PMID- 33277427 OWN - NLM STAT- MEDLINE DCOM- 20211012 LR - 20211012 IS - 2332-7812 (Electronic) IS - 2332-7812 (Linking) VI - 8 IP - 1 DP - 2021 Jan TI - Mesenchymal stem cell-derived neural progenitors in progressive MS: Two-year follow-up of a phase I study. LID - 10.1212/NXI.0000000000000928 [doi] LID - e928 AB - OBJECTIVE: To determine the long-term safety and efficacy of repeated intrathecal (IT) administration of autologous mesenchymal stem cell-derived neural progenitors (MSC-NPs) in patients with progressive MS by evaluating subjects 2 years after treatment. METHODS: Twenty subjects were enrolled as part of a phase I, open-label single-arm study of 3 IT injections of MSC-NPs spaced 3 months apart. Subjects were evaluated for adverse events and disability outcomes including the Expanded Disability Status Scale (EDSS) and the timed 25-foot walk (T25FW). Long-term evaluation was conducted 2 years after the third treatment. CSF was collected before and 3 months after treatment. RESULTS: Eighteen of the 20 study participants completed the full 2-year follow-up protocol. There were no long-term adverse events associated with repeated IT-MSC-NP treatment. Seven subjects showed sustained improvement in EDSS after 2 years, although the degree of improvement was not maintained in 5 of the subjects. Three of the 10 ambulatory subjects showed sustained improvement in the T25FW after 2 years. CSF biomarker analysis revealed a decrease in C-C motif chemokine ligand 2 (CCL2) and an increase in interleukin 8, hepatocyte growth factor, and C-X-C motif chemokine ligand 12 (CXCL12) after treatment. CONCLUSIONS: Safety and efficacy of repeated IT-MSC-NP treatment was sustained for 2 years; however, the degree of disability reversal was not sustained in a subset of patients. CSF biomarkers altered in response to IT-MSC-NP treatment may reflect specific immunoregulatory and trophic mechanisms of therapeutic response in MS. CLASSIFICATION OF EVIDENCE: This study provides Class IV evidence that for patients with progressive MS, IT administration of MSC-NPs is safe and effective. The study is rated Class IV because of the absence of a non-IT-MSC-NP-treated control group. CLINICALTRIALSGOV IDENTIFIER: NCT01933802. CI - Copyright (c) 2020 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology. FAU - Harris, Violaine K AU - Harris VK AUID- ORCID: 0000-0002-3057-3059 AD - From the Tisch Multiple Sclerosis Research Center of New York. FAU - Stark, James W AU - Stark JW AD - From the Tisch Multiple Sclerosis Research Center of New York. FAU - Yang, Sophia AU - Yang S AD - From the Tisch Multiple Sclerosis Research Center of New York. FAU - Zanker, Shayna AU - Zanker S AD - From the Tisch Multiple Sclerosis Research Center of New York. FAU - Tuddenham, John AU - Tuddenham J AD - From the Tisch Multiple Sclerosis Research Center of New York. FAU - Sadiq, Saud A AU - Sadiq SA AD - From the Tisch Multiple Sclerosis Research Center of New York. ssadiq@tischms.org. LA - eng SI - ClinicalTrials.gov/NCT01933802 PT - Clinical Trial, Phase I PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201204 PL - United States TA - Neurol Neuroimmunol Neuroinflamm JT - Neurology(R) neuroimmunology & neuroinflammation JID - 101636388 RN - 0 (CCL2 protein, human) RN - 0 (CXCL12 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CXCL12) RN - 0 (HGF protein, human) RN - 0 (Interleukin-8) RN - 67256-21-7 (Hepatocyte Growth Factor) SB - IM MH - Adult MH - Aged MH - Chemokine CCL2/cerebrospinal fluid MH - Chemokine CXCL12/cerebrospinal fluid MH - Female MH - Follow-Up Studies MH - Hepatocyte Growth Factor/cerebrospinal fluid MH - Humans MH - Injections, Spinal MH - Interleukin-8/cerebrospinal fluid MH - Male MH - Mesenchymal Stem Cell Transplantation/*methods MH - Middle Aged MH - Multiple Sclerosis, Chronic Progressive/*therapy MH - Neural Stem Cells/*transplantation MH - Transplantation, Autologous PMC - PMC7738177 EDAT- 2020/12/06 06:00 MHDA- 2021/10/13 06:00 PMCR- 2020/12/04 CRDT- 2020/12/05 05:27 PHST- 2020/07/16 00:00 [received] PHST- 2020/10/14 00:00 [accepted] PHST- 2020/12/05 05:27 [entrez] PHST- 2020/12/06 06:00 [pubmed] PHST- 2021/10/13 06:00 [medline] PHST- 2020/12/04 00:00 [pmc-release] AID - 8/1/e928 [pii] AID - NEURIMMINFL2020033779 [pii] AID - 10.1212/NXI.0000000000000928 [doi] PST - epublish SO - Neurol Neuroimmunol Neuroinflamm. 2020 Dec 4;8(1):e928. doi: 10.1212/NXI.0000000000000928. Print 2021 Jan.