Atrial Fibrillation in Active Cancer Patients

Inclusion Criteria: * adult patients * outpatients or hospitalized patients * with a confirmed cancer (other than basal-cell or squamous-cell carcinoma of the skin, primary brain tumor, known intracerebral metastases, or acute leukemia) and an active cancer (defined as cancer that had been diagnosed within the past 6 months or recurrent locally advanced or metastatic cancer, for which anticancer treatment was being given at the time of enrollment or during 6 months before enrollment) * at least 1 episode of atrial fibrillation (new onset AF occuring after cancer diagnosis or history of paroxysmal of persistant AF prior to cancer diagnosis and an AF recurrence after cancer diagnosis) * in sinus rhythm at the time of cancer diagnosis Exclusion Criteria: * patient with palliative cares or other conditions resulting in short term death (death expected in the month following atrial fibrillation occurrence) * history of long-standing persistant or permanent AF prior to cancer diagnosis