IRAF-ABLATION Study: a Multicenter International Retrospective Cohort of Patients With BTK Inhibitors-related AF Treated by Catheter Ablation

Targeted anticancer drugs have completely changed the prognosis of malignancies during the past decades. Patients suffering from malignancies live longer and this allows adverse events of anticancer drugs to emerge, notably cardiovascular adverse events. It is particularly important because of the great morbimortality of major cardiovascular events like myocardial infarction or stroke and because of their frequency in cancer populations. Indeed, cardiovascular death is the second cause of deaths after malignancy itself in this population. Atrial fibrillation (AF) is a non rare cardiovascular adverse events associated with a shorter overall survival in some malignancies localization. The emblematic anticancer drugs promoting AF is ibrutinib belonging to the Bruton tyrosine kinase inhibitors (BTKi), which are indicated in hematological malignancies. Incidence of AF with ibrutinib is estimated to 4.92/100 person-years; 95% CI: 2.91-4.81 but is underestimated because of the absence of systematic electrocardiogram recording. The management of AF rests on anticoagulation if indicated by the CHA2DS2-VASc score, and on the choice between a rate or rhythm control strategy. Rate control is the privileged strategy because of the risk of drugs interactions of the anti-arrhythmic drugs in a context of anticancer drugs co-prescriptions. But in case of symptoms with normal heart rate, life expectancy counted in years and preserved condition, catheter ablation has to be discussed. Whereas this interventional procedure has been greatly studied in the general population, no study exists in patients with hematological malignancies. The investigators aim to describe baseline characteristics of a population of BTKi-induced AF undergone AF catheter ablation.