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Interferon gamma immunotherapy in five critically ill COVID-19 patients with impaired cellular immunity: a case series.


ABSTRACT:

Background

Prolonged SARS-CoV-2 shedding has been described in immunocompromised COVID-19 patients, resulting in protracted disease and poor outcome. Specific therapy to improve viral clearance and outcome for this group of patients is currently unavailable.

Methods

Five critically ill COVID-19 patients with severe defects in cellular immune responses, high SARS-CoV-2 viral RNA loads, and no respiratory improvement were treated with interferon gamma, 100 μg subcutaneously, thrice weekly. Bronchial secretion was collected every 48 hours for routine diagnostic SARS-CoV-2 RT-PCR and viral culture.

Findings

Interferon gamma administration was followed by a rapid decline in SARS-CoV-2 load and a positive to negative viral culture conversion. Four patients recovered and no signs of hyperinflammation were observed.

Conclusions

Interferon gamma may be considered as adjuvant immunotherapy in a subset of immunocompromised COVID-19 patients.

Funding

AvL and RvC are supported by National Institute of Health [R01AI145781]. GJO and RPvR are supported by a VICI grant [016.VICI.170.090] from the Dutch Research Council (NWO). WFA is supported by Clinical Fellowship grant [#9071561]) of Netherlands Organization for Health Research and Development. MGN is supported by an ERC Advanced Grant [#833247] and a Spinoza Grant of the Netherlands Organization for Scientific Research.

SUBMITTER: van Laarhoven A 

PROVIDER: S-EPMC8452508 | biostudies-literature |

REPOSITORIES: biostudies-literature

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