This guidance is intended to provide recommendations to sponsors or applicants planning to develop, or to submit to FDA, a marketing application for a coronary drug eluting stent (DES). The guidance discusses the data and clinical studies needed to support such an application. This guidance does not discuss noncoronary DESs (e.g., peripheral drug-eluting, nonvascular biliary stents) or stents that contain biological product components such as cell or gene therapy or therapeutic biological products such as monoclonal antibodies. The guidance makes recommendations for stents made from metallic stent substrates, but does not provide complete information for degradable stents or stents made from other material substrates (e.g., polymer or ceramics).