Biallelic variants in CHST3 cause Spondyloepiphyseal dysplasia with joint dislocations in three Pakistani kindreds.
BMC Musculoskelet Disord
; 23(1): 818, 2022 Aug 30.
Article
in En
| MEDLINE
| ID: mdl-36042462
ABSTRACT
BACKGROUND:
Skeletal dysplasia is a heterogeneous group of disorders. Spondyloepiphyseal dysplasias comprise one subgroup. Deficiency of carbohydrate sulfotransferase 3 has been reported in a small number of patients with recessively inherited spondyloepiphyseal dysplasia with joint dislocation, short stature and scoliosis. We report here molecular and clinical findings of affected individuals in three consanguineous Pakistani families. Affected individuals in all three families had a uniform phenotype including severe short stature, multiple dislocated joints, progressive scoliosis and facial dysmorphism.METHODS:
Clinical evaluation was done for three unrelated families. Radiological survey of bones was completed for patients from two of the families. Whole exome sequencing index patients from each family was performed followed by Sanger sequencing for validation of segregation of identified variants in respective families. In-silico analysis for determining pathogenicity of identified variants and conservation was done.RESULTS:
Whole-exome sequencing revealed biallelic variants c.590 T > C;p.(Leu197Pro), c.603C > A;p.(Tyr201Ter) and c.661C > T;p.(Arg221Cys) in CHST3 (NM_004273.5) in the three families with eight, five and two affected individuals, respectively. Contrary to previous reports, affected individuals in none of the families exhibited a hearing loss.CONCLUSION:
We describe genotypic and phenotypic findings of three unrelated families with spondyloepiphyseal dysplasia. Our study confirms phenotypic variability and adds to the genotypic spectrum of spondyloepiphyseal dysplasia.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Osteochondrodysplasias
/
Scoliosis
/
Sulfotransferases
/
Joint Dislocations
Type of study:
Prognostic_studies
Limits:
Humans
Country/Region as subject:
Asia
Language:
En
Journal:
BMC Musculoskelet Disord
Journal subject:
FISIOLOGIA
/
ORTOPEDIA
Year:
2022
Document type:
Article
Affiliation country:
Pakistán