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Could inhaled gas help ventilator patients beat pneumonia?

NCT ID NCT06950294

Disease control Sponsor: Massachusetts General Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-stage trial tests whether high doses of inhaled nitric oxide gas are safe and potentially helpful for critically ill pneumonia patients on breathing machines. About 34 adults will receive either the gas or a sham treatment for 5 days. Researchers will monitor blood oxygen levels and recovery rates over 60 days.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
inhaled nitric oxide gas
What this could lead to
If it works, this could point toward a new treatment to help critically ill pneumonia patients recover faster.
What could go wrong
This is a very early, small pilot study with only 34 participants. It primarily measures safety (methemoglobin levels), not yet proven to improve outcomes. High-dose nitric oxide can cause methemoglobinemia, a blood disorder.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Participants

About 34 people

The number the study aims to enrol. It can still change while the study runs.

Started

Feb 2026

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18 years or older * Intubated and mechanically ventilated * Within 72h of diagnosis of community- or hospital-acquired pneumonia * Written informed consent obtained from patients or legally authorized representatives Exclusion Criteria: * Baseline methemoglobin 3% or higher * Genetic diseases including glucose-6-phosphate dehydrogenase deficiency, cytochrome b5 reductase deficiency, sickle cell disease * Oxygen saturation \< 88% on 100% inspired fraction of oxygen * Anemia with hemoglobin \< 7.0 g/dl * Acute cardiogenic shock requiring inotropic or mechanical support with an ejection fraction less than 20% * Receiving inhaled NO therapy or decision to initiate inhaled NO therapy within 24 hours post randomization * A decision to do-not-resuscitate (DNR) * Enrollment in another experimental antimicrobial treatment protocol * Patients for whom follow-up is expected to be impossible

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Conditions

The condition(s) this trial relates to.

Critical Illness pneumonia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Critical illness Pneumonia

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Massachusetts General Hospital

    RECRUITING

    Boston, Massachusetts, 02114, United States

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