Rheumatoid arthritis

Urological cancer risk in patients with rheumatoid arthritis compared to matched controls: a nationwide cohort study

Rheumatology (Oxford)Published Retrospective cohort study

Main finding · Kidney cancerResult — go to the resultAdjusted hazard ratio 1.34 95% CI 1.04–1.78

Authors' conclusion

RA patients have a higher risk of kidney cancer than the general population.

Study context

Population
Korean National Health Insurance System database (2010–2020): patients with rheumatoid arthritis (RA) and a 1:5 matched non-RA population
Exposure
RA vs matched non-RA population
Outcome
Newly diagnosed urological cancer (kidney, bladder, prostate, testicular)
Methodological detailsnationwide, 1:5 matched, Cox proportional hazards regression adjusting for potential confounders
  • Nationwide
  • 1:5 matched
  • Cox proportional hazards regression adjusting for potential confounders

Main finding

Kidney cancer

Adjusted hazard ratio

1.34

95% CI 1.04–1.78

RAvs Non-RA
aHR 1.34 (95% CI 1.04–1.78)

As reported in the abstract

Observational data: associations, not effects.

Further findings

OutcomeaHR (95% CI)
Kidney cancer in women (subgroup)1.57 (1.10–2.24)
Bladder cancer1.24 (0.95–1.62)
Prostate cancer1.13 (0.94–1.35)
Testicular cancer2.31 (0.44–12.20)

Urological cancer risk by serological status

No significant difference in urological cancer risk according to serological status

Original publication

Urological cancer risk in patients with rheumatoid arthritis compared to matched controls: a nationwide cohort study. Rheumatology (Oxford). Published 14 February 2025. doi:10.1093/rheumatology/keaf103

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