Cited by 39Genomics and Rare DiseasesCraniofacial Disorders and TreatmentsGenomic variations and chromosomal abnormalities

A SALL4 zinc finger missense mutation predicted to result in increased DNA binding affinity is associated with cranial midline defects and mild features of Okihiro syndrome

Miertus, Jan, Borozdin, Wiktor, Frecer, Vladimir, Tonini, Giorgio, Bertok, Sara, Amoroso, Antonio, Miertus, Stanislav, Kohlhase, Jürgen·2006·Human Genetics

Abstract

Truncating mutations of the gene SALL4 on chromosome 20q13.13-13.2 cause Okihiro and acro-renal-ocular syndromes. Pathogenic missense mutations within the SALL4 or SALL1 genes have not yet been reported, raising the question which phenotypic features would be associated with them. Here we describe the first missense mutation within the SALL4 gene. The mutation results in an exchange of a highly conserved zinc-coordinating Histidine crucial for zinc finger (ZF) structure within a C2H2 double ZF domain to an Arginine. Molecular modeling predicts that this exchange does not result in a loss of zinc ion binding but leads to an increased DNA-binding affinity of the domain. The index patient shows mild features of Okihiro syndrome, but in addition cranial midline defects (pituitary hypoplasia and single central incisor). This finding illustrates that the phenotypic and functional effects of SALL4 missense mutations are difficult to predict, and that other SALL4 missense mutations might lead to phenotypes not overlapping with Okihiro syndrome.

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Crossref · 10.1007/s00439-005-0124-7

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Authors
Miertus, J., Borozdin, W., Frecer, V., Tonini, G., Bertok, S., Amoroso, A., Miertus, S., & Kohlhase, J.
Affiliations
  • University of Freiburg (DE)
  • IRCCS Materno Infantile Burlo Garofolo (IT)
  • University of Trieste (IT)
Corresponding author
Kohlhase, Jürgen
Venue
Human Genetics
Published
2006-01-03
Volume
119
Issue
1-2
Pages
154-161
ISSN
  • 0018-7348 (ISSN-L)
  • 0340-6717
  • 1432-1203
OpenAlex
W1989000599
Cited by
39
References
32
Citations by year
2025: 2 · 2024: 1 · 2023: 4 · 2022: 1 · 2021: 1 · 2020: 2 · 2017: 2 · 2016: 4 · 2015: 4 · 2014: 1 · 2013: 2 · 2012: 2
FWCI
2.07
Type
journal article
Language
en
Open access
closed
Locations
  • Human Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Craniofacial Disorders and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
Keywords
SALL4, missense mutations, zinc finger, DNA binding affinity, pituitary hypoplasia, SALL1, molecular modeling, genotype-phenotype correlation
MeSH terms
Base Sequence, Binding, Competitive, DNA, DNA Mutational Analysis, DNA-Binding Proteins, Duane Retraction Syndrome, Family Health, Female, Humans, Male, Models, Molecular, Pedigree, Transcription Factors, Zinc Fingers, Craniofacial Abnormalities, Mutation, Missense

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