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vadadustat

Phase 2

Acute Respiratory Distress Syndrome | Small molecule | Infectious Disease |United Therapeutics Corporation|Last Updated: Mar 26, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment448

FDA Designations

No designations recorded

Clinical trial landscape

vadadustat · 1 trial · 2 indications

Phase 2 1
NCT04478071Vadadustat for the Prevention and Treatment of Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Patients With Coronavirus Disease 2019 (COVID-19)Acute Respiratory Distress Syndrome
COMPLETED448 Analytics
PHASE2COMPLETED
Vadadustat for the Prevention and Treatment of Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Patients With Coronavirus Disease 2019 (COVID-19)
Acute Respiratory Distress SyndromeUnlock trial analytics

Study Endpoints

Primary Endpoints

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
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

Secondary Endpoints

Number of Participants With a Total Score of 0 on the Modified Sequential Organ Failure Assessment (MSOFA) Scale
day 14
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
vadadustatEXPERIMENTAL -
placeboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
vadadustatDRUGParticipants will receive vadadustat once daily for 14 days.
placeboDRUGParticipants will receive matching placebo once daily for 14 days.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

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 ...

Countries:United States
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Frequently asked questions about vadadustat

What is vadadustat used for in Acute Respiratory Distress Syndrome?

Vadadustat is an investigational small molecule being studied for the prevention and treatment of Acute Respiratory Distress Syndrome (ARDS) in hospitalized patients with COVID-19. It is in Phase 2 clinical development and is not approved by the FDA. The completed trial enrolled 448 participants in the United States.

How does vadadustat work?

Vadadustat is a small molecule that targets hypoxia-inducible factor prolyl hydroxylase, an enzyme involved in cellular oxygen sensing. By inhibiting this target, it stabilizes hypoxia-inducible factor, which may help regulate inflammatory and protective pathways relevant to ARDS. This mechanism is being evaluated in the context of COVID-19-related lung injury.

Who makes vadadustat?

Vadadustat is being developed by United Therapeutics Corporation, a biopharmaceutical company listed on NASDAQ under the ticker UTHR. The company is conducting clinical research to evaluate the drug's potential in Acute Respiratory Distress Syndrome associated with COVID-19.

What phase is vadadustat in?

Vadadustat is in Phase 2 clinical development for Acute Respiratory Distress Syndrome. It is an investigational drug and has not been approved by the FDA. One Phase 2 trial has been completed, and the drug is not currently in active clinical trials for this indication.

What clinical trials is vadadustat in?

Vadadustat has one completed clinical trial, NCT04478071, titled 'Vadadustat for the Prevention and Treatment of Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Patients With Coronavirus Disease 2019 (COVID-19)'. This Phase 2, randomized, double-blind, placebo-controlled study enrolled 448 participants in the United States.

Is vadadustat the same as any other drug?

Vadadustat is also known by the brand name Vafseo, which is approved in some regions for anemia due to chronic kidney disease. However, for the Acute Respiratory Distress Syndrome indication, it remains investigational and is being studied under the name vadadustat.