Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis

Abstract Transplantation of several types of stem cells (SC) for the treatment of amyotrophic lateral sclerosis (ALS) has been evaluated in numerous Phase I/II clinical trials with inconclusive results. Here, we conducted a meta-analysis to systematically assess the outcome of SC therapy trials whic...

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Autores principales: Cynthia Morata-Tarifa, Garikoitz Azkona, Jonathan Glass, Letizia Mazzini, Rosario Sanchez-Pernaute
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Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/2fbb57f2b2d8490a838bf471fd9df03c
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spelling oai:doaj.org-article:2fbb57f2b2d8490a838bf471fd9df03c2021-12-02T14:25:02ZLooking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis10.1038/s41536-021-00131-52057-3995https://doaj.org/article/2fbb57f2b2d8490a838bf471fd9df03c2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41536-021-00131-5https://doaj.org/toc/2057-3995Abstract Transplantation of several types of stem cells (SC) for the treatment of amyotrophic lateral sclerosis (ALS) has been evaluated in numerous Phase I/II clinical trials with inconclusive results. Here, we conducted a meta-analysis to systematically assess the outcome of SC therapy trials which report the evolution of each patient before and after cell administration. In this way, we aimed to determine the effect of the SC intervention despite individual heterogeneity in disease progression. We identified 670 references by electronic search and 90 full-text studies were evaluated according to the eligibility criteria. Eleven studies were included comprising 220 cell-treated patients who received mesenchymal (M) SC (n = 152), neural (N) SC (n = 57), or mononuclear cells (MNC: CD34, CD117, and CD133 positive cells) (n = 11). Our analyses indicate that whereas intrathecal injection of mesenchymal stromal cells appears to have a transient positive effect on clinical progression, as measured by the ALS functional rating score, there was a worsening of respiratory function measured by forced vital capacity after all interventions. Based on current evidence, we conclude that optimal cell product and route of administration need to be determined in properly controlled preclinical models before further advancing into ALS patients. In addition, in-depth understanding of disease mechanisms in subsets of patients will help tailoring SC therapy to specific targets and increase the likelihood of improving outcomes.Cynthia Morata-TarifaGarikoitz AzkonaJonathan GlassLetizia MazziniRosario Sanchez-PernauteNature PortfolioarticleMedicineRENnpj Regenerative Medicine, Vol 6, Iss 1, Pp 1-10 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
spellingShingle Medicine
R
Cynthia Morata-Tarifa
Garikoitz Azkona
Jonathan Glass
Letizia Mazzini
Rosario Sanchez-Pernaute
Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
description Abstract Transplantation of several types of stem cells (SC) for the treatment of amyotrophic lateral sclerosis (ALS) has been evaluated in numerous Phase I/II clinical trials with inconclusive results. Here, we conducted a meta-analysis to systematically assess the outcome of SC therapy trials which report the evolution of each patient before and after cell administration. In this way, we aimed to determine the effect of the SC intervention despite individual heterogeneity in disease progression. We identified 670 references by electronic search and 90 full-text studies were evaluated according to the eligibility criteria. Eleven studies were included comprising 220 cell-treated patients who received mesenchymal (M) SC (n = 152), neural (N) SC (n = 57), or mononuclear cells (MNC: CD34, CD117, and CD133 positive cells) (n = 11). Our analyses indicate that whereas intrathecal injection of mesenchymal stromal cells appears to have a transient positive effect on clinical progression, as measured by the ALS functional rating score, there was a worsening of respiratory function measured by forced vital capacity after all interventions. Based on current evidence, we conclude that optimal cell product and route of administration need to be determined in properly controlled preclinical models before further advancing into ALS patients. In addition, in-depth understanding of disease mechanisms in subsets of patients will help tailoring SC therapy to specific targets and increase the likelihood of improving outcomes.
format article
author Cynthia Morata-Tarifa
Garikoitz Azkona
Jonathan Glass
Letizia Mazzini
Rosario Sanchez-Pernaute
author_facet Cynthia Morata-Tarifa
Garikoitz Azkona
Jonathan Glass
Letizia Mazzini
Rosario Sanchez-Pernaute
author_sort Cynthia Morata-Tarifa
title Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
title_short Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
title_full Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
title_fullStr Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
title_full_unstemmed Looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
title_sort looking backward to move forward: a meta-analysis of stem cell therapy in amyotrophic lateral sclerosis
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/2fbb57f2b2d8490a838bf471fd9df03c
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