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Acute Respiratory Distress Syndrome (ARDS)Phase 1NCT02425579

Safety Study of Inhaled Carbon Monoxide to Treat Acute Respiratory Distress Syndrome (ARDS)

A Phase 1 study testing Inhaled Carbon Monoxide at 100ppm (4 participants) and Inhaled Carbon Monoxide at 200ppm (4 participants) in people with Acute Respiratory Distress Syndrome (ARDS), run by Brigham and Women's Hospital at 4 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to assess the safety of inhaled carbon monoxide (iCO) in intubated patients with sepsis-induced ARDS. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Inhaled Carbon Monoxide at 100ppm (4 participants) and Inhaled Carbon Monoxide at 200ppm (4 participants)
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
12 participants
Where
4 sitesUnited States
Study dates
Apr 2015to Aug 2019
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients with sepsis are defined as those with suspected or documented infection:
  • Suspected or proven infection: Sites of infection include thorax, urinary tract, abdomen, skin, sinuses, central venous catheters, and central nervous system
  • All eligible patients meet the new definition of sepsis (suspected or proven infection and a SOFA ≥ 2) as PaO2/FiO2 ratio < 300 = 2 SOFA points.
  • ARDS is defined when all four of the following criteria are met:
  • A PaO2/FiO2 ratio ≤ 300 with at least 5 cm H2O positive end-expiratory airway pressure (PEEP)
  • Bilateral infiltrates consistent with pulmonary edema on frontal chest radiograph
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  • A need for positive pressure ventilation by an endotracheal or tracheal tube
  • No clinical evidence of left atrial hypertension for bilateral pulmonary infiltrates.
  • ARDS onset is defined as the time the last of criteria 1-4 are met. ARDS must persist through the enrollment time window of 120 hours.
  • Infiltrates considered "consistent with pulmonary edema" include any infiltrates not fully explained by mass, atelectasis, or effusion or opacities known to be chronic (greater than 1 week). Vascular redistribution, indistinct vessels, and indistinct heart borders alone are not considered "consistent with pulmonary edema" and thus would not count as qualifying opacities for this study.

Who cannot join

  • Age less than 18 years
  • Greater than 120 hours since ARDS onset
  • Pregnant or breast-feeding
  • Prisoner
  • Patient, surrogate, or physician not committed to full support (exception: a patient will not be excluded if he/she would receive all supportive care except for attempts at resuscitation from cardiac arrest)
  • No consent/inability to obtain consent
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  • Physician refusal to allow enrollment in the trial
  • Moribund patient not expected to survive 24 hours
  • No arterial line/no intent to place an arterial line
  • No intent/unwillingness to follow lung protective ventilation strategy
  • Severe hypoxemia defined as oxygenation saturation (SpO2) <95 or PaO2 <80 on FiO2 ≥0.8
  • Hemoglobin < 7.5 g/dl or hemoglobin < 8 g/dl and actively bleeding
  • Subjects who are Jehovah's Witnesses or are otherwise unable or unwilling to receive blood transfusions during hospitalization
  • Acute myocardial infarction (MI) or acute coronary syndrome (ACS) within the last 90 days
  • Coronary artery bypass graft (CABG) surgery within 30 days
  • Angina pectoris or use of nitrates with activities of daily living
  • Cardiopulmonary disease classified as New York Heart Association (NYHA) class IV
  • Stroke (ischemic or hemorrhagic) within the prior 3 months
  • Diffuse alveolar hemorrhage from vasculitis
  • Use of high frequency ventilation
  • Participation in other interventional studies involving investigational agents
  • Burns > 40% total body surface area
  • Use of inhaled pulmonary vasodilator therapy (eg. NO or prostaglandins)

Trial locations and contacts

4 sites in 1 country.

United States4 sites
  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115

  • Duke Univesity Hospital

    Durham, North Carolina, 27710

  • Weill Cornell Medical College/NewYork-Presbyterian

    New York, New York, 10065

Other trials in United States

About this study

Official title: A Phase I Trial of Inhaled Carbon Monoxide for the Treatment of Sepsis-Induced Acute Respiratory Distress Syndrome (ARDS)

The purpose of this study is to assess the safety of inhaled carbon monoxide (iCO) in intubated patients with sepsis-induced ARDS.

Read the detailed description

The acute respiratory distress syndrome (ARDS) is a syndrome of severe acute lung inflammation and hypoxemic respiratory failure with an incidence of 180,000 cases annually in the U.S.Despite decades of research and recent advances in lung protective ventilator strategies, morbidity and mortality remain unacceptably high. Furthermore, no specific effective pharmacologic therapies currently exist. The lack of specific effective therapies for sepsis-related ARDS indicates a need for new treatments that target novel pathways. Carbon monoxide (CO) represents a novel therapeutic modality in ARDS based on data obtained in experimental models of ARDS and sepsis over the past decade.

CO has been shown to be protective in experimental models of Acute Lung Injury (ALI), including hyperoxia and endotoxin exposure, bleomycin, ischemia/reperfusion, and ventilator-induced lung injury (VILI). At low doses, CO has been shown to confer tissue protective effects in these ALI models. In addition, CO has been shown to decrease inflammation, enhance phagocytosis, and improve mortality in models of sepsis including endotoxemia, hemorrhagic shock, and cecal ligation and puncture (CLP). CO has also been shown to have beneficial therapeutic effects in pre-clinical models of disease including pulmonary hypertension, vascular injury, and transplantation. Furthermore, multiple human studies have demonstrated that experimental administration of several different concentrations of CO is well tolerated and that low dose inhaled CO can be safely administered to subjects in a controlled research environment.

The purpose of this study is to assess the safety of inhaled CO therapy in mechanically ventilated patients with sepsis-induced ARDS.

Being tested
Inhaled Carbon Monoxide at 100ppm (4 participants), Placebo for Inhaled Carbon Monoxide at 100ppm (2 participants), Inhaled Carbon Monoxide at 200ppm (4 participants), Placebo for Inhaled Carbon Monoxide at 200ppm (2 participants)
Medical subject headings
Respiratory Distress Syndrome

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Inhaled Carbon Monoxide at 100ppm (4 participants)Drug

    Also called iCO

    Inhaled Carbon Monoxide at 100ppm for up to 90 minutes daily for 5 days

  • Placebo for Inhaled Carbon Monoxide at 100ppm (2 participants)Drug

    Also called Inhaled Medical Air

    Inhaled Medical Air for up to 90 minutes daily for 5 days

  • Inhaled Carbon Monoxide at 200ppm (4 participants)Drug

    Also called iCO

    Inhaled Carbon Monoxide at 200ppm for 90 minutes daily for 5 days

  • Placebo for Inhaled Carbon Monoxide at 200ppm (2 participants)Drug

    Also called Inhaled Medical Air

    Inhaled Medical Air for up to 90 minutes daily for 5 days

Study groups in NCT02425579
Study groupRoleWhat they receive
Cohort 1ExperimentalInhaled Carbon Monoxide at 100 ppm for up to 90 minutes daily for 5 days
Receives: Drug: Inhaled Carbon Monoxide at 100ppm (4 participants)
Cohort 1 (placebo)Placebo comparatorInhaled Medical Air for up to 90 minutes daily for 5 days
Receives: Drug: Placebo for Inhaled Carbon Monoxide at 100ppm (2 participants)
Cohort 2ExperimentalInhaled Carbon Monoxide at 200 ppm for up to 90 minutes daily for 5 days
Receives: Drug: Inhaled Carbon Monoxide at 200ppm (4 participants)
Cohort 2 (Placebo)Placebo comparatorInhaled Medical Air for up to 90 minutes daily for 5 days
Receives: Drug: Placebo for Inhaled Carbon Monoxide at 200ppm (2 participants)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of administration associated adverse events.

    1. Acute myocardial infarction (MI) within 48 hours of study drug administration
    2. Acute cerebrovascular accident (CVA) within 48 hours of study drug administration
    3. New onset atrial or ventricular arrhythmia requiring direct current (DC) cardioversion within 48 hours of study drug administration
    4. Increased oxygenation requirements defined as: an increase in fraction of inspired oxygen (FiO2) of greater than or equal to 0.2 AND increase in PEEP greater than or equal to 5 cm of water (H2O) within 6 hours of study drug administration
    5. Increase in any protocol-specified measurement of carboxyhemoglobin (COHb) greater than or equal to 10%
    6. Increase in lactate by greater than or equal to 2 mmol/L within 6 hours of study drug administration

    Measured: 60 Days if remains in the ICU

  2. Incidence of serious adverse events (SAEs).

    An SAE is any event that is fatal or immediately life threatening, is permanently disabling, or severely incapacitating, or requires or prolongs inpatient hospitalization. Important medical events that may not result in death, be life threatening, or require hospitalization may be considered SAEs when, based upon appropriate medical judgment, they may jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the outcomes listed above.

    Measured: 60 Days if remains in the ICU

Secondary outcomes (9)
  1. Comparison between the calculated carboxyhemoglobin (COHb) level at 90 minutes using the Coburn-Forster-Kane (CFK) equation and measured COHb level at 90 minutes

    The Coburn-Forster-Kane (CFK) equation will be used to calculate the estimated COHb level at 90 minutes for Cohorts 1 and 2.

    Measured: 5 days

  2. Mean daily Sequential Organ Failure Assessment (SOFA) score

    Organ failure will be assessed using the SOFA score. SOFA scores will be assessed daily on days 1-5, and day 7, as the SOFA score has been shown to be a reliable prognostic indicator of outcomes in critically ill patients.

    Measured: 7 days

  3. Partial pressure of arterial oxygen (PaO2)/FiO2 ratio

    PaO2/FiO2 will be measured daily on days 1-5 if a subject remains mechanically ventilated.

    Measured: 5 days

  4. Oxygenation index (OI)

    The OI will be measured daily on days 1-5 if a subject remains mechanically ventilated.

    Measured: 5 days

  5. Lung injury score (LIS)

    The LIS is a composite 4-point scoring system including the PaO2/FiO2, PEEP, quasi-static respiratory compliance, and the extent of infiltrates on the chest X-ray. Previous randomized clinical trials in ARDS have shown that a decreased LIS correlates with improvement in lung physiology as well as important clinical outcomes including mortality and ventilator-free days (VFDs).

    Measured: 7 Days

  6. Vasopressor-free days

    Ventilator-free days will be assessed on day 28.

    Measured: 28 days

  7. Ventilator-free days (VFDs)

    Ventilator-free days to day 28 are defined as the number of days from the time of initiating unassisted breathing to day 28 after randomization, assuming survival for at least two consecutive calendar days after initiating unassisted breathing and continued unassisted breathing to day 28. If a subject returns to assisted breathing and subsequently achieves unassisted breathing to day 28, VFDs will be counted from the end of the last period of assisted breathing to day 28.

    Measured: 28 days

  8. ICU-free days

    ICU-free days will be assessed on day 28.

    Measured: 28 days

  9. Hospital-free days

    Hospital-free days will be assessed on day 60.

    Measured: 60 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted24 Apr 2015 (estimated)
  2. Study startApr 2015
  3. Primary completionAug 2019
  4. Study completionAug 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Care provider
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02425579
Sponsor's protocol ID
1408015437
Status last verified
Oct 2019
First submitted
17 Mar 2015
Last updated
17 Oct 2019
Results posted
No
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Fredenburgh LE, Perrella MA, Barragan-Bradford D, Hess DR, Peters E, Welty-Wolf KE, Kraft BD, Harris RS, Maurer R, Nakahira K, Oromendia C, Davies JD, Higuera A, Schiffer KT, Englert JA, Dieffenbach PB, Berlin DA, Lagambina S, Bouthot M, Sullivan AI, Nuccio PF, Kone MT, Malik MJ, Porras MAP, Finkelsztein E, Winkler T, Hurwitz S, Serhan CN, Piantadosi CA, Baron RM, Thompson BT, Choi AM. A phase I trial of low-dose inhaled carbon monoxide in sepsis-induced ARDS. JCI Insight. 2018 Dec 6;3(23):e124039. doi: 10.1172/jci.insight.124039.

    PubMed 30518685

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Inhaled Carbon Monoxide at 100ppm (4 participants) and Inhaled Carbon Monoxide at 200ppm (4 participants) in people with Acute Respiratory Distress Syndrome (ARDS), run by Brigham and Women's Hospital at 4 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 23 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Oct 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of administration associated adverse events. (time frame: 60 Days if remains in the ICU). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02425579, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Oct 2019.

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