The phase I RELEASE clinical trial to evaluate the safety of NK cells in COVID-19
Summary: The severity of COVID 19 symptoms has a direct correlation with lymphopenia, affecting natural killer (NK) cells. SARS-CoV-2 specific “memory” NK cells obtained from convalescent donors can be used as cell immunotherapy. In 2022 a phase I, dose-escalation, single center clinical trial was c...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-02-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004224029250 |
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| Summary: | Summary: The severity of COVID 19 symptoms has a direct correlation with lymphopenia, affecting natural killer (NK) cells. SARS-CoV-2 specific “memory” NK cells obtained from convalescent donors can be used as cell immunotherapy. In 2022 a phase I, dose-escalation, single center clinical trial was conducted to evaluate the safety and feasibility of the infusion of CD3−/CD56+ NK cells against moderate/severe cases of COVID-19 (NCT04578210). Six participants with pneumonia and/or lymphopenia were infused. Four patients received a single-dose infusion of NK cells of 1×106/kg, and the following two patients a dose of 2×106/kg of NK cells. All participants’ clinical status and inflammation markers were monitored. No serious adverse events were reported after infusion. Exploratory outcomes included the donor chimerism, NK-cell immunophenotype evolution, and immune lymphocyte reconstitution. This study provides preliminary evidence supporting the idea that treatment of COVID-19 patients with moderate/severe symptoms using NK from COVID-19 convalescent donors is feasible and safe. |
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| ISSN: | 2589-0042 |