Autoinflammatory & rare systemic diseases

Increased risk for stroke in patients with familial Mediterranean fever: results from a large population-based study

Rheumatology (Oxford)Published Retrospective cohort study

Main finding · StrokeResult — go to the resultCrude hazard ratio 1.42 95% CI 1.15–1.76

Authors' conclusion

FMF patients are at increased risk for stroke regardless of known complications.

Study context

Population
FMF patients diagnosed 2000–2016 and matched controls, Clalit Health Services database, Israel; mean age at start of follow-up 25.7 yearsmedian follow-up 12.5 years
Exposure
FMF vs matched controls from the general population
  • FMFn = 9,769
Outcome
Incidence and risk of stroke
Methodological detailspopulation-based, matched on age, gender and place of residence, univariate and multivariate models adjusting for cardiovascular risk-factors
  • Population-based
  • Matched on age, gender and place of residence
  • Univariate and multivariate models adjusting for cardiovascular risk-factors

Main finding

Stroke

Crude hazard ratio

1.42

95% CI 1.15–1.76

P < 0.001

Events by group

FMFvs Controls
crude HR 1.42 (95% CI 1.15–1.76); P < 0.001

As reported in the abstract

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)P value
Stroke by FMF complications (multivariate analysis)FMF with amyloidosis with related or non-related renal failurevs Controls2.16 (1.38–3.38)P < 0.001
Stroke by FMF complications (multivariate analysis)FMF without these complicationsvs Controls1.32 (1.04–1.67)P < 0.05

Original publication

Increased risk for stroke in patients with familial Mediterranean fever: results from a large population-based study. Rheumatology (Oxford). Published 2 April 2023. doi:10.1093/rheumatology/kead153

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