We compared outcomes of percutaneous coronary intervention patients who received biodegradable-polymer biolimus-eluting stents with those who received durable-polymer everolimus-eluting stents.At C oronary artery stenting is widely accepted as the treatment of choice for most cases of coronary artery disease (CAD). Implantation of the drug-eluting stents (DESs), in comparison with the bare-metal stents (BMS), has conferred better outcomes for coronary artery stenting. [1][2][3][4] Although the administration of the first-generation DES showed a higher rate of success than that of the BMS, doubts were raised over its safety because of the reported cases of late stent thrombosis and very late restenosis. 5 The link between late stent thrombosis and incomplete endothelial coverage of the stent struts caused changes in the design and materials of the platforms and polymers of the stents. 6 Randomized controlled trials and studies have revealed promising results after the implantation of the zotarolimus-and the everolimus-eluting stents, in comparison with the first-generation DES and the BMS.7-9 On the other hand, concerns about late stent failure caused by untoward reactions to the stent polymer led to the introduction of a new-generation DES in which polymers degrade after the termination of drug release. 10 In these stents, drug release lasts about 28 days and an abluminal biodegradable polymer is absorbed after 6 to 9 months, thus turning the DES into a BMS and, theoretically, averting late stent failure as a result of reaction to polymers. Trials have shown the noninferiority of the biodegradable-polymer biolimus-eluting stent (BP-BES) to the previous generations of DESs; however, only a few investigators have compared the biodegradable-polymer with the durable-polymer DES in real-world registries. 11,12 Further analysis of large and