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01-03-2019 | Original Article

Candidate gene sequencing reveals mutations causing hypoplastic amelogenesis imperfecta

Authors: Youn Jung Kim, Figen Seymen, Jenny Kang, Mine Koruyucu, Nuray Tuloglu, Sule Bayrak, Elif Bahar Tuna, Zang Hee Lee, Teo Jeon Shin, Hong-Keun Hyun, Young-Jae Kim, Sang-Hoon Lee, Jan Hu, James Simmer, Jung-Wook Kim

Published in: Clinical Oral Investigations | Issue 3/2019

Abstract

Objective

Amelogenesis imperfecta (AI) is a rare hereditary disorder affecting the quality and quantity of the tooth enamel. The purpose of this study was to identify the genetic etiology of hypoplastic AI families based on the candidate gene approach.

Materials and methods

We recruited three Turkish families with hypoplastic AI and performed a candidate gene screening based on the characteristic clinical feature to find the pathogenic genetic etiology.

Results

The candidate gene sequencing of the LAMB3 gene for family 1 revealed a heterozygous nonsense mutation in the last exon [c.3431C > A, p.(Ser1144*)]. FAM20A gene sequencing for families 2 and 3 identified a homozygous deletion [c.34_35delCT, p.(Leu12Alafs*67)] and a homozygous deletion-insertion (c.1109 + 3_1109 + 7delinsTGGTC) mutation, respectively.

Conclusion

The candidate gene approach can be successfully used to identify the genetic etiology of the AI in some cases with characteristic clinical features.

Clinical relevance

Identification of the genetic etiology of the AI will help both the family members and dentist understand the nature of the disorder. Characteristic clinical feature can suggest possible genetic causes.

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Title: Candidate gene sequencing reveals mutations causing hypoplastic amelogenesis imperfecta
Authors: Youn Jung Kim
Figen Seymen
Jenny Kang
Mine Koruyucu
Nuray Tuloglu
Sule Bayrak
Elif Bahar Tuna
Zang Hee Lee
Teo Jeon Shin
Hong-Keun Hyun
Young-Jae Kim
Sang-Hoon Lee
Jan Hu
James Simmer
Jung-Wook Kim
Publication date: 01-03-2019
Publisher: Springer Berlin Heidelberg
Published in: Clinical Oral Investigations / Issue 3/2019
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-018-2577-9

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Candidate gene sequencing reveals mutations causing hypoplastic amelogenesis imperfecta

Abstract

Objective

Materials and methods

Results

Conclusion

Clinical relevance

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Objective

Materials and methods

Results

Conclusion

Clinical relevance

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