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Could a common vitamin speed up stem cell recovery?

NCT ID NCT04332341

Disease control Sponsor: Case Comprehensive Cancer 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 07, 2026 · Updated 2 times

Summary

This study tests whether a vitamin B3 supplement called nicotinamide riboside (NR) is safe and tolerable for people receiving a donor stem cell transplant. The goal is to see if NR can help the new stem cells settle in faster and reduce recovery time. About 20 participants will take NR daily, and researchers will monitor side effects and blood cell recovery.

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 20 people

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

Started

May 2020

Expected to finish

Sep 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: * All disease indications for allogeneic hematopoietic cell transplantation except for myelofibrosis. * Subject must meet program eligibility criteria\* for myeloablative conditioning alloHCT and plan to undergo myeloablative conditioning. * HLA-identical related donor or unrelated human donor source with bone marrow graft. * Subjects must provide a written informed consent. Exclusion Criteria: * History of allergy or intolerance to NR precursor compounds, including niacin or nicotinamide * Pregnant or breastfeeding women are excluded from this study since allogeneic HCT is a strict contraindication. * Subjects with uncontrolled intercurrent illness or psychiatric illness/social situations that would limit compliance with study requirements.

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As listed by the trial registrant

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

Allogeneic hematopoietic cell transplantation

How to take part

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

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

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

  3. 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 ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Cleveland Clinic, Case Comprehensive Cancer Center

    RECRUITING

    Cleveland, Ohio, 44195, United States

    Contact Email: •••••@•••••

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