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Could a Plant-Based diet stop a blood cancer before it starts?

NCT ID NCT04920084

Prevention Sponsor: Memorial Sloan Kettering 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Sep 21, 2026 · Updated 1 time

Summary

This study tests whether a plant-based diet is practical for overweight people with MGUS or smoldering multiple myeloma, conditions that can lead to multiple myeloma. For 12 weeks, 23 participants receive two pre-made plant-based meals daily. Researchers track weight loss and diet adherence to see if this approach could help prevent cancer progression.

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 meals
What this could lead to
If this diet is feasible and effective, it could point toward a simple dietary approach to help prevent multiple myeloma in high-risk individuals.
What could go wrong
This is a very small pilot study with only 23 participants, so results may not apply to everyone. It tests feasibility, not whether the diet actually prevents cancer.

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

23 people

The number who actually took part.

Started

Jun 2021

Expected to finish

Jun 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 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: * BMI ≥25 * Confirmed diagnosis of MGUS or SMM * M spike (immunoglobulin) ≥0.2 g/dL or abnormal free light chain ratio with increased level of the appropriate involved light chain * Secretory disease * Age ≥18 years * Willingness to comply with all study-related procedures * ECOG performance status of 0-3 * Interest to learn to cook plant based recipes Exclusion Criteria: * Patients that already follow a whole foods plant based or vegan diet (ovo-lactovegetarian diets are not excluded) * Legume allergy * Severe allergies, such as anaphylactic shock to peanuts * Concurrent participation in weight loss/dietary/exercise programs * Mental impairment leading to inability to cooperate * Enrollment onto any other therapeutic investigational study * Concurrent pregnancy * Patients with a known diagnosis of diabetes mellitus will not be excluded but will need to be followed regularly with an endocrinologist/primary care physician during the trial period. * Positive HBV, HCV, HIV PCR testing * Non English speaking * ≥ Grade 2 electrolyte abnormalities as defined by CTCAEv5.0 (need to be resolved before enrolling on study) * If in the opinion of the investigator there maybe any concerns regarding the ability of the patient to complete the study safely

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Conditions

The condition(s) this trial relates to.

monoclonal gammopathy of uncertain significance Smoldering Multiple Myeloma smoldering plasma cell myeloma plasma cell myeloma prevention target

As listed by the trial registrant

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

Monoclonal gammopathy of undetermined significance Smoldering multiple myeloma

Contacts and locations

Locations

  • Memorial Sloan Kettering Basking Ridge

    Basking Ridge, New Jersey, 07920, United States

  • Memorial Sloan Kettering Bergen

    Montvale, New Jersey, 07645, United States

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065, United States

  • Memorial Sloan Kettering Commack

    Commack, New York, 11725, United States

  • Memorial Sloan Kettering Monmouth

    Middletown, New Jersey, 07748, United States

  • Memorial Sloan Kettering Nassau

    Uniondale, New York, 11553, United States

  • Memorial Sloan Kettering Westchester

    Harrison, New York, 10604, United States

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