PMID- 32419594 OWN - NLM STAT- MEDLINE DCOM- 20201102 LR - 20221207 IS - 1545-1550 (Electronic) IS - 1526-6028 (Linking) VI - 27 IP - 4 DP - 2020 Aug TI - Stromal Cell-Derived Factor-1 Plasmid Treatment for Patients With Peripheral Artery Disease (STOP-PAD) Trial: Six-Month Results. PG - 669-675 LID - 10.1177/1526602820919951 [doi] AB - Purpose: To present the 6-month results of the Stromal Cell-Derived Factor-1 Plasmid Treatment for Patients with Peripheral Artery Disease (STOP-PAD) trial. The trial was an attempt to alter the course of chronic limb-threatening ischemia (CLTI) with a biological agent vs placebo after successful arterial revascularization at or below the knee. Materials and Methods: The multicenter, randomized, double-blinded, placebo-controlled, phase 2B STOP-PAD trial (ClinicalTrials.gov identifier NCT02544204) randomized 109 patients (mean age 71 years; 68 men) with Rutherford category 5 or 6 CLTI and evidence of persistent impaired forefoot perfusion following recent successful revascularization to 8- (n=34) or 16-mg (n=36) intramuscular injections of a non-viral DNA plasmid-based treatment vs placebo (n=34). The primary efficacy outcome was the 6-month wound healing score evaluated by an independent wound core laboratory; the primary safety endpoint was major adverse limb events (MALE), a composite of major amputation plus clinically-driven target lesion revascularization at 6 months. Results: Only one-third of the patients had complete wound healing at 6 months in the placebo (31%), 8-mg injection (33%), and 16-mg injection (33%) groups. In addition, the observed increase in the toe-brachial index from baseline to 6 months was statistically significant in each group; however, this did not result in lower rates of MALE at 6 months (24% in the placebo, 29% in the 8-mg injection, and 11% in the 16-mg injection groups). During the 6-month period, 6 patients (6%) died, and 24 patients (23%) had an amputation [only 4 (4%) major]. Conclusion: Combining revascularization and biological therapy failed to improve outcomes in CLTI at 6 months. STOP-PAD has provided insights for future trials to evaluate biological therapy. FAU - Hammad, Tarek A AU - Hammad TA AD - Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH, USA. FAU - Rundback, John AU - Rundback J AD - Interventional Institute, Holy Name Medical Center, Teaneck, NJ, USA. FAU - Bunte, Matthew AU - Bunte M AD - Saint Luke's Mid America Heart Institute, St Luke's Hospital and University of Missouri-Kansas City School of Medicine, Kansas City, MO, USA. FAU - Miller, Leslie AU - Miller L AD - BayCare Physician Partners, Clearwater, FL, USA. FAU - Patel, Parag D AU - Patel PD AD - BayCare Physician Partners, Clearwater, FL, USA. FAU - Sadanandan, Saihari AU - Sadanandan S AD - St Joseph's Hospital, Tampa, FL, USA. FAU - Fitzgerald, Michael AU - Fitzgerald M AD - Juventas Therapeutics, Cleveland, OH, USA. FAU - Pastore, Joseph AU - Pastore J AD - Juventas Therapeutics, Cleveland, OH, USA. FAU - Kashyap, Vikram AU - Kashyap V AD - Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH, USA. FAU - Henry, Timothy D AU - Henry TD AD - The Christ Hospital, Cincinnati, OH, USA. FAU - Shishehbor, Mehdi H AU - Shishehbor MH AUID- ORCID: 0000-0002-4888-2431 AD - Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH, USA. LA - eng SI - ClinicalTrials.gov/NCT02544204 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20200518 PL - United States TA - J Endovasc Ther JT - Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists JID - 100896915 RN - 0 (CXCL12 protein, human) RN - 0 (Chemokine CXCL12) SB - IM MH - Aged MH - Amputation, Surgical MH - Chemokine CXCL12/*biosynthesis/genetics MH - Chronic Disease MH - Double-Blind Method MH - Female MH - *Genetic Therapy/adverse effects MH - Humans MH - Ischemia/genetics/metabolism/physiopathology/*therapy MH - Limb Salvage MH - Male MH - *Neovascularization, Physiologic MH - Peripheral Arterial Disease/genetics/metabolism/physiopathology/*therapy MH - *Plasmids MH - Recovery of Function MH - Regional Blood Flow MH - Time Factors MH - Treatment Outcome MH - United States MH - Vascular Surgical Procedures MH - Wound Healing OTO - NOTNLM OT - amputation OT - biological therapies OT - chronic limb-threatening ischemia OT - ischemic ulcer OT - lower extremity wound OT - microcirculation OT - peripheral artery disease OT - randomized controlled trials OT - revascularization OT - toe-brachial index OT - wound healing EDAT- 2020/05/19 06:00 MHDA- 2020/11/03 06:00 CRDT- 2020/05/19 06:00 PHST- 2020/05/19 06:00 [pubmed] PHST- 2020/11/03 06:00 [medline] PHST- 2020/05/19 06:00 [entrez] AID - 10.1177/1526602820919951 [doi] PST - ppublish SO - J Endovasc Ther. 2020 Aug;27(4):669-675. doi: 10.1177/1526602820919951. Epub 2020 May 18.