Identification of novel homozygous nonsense SLC10A7 variant causing short stature, amelogenesis imperfecta, and skeletal dysplasia with scoliosis and surgical management of spine

Orphanet J Rare Dis. 2023 Nov 30;18(1):371. doi: 10.1186/s13023-023-02975-0.

Abstract

Background: Short stature, amelogenesis imperfecta, and skeletal dysplasia with scoliosis is a rare, autosomal recessive, skeletal disorder first described in 2018. This syndrome starts with pre- and postnatal developmental delay, and gradually presents with variable facial dysmorphisms, a short stature, amelogenesis imperfecta, and progressive skeletal dysplasia affecting the limbs, joints, hands, feet, and spine.

Case presentation: We identified a homozygous novel nonsense mutation in exon 1 of SLC10A7 (NM_001300842.2: c.100G > T / p.Gly34*) segregating with the typical disease phenotype in a Han Chinese family. We reviewed the 12-year surgical treatment history with seven interventions on spine.

Conclusion: To date, only 12 cases of the SLC10A7 mutation have been reported, mainly from consanguineous families. Our patient showed a relatively severe and broad clinical phenotype compared with previously reported cases. In this patient, annual check-ups and timely surgeries led to a good outcome.

Keywords: Amelogenesis imperfecta; Next generation sequencing (NGS); Rare disease; Skeletal dysplasia; Surgical prognosis.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Amelogenesis Imperfecta* / genetics
  • Amelogenesis Imperfecta* / surgery
  • Dwarfism* / genetics
  • Dwarfism* / surgery
  • Homozygote
  • Humans
  • Mutation / genetics
  • Osteochondrodysplasias* / genetics
  • Osteochondrodysplasias* / surgery
  • Pedigree
  • Scoliosis* / genetics
  • Scoliosis* / surgery

Substances

  • Slc10a7 protein, human