Nine-month results of the BIOHELIX-I clinical trial study: Evaluation of the PRO-Kinetic Energy cobalt chromium bare-metal stent system

Tesfaldet T. Michael, Gert Richardt, Alexandra Lansky, Robert J. Carney, Muhammad Akram Khan, Abbas Shehadeh, Uwe Zeymer, Saurabh Gupta

    Research output: Contribution to journalArticlepeer-review

    2 Scopus citations


    Objectives: To evaluate the safety and efficacy of the PRO-Kinetic Energy (PKE) Cobalt Chromium Coronary Stent System (BIOTRONIK AG, Switzerland). Background: Percutaneous coronary intervention is a mainstay treatment for symptomatic coronary artery disease (CAD). While drug-eluting stents constitute a majority of implants, bare-metal stents (BMS) remain important for a subset of patients. Newer generation BMS offer advantages due to stent design improvements. Methods: The BIOHELIX-I study was a prospective, multicenter, non-randomized, single arm clinical trial designed to evaluate the safety and efficacy of the PKE bare metal stent. Thirty-three study centers (US, Columbia, Europe) enrolled 329 patients for treatment of one target lesion (≤31 mm). Eligible patients received a PKE stent(s), at least one month of dual antiplatelet therapy and were followed for 36-months. The primary endpoint was the 9-month rate of target vessel failure (TVF) compared with a prespecified performance goal of 18.7% derived from prior BMS trials. Results: The mean patient age was 69 years, 28.6% with diabetes. The mean lesion length was 13.7 ± 6.0 mm. The 9-month TVF rate was 9.06% and met the primary endpoint (P < 0.001). The TVF component rates were 0.95% cardiac death, 1.58% myocardial infarction, and 7.26% ischemia-driven target vessel revascularization (TVR). The ischemia-driven target lesion revascularization rate at 9-months was 6.62%. Conclusions: The 9-month TVF rate of the PKE stent was comparable to other BMS and is a viable option for treating CAD. The low observed rate of ischemia-driven TVR supports the safety and efficacy of the novel BMS design.

    Original languageEnglish (US)
    Pages (from-to)1030-1039
    Number of pages10
    JournalCatheterization and Cardiovascular Interventions
    Issue number6
    StatePublished - Nov 15 2018


    • PRO-Kinetic Energy
    • angina
    • bare-metal stent
    • percutaneous coronary intervention

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging
    • Cardiology and Cardiovascular Medicine


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