Epigenetic alterations associated with non-syndromic tooth agenesis
a systematic review
DOI:
https://doi.org/10.35699/2178-1990.2024.48387Keywords:
tooth agenesis, hypodontia, DNA methylation, histone modification, non-coding RNA, epigenetic alterationAbstract
Aim: To assess whether epigenetic alterations are associated with the occurrence of non-syndromic tooth agenesis.
Methods: Computerized searches were conducted in PubMed, Web of Science, Ovid, Embase, and Scopus databases. Grey literature searches (Open Grey), Google Scholar, and manual searches in the reference lists of included articles were also performed. Only case-control studies evaluating individuals with and without non-syndromic tooth agenesis were eligible. Study selection, data extraction, and bias assessment (University of Adelaide tool) were independently conducted by two authors. Due to methodological differences in the included articles, a meta-analysis was not feasible.
Results: This study identified 206 articles in the databases. After removing 128 duplicates and reviewing 78 references, eight articles met the eligibility criteria and were included. The included studies were conducted in China, Turkey, Tunisia, Romania, and the Czech Republic. Publication dates ranged from 2015 to 2023. Studies with the smallest sample assessed five individuals with agenesis and five without agenesis, and the study with the largest sample assessed 625 individuals with agenesis and 1,144 without agenesis. In total, this review analyzed 1,325 individuals with agenesis and 1,867 without agenesis. Of the 33 single nucleotide polymorphisms evaluated, 19 were potentially associated with an increased susceptibility to non-syndromic tooth agenesis, and these were identified in the PAX9, AXIN2, WNT10A, MDM2, MSX1, and BMP2 genes. Twenty-nine new mutations were identified. Overall, the included articles demonstrated a low risk of bias.
Conclusion: There is an association between certain epigenetic alterations and the occurrence of non-syndromic tooth agenesis.
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