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Genome-wide association study identifies novel risk loci for apical periodontitis
L E Petty1, R Silva2, L Chaves de Souza3
1Vanderbilt University Medical Center.
Research Square
|February 7, 2023
Summary
This study identifies novel genes and genetic loci associated with apical periodontitis (AP), a common dental infection. Findings highlight host genetic factors influencing AP susceptibility and reveal links to systemic conditions.
Area of Science:
- Genetics
- Oral Health
- Immunology
Background:
- Apical periodontitis (AP) results from root canal infections and causes bone loss.
- Host genetic factors significantly influence AP development and progression.
- Previous studies lacked genome-wide data, limiting understanding of AP mechanisms.
Approach:
- Conducted the first genome-wide association study (GWAS) for AP in 932 adults (cases and controls).
- Utilized Illumina Expanded Multi-Ethnic Genotyping Array for genotyping.
- Performed single-variant, subphenotype, gene expression, polygenic risk score, and phenome-wide association (PheWAS) analyses.
Key Points:
- Identified eight loci with near genome-wide significance for AP.
- Replicated three previously reported gene associations.
- Discovered novel genes and loci contributing to AP susceptibility.
- Revealed sex-specific genetic contributions to AP risk.
- Identified 33 phecodes associated with AP risk score via PheWAS.
- Found significant associations between AP and systemic conditions.
Conclusions:
- This GWAS provides strong evidence for host genetic factors in AP susceptibility.
- Novel genetic insights into AP pathogenesis have been uncovered.
- The study highlights the interplay between genetic predisposition and systemic health in AP development.
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