What does this research mean for the field?

There is no direct genetic causal association between rheumatoid arthritis-associated interstitial lung disease and lung cancer, suggesting the observed clinical risk is likely due to shared environmental factors or chronic immune dysregulation rather than inherent genetic pleiotropy. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine whether a direct genetic causal relationship exists between rheumatoid arthritis-associated interstitial lung disease and lung cancer.

August 22, 2026Modern Rheumatology

Association between rheumatoid arthritis-interstitial lung disease and lung cancer: a two -sample Mendelian randomization study with East Asian genetic instruments

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Authors

CHChueh-Hsuan HsuChina Medical University SCShuo‐Chueh ChenChina Medical University YYYung‐Luen YuAsia University

Discussion

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Implication

Mendelian randomization reveals no causal link between rheumatoid arthritis-associated lung disease and lung cancer in East Asian data, suggesting shared environmental drivers like smoking.

Key Points

To determine whether a direct genetic causal relationship exists between rheumatoid arthritis-associated interstitial lung disease and lung cancer.
Conducted a two-sample Mendelian randomization using genetic instruments from an East Asian GWAS (358 RA-ILD cases, 4,550 RA controls) and outcome data from a cross-ancestry lung cancer GWAS meta-analysis (20,378 cases, 18,696 controls).
Evaluated causal effects using 10 single nucleotide polymorphisms via inverse-variance weighted, MR-Egger, and weighted median methods alongside pleiotropy sensitivity tests.
Inverse-variance weighted analysis revealed no significant causal effect of genetically predicted RA-ILD on lung cancer (OR = 1.00; 95% CI: 0.99–1.01; p = 0.78).
Sensitivity analyses detected no significant horizontal pleiotropy or heterogeneity across the genetic instruments.

Cite This Study

Hsu et al. (2026) studied this question.

synapsesocial.com/papers/6a895facca7ade938187e722 https://doi.org/10.1093/mr/roag068

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August 22, 2026Modern Rheumatology

Association between rheumatoid arthritis-interstitial lung disease and lung cancer: a two -sample Mendelian randomization study with East Asian genetic instruments

View Full Paper

Ask AI

Bookmark

Authors

CHChueh-Hsuan HsuChina Medical University SCShuo‐Chueh ChenChina Medical University YYYung‐Luen YuAsia University

Discussion

Member takes

Implication

Mendelian randomization reveals no causal link between rheumatoid arthritis-associated lung disease and lung cancer in East Asian data, suggesting shared environmental drivers like smoking.

Key Points

To determine whether a direct genetic causal relationship exists between rheumatoid arthritis-associated interstitial lung disease and lung cancer.
Conducted a two-sample Mendelian randomization using genetic instruments from an East Asian GWAS (358 RA-ILD cases, 4,550 RA controls) and outcome data from a cross-ancestry lung cancer GWAS meta-analysis (20,378 cases, 18,696 controls).
Evaluated causal effects using 10 single nucleotide polymorphisms via inverse-variance weighted, MR-Egger, and weighted median methods alongside pleiotropy sensitivity tests.
Inverse-variance weighted analysis revealed no significant causal effect of genetically predicted RA-ILD on lung cancer (OR = 1.00; 95% CI: 0.99–1.01; p = 0.78).
Sensitivity analyses detected no significant horizontal pleiotropy or heterogeneity across the genetic instruments.

Cite This Study

Hsu et al. (2026) studied this question.

synapsesocial.com/papers/6a895facca7ade938187e722 https://doi.org/10.1093/mr/roag068

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