Evidence map›Paper›PMID 41990856›Full record

ArticleVirus research2026

Genetically predicted anti‑rubella virus IgG levels and dermatitis risk: A two‑sample Mendelian randomization study.

Zidan Ouyang, Jiajian Lin, Jing Wu, Xiaojun Wang, Haijiao Wang, Li Chen

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Article in Virus research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Zidan OuyangGuangzhou University of Chinese Medicine, Guangzhou 510006, China.
Jiajian LinGuangzhou University of Chinese Medicine, Guangzhou 510006, China.
Jing WuGuangzhou University of Chinese Medicine, Guangzhou 510006, China.
Xiaojun WangThe First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
Haijiao WangThe First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
Li ChenThe First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China. Electronic address: chenli1927@gzucm.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDermatitis is a common inflammatory skin condition with multifactorial origins. Although immune responses following vaccination or natural infection have been linked to dermatological outcomes, the causal significance of virus-specific immune markers remains unclear. This study used Mendelian randomization (MR) to investigate whether genetically predicted virus-specific IgG levels are associated with dermatitis risk.

methodsA two‑sample MR analysis was performed using genome‑wide association study (GWAS) summary statistics for IgG levels against eight common viral antigens from the Milieu Intérieur cohort and dermatitis outcomes (allergic contact dermatitis, atopic dermatitis, and other contact dermatitis) from large European cohorts. The inverse variance weighted method was used as the primary analysis method, complemented by MR‑Egger, weighted median, weighted mode, MR‑PRESSO, and leave‑one‑out sensitivity analyses.

resultsGenetically predicted anti-rubella virus IgG levels showed a suggestive association with a lower risk of allergic contact dermatitis (OR = 0.60, 95% CI: 0.41-0.88, P = 0.009). This association did not survive Bonferroni correction and should be interpreted cautiously as such. No significant associations were observed for other virus-specific IgG levels or dermatitis outcomes. Sensitivity analyses indicated no evidence of horizontal pleiotropy or influence from any single genetic variant.

conclusionThis MR study provides suggestive evidence that genetically predicted anti-rubella IgG levels may be associated with reduced allergic contact dermatitis risk. However, the findings are exploratory, do not distinguish between vaccine-induced and infection-induced immunity, and require replication and mechanistic validation. No causal associations were found for other virus-specific IgG traits.

Indexed as

Antibodies, ViralDermatitisDermatitis, Allergic ContactImmunoglobulin GGenome-Wide Association StudyHumansMendelian Randomization AnalysisAntibodies, ViralImmunoglobulin GAllergic contact dermatitisAtopic dermatitisDermatitisIgGMendelian randomization

Identifiers

PMID41990856
PMCPMC13099477

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