Clinical trial Recruiting at 1 site Phase2; Phase3 Interventional Ages 18 and up

Vadadustat for nonintubated ARDS caused by infection

Official title: Vadadustat for the Treatment of Nonintubated Acute Respiratory Distress Syndrome Due to Pathogen-Associated Lung Injury

Run by The University of Texas Health Science Center, Houston · NCT07086755 · Data updated 2026-11-12

This study tests if vadadustat can help hospitalized patients with nonintubated ARDS from infection breathe better and avoid needing a ventilator.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment1100 (estimated)
SponsorThe University of Texas Health Science Center, Houston
Academic / other
Locations1 site (Houston, Texas)
StatusRecruiting
StartedOctober 23, 2025
Main results expectedMay 31, 2031
Study endsMay 31, 2031
Registry record updatedAugust 10, 2026
Trial IDNCT07086755 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are hospitalized adults who meet the 2024 definition of nonintubated ARDS with PaO2:FiO2 ≤ 300 mm Hg and suspected or confirmed pathogen-associated lung injury such as pneumonia or non-pulmonary infection.

Probably not a fit

Patients who are already intubated, who do not have infection-associated lung injury, or who have contraindications to vadadustat may not receive benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Hospitalized patients with nonintubated ARDS attributed to a suspected pathogen-associated lung injury are assigned to receive one of two doses of oral vadadustat or placebo. The combined Phase 2/Phase 3 design examines dosing, clinical efficacy, and safety signals. Key outcomes include oxygenation (PaO2:FiO2), progression to mechanical ventilation, clinical status, and adverse events. The trial is led at The University of Texas Health Science Center at Houston in collaboration with Akebia Therapeutics.

Why it matters

Potential benefit: If successful, vadadustat could improve oxygenation and reduce the need for mechanical ventilation in patients with infection-related nonintubated ARDS.

How similar studies have gone: Vadadustat has established use in anemia of chronic kidney disease, but using it to treat ARDS is novel and prior clinical evidence in this indication is limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

-Meets the definition of nonintubated ARDS per the 2024 Global Definition of ARDS that includes all the following (2A-2D):

* 2A. Risk factors and origin of pulmonary edema: Precipitated by an acute predisposing risk factor, specifically from a suspected pathogen-associated etiology such as pneumonia\* or non-pulmonary infection\*\* \[\*Pneumonia defined as known or suspected based on treating physician documentation or discussion, OR both of the following criteria: 1) Chest radiography with new infiltrates, consolidation, or cavitation and (2) Clinical signs of pneumonia (new cough, sputum, fever, or white blood cells (WBC) \> 12,000)\] \[\*\*Non-pulmonary infection defined as suspected or proven infection meeting any of the following criteria: treating clinician suspects a viral, bacterial, or fungal infection, or cultures ordered in the past 24h or positive cultures within 1 week; or orders for antimicrobial medication.\]
* 2B. Oxygenation: PaO2:FIO2 ≤ 300 mm Hg or SpO2:FIO2 ≤ 315 (if SpO2 ≤ 97%) on High-Flow Nasal Oxygen (HFNO) with flow of ≥ 30 L/min or non-invasive ventilation (NIV)/continuous positive airway pressure (CPAP) with at least 5 cm H2O end-expiratory pressure
* 2C. Timing: Acute onset or worsening of hypoxemic respiratory failure within 1 week of the estimated onset of the predisposing risk factor or new or worsening respiratory symptoms.
* 2D. Chest imaging: Chest infiltrates on radiography and computed tomography or B lines and/or consolidations on ultrasound not fully explained by effusions, atelectasis, or nodules/masses.

Exclusion Criteria:

* Hypersensitivity to vadadustat or any of its excipients
* Hemoglobin above the gender-specific upper limit of normal (ULN) at randomization: 16 grams/deciliter (g/dL) for females and 18 g/dL for males
* Patients with Aspartate transferase (AST) or Alanine aminotransferase (ALT) levels \>5 times the upper limit of normal
* Patients with AST or ALT levels \>3 times the upper limit of normal along with a total bilirubin elevation of \>2 times the upper limit of normal.
* Patients who have erythrocytosis or polycythemia vera
* Patients with uncontrolled hypertension
* Patients with active malignancy
* Patients with liver cirrhosis or active, acute liver disease
* Patients taking erythropoiesis-stimulating agents
* Patient taking probenecid, rifampicin, gemfibrozil, or teriflunomide
* Women who are pregnant or breastfeeding, or positive pregnancy test before randomization
* Patients who are prisoners
* Patients who are currently enrolled in any other interventional clinical trial
* Patients who have any prior history of arterial or venous thromboembolism within the past 3 months
* Patients with a history of myocardial infarction, cerebrovascular event, or acute coronary syndrome within the past 3 months
* Patients with known or suspected tuberculosis infection
* Moribund patient not expected to survive 48 hours

Where it's running

  • The University of Texas Health Science Center at Houston
    Houston, Texas, United States
    Recruiting

Study contacts

  • Principal investigator: Paul Potnuru, MD — The University of Texas Health Science Center, Houston
  • Study coordinator: Paul Potnuru, MD
  • Email: Paul.Potnuru@uth.tmc.edu
  • Phone: 713-500-6271

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.