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Mechanistic Study of Nicotinamide Riboside on NAD+ Biology in Individuals With Combined Pulmonary Hypertension

NCT07563322 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2026-05-04

No results posted yet for this study

Summary

Pulmonary hypertension (PH) is a serious condition that puts strain on the heart and lungs and often leads to frequent hospital stays and shortened life expectancy. The most common cause is heart disease affecting the left side of the heart. A particularly high-risk form, called combined pre- and post-capillary pulmonary hypertension (CPH), occurs in about one in four people with heart failure. There are currently no approved treatments for CPH, and many patients develop right-sided heart failure and die earlier than expected.

This study is based on a new approach that uses advanced computer methods to analyze a patient's unique biology and identify potential drug targets. Using this method, we identified nicotinamide riboside (NR) as a promising option for people with CPH. NR is a form of vitamin B3 that helps the body make NAD⁺, a substance essential for how cells produce energy and stay healthy. NAD⁺ plays an important role in how heart and blood vessel cells function.

Previous research in animals suggests NR may help improve blood vessel changes in the lungs and support heart function. NR has also shown potential benefits in human studies related to cell energy, mitochondrial health, and reducing oxidative stress. In this study, NR is used only as a dietary supplement that supports normal body processes, not as a proven treatment.

The investigators will conduct a small, carefully controlled study in which participants receive NR and a placebo at different times. The goal is to understand how NR affects biological and biochemical markers in the body, not to test whether it improves symptoms or outcomes. Any clinical measurements are included only to help interpret the biological effects.

Conditions

  • Pulmonary Hypertension

Interventions

DIETARY_SUPPLEMENT

Nicotinamide Riboside (NR)

Participants will be randomized to receive either 1000mg NR Daily or a placebo for 6 weeks, followed by a 3-week washout period. After this, they will receive the alternate treatment for an additional 6 weeks.

DRUG

Placebo

Participants will be randomized to receive either NR or a placebo for 6 weeks, followed by a 3-week washout period. After this, they will receive the alternate treatment for an additional 6 weeks.

Sponsors & Collaborators

Principal Investigators

  • Evan L Brittain, MD · VUMC

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-09
Primary Completion
2027-04-30
Completion
2027-07-30

Countries

  • United States

Study Locations

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Entities

Drugs
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07563322 on ClinicalTrials.gov