity.

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Crossref · 10.1002/ajmg.a.38355

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  • Variants in genes such as FGFR2, TCF12, ERF, KAT6B, ACTB, SH3PXD2B, SALL1, IFT140, SON, CASK, FOXP2, EXTL3, and SOX6 have often been identified in patients with additional dysmorphic, skeletal, neurodevelopmental, or systemic disorders.

    “More broadly, variants in genes such as FGFR2, TCF12, ERF, KAT6B, ACTB, SH3PXD2B, SALL1, IFT140, SON, CASK, FOXP2, EXTL3, and SOX6 have often been identified in patients with additional dysmorphic, skeletal, neurodevelopmental, or systemic disorders [41, 47–49, 78, 84, 86, 90, 100, 101, 108–110].”

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Authors
Bashir, R. A., Dixit, A., Goedhart, C., Parboosingh, J. S., Innes, A. M., Care for Rare Canada Consortium, Ferreira, P., Hasan, S. U., & Au, P. B.
Affiliations
  • University of Calgary (CA)
  • Nottingham University Hospitals NHS Trust (GB)
Corresponding author
Au, Ping‐Yee B.
Venue
American Journal of Medical Genetics Part A
Publisher
Wiley
Published
2017-07-11
Volume
173
Issue
10
Pages
2596-2604
ISSN
  • 1552-4825 (ISSN-L)
  • 1552-4833
OpenAlex
W2736006237
Cited by
21
References
26
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 4 · 2019: 1 · 2018: 4 · 2017: 2
FWCI
2.00
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Medical Genetics Part A (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Genome Canada
  • Canadian Institutes of Health Research
  • Ontario Genomics Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Craniofacial Disorders and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
Keywords
KAT6B, craniosynostosis, sagittal craniosynostosis, agenesis of the corpus callosum, de novo mutations, phenotypic spectrum, thyroid abnormalities, dysmorphic features, genotype-phenotype correlation
MeSH terms
Adult, Craniosynostoses, Humans, Infant, Infant, Newborn, Male, Mutation, Phenotype, Syndrome, Histone Acetyltransferases

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