Abstract:
:Mutation analysis as the gold standard is particularly important in diagnosis of osteogenesis imperfecta (OI) and it may be preventable upon early diagnosis. In this study, we aimed to analyze the clinical and genetic materials of an OI pedigree as well as to confirm the deleterious property of the mutation.A pedigree with OI was identified. All family members received careful clinical examinations and blood was drawn for genetic analyses. Genes implicated in OI were screened for mutation. The function and structure of the mutant protein were predicted using bioinformatics analysis.The proband, a 9-month fetus, showed abnormal sonographic images. Disproportionately short and triangular face with blue sclera was noticed at birth. She can barely walk and suffered multiple fractures till 2-year old. Her mother appeared small stature, frequent fractures, blue sclera, and deformity of extremities. A heterozygous missense mutation c.1009G>T (p.G337C) in the COL1A2 gene was identified in her mother and her. Bioinformatics analysis showed p.G337 was well-conserved among multiple species and the mutation probably changed the structure and damaged the function of collagen.We suggest that the mutation p.G337C in the COL1A2 gene is pathogenic for OI by affecting the protein structure and the function of collagen.
journal_name
Medicine (Baltimore)journal_title
Medicineauthors
Jia M,Shi R,Zhao X,Fu Z,Bai Z,Sun T,Zhao X,Wang W,Xu C,Yan Fdoi
10.1097/MD.0000000000007783subject
Has Abstractpub_date
2017-09-01 00:00:00pages
e7783issue
39eissn
0025-7974issn
1536-5964pii
00005792-201709290-00003journal_volume
96pub_type
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