Three cases of Japanese acromicric/geleophysic dysplasia with FBN1 mutations: a comparison of clinical and radiological features

J Pediatr Endocrinol Metab. 2017 Jan 1;30(1):117-121. doi: 10.1515/jpem-2016-0258.

Abstract

Acromicric dysplasia (AD) and geleophysic dysplasia (GD) are rare skeletal dysplasias characterized by short stature, acromelia, joint contracture, hepatomegaly, hoarseness and respiratory distress. Compared with GD, AD presents with milder clinical and radiological features. Radiological findings of AD and GD consist of shortened tubular bones of the hands and feet, and deformed capital femoral epiphyses. The genetic cause of AD and some cases of GD was shown to be mutations in the transforming growth factor (TGF) β-binding protein-like domain 5 of the fibrillin 1 gene (FBN1), which is also mutated in Marfan syndrome. In the present study, we report and compare the highly varied clinical and radiological features of three Japanese AD/GD children. Our patients, harboring FBN1 mutations p.Tyr1699Cys, p.Ser1750Arg, and p.Gly1762Ser, shared common clinical symptoms such as severe short stature, acromelia and hepatomegaly. Short tubular bones of hands and deformities of femur heads are common radiological features of our patients.

Publication types

  • Case Reports
  • Comparative Study

MeSH terms

  • Bone Diseases, Developmental / diagnostic imaging
  • Bone Diseases, Developmental / genetics*
  • Bone Diseases, Developmental / pathology
  • Child
  • Child, Preschool
  • Female
  • Fibrillin-1 / genetics*
  • Hepatomegaly / diagnostic imaging
  • Hepatomegaly / genetics*
  • Hepatomegaly / pathology
  • Humans
  • Japan
  • Limb Deformities, Congenital / diagnostic imaging
  • Limb Deformities, Congenital / genetics*
  • Limb Deformities, Congenital / pathology
  • Male
  • Mutation / genetics*
  • Prognosis
  • Radiography / methods

Substances

  • FBN1 protein, human
  • Fibrillin-1

Supplementary concepts

  • Acromicric dysplasia