Oral surgery, oral medicine, oral pathology and oral radiology · 2023
TGFB3 gene mutation associated with mandibular coronoid process hyperplasia: a family investigation.
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Shiying Shen, Weihong Wang, Xiuqiong Tang, Yemei Qian
Аннотация
OBJECTIVE: Coronoid process hyperplasia (CPH) of the mandible can lead to restricted mouth opening and maxillofacial deformities, which have been hypothesized to be closely associated with genetics. This study investigated the relationship between congenital CPH and TGFB3 mutation in a family of patients with CPH.
STUDY DESIGN: A limited mouth opening proband with CPH underwent whole-exome gene sequencing in November 2019, and the results confirmed compound heterozygous mutations in the TGFB3 gene. Subsequently, clinical imaging and genetic testing were performed on 10 other individuals in his family.
RESULTS: A total of 9 people in this family have CPH. Among them, 6 have the same exon compound heterozygous mutation sites of the TGFB3 gene (chr14-76446905 and chr14-76429713), accompanied by homozygous or heterozygous mutations in the 3'untranslated region (3'UTR) of the TGFB3 gene (chr14:76429555). The other 3 individuals have a homozygous mutation in the 3'untranslated region of the TGFB3 gene.
CONCLUSION: The heterogeneous compound mutation of the TGFB3 gene or the homozygous mutation of 3'UTR of the TGFB3 gene may be correlated with CPH. In addition, the specifically related mechanism needs to be confirmed by further genetic animal experiments.
STUDY DESIGN: A limited mouth opening proband with CPH underwent whole-exome gene sequencing in November 2019, and the results confirmed compound heterozygous mutations in the TGFB3 gene. Subsequently, clinical imaging and genetic testing were performed on 10 other individuals in his family.
RESULTS: A total of 9 people in this family have CPH. Among them, 6 have the same exon compound heterozygous mutation sites of the TGFB3 gene (chr14-76446905 and chr14-76429713), accompanied by homozygous or heterozygous mutations in the 3'untranslated region (3'UTR) of the TGFB3 gene (chr14:76429555). The other 3 individuals have a homozygous mutation in the 3'untranslated region of the TGFB3 gene.
CONCLUSION: The heterogeneous compound mutation of the TGFB3 gene or the homozygous mutation of 3'UTR of the TGFB3 gene may be correlated with CPH. In addition, the specifically related mechanism needs to be confirmed by further genetic animal experiments.