title: Whole-exome sequencing reveals a novel COL2A1 mutation in a patient with spondylo-epiphyseal dysplasia congenita.
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.
authors.affiliation: Department of Orthopedics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.|Interdepartment Program of Biomedical Sciences, Faculty of Graduate School, Chulalongkorn University, Bangkok, Thailand.|Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.|Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand.
authors.forename: A
authors.initials: A
authors.lastname: Sangsin
authors.affiliation: Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.|Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand.
authors.forename: C
authors.initials: C
authors.lastname: Srichomthong
authors.affiliation: Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.|Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, Thailand.
authors.forename: M
authors.initials: M
authors.lastname: Pongpanich
authors.affiliation: Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.|Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand.
authors.forename: K
authors.initials: K
authors.lastname: Suphapeetiporn
authors.affiliation: Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.|Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand.
authors.forename: V
authors.initials: V
authors.lastname: Shotelersuk
mesh_terms: D044466:Asian People / Q000235:genetics; D024043:Collagen Type II / Q000235:genetics*; D059472:Exome; D006801:Humans; D007223:Infant; D008297:Male; D009154:Mutation; D010009:Osteochondrodysplasias / Q000151:congenital* / Q000175:diagnosis / Q000235:genetics; D010375:Pedigree; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA
chemical_list: C499177:COL2A1 protein, human; D024043:Collagen Type II