Research Article

Whole-exome sequencing reveals a novel COL2A1 mutation in a patient with spondylo­epiphyseal dysplasia congenita

Published: March 11, 2016
Genet. Mol. Res. 15(1): gmr7624 DOI: https://doi.org/10.4238/gmr.15017624
Cite this Article:
A. Sangsin, C. Srichomthong, M. Pongpanich, K. Suphapeetiporn, V. Shotelersuk, A. Sangsin, C. Srichomthong, M. Pongpanich, K. Suphapeetiporn, V. Shotelersuk (2016). Whole-exome sequencing reveals a novel COL2A1 mutation in a patient with spondylo­epiphyseal dysplasia congenita. Genet. Mol. Res. 15(1): gmr7624. https://doi.org/10.4238/gmr.15017624
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Abstract

Skeletal dysplasia is a group of disorders with more than 450 entities, many of which cannot be differentiated, especially during infancy, but could lead to different clinical courses and prognoses. In this study, we have described a case of a Thai infant with short stature, flat face, pectus carinatum, indirect inguinal hernia, platyspondyly, and generalized delayed endochondral ossification. Using whole-exome sequencing (WES), we successfully identified a de novo heterozygous mutation, c.2024G>A (p.G675D), in the COL2A1 gene, which, to our knowledge, has not been previously reported. These molecular findings helped provide a definite diagnosis of spondyloepiphyseal dysplasia congenita, aiding in proper management of the disease and improved genetic counseling. We demonstrated that WES is an efficient and cost-effective tool for molecular diagnosis for a type II collagenopathy.

Skeletal dysplasia is a group of disorders with more than 450 entities, many of which cannot be differentiated, especially during infancy, but could lead to different clinical courses and prognoses. In this study, we have described a case of a Thai infant with short stature, flat face, pectus carinatum, indirect inguinal hernia, platyspondyly, and generalized delayed endochondral ossification. Using whole-exome sequencing (WES), we successfully identified a de novo heterozygous mutation, c.2024G>A (p.G675D), in the COL2A1 gene, which, to our knowledge, has not been previously reported. These molecular findings helped provide a definite diagnosis of spondyloepiphyseal dysplasia congenita, aiding in proper management of the disease and improved genetic counseling. We demonstrated that WES is an efficient and cost-effective tool for molecular diagnosis for a type II collagenopathy.