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Vitamin B3 supplement studied for rare lung condition

NCT ID NCT07563322

Knowledge-focused Sponsor: Vanderbilt University Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study tests whether nicotinamide riboside, a form of vitamin B3, can improve how cells produce energy in people with combined pulmonary hypertension (CPH). CPH is a serious lung and heart condition with no approved treatments. Ten participants will receive both the supplement and a placebo at different times to see how it affects biological markers in the body.

What this could mean

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

Active substance
nicotinamide riboside (a form of vitamin B3)
What this could lead to
If it works, this could point toward a new way to support cell energy in people with combined pulmonary hypertension, but it is not a treatment test.
What could go wrong
This is a very small, early study with only 10 people. It looks at biological markers, not symptoms or survival, so even positive results may not lead to a real treatment.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 10 people

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

Started

Apr 2026

Expected to finish

Jul 2027

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 to 85 years

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: * Aged \>/= 18 to 85 years of age * Diagnosis of Combined pre-/post-capillary PH (CPH) defined as mean pulmonary artery pressure \>20mmHg, pulmonary capillary wedge pressure \>15mmHg, and pulmonary vascular resistance ³3 Wood units * NYHA Class I - III * A qualifying Baseline RHC performed within 2 years of consent Clinical echocardiogram within the prior year with LVEF\>/= 45% * Stable PH-specific and/or HF medication regimen and ≤1 diuretic adjustment within the three months prior to enrollment. * Ambulatory - able to perform the walk test Exclusion Criteria: * Pulmonary hypertension due to congenital heart disease, connective tissue disease, or heritable pulmonary arterial hypertension * Prohibited from regular activity due to wheelchair bound status, bed-bound status, reliance on a cane/walker, activity-limiting angina, activity-limiting osteoarthritis, or other conditions that limit activity * Pregnancy * Drug and toxin-associated PAH patients with active drug use * Prior or active diagnosis of cirrhosis * Active Malignancy * Patients with evidence of moderate to severe hepatic impairment, defined as Child-Pugh Class B or C, or with alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels greater than 3 times the upper limit of normal (ULN), should be excluded * eGFR by MDRD \<30mL/mi * FEV1\< 60% predicted with more than mild abnormalities on lung imaging Current enrollment in or completion of any other investigational product study within 30 days of Screening. * Hospitalization for any indication within 30 days of Day 1. * History of severe allergic or anaphylactic reaction or hypersensitivity to NR * No known mutation in NDUFB7

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Conditions

The condition(s) this trial relates to.

pulmonary hypertension

As listed by the trial registrant

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

Pulmonary hypertension

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

  • Vanderbilt University Medical Center

    RECRUITING

    Nashville, Tennessee, 37203, United States

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