A Study Comparing a Plant-Based Diet With Supplements and Placebo in People With Monoclonal Gammopathy of Undetermined Significance (MGUS) or Smoldering Multiple Myeloma (SMM)

NCT ID: NCT05640843

Last Updated: 2025-11-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-11-29

Study Completion Date

2026-11-30

Brief Summary

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The researchers are doing this study to look at how butyrate levels change in participants' stool after they are on a- plant-based diet for at least 12 weeks. All participants will have monoclonal gammopathy of undetermined significance (MGUS) or smoldering multiple myeloma (SMM). We will compare how the plant-based diet, omega-3 fatty acid and curcumin supplements, and placebo (an inactive substance that looks like the study supplements) affect butyrate levels in participants' stool.

Detailed Description

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Conditions

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Monoclonal Gammopathy of Undetermined Significance Smoldering Multiple Myeloma

Keywords

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Plant-Based Diet Supplements 22-175

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

This is a randomized, multi-center pilot study with 150 patients (50 per arm). Randomization will be stratified based on BMI and MGUS/SMM status. Randomization in the supplement and placebo arms will be blinded.
Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Daily Harvest weekly

For 12 weeks, on the Daily Harvest weekly arm, patients will receive two premade meals per day, for lunch and dinner for 6 days weekly, prepared and shipped by U.S.-based company Daily Harvest weekly.

Group Type EXPERIMENTAL

Whole Foods Plant-based Diet

Intervention Type OTHER

The meals will have a low glycemic index and contain legumes, vegetables, whole grains, and plant-based fats that have undergone minimal processing. Detailed recommendations for snacks and breakfasts meeting the standard of a WFPBD will also be given to supplement their daily calorie needs with access to education materials. Patients will also receive dietary education and counselling from a research dietitian every 4 weeks for the 12-week intervention period. They will have access to the team for questions and support as needed

Supplements

For 12 weeks on the supplement arm, patients will be given algae omega 3 supplements (QWell pharmaceuticals) and curcumin supplements (Sabinsa pharmaceuticals) twice daily.

Group Type EXPERIMENTAL

Algae Omega 3 + Curcumin

Intervention Type DIETARY_SUPPLEMENT

For 52 weeks on the supplement arm, patients will be given algae omega 3 supplements and curcumin supplements (Sabinsa pharmaceuticals) twice daily

Placebo

For 12 weeks on the placebo arm, patients will be given placebo supplements twice daily (QWell and Sabinsa pharmaceuticals).

Group Type PLACEBO_COMPARATOR

Placebo supplements

Intervention Type OTHER

For 25 weeks on the placebo arm, patients will be given placebo supplements twice daily (Veggie Doctor/M and M pharmaceuticals and Sabinsa pharmaceuticals).

Interventions

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Whole Foods Plant-based Diet

The meals will have a low glycemic index and contain legumes, vegetables, whole grains, and plant-based fats that have undergone minimal processing. Detailed recommendations for snacks and breakfasts meeting the standard of a WFPBD will also be given to supplement their daily calorie needs with access to education materials. Patients will also receive dietary education and counselling from a research dietitian every 4 weeks for the 12-week intervention period. They will have access to the team for questions and support as needed

Intervention Type OTHER

Algae Omega 3 + Curcumin

For 52 weeks on the supplement arm, patients will be given algae omega 3 supplements and curcumin supplements (Sabinsa pharmaceuticals) twice daily

Intervention Type DIETARY_SUPPLEMENT

Placebo supplements

For 25 weeks on the placebo arm, patients will be given placebo supplements twice daily (Veggie Doctor/M and M pharmaceuticals and Sabinsa pharmaceuticals).

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Confirmed diagnosis of MGUS or SMM
* If non light chain MGUS/SMM then M spike must be either ≥ 0.2 g/dL or BM PC ≥10% (both not required)
* If light chain MGUS/SMM then involved must be ≥10 mg/dL or BM PC ≥10% (both not required)
* If IgA MGUS/SMM then an IgA level \>350 mg/dL and an abnormal immunofixation is required (M spike criteria not required).
* If IgD MGUS/SMM then an IgD level \>50 mg/dL and an abnormal immunofixation is required (M spike criteria not required).
* Age ≥18 years
* Willingness to comply with all study-related procedures
* ECOG performance status of 0-3
* Interested in learning to cook plant based recipes

Exclusion Criteria

* Patients that already follow a whole foods plant based diet (ovo-lacto-vegetarian or processed junk food vegan diets are not excluded)
* Legume allergy
* Severe allergies such as anaphylactic shock to nuts (specifically cashews). Peanuts are not included in the meals.
* Concurrent participation in weight loss/dietary/exercise programs
* Mental impairment leading to inability to cooperate
* Enrollment onto any other therapeutic investigational study concurrently and up to 180 days prior to study start date
* Concurrent pregnancy
* Positive HBV, HCV or HIV PCR test will need to be treated first and once undetectable viral load patients may enroll
* ≥ 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 or any contraindications
* Heavy drinker (defined as \>2 drinks per day or \>14 drinks per week)
* Current self-reported illicit drug use (eg heroin, cocaine not marijuana)
* Plan for prolonged travel during the study that would preclude adherence to prescribed diets
* History of major gastrointestinal surgery (not including appendectomy or cholecystectomy) within 3 months of enrollment
* If already taking curcumin or omega 3 supplements patients must be willing to stop it on the date of trial consent for study duration.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Paula and Rodger Riney Foundation

UNKNOWN

Sponsor Role collaborator

Plantable

UNKNOWN

Sponsor Role collaborator

M and M labs

UNKNOWN

Sponsor Role collaborator

VeggieDoctor

UNKNOWN

Sponsor Role collaborator

Sabinsa pharmaceuticals

UNKNOWN

Sponsor Role collaborator

Daily Harvest

UNKNOWN

Sponsor Role collaborator

Memorial Sloan Kettering Cancer Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Urvi A Shah, MD, MS

Role: PRINCIPAL_INVESTIGATOR

Memorial Sloan Kettering Cancer Center

Locations

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Emory University (Data Collection Only)

Atlanta, Georgia, United States

Site Status RECRUITING

Memorial Sloan Kettering Basking Ridge (All Protocol Activities)

Basking Ridge, New Jersey, United States

Site Status RECRUITING

Memorial Sloan Kettering Monmouth (All Protocol Activities)

Middletown, New Jersey, United States

Site Status RECRUITING

Memorial Sloan Kettering Bergen (All Protocol Activities)

Montvale, New Jersey, United States

Site Status RECRUITING

Memorial Sloan Kettering Suffolk- Commack (All Protocol Activities)

Commack, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering Westchester (All Protocol Activities)

Harrison, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering Cancer Center (All Protocol Activities)

New York, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering Nassau (All Protocol Activities)

Uniondale, New York, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Urvi A Shah, MD, MS

Role: CONTACT

Phone: 646-608-3713

Email: [email protected]

Alexander Lesokhin, MD

Role: CONTACT

Phone: 646-608-3717

Facility Contacts

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Nisha Joseph, MD

Role: primary

Urvi A Shah, MD, MS

Role: primary

Urvi A Shah, MD, MS

Role: primary

Urvi A Shah, MD, MS

Role: primary

Urvi A Shah, MD, MS

Role: primary

Urvi A Shah, MD, MS

Role: primary

Urvi A Shah, MD, MS

Role: primary

Urvi A Shah, MD, MS

Role: primary

Related Links

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http://www.mskcc.org/mskcc/html/44.cfm

Memorial Sloan Kettering Cancer Center

Other Identifiers

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22-175

Identifier Type: -

Identifier Source: org_study_id