Heart failure & cardiomyopathiesCohort study

Return-to-Play for Athletes With Desmosomal Arrhythmogenic Cardiomyopathy

JACC Clin ElectrophysiolPublished

  • retrospective review of electronic medical record
  • single-center

Authors' conclusion

This is the first single-center cohort of patients with ACM being empowered to RTP and remain athletes. These athletes have exhibited higher rates of BCEs and disease conversion/progression than our athletes with a variety of other genetic heart diseases. Further studies are needed to determine how to further guide safe sports participation in genetically mediated ACM.

Study context

Population
Self-identified athletes with genotype-positive ACM evaluated at Mayo Clinic Windland Smith Rice Genetic Heart Rhythm Clinic between July 2000 and February 2025genotype-positive athletes with ACM identified from 1,229 registry patients · PKP2-ACM 61 · DSP-ACM 32
Participants
138 athletes

Main finding

As reported in the abstract

Breakthrough cardiac events (BCE) after diagnosis of ACM

Athletes with at least 1 breakthrough cardiac event (BCE)

34 athletes (25%)

Total BCEs

68 events

Patients with BCEs following physician-approved return-to-play (RTP)

6 patients experienced 14 BCEs

Observational data: associations, not effects.

Further findings

BCE rate · median follow-up of 25 months (IQR: 6-71)

Overall event rate, entire cohort
7.9 BCEs per 100 patient-years (95 % CI: 5.8-10.5)
Event rate after physician-approved RTP
14.6 per 100 patient-years (95% CI: 7.8-24.9)

Context of BCEs during RTP period

One-half of BCEs occurred during sports participation; remainder at rest or unknown context

Original publication

Return-to-Play for Athletes With Desmosomal Arrhythmogenic Cardiomyopathy. JACC Clin Electrophysiol. Published 8 April 2026. doi:10.1016/j.jacep.2026.02.021

Summarised from the published abstract; every number is checked against it