What does this research mean for the field?

Rheumatoid arthritis increases the risk of interstitial lung disease by 27.2%, and interstitial lung disease is associated with an increased risk of rheumatoid arthritis by 11.1%. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

What question did this study set out to answer?

To investigate the genetic causality between rheumatoid arthritis (RA) and interstitial lung disease (ILD).

February 22, 2026MedicineOpen Access

Causal association between rheumatoid arthritis and interstitial lung disease: A two-sample bidirectional Mendelian randomization study

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Authors

JPJinxiang PengHubei University of Chinese Medicine HCHaozhu Chen JTJade M. TanAustralian Health Practitioner Regulation Agency

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Implication

This two-sample bidirectional Mendelian randomization study discovers genetic links between rheumatoid arthritis and interstitial lung disease, suggesting implications for screening.

Key Points

To investigate the genetic causality between rheumatoid arthritis (RA) and interstitial lung disease (ILD).
Utilized two-sample bidirectional Mendelian randomization (MR) for causal testing.
Analyzed genome-wide association studies for both ILD and RA.
Selected relevant single nucleotide polymorphisms through quality control.
Conducted various MR analyses including inverse variance weighting and MR-Egger regression.
Performed sensitivity analyses to assess heterogeneity and pleiotropy.
RA is associated with an increased risk of ILD (odds ratio = 1.272, P < .001).
ILD is linked to a higher risk of developing RA (odds ratio = 1.111, P = .033).
The findings support a potential genetic relationship between RA and ILD.

Cite This Study

Peng et al. (2026) studied this question.

synapsesocial.com/papers/699a9de0482488d673cd409e https://doi.org/10.1097/md.0000000000047542

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Implication

This two-sample bidirectional Mendelian randomization study discovers genetic links between rheumatoid arthritis and interstitial lung disease, suggesting implications for screening.

Causal association between rheumatoid arthritis and interstitial lung disease: A two-sample bidirectional Mendelian randomization study

Discussion

Member takes

Implication

Key Points

Cite This Study

Causal association between rheumatoid arthritis and interstitial lung disease: A two-sample bidirectional Mendelian randomization study

Discussion

Member takes

Implication

Key Points

Cite This Study

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Also Consider