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  • Title: Durability of Treatment Effect Using a Drug-Coated Balloon for Femoropopliteal Lesions: 24-Month Results of IN.PACT SFA.
    Author: Laird JR, Schneider PA, Tepe G, Brodmann M, Zeller T, Metzger C, Krishnan P, Scheinert D, Micari A, Cohen DJ, Wang H, Hasenbank MS, Jaff MR, IN.PACT SFA Trial Investigators.
    Journal: J Am Coll Cardiol; 2015 Dec 01; 66(21):2329-2338. PubMed ID: 26476467.
    Abstract:
    BACKGROUND: Evidence from large, randomized, controlled peripheral artery disease trials reporting long-term outcomes using drug-coated balloons (DCBs) is limited. Previously, the DCB showed favorable 1-year outcomes compared with conventional percutaneous transluminal angioplasty (PTA), yet durability of the treatment effect with DCBs remains unknown. OBJECTIVES: This study sought to investigate the longer-term outcomes of a paclitaxel-eluting DCB compared to PTA for femoropopliteal lesions. METHODS: We enrolled 331 patients with symptomatic (Rutherford 2 to 4) femoropopliteal lesions up to 18 cm in length. Patients were randomly assigned in a 2:1 ratio to treatment with DCB or PTA. The 24-month assessments included primary patency, freedom from clinically driven target lesion revascularization (CD-TLR), major adverse events, and quality of life and functional outcomes as assessed by the EuroQOL-5D quality-of-life questionnaire, walking impairment questionnaire, and 6-min walk test. RESULTS: At 24 months, patients treated with DCB showed significantly higher primary patency when compared with PTA (78.9% vs. 50.1%; p < 0.001). The rates of CD-TLR were 9.1% and 28.3% (p < 0.001) for the DCB and PTA groups, respectively. The overall mortality rate in the DCB group was 8.1% versus 0.9% in the PTA group (p = 0.008). There were no device- or procedure-related deaths and no major amputations in either group through 24-month follow-up. The rate of vessel thrombosis was low (1.5% DCB vs. 3.8% PTA; p = 0.243), with no new events reported between 1 and 2 years. Both groups showed similar functional improvement at 2 years, although DCB patients achieved this level of function with 58% fewer reinterventions. CONCLUSIONS: The 24-month outcomes from the trial demonstrate a durable and superior treatment effect of DCB versus PTA with significantly higher primary patency, lower CD-TLR, and similar functional status improvement with fewer repeat interventions. (Randomized Trial of IN.PACT Admiral Drug Eluting Balloon vs Standard PTA for the Treatment of SFA and Proximal Popliteal Arterial Disease [INPACT SFA I]; NCT01175850; and IN.PACT Admiral Drug-Coated Balloon vs. Standard Balloon Angioplasty for the Treatment of Superficial Femoral Artery [SFA] and Proximal Popliteal Artery [PPA] [INPACT SFA II]; NCT01566461).
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