Low Dose ColchicinE in pAtients With Peripheral Artery DiseasE to Address Residual Vascular Risk

Inclusion criteria:

1. Age > 18 years

2. Symptomatic atherosclerotic LE PAD fulfilling at least one of the following: a. Intermittent claudication with ankle/arm blood pressure ratio* (ABI ≤ 0.90) orartery stenosis ≥ 50% plus one of i. >1 vascular bed affected by atherosclerosis ii.Diabetes iii. Heart failure iv. Chronic kidney disease (eGFR < 60 mL/min/1.73 m2) b. Rest pain (mostly in foot) OR necrosis of limb OR gangrene of limb (correspondingto either Fontaine stages 3 or 4 OR Rutherford Classification categories 4 to 6).All must have an ankle/arm blood pressure ratio* (ABI ≤ 0.90) OR artery stenosis ≥ 50%.

• In cases of incompressible ankle arteries, the presence of toe pressure ≤ 60 mm Hgor toe-brachial index ≤ 0.70 is acceptable c. Revascularization defined as limb bypass surgery or endovascularrevascularization procedures (irrespective of the specific device used), includingpercutaneous transluminal angioplasty/stent of iliac or infra-inguinal arteries orextra-anatomical bypass surgery d. Leg or foot amputation for arterial vascular indications

3. Written or verbal informed consent from the patient

Exclusion Criteria:

1. Contraindication to colchicine

2. Long term requirement for colchicine for another clinical indication

3. Active diarrhoea

4. eGFR < 30 mL/min/1.73 m2

5. Cirrhosis or severe chronic liver disease

6. Woman who is pregnant, or breast-feeding or of child-bearing potential not protectedby reliable contraception or is planning conception during the study

7. Current or planned long term use of cyclosporine, verapamil, HIV proteaseinhibitors, azole antifungals, or macrolide antibiotics (with the exception ofazithromycin)

8. Patients who are deemed unlikely to return for follow-up

9. Patients with life expectancy < 1 year