Recombinant Human Angiotensin-converting Enzyme 2 (rhACE2) as a Treatment for Patients With COVID-19
- Conditions
- COVID-19
- Interventions
- Drug: Recombinant human angiotensin-converting enzyme 2 (rhACE2)
- Registration Number
- NCT04287686
- Lead Sponsor
- The First Affiliated Hospital of Guangzhou Medical University
- Brief Summary
This is an open label, randomized, controlled, pilot clinical study in patients with COVID-19, to obtain preliminary biologic, physiologic, and clinical data in patients with COVID-19 treated with rhACE2 or control patients, to help determine whether a subsequent Phase 2B trial is warranted.
- Detailed Description
This is a small pilot study investigating whether there is any efficacy signal that warrants a larger Phase 2B trial, or any harm that suggests that such a trial should not be done. It is not expected to produce statistically significant results in the major endpoints. The investigators will examine all of the biologic, physiological, and clinical data to determine whether a Phase 2B trial is warranted.
Primary efficacy analysis will be carried only on patients receiving at least 4 doses of active drug. Safety analysis will be carried out on all patients receiving at least one dose of active drug.
It is planned to enroll more than or equal to 24 subjects with COVID-19. It is expected to have at least 12 evaluable patients in each group.
Experimental group: 0.4 mg/kg rhACE2 IV BID and standard of care Control group: standard of care
Intervention duration: up to 7 days of therapy
No planned interim analysis.
Recruitment & Eligibility
- Status
- WITHDRAWN
- Sex
- All
- Target Recruitment
- Not specified
-
Laboratory diagnosis:
- Respiratory specimen is positive for SARS-CoV-2 nucleic acid by RT-PCR; OR,
- The viral gene sequencing of the respiratory specimen is highly homologous to known novel coronavirus.
-
Fever:
Axillary temperature >37.3℃
-
Respiratory variables (meets one of the following criteria):
- Respiratory rate: RR ≥25 breaths/min
- Oxygen saturation ≤93% at rest on room air
- PaO2/FiO2 ≤300 mmHg（1 mmHg=0.133 KPa）
- Pulmonary imaging showed that the lesions progressed more than 50% within 24-48 hours, and the patients were managed as severe
-
HBsAg negative, or HBV DNA ≤10^4 copy/ml if HBsAg positive; anti-HCV negative; HIV negative two weeks prior to signed Informed Consent Form (ICF)
-
Appropriate ethics approval and
-
ICF
- Age <18 years; Age >80 years
- Pregnant or breast feeding woman or with positive pregnancy test result
- P/F <100 mmHg
- Moribund condition (death likely in days) or not expected to survive for >7 days
- Refusal by attending MD
- Not hemodynamically stable in the preceding 4 hours (MAP ≤65 mmHg, or SAP <90 mmHg, DAP <60 mmHg, vasoactive agents are required)
- Patient on invasive mechanical ventilation or ECMO
- Patient in other therapeutic clinical trial within 30 days before ICF
- Receive any other ACE inhibitors (ACEI), angiotensin-receptor blockers (ARB) treatment within 7 days before ICF
- Chronic immunosuppression: current autoimmune diseases or patients who received immunotherapy within 30 days before ICF
- Hematologic malignancy (lymphoma, leukemia, multiple myeloma)
- Other patient characteristics (not thought to be related to underlying COVID-19) that portend a very poor prognosis (e.g, severe liver failure, and ect)
- Known allergy to study drug or its ingredients related to renin-angiotensin system (RAS), or frequent and/or severe allergic reactions with multiple medications
- Other uncontrolled diseases, as judged by investigators
- Body weight ≥85 kg
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description rhACE2 group Recombinant human angiotensin-converting enzyme 2 (rhACE2) 0.4 mg/kg IV BID for 7 days (unblinded) + standard of care
- Primary Outcome Measures
Name Time Method Time course of body temperature (fever) 14 days Compare the time course of body temperature (fever) between two groups over time.
Viral load over time 14 days Compare viral load between two groups over time.
- Secondary Outcome Measures
Name Time Method Tumor necrosis factor-α (TNF-α) changes over time 14 days Renin changes over time 14 days Angiotensin-converting enzyme (ACE) changes over time 14 days Interleukin 6 (IL-6) changes over time 14 days Von willebrand factor (vWF) changes over time 14 days Surfactant protein-D (SP-D) changes over time 14 days Angiopoietin-2 changes over time 14 days Image examination of chest over time 14 days Based on radiologist's assessment of inflammatory exudative disease, category as follows: significant improvement, partial improvement, no improvement, increase of partial exudation, significant increase in exudation, unable to judge.
Angiotensin-converting enzyme 2 (ACE2) changes over time 14 days Frequency of adverse events and severe adverse events 14 days Soluble receptor for advanced glycation end products (sRAGE) changes over time 14 days P/F ratio over time 14 days PaO2/FiO2 ratio
Sequential organ failure assessment score(SOFA score) over time 14 days SOFA, including assessment of respiratory, blood, liver, circulatory, nerve, kidney, from 0 to 4 scores in each systems, the higher scores mean a worse outcome.
Pulmonary Severity Index (PSI) 14 days Angiotensin II (Ang II) changes over time 14 days C-reactive protein levels over time 14 days Proportion of subjects who progressed to critical illness or death 14 days Time from first dose to conversion to normal or mild pneumonia 14 days T-lymphocyte counts over time 14 days Angiotensin 1-7 (Ang 1-7) changes over time 14 days Angiotensin 1-5 (Ang 1-5) changes over time 14 days Aldosterone changes over time 14 days Interleukin 8 (IL-8) changes over time 14 days Soluble tumor necrosis factor receptor type II (sTNFrII) changes over time 14 days Plasminogen activator inhibitor type-1 (PAI-1) changes over time 14 days
Trial Locations
- Locations (1)
GCP Office of The First Affiliated Hospital of Guangzhou Medical University
🇨🇳Guangzhou, Guangdong, China