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Could Plant-Based meals boost gut health during transplant?

NCT ID NCT06559709

Knowledge-focused Sponsor: Fred Hutchinson Cancer Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This pilot study tested whether a plant-based whole-foods meal delivery service is practical for multiple myeloma patients receiving an autologous stem cell transplant. The goal was to see if patients would eat the meals and if it could improve gut microbiome diversity, which is often lost during transplant and linked to worse outcomes. The study enrolled 26 patients and measured enrollment rates, sample collection rates, and how well patients tolerated the diet.

What this could mean

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

Active substance
plant-based whole-foods meal delivery service
What this could lead to
If successful, this could show that a plant-based diet is a practical way to support gut health during stem cell transplant for multiple myeloma.
What could go wrong
This is a very small pilot study (26 people) focused on feasibility, not on proving health benefits. It may not show clear results or be generalizable.

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

26 people

The number who actually took part.

Started

Oct 2024

Finished

Aug 2025

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: * Able to provide written informed consent prior to initiation of any study procedures * Planned first autologous stem cell transplantation for multiple myeloma * Planned outpatient treatment for the duration of transplantation (if admitted, the investigators will request that caregivers bring the meals/snacks to the hospital as they might with other food prepared at home) * Access to a refrigerator * Ability to reheat foods * Able to consume an oral diet at enrollment * Able to communicate clearly regarding aspects of the study: e.g. Give feedback on logistics and meals, in order to maximize the operational data the investigators can gather in this pilot study * At least 18 years of age Exclusion Criteria: * Major psychiatric diagnosis that impairs cognitive functioning or is not controlled at the time of the approach, as judged by the patient's medical team * Planned inpatient transplantation

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Conditions

The condition(s) this trial relates to.

plasma cell myeloma

As listed by the trial registrant

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

Multiple myeloma

Contacts and locations

Locations

  • Fred Hutch/University of Washington Cancer Consortium

    Seattle, Washington, 98109, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.