Three major studies evaluate endoscopic ablation system for treating atrial fibrillation

July 11, 2017
Up to 1000 atrial fibrillation (AF) patients will be enrolled in studies evaluating the HeartLight endoscopic ablation system.

Medical device maker CardioFocus (Marlborough, MA), which focuses on advancing ablation treatment for cardiac disorders, has announced that its HeartLight endoscopic ablation system is being featured in three new major clinical studies. Collectively, up to 1000 atrial fibrillation (AF) patients will be enrolled in these studies.

Related: Mount Sinai performs first U.S. commercial procedure with CardioFocus endoscopically guided laser catheter

The first study, titled "CardioFocus vs. Contact Force Guided Pulmonary Vein Isolation in Paroxysmal Atrial Fibrillation (CF2)," is a prospective, multi-center, randomized study comparing the acute procedure and safety outcomes, as well as long-term clinical outcomes of two groups of patients. One group is being treated with the HeartLight system and the other with a commercially available Contact Force Sensing Irrigated Radiofrequency (RF) ablation catheter plus, at the operator's discretion, 3D Electroanatomical Mapping (EAM) for the treatment of paroxysmal AF. The study will recruit up to 350 patients at approximately 10 centers throughout Europe. Andreas Metzner from Asklepios Klinik St. Georg in Hamburg, Germany is leading the study.

A second randomized study, led by the Cardiovascular Center Bethanien (CCB; Frankfurt am Main, Germany), will enroll a total of 400 patients in Europe. One-hundred patients with paroxysmal AF will be treated with the HeartLight System and 100 paroxysmal AF patients will be treated with the Cryoballoon. Additionally, 100 persistent AF patients will be treated with the HeartLight system and 100 persistent AF patients will be treated with the Cryoballoon.

Comparisons across these groups will be analyzed. Boris Schmidt and Julian Chun are the principal investigators for this study. Both previously authored a paper comparing the performance of the HeartLight system to ablation with the Cryoballoon in the paroxysmal AF population. That study showed a 73% success rate (freedom from AF) at 12 months with the HeartLight system as compared with 63% with the Cryoballoon.

The third study, titled, "The Post-Approval Study (PAS) of the HeartLight Endoscopic Ablation System for the Treatment of Atrial Fibrillation," is evaluating the clinical outcomes of a cohort of patients treated during commercial use of the HeartLight system to confirm results of the successful U.S. clinical pivotal study and study additional research questions. The study will include up to 250 enrolled patients and up to 25 sites in the U.S.

Results from these three studies will provide additional clinical evidence on the performance of the HeartLight system in the AF population, helping to support its usage as a gold-standard catheter ablation therapy.

These studies follow positive data presented in May 2017 at the Heart Rhythm Society's (HRS) 38th Annual Scientific Sessions (Chicago, IL). Outcomes data on the HeartLight system were presented by Pieter Koopman of the Heart Center Hasselt (Hasselt, Belgium), Scott Gall of the Lancashire Cardiac Centre (UK), Boris Schmidt from CCB, Aditi Naniwadekar of the Helmsley Center for Cardiac Electrophysiology at Mt. Sinai Hospital (New York, NY), and Rosa M. Figueras i Ventura of the Hospital Clinic of Barcelona (Spain).

"The data continue to reinforce the chronic efficacy of laser balloon ablation with the HeartLight system in our most recent single-center comparative analysis showing freedom from AF at one year of 93%," Koopman says.

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BioOptics World Editors

We edited the content of this article, which was contributed by outside sources, to fit our style and substance requirements. (Editor’s Note: BioOptics World has folded as a brand and is now part of Laser Focus World, effective in 2022.)

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