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Related Experiment Video

Updated: May 15, 2025

Robust Ligature-Induced Model of Murine Periodontitis for the Evaluation of Oral Neutrophils
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Association between clonal hematopoiesis and periodontitis: a two-sample mendelian randomization study.

Feng Qiu1, Wei Shao1, Xue Qin1

  • 1Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu, China.

Scientific Reports
|April 9, 2025
PubMed
Summary

Clonal hematopoiesis with DNMT3A mutations may protect against periodontitis. This study used Mendelian randomization to investigate the causal link between clonal hematopoiesis (CH) and periodontitis, finding a protective association for a specific CH type.

Keywords:
Clonal HematopoiesisInflammationMendelian randomization analysisPeriodontitis

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Area of Science:

  • Hematology
  • Genetics
  • Periodontology

Background:

  • Clonal hematopoiesis (CH) involves blood cell proliferation with somatic mutations and is age-associated.
  • A potential link between CH and periodontitis exists, but causality is unconfirmed.

Purpose of the Study:

  • To investigate the causal relationship between CH phenotypes and periodontitis using Mendelian randomization.
  • To determine if specific CH mutations (DNMT3A, TET2) or clone sizes influence periodontitis risk.

Main Methods:

  • A two-sample Mendelian randomization (MR) analysis was conducted.
  • Genetic instruments from GWAS were used with the inverse-variance weighted (IVW) method.
  • Sensitivity analyses and reverse MR were performed to ensure result validity.

Main Results:

  • CH with a DNMT3A mutation (CH-DNMT3A) showed a significant protective association with periodontitis (OR: 0.084, P=0.047).
  • No significant associations were observed for other CH phenotypes (overall CH, CH-TET2, large/small clones).
  • Reverse MR analyses did not indicate a bidirectional relationship between periodontitis and CH phenotypes.

Conclusions:

  • DNMT3A-mutated CH appears to have a protective role against periodontitis.
  • Further research is needed to elucidate the underlying biological mechanisms.
  • The study provides novel insights into the complex interplay between hematological aging and oral health.