Boston Scientific secures USFDA okay for AGENT Drug-Coated Balloon to treat coronary in-stent restenosis

Following Breakthrough Device Designation granted for the technology by the FDA in 2021, the approval was supported by positive results from the multicenter, prospective, randomized controlled AGENT IDE trial, which enrolled 600 patients at 40 U.S. sites. In the prespecified interim analysis of the first 480 patients enrolled, the study met the primary endpoint of target lesion failure (TLF) at 12 months with the AGENT DCB demonstrating statistical superiority to uncoated balloon angioplasty (17.9% vs. 28.7%; P=0.006). Findings also included zero definite/probable cases of clotting within the stent (0.0% vs. 3.9%, P=0.001), a 49% risk reduction in heart attack at the target vessel (6.4% vs. 12.3%, P=0.03) and low adverse event rates at 12 months.

"The AGENT IDE trial demonstrated that the AGENT DCB is an effective and safe treatment option for coronary in-stent restenosis, even in a high-risk population, which included many individuals with multi-layer stents or diabetes," said principal investigator Dr. Robert W. Yeh, section chief of interventional cardiology at the Beth Israel Deaconess Medical Center. "Treating ISR has been challenging in the U.S. with limited therapies available, and this new technology will help physicians reduce the risk of restenosis without radiation or introducing additional metal layers, which do not provide an adequate result for some patients."

The AGENT DCB is available in Europe, parts of Asia Pacific and Latin America for the treatment of patients with ISR and previously untreated small vessel coronary disease. Boston Scientific plans to launch the technology in the U.S. in the coming months.