Eligibility Criteria:
Inclusion Criteria:
* CI1. Subject must be 18 -75 years of age
* CI2. Subject (or legal guardian) understands the trial requirements and the treatment procedures and provides written informed consent before any trial-specific tests or procedures are performed
* CI3. Subject is eligible for percutaneous coronary intervention (PCI)
* CI4. Subject has symptomatic coronary artery disease with objective evidence of ischemia or silent ischemia
* CI5. Subject is an acceptable candidate for coronary artery bypass grafting (CABG)
* CI6. Subject is willing to comply with all protocol-required follow-up evaluation
* CI7. Subject has a left ventricular ejection fraction (LVEF) \>30% as measured within 60 days prior to enrollment
* AI1. Target lesion(s) must be de novo lesion located in a native coronary artery with a visually estimated reference vessel diameter (RVD) ≥2.25 mm and ≤4.0 mm
* AI2. Target lesion(s) length must be ≤34 mm (by visual estimate)
* AI3. Target lesion(s) must have visually estimated stenosis ≥50% and \<100% with thrombolysis in Myocardial Infarction (TIMI) flow \>1 and one of the following: stenosis ≥70%, abnormal fractional flow reserve (FFR), abnormal stress or imaging stress test, or elevated biomarkers prior to the procedure
* AI4. Coronary anatomy is likely to allow delivery of a study device to the target lesions(s)
* AI5. The first lesion treated must be successfully predilated/pretreated
Exclusion Criteria:
* CE1. Subject has clinical symptoms and/or electrocardiogram (ECG) changes consistent with acute MI .
* CE2. Subject with unstable angina or recent MI (within 1 week) must have CK/CK-MB or troponin documented prior to the procedure and are excluded if any of the following criteria are met at the time of the index procedure:
* If CK MB \>2× upper limit of normal (ULN), the subject is excluded regardless of the CK Total.
* If CK Total \>2× ULN, either CK-MB or troponin must be drawn and the subject is excluded if either CK-MB or troponin is abnormal.
* If neither CK Total or CK MB is drawn but troponin is, the subject is excluded if troponin \>1× ULN and the subject has at least one of the following:
* Subject has ischemic symptoms and ECG changes indicative of ongoing ischemia (e.g., \>1 mm ST segment elevation or depression in consecutive leads or new left bundle branch block \[LBBB\])
* Development of pathological Q waves in the ECG or
* Imaging evidence of new loss of viable myocardium or new regional wall motion abnormality
* CE3. Subject has cardiogenic shock, hemodynamic instability requiring inotropic or mechanical circulatory support, or intractable ventricular arrhythmias or ongoing intractable angina
* CE4. Subject has received an organ transplant or is on a waiting list for an organ transplant
* CE5. Subject is receiving or scheduled to receive chemotherapy within 30 days before or after the index procedure
* CE6. Planned PCI or CABG after the index procedure
* CE7. Subject has a known allergy to the trial stent system or protocol-required concomitant medications (e.g., platinum, platinum-chromium alloy, stainless steel, everolimus or structurally related compounds, polymer or individual components, clopidogrel, or aspirin) and contrast (that cannot be adequately premedicated)
* CE8. Subject has a known condition(s) of the following (as assessed from the time of screening through the day of index procedure):
* Other serious medical illness (e.g., cancer, congestive heart failure) that may reduce life expectancy to less than 24 months
* Current problems with substance abuse (e.g., alcohol, cocaine, heroin, etc.)
* Planned procedure that may cause non-compliance with the protocol or confound data interpretation
* CE9. Subject is receiving chronic (≥72 hours) anticoagulation therapy (i.e., heparin, Coumadin) for indications other than acute coronary syndrome
* CE10. Subject with out of range complete blood count (CBC) values that are determined by the study physician to be clinically significant.
* CE11. Subject has documented or suspected liver disease, including laboratory evidence of hepatitis
* CE12. Subject is on dialysis or has baseline serum creatinine level \>2.0 mg/dL (177µmol/L)
* CE13. Subject has a history of bleeding diathesis or coagulopathy or will refuse blood transfusions
* CE14. Subject has had a history of cerebrovascular accident (CVA) or transient ischemic attack (TIA) within the past 6 months
* CE15. Subject has an active peptic ulcer or active gastrointestinal (GI) bleeding
* CE16. Subject has signs or symptoms of active heart failure (i.e., NYHA class IV) at the time of the index procedure
* CE17. Subject is participating in another investigational drug or device clinical trial that has not reached its primary endpoint
* CE18. Subject intends to participate in another investigational drug or device clinical trial within 12 months after the index procedure
* CE19. Subject with known intention to procreate within 12 months after the index procedure (women of child-bearing potential who are sexually active must agree to use a reliable method of contraception from the time of screening through 12 months after the index procedure)
* CE20. Subject is a woman who is pregnant or nursing (a pregnancy test must be performed within 7 days prior to the index procedure in women of child-bearing potential)
* CE21. Target vessel has been treated with any type of PCI (e.g., balloon angioplasty, stent, cutting balloon, atherectomy) within 12 months prior to the index procedure
* AE1. Planned treatment of more than 2 lesions
* AE2. Planned treatment of lesions in more than 2 major epicardial vessels
* AE3. Planned treatment of a single lesion with more than 1 stent Note: Planned use of 2 overlapping stents will be allowed in subjects randomized to PROMUS Element Plus where lesion length is ≥28 mm and 2.25 mm stents are used.
* AE4. Target lesion meets any of the following criteria:
* Left main location
* Located within 3 mm of the origin of the left anterior descending (LAD) coronary artery or left circumflex (LCX) coronary artery by visual estimate
* Located within a saphenous vein graft or an arterial graft
* Will be accessed via a saphenous vein graft or an arterial graft
* TIMI flow 0 (total occlusion) or TIMI flow 1 prior to guide wire crossing
* Thrombus, or possible thrombus, present in the target vessel
* Excessive tortuosity proximal to or within the lesion
* Excessive angulation proximal to or within the lesion
* Target lesion and/or the target vessel proximal to the target lesion is moderately to severely calcified by visual estimate
* Involves a side branch ≥2.0 mm in diameter by visual estimate or a side branch \<2.0 mm in diameter by visual estimate which requires treatment
* AE5. Target lesion(s) treated during the index procedure that involves a complex bifurcation (e.g., bifurcation lesion requiring treatment with more than 1 stent)
* AE6. Target lesion(s) is restenostic from a previous stent implantation or study stent would overlap with a previous stent
* AE7. Subject has unprotected left main coronary artery disease (\>50% diameter stenosis)
* AE8. Subject has protected left main coronary artery disease (\>50% diameter stenosis in the LMCA with bypass graft(s) to the left coronary artery) and a target lesion in the LAD or LCX