Arrhythmias & electrophysiology

Coexisting atrial fibrillation and cancer: time trends and associations with mortality in a nationwide Dutch study

Eur Heart JPublished Nationwide matched cohort study

Authors' conclusion

Atrial fibrillation and cancer were associated bidirectionally and were increasingly coexisting, but AF risk varied by cancer type. Coexisting AF and cancer were negatively associated with survival.

Study context

Population
Dutch nationwide population with incident atrial fibrillation (AF) or cancer, 2015–19matched cohorts
Participants
320,139 / 320,135 / 472,745 / 472,741
Exposure
Incident AF vs matched controls; incident cancer vs matched controls
  • AFn = 320,139
  • AF controlsn = 320,135reference
  • Cancern = 472,745
  • Cancer controlsn = 472,741reference
Outcome
Prevalence of cancer/AF at baseline, 1-year risk of cancer/AF diagnosis and time trends; association with all-cause mortality
Follow-up
1 year
Methodological detailsmatched control cohorts, time-dependent Cox regression
  • Matched control cohorts
  • Time-dependent Cox regression

Main finding

As reported in the abstract

Prevalence and 1-year risk of cancer (AF cohort) and of AF (cancer cohort)

AF

Cancer prevalence
12.6%
1-year cancer risk
2.5%

AF controls

Cancer prevalence
5.6%
1-year cancer risk
1.8%

Cancer

AF prevalence
7.5%
1-year AF risk
2.8%

Cancer controls

AF prevalence
4.3%
1-year AF risk
1.2%

Cancer prevalence

AF12.6%
AF controls5.6%
Cancer— not stated in the abstract
Cancer controls— not stated in the abstract

1-year cancer risk

AF2.5%
AF controls1.8%
Cancer— not stated in the abstract
Cancer controls— not stated in the abstract

AF prevalence

AF— not stated in the abstract
AF controls— not stated in the abstract
Cancer7.5%
Cancer controls4.3%

1-year AF risk

AF— not stated in the abstract
AF controls— not stated in the abstract
Cancer2.8%
Cancer controls1.2%
Adjusted hazard ratio (95% CI)
AFvs AF controls1-year cancer risk; similar by cancer type
1.52(1.46–1.58)
Cancervs Cancer controls1-year AF risk; higher for oesophagus, lung, stomach, myeloma, lymphoma
2.78(2.69–2.87)
Cancer prevalence in AF cohort increasing
11.9% to 13.2%
AF prevalence in cancer cohort increasing
6.9% to 8.2%

Observational data: associations, not effects.

Further findings

All-cause mortality

aHR (95% CI)
Cancer after incident AFStrength of association varied by cancer type · time-dependent Cox regression7.77 (7.45–8.11)
AF after incident cancerStrength of association varied by cancer type · time-dependent Cox regression2.55 (2.47–2.63)

Original publication

Coexisting atrial fibrillation and cancer: time trends and associations with mortality in a nationwide Dutch study. Eur Heart J. Published 15 April 2024. doi:10.1093/eurheartj/ehae222

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