ABSTRACT Objective: To test the hypothesis that mutations in the parathyroid hormone 1 receptor (PTH1R) include effects in both primary and permanent teeth. Materials and Methods: DNA was extracted from saliva samples of 29 patients (8 familial and 21 sporadic) who presented with clinical evidence of infraoccluded teeth, and their unaffected relatives (N ¼ 22). Sequencing followed by mutational analysis of the coding regions of PTH1R gene was completed for all individuals (N ¼ 29). Results: Eight of 29 cases revealed a heterozygous pathogenic variant in the PTH1R gene; five of eight variants represented distinct mutations based on comparison with the dbSNP, HGMD, and ESP databases. One mutation (c.1765 T.C p.Trp89Arg) was found to segregate within a family (n ¼3). In silico analyses for all variants revealed a putative pathogenic effect. A genotype-phenotype correlation was reported as defined by a functional mutation in PTH1R and corresponding effects on one or more posterior teeth only; unilateral or bilateral involvement, infraoccluded primary teeth. Conclusions: Novel mutations were reported in the PTH1R gene that included PFE-affected primary molars, thus providing the basis for using a genetic diagnostic tool for early diagnosis leading to proper management.

Grippaudo, C., Cafiero, C., D'Apolito, I., Ricci, B., Frazier-Bowers, S. A., Primary failure of eruption: Clinical and genetic findings in the mixed dentition, <<ANGLE ORTHODONTIST>>, 2018; 2018 (88): 275-282. [doi:10.2319/062717-430.1] [http://hdl.handle.net/10807/125783]

Primary failure of eruption: Clinical and genetic findings in the mixed dentition

Grippaudo, Cristina;Cafiero, Concetta;D'Apolito, Isabella;Ricci, Beatrice;
2018

Abstract

ABSTRACT Objective: To test the hypothesis that mutations in the parathyroid hormone 1 receptor (PTH1R) include effects in both primary and permanent teeth. Materials and Methods: DNA was extracted from saliva samples of 29 patients (8 familial and 21 sporadic) who presented with clinical evidence of infraoccluded teeth, and their unaffected relatives (N ¼ 22). Sequencing followed by mutational analysis of the coding regions of PTH1R gene was completed for all individuals (N ¼ 29). Results: Eight of 29 cases revealed a heterozygous pathogenic variant in the PTH1R gene; five of eight variants represented distinct mutations based on comparison with the dbSNP, HGMD, and ESP databases. One mutation (c.1765 T.C p.Trp89Arg) was found to segregate within a family (n ¼3). In silico analyses for all variants revealed a putative pathogenic effect. A genotype-phenotype correlation was reported as defined by a functional mutation in PTH1R and corresponding effects on one or more posterior teeth only; unilateral or bilateral involvement, infraoccluded primary teeth. Conclusions: Novel mutations were reported in the PTH1R gene that included PFE-affected primary molars, thus providing the basis for using a genetic diagnostic tool for early diagnosis leading to proper management.
2018
Inglese
Grippaudo, C., Cafiero, C., D'Apolito, I., Ricci, B., Frazier-Bowers, S. A., Primary failure of eruption: Clinical and genetic findings in the mixed dentition, <<ANGLE ORTHODONTIST>>, 2018; 2018 (88): 275-282. [doi:10.2319/062717-430.1] [http://hdl.handle.net/10807/125783]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/125783
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