Evidence map›Paper›PMID 34952598›Full record

ArticleJournal of translational medicine2021

Periodontal disease increases the host susceptibility to COVID-19 and its severity: a Mendelian randomization study.

Yi Wang, Hui Deng, Yihuai Pan, Lijian Jin, Rongdang Hu, Yongyong Lu, Wenhai Deng, Weijian Sun, Chengshui Chen, Xian Shen and 1 more

Open access · goldAbstract read
In one paragraph

Article in Journal of translational medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
6.6field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Whole-brain radiotherapy with simultaneous integrated boost in treatment of patients with brain metastases: a systematic review and meta-analysis.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 2 countries.

Yi Wang *School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Hui Deng *School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Yihuai PanSchool & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Lijian JinFaculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
Rongdang HuSchool & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Yongyong LuDepartment of Urology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
Wenhai DengKey Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Weijian SunDepartment of Gastrointestinal Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
Chengshui ChenDepartment of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
Xian ShenDepartment of Gastrointestinal Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China. 13968888872@163.com.
Xiu-Feng HuangThe Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China. hxfwzmc@163.com.ORCID http://orcid.org/0000-0002-7852-6358
Wenzhou Medical University · CNUniversity of Hong Kong · HK

Funding

National Natural Science Foundation of China 31771390National Natural Science Foundation of China 32070151National Natural Science Foundation of China 81972261Natural Science Foundation of Zhejiang Province LQ20H140002Natural Science Foundation of Zhejiang Province LY18H160050
6 · The paper itself

Abstract

backgroundEmerging evidence shows that periodontal disease (PD) may increase the risk of Coronavirus disease 2019 (COVID-19) complications. Here, we undertook a two-sample Mendelian randomization (MR) study, and investigated for the first time the possible causal impact of PD on host susceptibility to COVID-19 and its severity.

methodsSummary statistics of COVID-19 susceptibility and severity were retrieved from the COVID-19 Host Genetics Initiative and used as outcomes. Single nucleotide polymorphisms associated with PD in Genome-wide association study were included as exposure. Inverse-variance weighted (IVW) method was employed as the main approach to analyze the causal relationships between PD and COVID-19. Three additional methods were adopted, allowing the existence of horizontal pleiotropy, including MR-Egger regression, weighted median and weighted mode methods. Comprehensive sensitivity analyses were also conducted for estimating the robustness of the identified associations.

resultsThe MR estimates showed that PD was significantly associated with significantly higher susceptibility to COVID-19 using IVW (OR = 1.024, P = 0.017, 95% CI 1.004-1.045) and weighted median method (OR = 1.029, P = 0.024, 95% CI 1.003-1.055). Furthermore, it revealed that PD was significantly linked to COVID-19 severity based on the comparison of hospitalization versus population controls (IVW, OR = 1.025, P = 0.039, 95% CI 1.001-1.049; weighted median, OR = 1.030, P = 0.027, 95% CI 1.003-1.058). No such association was observed in the cohort of highly severe cases confirmed versus those not hospitalized due to COVID-19.

conclusionsWe provide evidence on the possible causality of PD accounting for the susceptibility and severity of COVID-19, highlighting the importance of oral/periodontal healthcare for general wellbeing during the pandemic and beyond.

Indexed as

COVID-19Periodontal DiseasesGenome-Wide Association StudyHumansMendelian Randomization AnalysisPolymorphism, Single NucleotideCOVID-19Mendelian randomizationPeriodontal diseaseRisk factor

Identifiers

PMID34952598
PMCPMC8708510
OpenAlexW4226140360

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.