Intervention: Clopidogrel
Trial phase: Phase 4
ATC code: B01AC04
SMILES: [H][C@@](C(=O)OC)(c1ccccc1Cl)N1CCc2sccc2C1
Sex: All
Age groups: Adult | Older Adult
Healthy volunteers: No
Participants at risk: 20
Group description: 600 mg LD followed by a 75 mg od MD starting 24 hours (± 1 h) after the LD

Clopidogrel: After providing written informed consent and following diagnostic angiography, patients meeting study entry criteria undergoing PCI will be randomly assigned in a 1:1 ratio to treatment with either ticagrelor or clopidogrel. Randomized treatment will be maintained for 30±3 days.
Eligibility criteria:
Inclusion criteria:

Provision of informed consent prior to any study specific procedures
Men or women ≥18 years of age
Diagnosed with type 2 DM defined by ongoing glucose lowering drug (oral medications and / or insulin) treatment for at least 1 month
Presence of CAD undergoing elective PCI* * Patients will need to be cardiac enzyme-negative prior to undergoing coronary angiography. Patient will need to be on a background of aspirin therapy (treated with a 325 mg LD prior to coronary angiography unless already on chronic low-dose aspirin therapy). Patients on maintenance clopidogrel 75 mg therapy for at least 1 week due to a prior vascular intervention will also be eligible. However, patients on clopidogrel, ticagrelor or prasugrel due to a prior acute major cardiovascular event (MI or stroke) will not be eligible.

Exclusion criteria:

Previous MI (with the exception of definite non-type 1 MI [eg, due to coronary revascularization procedure, profound hypotension, hypertensive emergency, tachycardia, or profound anemia])
Previous stroke (transient ischemic attack [TIA] is not included in the stroke definition)
Use of an intravenous antiplatelet therapy (i.e., cangrelor or GPI) during PCI
On treatment with clopidogrel, prasugrel, or ticagrelor due to a prior acute major CV event (MI or stroke) (on treatment with clopidogrel due to prior vascular intervention not secondary to a major CV event is allowed)
Planned use of aspirin treatment at doses >100 mg od

Anticipated concomitant oral or intravenous therapy with strong cytochrome P450 3A4 (CYP3A4) inhibitors or CYP3A4 substrates with narrow therapeutic indices that cannot be stopped for the course of the study:

Strong inhibitors: ketoconazole, itraconazole, voriconazole, telithromycin, clarithromycin (but not erythromycin or azithromycin), nefazadone, ritonavir, saquinavir, nelfinavir, indinavir, atanazavir
CYP3A4 substrates with narrow therapeutic index: quinidine, simvastatin at doses >40 mg daily or lovastatin at doses >40 mg daily
Need for chronic oral anticoagulant therapy or chronic low-molecular-weight heparin (at venous thrombosis treatment not prophylaxis doses)
Patients with known bleeding diathesis or coagulation disorder
History of previous intracerebral bleed at any time, gastrointestinal (GI) bleed within the past 6 months prior to randomization, or major surgery within 30 days prior to randomization
Active pathological bleeding
Hypersensitivity to ticagrelor and clopidogrel or any of the excipients
Increased risk of bradycardic events (eg, known sick sinus syndrome, second or third degree AV block or previous documented syncope suspected to be due to bradycardia) unless treated with a pacemaker
Known severe liver disease (eg, ascites and/or clinical signs of coagulopathy)
Renal failure requiring dialysis
Known platelet count <80x106/mL
Known hemoglobin <9 g/dL
Women of child-bearing potential (ie, those who are not chemically or surgically sterilized or who are not post-menopause) who are not willing to use a medically accepted method of contraception that is considered reliable in the judgment of the investigator OR who have a positive pregnancy test at enrolment or randomization OR women who are breast-feeding. If a subject becomes pregnant during the course of the study the investigational product should be discontinued immediately [the outcome of all pregnancies (spontaneous miscarriage, elective termination, ectopic pregnancy, normal birth or congenital abnormality) will be followed up and documented even if the subject was discontinued from the study].
Inability of the patient to understand and/or comply with study procedures and/or follow up, in the opinion of the investigator, OR any conditions that, in the opinion of the investigator, may render the patient unable to complete the study
Life expectancy of less than 1 month based on investigator's judgement
Participation in another clinical study with an investigational (defined as non-FDA approved) product within 28 days prior to enrolment
Previous randomization in the present study