Causal Associations Between Allergic Rhinitis and Asthma

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

239607 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-10-01

Study Completion Date

2024-10-28

Brief Summary

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This study investigates the causal relationship between allergic rhinitis and asthma using a bidirectional two-sample Mendelian randomization approach. Genetic data were derived from UK Biobank for allergic rhinitis and from Finnish biobank for asthma. This analysis aims to clarify the potential causal link between these two conditions.

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Detailed Description

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This observational study utilizes a bidirectional two-sample Mendelian randomization (MR) analysis to examine the causal association between allergic rhinitis and asthma. The genetic data for allergic rhinitis were obtained from the UK Biobank, encompassing 18,934 cases and 64,595 controls, while asthma data were derived from a Finnish biobank, including 20,629 cases and 135,449 controls. The Mendelian randomization analysis was performed using inverse-variance weighting (IVW), Mendelian randomization-Egger (MR-Egger), and weighted median methods to ensure robust causal inference. Additional tests, such as Cochrane's Q test and Mendelian randomization pleiotropy residual sum and outlier (MR-PRESSO), were applied to assess heterogeneity and pleiotropy, enhancing the reliability of the findings. The results are expected to provide insights into the bidirectional causal relationship between allergic rhinitis and asthma, potentially informing future prevention and treatment strategies.

Conditions

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Allergic Rhinitis Asthma

Study Design

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Observational Model Type

OTHER

Study Time Perspective

RETROSPECTIVE

Study Groups

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Allergic Rhinitis Cohort

This cohort consists of individuals with allergic rhinitis and a control group from the UK Biobank database, including 18,934 cases of allergic rhinitis and 64,595 controls. Genetic data were used to explore causal relationships with asthma.

Mendelian Randomization

Intervention Type OTHER

This study utilizes a bidirectional Mendelian randomization approach to analyze genetic data from individuals with allergic rhinitis and asthma. No active intervention is applied; genetic variants serve as instrumental variables to assess causal associations between the conditions.

Asthma Cohort

This cohort includes individuals with asthma and a control group from the Finnish biobank database, consisting of 20,629 cases of asthma and 135,449 controls. Genetic data were analyzed to examine causal associations with allergic rhinitis.

Mendelian Randomization

Intervention Type OTHER

This study utilizes a bidirectional Mendelian randomization approach to analyze genetic data from individuals with allergic rhinitis and asthma. No active intervention is applied; genetic variants serve as instrumental variables to assess causal associations between the conditions.

Interventions

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Mendelian Randomization

This study utilizes a bidirectional Mendelian randomization approach to analyze genetic data from individuals with allergic rhinitis and asthma. No active intervention is applied; genetic variants serve as instrumental variables to assess causal associations between the conditions.

Intervention Type OTHER