Investigating immune cell and microbiome interactions in ARDS patients

Pulmonary Immune Cell-microbiome Interactions in Acute Respiratory Distress Syndrome: the ILLUMINA-1 Study

Observational Hvidovre University Hospital · NCT05795257

This study looks at how immune cells and gut bacteria interact in critically ill patients with acute respiratory distress syndrome (ARDS) to see if these factors affect how serious their condition is.

Quick facts

Study typeObservational
Enrollment40 (estimated)
Ages18 Years and up
SexAll
SponsorHvidovre University Hospital Academic / other
Locations1 site (Hvidovre)
Trial IDNCT05795257 on ClinicalTrials.gov

What this trial studies

This observational study aims to analyze the immune cell populations and their activation patterns, the cytokine-chemokine environment, and the lung microbiome in critically ill ICU patients with acute respiratory distress syndrome (ARDS). It will involve collecting bronchoalveolar lavage fluid and blood samples from patients categorized into none-to-mild and moderate-to-severe ARDS groups. The study seeks to understand how these factors relate to disease severity and progression, particularly focusing on T cell behavior and the microbiome's role in ARDS. Data will be collected within 72 hours of intubation and again after 7-10 days if the patient remains intubated.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older who are intubated within 72 hours and diagnosed with either moderate-to-severe or none-to-mild ARDS.

Not a fit: Patients with ARDS caused by COVID-19 or those with contraindications for bronchoscopy will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and management of ARDS, potentially enhancing patient outcomes.

How similar studies have performed: While the specific interactions between immune cells and the microbiome in ARDS have not been extensively studied, related research in other conditions has shown promising results.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Inclusion criteria - moderate-to-severe ARDS
* Admitted to the ICU at Hvidovre Hospital
* Intubated within the past 72 hours
* Moderate-to-severe ARDS according to the Berlin definition19
* Age ≥ 18 years

Inclusion criteria - none-to-mild ARDS

* Admitted to the ICU at Hvidovre Hospital
* Intubated within the past 72 hours
* None-to-mild ARDS according to the Berlin definition19
* Age ≥ 18 years

Exclusion Criteria:

* ARDS caused by COVID-19
* Absolute contraindications for bronchoscopy
* Untreated malignant arrhythmia
* Documented or suspected intracranial hypertension (intracranial pressure ≥ \> 15 mmHg)
* One-lung ventilation
* Severe coagulopathy

Where this trial is running

Hvidovre

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 ARDS, Human
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.