Using Pirfenidone to prevent lung fibrosis in ARDS patients

Pirfenidone to Prevent Fibrosis in ARDS. A Randomized Controlled Trial - PIONEER

Phase 3 Interventional Università Vita-Salute San Raffaele · NCT05075161

This study tests if the drug Pirfenidone can help prevent lung scarring in patients with Acute Respiratory Distress Syndrome (ARDS).

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment130 (estimated)
Ages18 Years and up
SexAll
SponsorUniversità Vita-Salute San Raffaele Academic / other
Locations17 sites (Milan, MI and 16 other locations)
Trial IDNCT05075161 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the efficacy of Pirfenidone, an antifibrotic drug, in patients with Acute Respiratory Distress Syndrome (ARDS). The study aims to determine if Pirfenidone can reduce the development of pulmonary fibrosis, a common complication following ARDS. Participants will be randomly assigned to receive either Pirfenidone or a placebo while being monitored for improvements in lung function and overall recovery. The trial focuses on patients who meet specific criteria for ARDS and have inflammatory characteristics.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older who have been diagnosed with moderate to severe ARDS within one week of a clinical insult.

Not a fit: Patients who have been intubated and mechanically ventilated for more than seven days or those with ARDS lasting longer than 36 hours may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce the incidence of pulmonary fibrosis in ARDS patients, improving long-term outcomes.

How similar studies have performed: While other studies have explored treatments for ARDS, the use of Pirfenidone specifically for this condition is novel and has not been extensively tested in clinical settings.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Concomitant presence of:

* ARDS (moderate and severe) - Berlin definition

  1. Within 1 week of a known clinical insult or new or worsening respiratory symptoms
  2. Bilateral opacities on CXR which are not fully explained by effusions, lobar/lung collapse or nodules
  3. Respiratory failure not fully explained by cardiac failure or fluid overload
  4. PaO2/FiO2\<200 mmHg with PEEP\<=5 cmH2O (invasive mechanical ventilation)
* Inflammatory ARDS phenotype (28), defined by at least one of the following:

  1. High plasma levels of inflammatory biomarkers
  2. Vasopressor dependence
  3. Lower serum bicarbonate or increased serum lactate
* Informed consent expressed by the patient or by legal representative or on the Ethical Committee indication.
* Age \>=18 years

Exclusion Criteria:

* Intubated and mechanically ventilated via an endotracheal or tracheostomy tube (\>7 days) up to the time of randomization
* ARDS severe or moderate for more than 36 hours
* Untreated pulmonary embolism, pleural effusion or pneumothorax as the primary cause of ARF
* ARF fully explained by left ventricular failure or fluid overload
* Consent declined
* Severe chronic respiratory disease requiring domiciliary ventilation
* Clinical suspicion for significant restrictive lung disease
* Pregnant women or women of childbearing potential who are sexually active
* Known allergy to pirfenidone
* Concomitant use of fluvoxamine
* Known severe hepatic failure
* Known severe renal failure or necessity of dialysis not related to acute disease
* Little chance of survival (SAPS II score\>75)

Where this trial is running

Milan, MI and 16 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Acute Respiratory Distress SyndromeARDSPulmonary FibrosisMechanical VentilationAntifibrotic drugIntensive Care UnitICU dischargeMortality
Last reviewed 2026-06-13 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.