Journal
STEM CELLS TRANSLATIONAL MEDICINE
Volume 9, Issue 1, Pages 6-16Publisher
OXFORD UNIV PRESS
DOI: 10.1002/sctm.19-0037
Keywords
adult human bone marrow; adult stem cells; bone marrow stromal cells; cellular therapy; clinical trials; lung; stem cell transplantation; transplantation tolerance
Categories
Funding
- FMBA of Russia Government [20.001.13.800]
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Previous phase I studies demonstrated safety and some beneficial effects of mesenchymal stem cells (MSCs) in patients with mild to moderate idiopathic pulmonary fibrosis (IPF). The aim of our study was to evaluate the safety, tolerability, and efficacy of high cumulative dose of bone marrow MSCs in patients with rapid progressive course of severe to moderate IPF. Twenty patients with forced ventilation capacity (FVC) >= 40% and diffusing capacity of the lung for carbon monoxide (DLCO) >= 20% with a decline of both >10% over the previous 12 months were randomized into two groups: one group received two intravenous doses of allogeneic MSCs (2 x 10(8) cells) every 3 months, and the second group received a placebo. A total amount of 1.6 x 10(9) MSCs had been administered to each patient after the study completion. There were no significant adverse effects after administration of MSCs in any patients. In the group of MSC therapy, we observed significantly better improvement for the 6-min walk distance in 13 weeks, for DLCO in 26 weeks, and for FVC in 39 weeks compared with placebo. FVC for 12 months in the MSCs therapy group increased by 7.8% from baseline, whereas it declined by 5.9% in the placebo group. We did not find differences between the groups in mortality (two patients died in each group) or any changes in the high-resolution computed tomography fibrosis score. In patients with IPF and a rapid pulmonary function decline, therapy with high doses of allogeneic MSCs is a safe and promising method to reduce disease progression.
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