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Intima Versus Adventitia Drug Delivery to Elucidate Mechanisms of Restenosis: Magnetic Resonance Imaging — INVADER MRI  

Peripheral Artery Disease Clinical Trial

Official title:
Intima Versus Adventitia Drug Delivery to Elucidate Mechanisms of Restenosis: Magnetic Resonance Imaging

Clinical Trial Summary

This is a prospective, multicenter, randomized trial to determine the mechanisms of vascular healing. The study will evaluate subjects with peripheral artery disease (PAD) who require an endovascular intervention of the femoro-popliteal (SFA) artery to restore blood flow to the leg.

Clinical Trial Description

Peripheral artery disease (PAD) affects at least 12 million Americans annually with more than half a million patients undergoing an endovascular or surgical revascularization procedure in order to treat the disease. Unfortunately, about two-thirds of patients still have blockages in the leg arteries, even after these procedures. Advances in Magnetic resonance imaging (MRI) offer promise for understanding the mechanism of failure through insights into vessel wall composition, remodeling, and inflammation. Restenosis has a known relationship to inflammation. Advances in micro-catheter technologies offer the ability to deliver anti-inflammatory medications such as Dexamethasone (DEX) directly to the adventitia and advances in drug delivery on balloon surfaces to deliver paclitaxel to the intima of the artery. This study aims to investigate if patient-specific parameters affect angioplasty outcomes, if DEX has a biological effect on the vessel wall, and if this effect is through the reduction of inflammation. In response to an FDA issued "Letter to Healthcare Providers" dated August 9, 2019 that reported the "relative risk for increased mortality at 5 years was 1.57 (95% confidence interval 1.16 - 2.13), which corresponds to a 57% relative increase in mortality in patients treated with paclitaxel-coated devices," participant enrollment in the paclitaxel drug coated balloon arm was stopped and a plain balloon angioplasty arm was added to the protocol. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02807779
Study type Interventional
Source University of California, San Francisco
Contact
Status Active, not recruiting
Phase Phase 4
Start date February 10, 2016
Completion date October 2022
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