Serum Levels of Klotho as a Possible Biomarker of Peripheral Artery Disease

Fondazione Policlinico Universitario Agostino Gemelli IRCCS207 enrolled

Overview

Klotho, a membrane-bound protein co-receptor for fibroblast growth factor 23 (FGF23), is involved in atherosclerotic process and cardiovascular diseases. It regulates blood glucose and cholesterol levels. In addition, the lack of klotho has been associated with endothelial dysfunction, calcification and accumulation of cholesterol in the arteries, leading to coronary heart disease. The goal of this observational study is to evaluate the potential use of circulating klotho and FGF23 serum levels as biomarkers of major adverse limb events (MALE) and major adverse cardiovascular events (MACE) in patients with peripheral artery disease (PAD) and chronic limb threatening ischemia (CLTI) requiring a procedure of endovascular revascularization. The main questions it aims to answer are: * association between klotho and FGF23 serum levels and major adverse limb events (MALE) after lower extremity revascularization. * association between klotho and FGF23 serum levels and major adverse cardiovascular events (MACE) after lower extremity revascularization. Patients with PAD and CLTI requiring lower extremity endovascular revascularization will undergo blood sampling for the dosage of circulating klotho and FGF23 before the endovascular procedure. Incidence of MACE and MALE will be collected in a 12-months follow-up and will be associated with klotho and FGF23 serum levels at baseline.

Study Type

OBSERVATIONAL

Enrollment

207

Conditions

Peripheral Arterial Disease

Eligibility

Sex: ALLMin age: 40 Years

Medical Language ↔ Plain English

Inclusion Criteria: * age of at least 40 years * Ankle/Brachial Index (ABI) of less than 80 * at least one lower limb stenosis greater than 50% documented by Ultrasound Color Doppler (US) * stage 4 or 5 PAD diagnosis according to the Rutherford classification * presence of chronic limb threatening ischemia * indication for LER of the target arterial stenosis Exclusion Criteria: * pregnancy * acute infections at present or in the previous month * primary hyperparathyroidism * revascularization of the lower limb in the previous 3 months * diabetic foot ulcers with signs of active infection or osteomyelitis * diabetic peripheral neuropathy * homozygous familial hypercholesterolemia * absolute contraindication to antiplatelet therapy * thrombophilia * active cancer * active autoimmune disease * liver disease at functional status B or C according to Child-Pugh * contraindication to endovascular revascularization * organ transplantation

Outcomes

Primary Outcomes

Association between incidence of MALE and klotho and FGF23 serum levels

To evaluate the association between klotho and FGF23 serum levels before endovascular revascularization and MALE during the follow-up period.

Time frame: 12-months follow-up

Secondary Outcomes

Association between incidence of myocardial infarction and klotho and FGF23 serum levels

To evaluate the association between klotho and FGF23 serum levels before endovascular revascularization and myocardial infarction during the follow-up period.

Time frame: 12-months follow-up

Association between incidence of stroke and klotho and FGF23 serum levels

To evaluate the association between klotho and FGF23 serum levels before endovascular revascularization and stroke during the follow-up period.

Time frame: 12-months follow-up

Association between incidence of cardiovascular death and klotho and FGF23 serum levels

To evaluate the association between klotho and FGF23 serum levels before endovascular revascularization and cardiovascular death during the follow-up period.

Time frame: 12-months follow-up

Serum Levels of Klotho as a Possible Biomarker of Peripheral Artery Disease

Overview

Conditions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts