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OBJECTIVES: Severe acute respiratory syndrome coronavirus 2 infections commonly lead to respiratory failure and potentially fatal systemic inflammation and organ failure. Nebulized DAS181, a host-directed biologics with sialidase activity, is an investigational drug with antiviral activities on parainfluenza and influenza under phase 3 and phase 2 development. The objective of this study (NCT04324489) is to investigate the safety and effects of nebulized DAS181 on hypoxic coronavirus disease 2019 patients. DESIGN: Single-center, prospective, open-label, compassionate use. SETTING: Renmin Hospital of Wuhan University, Department of Respiratory and Critical Care Medicine and Department of Infectious Diseases. SUBJECTS: Patients 18 to 70 years old who met Chinese criteria for severe coronavirus disease 2019 pneumonia and required supplemental oxygen but not on mechanical ventilator at screening. INTERVENTIONS: Nebulized DAS181 (4.5 mg) twice a day for 10 days. MEASUREMENTS AND MAIN RESULTS: Three male coronavirus disease 2019 hypoxic patients with bilateral lung involvement completed DAS181 treatment for 10 days. By day 14, all achieved return to room air (primary endpoint) and their nasopharyngeal swabs were negative for severe acute respiratory syndrome coronavirus 2. Clinical severity improved from severe coronavirus disease 2019 at baseline to moderate or mild disease by day 5, consistent with rapid reduction of inflammatory cytokines by days 2–3 and radiologic improvement by days 5–10. No DAS181-related adverse events were reported. CONCLUSIONS: Inhalation of DAS181 was well tolerated and potential clinical benefit of DAS181 on hypoxic coronavirus disease 2019 is the reduction of supplemental oxygen need. Efficacy and safety, including pharmacokinetics and viral studies of DAS181 in severe, hypoxic coronavirus disease 2019, should be examined by a double-blind, randomized controlled study.
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10.1097/cce.0000000000000263
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document_parses/pdf_json/715c5a30ff3a10d7879350ce1b0adc53cbed1b39.json
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document_parses/pmc_json/PMC7587449.xml.json
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Resolution of Coronavirus Disease 2019 Infection and Pulmonary Pathology With Nebulized DAS181: A Pilot Study
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