Dr Carolyn Lam: Welcome to Circulation on the Run, your weekly podcast summary and backstage pass to the journal and its editors. I'm Dr Carolyn Lam, associate editor from the National Heart Center and Duke National University of Singapore. Dr Greg Hundley: And I'm Dr Greg Hundley associated editor from the Pauly Heart Center at VCU health in Richmond, Virginia. Well Carolyn, this week's feature investigates the compass trial and is going to examine the role of combination antiplatelet and anticoagulation therapy in patients with diabetes and cardiovascular disease. But before we get to that feature discussion, how about we grab a cup of coffee and jump in and discuss some of the other papers in the issue? Dr Carolyn Lam: You bet, Greg. I've got my coffee right here, and I'd like to start by talking about paclitaxel containing devices. You may already know this, but it was nice to revise that these significantly reduce re intervention in patients with symptomatic femoral, popliteal, peripheral artery disease, as we may expect. However, a recent aggregate data meta-analysis reported increase late mortality in pad patients treat it with these paclitaxel containing devices. Thus today's authors, Dr Rocha-Singh from Prairie Heart Institute of Illinois at St. John's hospital and their colleagues performed an individual patient data meta-analysis to evaluate mortality using data from eight randomized controlled trials of FDA approved paclitaxel coated devices using de identified data that was provided by manufacturers. Dr Greg Hundley: Well, Carolyn, what did they find? Dr Carolyn Lam: So in 2,185 patients and 386 deaths from eight paclitaxel coated device trials with a four year median follow-up, there was a 4.6% absolute risk of increased mortality associated with paclitaxel coated device use compared to balloon angioplasty at a median of four years follow up, significant loss to follow up and withdrawal rates of 24% and 23% in balloon angioplasty and paclitaxel cohorts respectively through five years were observed. Recovery of lost vital status data reduced the observed paclitaxel device associated mortality rate. And there was no paclitaxel drug dose mortality relationship identified. Dr Greg Hundley: Oh, Carolyn, I think this is really an important finding, and we have a nice editorial, don't we? So what was the take home message? Dr Carolyn Lam: Yeah. In fact, this was discussed in an important editorial by doctors Royce, Chakraborty and Dao from the USFDA. Now listen up. So based on the prior aggregate data meta-analysis and subsequent FDA review, FDA had already communicated that clinicians should consider the increased rate of long-term mortality when making treatment recommendations. They had also implemented updated labeling for this device class to communicate the risk. So in this editorial, the FDA commended the authors of the current individual patient data meta-analysis for providing important information towards signal refinement, and also commend at their collaboration with device manufacturers to work together with a shared goal of patient safety. Now, there are still many unanswered questions, including the mechanism for the observed increase in late term mortality associated with these devices and how the benefit risk profile of these devices may shift across various patient populations. Dr Greg Hundley: Well Carolyn, my paper comes from Professor Antje Beling from Charité – Universitätsmedizin Berlin in Berlin. And it investigates heart specific immune responses in an animal model of auto immune related Meyer carditis mitigated by an immuno proteasome inhibitor and a genetic ablation. So Carolyn, this study used mouse models to understand mechanisms involved in immune checkpoint inhibitor related Maya carditis, a phenomenon that we can observe in 5% to 10% of patients that are receiving these checkpoint inhibitors for treatment of their cancer. Dr Carolyn Lam: So what did they find, Greg? Dr Greg Hundley: Severa