PMID- 32893120 OWN - NLM STAT- MEDLINE DCOM- 20210210 LR - 20210210 IS - 1477-2566 (Electronic) IS - 1465-3249 (Linking) VI - 22 IP - 12 DP - 2020 Dec TI - Effects of stem cells on non-ischemic cardiomyopathy: a systematic review and meta-analysis of randomized controlled trials. PG - 699-711 LID - S1465-3249(20)30780-5 [pii] LID - 10.1016/j.jcyt.2020.06.006 [doi] AB - BACKGROUND AIMS: To assess the impacts of stem cell therapy on clinical outcomes in patients with non-ischemic cardiomyopathy (NICM). The effect of stem cell therapy on prognosis is unclear and controversial. METHODS: The authors performed a systematic review and meta-analysis of the effects of autologous stem cell transplantation in patients with NICM on a composite outcome of all-cause mortality and heart transplantation, left ventricular ejection fraction (LVEF), left ventricular end-diastolic diameter (LVEDD), New York Heart Association (NYHA) classification, 6-minute walk test (6-MWT) distance and serum brain natriuretic peptide (BNP) level, considering studies published before March 19, 2020. RESULTS: Twelve trials with 623 subjects met inclusion criteria. Compared with the control group, stem cell therapy improved LVEF (weighted mean difference [WMD], 4.08%, 95% confidence interval [CI], 1.93-6.23, P = 0.0002) and 6-MWT distance (WMD, 101.49 m, 95% CI, 45.62-157.35, P = 0.0004) and reduced BNP level (-294.94 pg/mL, 95% CI, -383.97 to -205.90, P < 0.00001) and NYHA classification (-0.70, 95% CI, -0.98 to -0.43, P < 0.00001). However, LVEDD showed no significant difference between the two groups (WMD, -0.09 cm, 95% CI, -0.23 to 0.06, P = 0.25). In 10 studies (535 subjects) employing the intracoronary route for cell delivery, mortality and heart transplantation were decreased (risk ratio [RR], 0.73, 95% CI, 0.52-1.00, P = 0.05). Furthermore, in four studies (248 subjects) with peripheral CD34+ cells, either all-cause mortality (RR, 0.44, 95% CI, 0.23-0.86, P = 0.02) or mortality and heart transplantation (RR, 0.45, 95% CI, 0.27-0.77, P = 0.003) improved in the treatment group compared with the control. The trial sequential analysis suggested the information size of LVEF, 6-WMT and BNP has been adequate for evidencing the benefits of stem cells on NICM. However, to determine the potential survival benefit, more clinical data are required to make the statistical significance in meta-analysis more conclusive. CONCLUSIONS: This meta-analysis demonstrates that stem cell therapy may improve survival, exercise capacity and cardiac ejection fraction in NICM, which suggests that stem cells are a promising option for NICM treatment. CI - Copyright (c) 2020 International Society for Cell & Gene Therapy. Published by Elsevier Inc. All rights reserved. FAU - Xia, Liang AU - Xia L AD - Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China. Electronic address: icewater20042005@aliyun.com. FAU - Zeng, LingHui AU - Zeng L AD - Department of Pharmacology, School of Medicine, Zhejiang University City College, Hangzhou, China. FAU - Pan, JianPing AU - Pan J AD - Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China. FAU - Ding, YueMin AU - Ding Y AD - Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, China. LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't PT - Systematic Review DEP - 20200904 PL - England TA - Cytotherapy JT - Cytotherapy JID - 100895309 SB - IM MH - Cardiomyopathies/etiology/mortality/physiopathology/*therapy MH - Humans MH - Male MH - Middle Aged MH - Myocardial Ischemia/*complications/physiopathology MH - Publication Bias MH - Randomized Controlled Trials as Topic MH - *Stem Cell Transplantation/adverse effects MH - Stroke Volume/drug effects MH - Transplantation, Autologous MH - Walk Test OTO - NOTNLM OT - cardiomyopathy OT - meta-analysis OT - stem cell transplantation OT - trial sequential analysis EDAT- 2020/09/08 06:00 MHDA- 2021/02/11 06:00 CRDT- 2020/09/07 05:32 PHST- 2020/03/19 00:00 [received] PHST- 2020/06/01 00:00 [revised] PHST- 2020/06/19 00:00 [accepted] PHST- 2020/09/08 06:00 [pubmed] PHST- 2021/02/11 06:00 [medline] PHST- 2020/09/07 05:32 [entrez] AID - S1465-3249(20)30780-5 [pii] AID - 10.1016/j.jcyt.2020.06.006 [doi] PST - ppublish SO - Cytotherapy. 2020 Dec;22(12):699-711. doi: 10.1016/j.jcyt.2020.06.006. Epub 2020 Sep 4.