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Updated: Oct 4, 2026

Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
08:03

Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model

Published on: November 4, 2025

[The molecular genetic background of hereditary craniosynostoses and chondrodysplasias]

J M Hertz1, I Juncker, L Christensen

  • 1Arhus Universitetshospital, Arhus Kommunehospital, klinisk genetisk afdeling og neurokirurgisk afdeling GS. hertz@aaa.dk

Ugeskrift for Laeger
|September 27, 2001
PubMed

Insights

Mutations in fibroblast growth factor receptor (FGFR) genes, specifically FGFR1, FGFR2, and FGFR3, cause congenital craniofacial and skeletal disorders. These genetic changes lead to conditions like craniosynostosis and chondrodysplasias.

Area of Science:

  • Genetics
  • Developmental Biology
  • Molecular Biology

Background:

  • Fibroblast growth factors (FGFs) are proteins crucial for cell growth, differentiation, and development.
  • FGFs signal through fibroblast growth factor receptors (FGFRs), which are transmembrane tyrosine kinases.
  • Four genes encode FGFRs; mutations in FGFR1, FGFR2, and FGFR3 are linked to congenital disorders.

Purpose of the Study:

  • To outline the genetic basis of congenital craniofacial and skeletal disorders.
  • To detail the specific FGFR genes involved in various syndromes.
  • To highlight the relationship between FGFR mutations and developmental abnormalities.

Main Methods:

  • Review of genetic mutations in FGFR1, FGFR2, and FGFR3.
  • Analysis of genotype-phenotype correlations in craniofacial and skeletal disorders.
  • Identification of genes responsible for craniosynostosis and chondrodysplasias.

Main Results:

  • Mutations in FGFR1, FGFR2, or FGFR3 cause multiple craniosynostosis syndromes (e.g., Apert, Crouzon, Pfeiffer).
  • Saethre-Chotzen syndrome can result from mutations in FGFR1, FGFR2, FGFR3, or the related ACS gene.
  • Mutations exclusively in FGFR3 are responsible for chondrodysplasias like achondroplasia and thanatophoric dysplasia.

Conclusions:

  • FGFR gene mutations are a significant cause of diverse congenital craniofacial and skeletal developmental disorders.
  • The specific FGFR gene mutated and the mutation itself can influence the resulting syndrome, with some overlap.
  • Understanding these genetic links is vital for diagnosing and potentially treating these conditions.

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