Long-Term Evaluation of TAILORED Vs Anatomical Ablation Strategy for Persistent Atrial Fibrillation

Overview

The TAILORED-LT study is conducted as an extension follow-up until 5 years of the initial TAILORED-AF study (NCT04702451), in order to demonstrate the long-term superiority in terms of freedom of atrial fibrillation (AF) of a tailored ablation strategy targeting areas of spatio-temporal dispersed electrograms in combination with pulmonary veins isolation (PVI) over an anatomical ablation strategy targeting PVI alone for the initial ablation procedure of persistent AF.

The TAILORED-AF study demonstrated at one year's follow-up that a tailored ablation strategy guided by Volta Medical AI-software targeting areas of spatio-temporal dispersed electrograms in combination with pulmonary vein isolation (PVI) ablation is more effective to an anatomical ablation strategy targeting PVI alone (current standard of care) for the treatment of persistent atrial fibrillation (AF). VX1 legacy device renamed Volta AF-Xplorer was used in the TAILORED-AF study in the treatment arm. No additional treatments are specifically required in the scope of this ancillary TAILORED-LT study which aims to follow the patients previously treated in the initial TAILORED-AF study over the long-term. However, in the event of repeat procedures during the TAILORED-LT study, the choice of the ablation technique will be left to the investigator's discretion, regardless of the patient's randomization arm in the TAILORED-AF study. The annual follow-up will be performed as in routine clinical practice post AF ablation procedures: visits at 24 months, 36 months, 48 months and 60 months post TAILORED-AF Study index procedure. It is possible that some of these annual visits cannot be completed prospectively due to time already having elapsed between the end of the subject participation in the TAILORED-AF study and the date of enrollment in the extension TAILORED-LT study. In this case, available data (among those expected by the study protocol) will be collected retrospectively. The additional procedures related to this clinical investigation are limited to annual 24-hour Holters and to the administration of Quality Of Life questionnaires (SF-36 and AFEQT) to the patients during follow-up visits.

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