Vadadustat for the Prevention and Treatment of Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Patients With Coronavirus Disease 2019 (COVID-19)
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ClinicalTrials.gov Identifier: NCT04478071 |
Recruitment Status :
Completed
First Posted : July 20, 2020
Last Update Posted : February 17, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Acute Respiratory Distress Syndrome Coronavirus Infection | Drug: vadadustat Drug: placebo | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 449 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | Vadadustat for the Prevention and Treatment of Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Patients With Coronavirus Disease 2019 (COVID-19) |
Actual Study Start Date : | August 22, 2020 |
Actual Primary Completion Date : | March 7, 2022 |
Actual Study Completion Date : | March 7, 2022 |

Arm | Intervention/treatment |
---|---|
Experimental: vadadustat |
Drug: vadadustat
Participants will receive vadadustat once daily for 14 days.
Other Name: AKB-6548 |
Placebo Comparator: placebo |
Drug: placebo
Participants will receive matching placebo once daily for 14 days. |
- Number of participants who are classified 8 (dead), 7 (hospitalized, on invasive mechanical ventilation or ECMO), or 6 (hospitalized, on non-invasive ventilation or high flow oxygen devices) on the NIAID ordinal scale [ Time Frame: day 14 ]
National Institute of Allergy and Infectious Disease Ordinal Scale (NIAID-OS):
8 - Death 7 - Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO) 6 - Hospitalized, on non-invasive ventilation or high flow oxygen devices 5 - Hospitalized, requiring supplemental oxygen 4 - Hospitalized, not requiring supplemental oxygen - requiring ongoing care (COVID-19 related or otherwise) 3 - Hospitalized, not requiring supplemental oxygen - no longer requires ongoing medical care 2 - Not hospitalized, limitation on activities and/or requiring home oxygen
1 - Not hospitalized, no limitations on activities
- Number of participants with a total score of 0 on the Modified Sequential Organ Failure Assessment (MSOFA) scale [ Time Frame: day 14 ]
Modified Sequential Organ Failure Assessment (MSOFA) scale:
Each of 5 organ systems is given a score of 0 to 4, as detailed below. The MSOFA scale total score is the sum of the score for the 5 organ systems. Discharged patients will be assigned a score of 0 and dead patients a score of 20.
- Respiratory oxygen saturation(SpO2)/concentration of oxygen that a person inhales(FiO2): 0 (> 400); 1 (≤ 400); 2 (≤ 315); 3 (≤ 235); 4 (≤ 150)
- Liver: 0 (No scleral icterus or jaundice); 3 (Scleral icterus or jaundice)
- Cardiovascular, hypotension: 0 (No hypotension); 1 (MAP < 70 mm Hg); 2 (Dopamine ≤ 5 or dobutamine any dose); 3 (Dopamine > 5, Epinephrine ≤ 0.1, Norepinephrine ≤ 0.1); 4 (Dopamine > 15, Epinephrine > 0.1, Norepinephrine > 0.1)
- Central Nervous System (CNS), Glasgow Coma Score: 0 (15), 1 (13 - 14); 2 (10 - 12); 3 (6 - 9); 4 (< 6)
- Renal, Creatinine mg/dL: 0 (< 1.2); 1 (1.2 - 1.9); 2 (2.0 - 3.4); 3 (3.5 - 4.9); 4 (> 5.0)
- Score on the Modified Sequential Organ Failure Assessment (MSOFA) scale [ Time Frame: day 7 ]
Modified Sequential Organ Failure Assessment (MSOFA) scale:
Each of 5 organ systems is given a score of 0 to 4, as detailed below. The MSOFA scale total score is the sum of the score for the 5 organ systems. Discharged patients will be assigned a score of 0 and dead patients a score of 20.
- Respiratory oxygen saturation(SpO2)/concentration of oxygen that a person inhales(FiO2): 0 (> 400); 1 (≤ 400); 2 (≤ 315); 3 (≤ 235); 4 (≤ 150)
- Liver: 0 (No scleral icterus or jaundice); 3 (Scleral icterus or jaundice)
- Cardiovascular, hypotension: 0 (No hypotension); 1 (MAP < 70 mm Hg); 2 (Dopamine ≤ 5 or dobutamine any dose); 3 (Dopamine > 5, Epinephrine ≤ 0.1, Norepinephrine ≤ 0.1); 4 (Dopamine > 15, Epinephrine > 0.1, Norepinephrine > 0.1)
- Central Nervous System (CNS), Glasgow Coma Score: 0 (15), 1 (13 - 14); 2 (10 - 12); 3 (6 - 9); 4 (< 6)
- Renal, Creatinine mg/dL: 0 (< 1.2); 1 (1.2 - 1.9); 2 (2.0 - 3.4); 3 (3.5 - 4.9); 4 (> 5.0)
- Score on the Modified Sequential Organ Failure Assessment (MSOFA) scale [ Time Frame: day 14 ]
Modified Sequential Organ Failure Assessment (MSOFA) scale:
Each of 5 organ systems is given a score of 0 to 4, as detailed below. The MSOFA scale total score is the sum of the score for the 5 organ systems. Discharged patients will be assigned a score of 0 and dead patients a score of 20.
- Respiratory oxygen saturation(SpO2)/concentration of oxygen that a person inhales(FiO2): 0 (> 400); 1 (≤ 400); 2 (≤ 315); 3 (≤ 235); 4 (≤ 150)
- Liver: 0 (No scleral icterus or jaundice); 3 (Scleral icterus or jaundice)
- Cardiovascular, hypotension: 0 (No hypotension); 1 (MAP < 70 mm Hg); 2 (Dopamine ≤ 5 or dobutamine any dose); 3 (Dopamine > 5, Epinephrine ≤ 0.1, Norepinephrine ≤ 0.1); 4 (Dopamine > 15, Epinephrine > 0.1, Norepinephrine > 0.1)
- Central Nervous System (CNS), Glasgow Coma Score: 0 (15), 1 (13 - 14); 2 (10 - 12); 3 (6 - 9); 4 (< 6)
- Renal, Creatinine mg/dL: 0 (< 1.2); 1 (1.2 - 1.9); 2 (2.0 - 3.4); 3 (3.5 - 4.9); 4 (> 5.0)
- Ventilator-free survival [ Time Frame: day 7 ]
- Ventilator-free survival [ Time Frame: day 14 ]
- Overall survival [ Time Frame: day 7 ]
- Overall survival [ Time Frame: day 14 ]
- Number of participants with hypotension [ Time Frame: day 7 ]Hypotension is defined as Mean Arterial Pressure (MAP) <70 mm Hg or requirement for inotropes or vasopressors to maintain blood pressure.
- Number of participants with hypotension [ Time Frame: day 14 ]Hypotension is defined as Mean Arterial Pressure (MAP) <70 mm Hg or requirement for inotropes or vasopressors to maintain blood pressure.
- Number of participants with acute kidney injury [ Time Frame: day 7 ]
- Number of participants with acute kidney injury [ Time Frame: day 14 ]
- Time to hospital discharge [ Time Frame: From the time of hospital admission to hospital discharge (about 7 days) ]

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Laboratory-confirmed diagnosis of COVID-19 by detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA by Reverse transcription polymerase chain reaction (RT-PCR) from any specimen respiratory
- Admitted to the hospital within 36 hours
- Oxygen saturation of hemoglobin by pulse oximetry at room air ≤94%
- For patients admitted WITH respiratory symptoms, enrollment must occur within 36 hours of hospital admission. If the patient is admitted to the hospital with normal saturations, but develops respiratory symptoms DURING their hospital stay, enrollment may occur within 24 hours of desaturation to 94% or less on room air
- Understands the procedures and requirements of the study and provides written informed consent and authorization for protected health information disclosure
Exclusion Criteria:
- Hypersensitivity to vadadustat or any of its excipients
- Placed on mechanical ventilation before randomization
- Hemoglobin above the gender-specific upper limit of normal (ULN) at randomization: 16 g/dL for females and 18 g/dL for males
- Patients who have erythrocytosis or polycythemia vera
- Patient taking Probenecid, lopinavir or ritonavir
- Women who are pregnant or breastfeeding, or positive pregnancy test before randomization
- Patients not on maintenance dialysis with eGFC < 31 ml/min
- Patients who have received a solid organ transplant, heart, kidney, liver or lung
- Patients who are prisoners
- Patients who are currently Do Not Resuscitate (DNR) or Do Not Intubate (DNI)
- Patients with modified Rankin scale of 3 or greater
- Patient who are currently enrolled in any other interventional clinical trial

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04478071
United States, Texas | |
The University of Texas Health Science Center at Houston | |
Houston, Texas, United States, 77030 |
Principal Investigator: | Bentley J. Bobrow, MD | The University of Texas Health Science Center, Houston |
Responsible Party: | Bentley J. Bobrow, Professor, The University of Texas Health Science Center, Houston |
ClinicalTrials.gov Identifier: | NCT04478071 |
Other Study ID Numbers: |
HSC-MS-20-0395 W81XWH-21-10032 ( Other Grant/Funding Number: United States Department of Defense ) |
First Posted: | July 20, 2020 Key Record Dates |
Last Update Posted: | February 17, 2023 |
Last Verified: | February 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
COVID-19 ARDS |
COVID-19 Coronavirus Infections Respiratory Distress Syndrome Respiratory Distress Syndrome, Newborn Acute Lung Injury Syndrome Disease Pathologic Processes Pneumonia, Viral Pneumonia Respiratory Tract Infections |
Infections Virus Diseases Coronaviridae Infections Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases Respiration Disorders Infant, Premature, Diseases Infant, Newborn, Diseases Lung Injury |