Clinical Effectiveness of Topical Autologous Platelet Gel for the Treatment of Venous Ulcers

Venous Ulcer Clinical Trial

Official title: Clinical Evaluation of the Safety and Effectiveness of Topical Autologous Platelet Gel (APG) for the Treatment of Lower Extremity Chronic Venous Insufficiency Ulcers. A Multicenter, Randomized, Controlled Clinical Trial

Status Withdrawn

Clinical Trial Summary

The purpose of this study is to compare the effectiveness of standard venous ulcer care to standard venous ulcer care plus a cell based product made from the patients own blood. This product, Autologous Platelet Concentrate (APC), is a concentrate of cells in the bloodstream called platelets.

Clinical Trial Description

The purpose of this Pilot clinical study is to make a preliminary clinical and procedural assessment of the treatment of chronic venous stasis ulcers with Autologous Platelet Gel. The information and knowledge gained in the Pilot Study will be used to refine the Investigational Plan under which a Pivotal Clinical Study will be conducted. One of the advantages of conducting a pilot study is that it might give advance warning about where the main research project could fail, where research protocols may not or cannot be followed, or whether proposed methods or instruments are inappropriate or too complicated to achieve the expected clinical outcomes. The Pilot Study will provide preliminary data with which to:

• Assess the feasibility of a (full-scale) study/survey

• Refine the clinical protocol procedures

• Assess the likely success of proposed recruitment approaches

• Identifying logistical problems which might occur using proposed methods

• Estimating variability in outcomes to help determine sample size

• Determine what resources (finance, staff) are needed for a planned study

• Assess the proposed data collection and analysis techniques to uncover potential problems

• Confirm the study objectives are feasible

• Train researcher in the elements of the research process and protocol

• Assess the magnitude of the difference in the effectiveness of the investigational treatment vs control treatment

The pilot study will provide supporting clinical data for an IDE application to FDA for approval to conduct a Pivotal Study of the safety and effectiveness of APG for the treatment of chronic venous stasis ulcers. The study will evaluate the hypothesis that treatment of a chronic venous ulcer with APG prepared from Autologous Platelet Concentrate (APC+) (and the associated autologous growth factors) and Topical Thrombin (TT) has the potential to accelerate the re-epithelialization process. Harvest Technologies will submit a marketing application to FDA to expand the labeling of the SmartPReP2® Platelet Concentrate System, including its accessory kits, with the specific indication to produce APC for the purpose of promoting healing of chronic venous ulcers of the lower extremity.

60 to 100 study subjects will be enrolled from six investigational sites in this single-phase clinical trial.

The SmartPReP®2 Platelet Concentrate System is a dedicated microprocessor-controlled centrifuge. The SmartPReP®2 centrifuge and its accessory, the APC+ Process Kit, are currently available and used to produce Autologous Platelet Concentrate. The Harvest SmartJet Dual Applicator Kit is legally marketed to apply autologous blood products (K000456, K011032, and K020252). Topical Thrombin (TT), (bovine origin), USP is an approved pharmaceutical (NDC 52604-7102-1) marketed by Jones Pharma, Inc. (Thrombin-JMI®) that is not supplied by Harvest and must be obtained by the practitioner.

This study will compare standard of care medical therapy with and without APC+ and TT. Therefore, the study ulcers of the Investigational Group will receive treatment with APC+ and TT as an adjunctive treatment modality in addition to standard therapy. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Ulcer
• Varicose Ulcer
• Venous Ulcer

• NCT number: NCT00273234
• Study type: Interventional
• Source: National Healing Corporation
• Status: Withdrawn
• Phase: Phase 3
• Start date: January 2006
• Completion date: November 2006