Recent observations have suggested a role of neutrophil extracellular traps (NETs) in the pathophysiology of severe COVID-19. The aim of the study is to assess efficacy and safety of aerosolized DNase I to remove NETs and decrease respiratory distress in patients with COVID-19.
Study objectives: Primary objective: To compare the treatment effect of aerosolized DNase I to that of placebo (NaCl, 0.9%) on time to cessation of oxygen therapy or discharge from hospital in hospitalized patients with COVID-19 and respiratory dysfunction. Secondary objectives: To compare the treatment effect of aerosolized DNase I to that of placebo (NaCl, 0.9%) on 28-day mortality, days alive and without ventilator treatment, days alive and without high flow nasal oxygen treatment (Optiflow), length of stay in the ICU, days alive and outside hospital, relapse of hypoxia, days alive and without need for supplemental oxygen, adverse reactions. Exploratory objectives: To compare the treatment effect of aerosolized DNase I to that of placebo (NaCl, 9%) on quantification of NETs in respiratory secretions and on the incidence of clinical thromboembolic events. Study design: Phase 2 open-label randomized controlled multicentre trial. The study period is 28 days from randomization. A long term follow-up on mortality and readmission will also be collected via patient medical records/registries at day 90, day 180, and day 360 after randomization.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
76
DNase
NaCl 0.9%, isotonic saline
Lund ED
Lund, Sweden
Time to cessation of oxygen therapy DNase I to that of placebo (NaCl, 0.9%) on time to cessation of oxygen therapy hospitalized patients with COVID-19 and respiratory dysfunction.
Number of Days to cessation of oxygen therapy after start of treatment
Time frame: 28 days
28-day mortality
Number of diseased patients up to 28 Days after start of treatment
Time frame: 28 days
Number of Days alive and without ventilator treatment
Number of Days alive and without ventilator treatment up to 28 Days after start of treatment
Time frame: 28 days
Number of Days alive and without high flow nasal oxygen treatment (Optiflow)
Number of Days alive and without high flow nasal oxygen treatment (Optiflow) up to 28 Days after start of treatment
Time frame: 28 days
Number of Days alive and free of stay in the ICU
Number of Days alive and free of stay in the ICU up to 28 Days after start of treatment
Time frame: 28 days
Number of Days alive and outside hospital
Number of Days alive and outside hospital up to 28 Days after start of treatment
Time frame: 28 days
Number of Days alive and free of a new episode and with oxygen saturation ≤93% after primary endpoint has been met
Number of Days alive and free of a new episode and with oxygen saturation ≤93% after primary endpoint has been met up to 28 Days after start of treatment
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Time frame: 28 days
Number of Days alive and without need of supplemental oxygen
Number of Days alive and without need of supplemental oxygen up to 28 Days after start of treatment
Time frame: 28 days
Number of patients with adverse reactions
Number of patients with adverse reactions reported up to 28 Days after start of treatment
Time frame: 28 days