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Clinical Trial Summary

Immunotherapy with chimeric antigen receptor T-cells (CAR-T) has revolutionized the treatment of oncohematological diseases and its applications in solid tumors and non-neoplastic diseases are advancing. Cytopenias after CAR-T therapy are the most frequent complication in the medium and long term after treatment, they are a cause of morbimortality, and there are no effective therapies available. The general objective of the present research project is to analyze, in a series of 40 patients with diffuse large B-cell lymphoma undergoing consecutive commercial CAR-T therapy at the University Hospital of Salamanca, the characteristics of the hematopoietic niche and the systemic and bone marrow inflammatory status in patients with prolonged cytopenias after CAR-T cell therapy with respect to those without cytopenias and with respect to the pre-treatment situation (performing quantitative and functional analysis of the stroma by immunohistochemistry, flow cytometry and genomic studies, in addition to functional hematopoietic assays-clonogenic assays, long-term cultures-), and to evaluate both in vitro (by co-culturing with macrophages activated by CAR-T/tumor cell interaction and assessing cytokines) and in vivo (in an animal model of lymphoma and CRS) the therapeutic potential of therapies aimed at repairing the hematopoietic bone marrow microenvironment, such as the use of allogeneic mesenchymal cells (MSC) from healthy donors and MSC-derived extracellular vesicles (MSC-EV) studying their effects on inflammatory mediators, hematopoiesis and the cytotoxic effect of CAR-T.


Clinical Trial Description

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Study Design


Related Conditions & MeSH terms


NCT number NCT06439173
Study type Observational
Source Instituto de Investigación Biomédica de Salamanca
Contact Fermín Sánchez-Guijo Martín, PhD MD
Phone +34 923 291384
Email ferminsg@usal.es
Status Recruiting
Phase
Start date January 1, 2024
Completion date December 31, 2026

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