The Causal Effects Between Autoimmune Thyroid Disease and Urticaria: Evidence from a Mendelian Randomization Study

Overview

Journal Arch Dermatol Res

Specialty Dermatology

Date 2025 Mar 15

PMID 40088276

Authors

Shunmin Mao

Ling Jiang

Chuhan Fu

Li Lei

Jing Chen

Qinghai Zeng

Affiliations

Soon will be listed here.

Abstract

Previous studies have suggested a comorbidity between autoimmune thyroid disease (AITD) and urticaria. However, the causal effects between AITD and urticaria remain unclear. This study employed genome-wide association study (GWAS) data to analyze the associations between AITD and urticaria through bidirectional Mendelian randomization (MR), meanwhile, examined the role of 731 immune traits as mediators between the two diseases through mediation analysis. The IVW results indicated that Graves' disease (GD) and Hashimoto's thyroiditis (HT) have a potential risk effect on urticaria, particularly increasing the risk of other and unspecified urticaria and idiopathic urticaria. Urticaria, mainly other and unspecified urticaria, dermatographic urticaria demonstrated a potential risk effect on HT. The mediation analysis revealed that GD likely increases the risk of other and unspecified urticaria by reducing CD4CD8 Natural Killer T Absolute Counts, and reduces the levels of three types of T cells thereby increasing the risk of idiopathic urticaria. HT increased the risk of idiopathic urticaria through reducing the levels of two types of myeloid Dendritic Cells. The study revealed both GD and HT have causal associations with urticaria, particularly with other and unspecified urticaria and idiopathic urticaria. GD and HT may elevate the risk of spontaneous urticaria by regulating different immune traits.

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