Skip to content

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)

A Randomized Placebo Controlled Study of a Plant-Based Dietary Versus Supplement Versus Placebo Intervention in Patients With Monoclonal Gammopathy of Undetermined Significance (MGUS) and Smoldering Multiple Myeloma (SMM) - The Nutrition Prevention (NUTRIVENTION-3) Study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05640843
Enrollment
180
Registered
2022-12-07
Start date
2022-11-29
Completion date
2026-11-01
Last updated
2026-04-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Monoclonal Gammopathy of Undetermined Significance, Smoldering Multiple Myeloma

Keywords

Plant-Based Diet, Supplements, 22-175

Brief summary

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.

Interventions

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

DIETARY_SUPPLEMENTAlgae 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

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

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER
Paula and Rodger Riney Foundation
CollaboratorUNKNOWN
Plantable
CollaboratorUNKNOWN
M and M labs
CollaboratorUNKNOWN
VeggieDoctor
CollaboratorUNKNOWN
Sabinsa pharmaceuticals
CollaboratorUNKNOWN
Daily Harvest
CollaboratorUNKNOWN

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Intervention model description

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.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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.

Design outcomes

Primary

MeasureTime frameDescription
Stool microbiome diversity at 12 weeks12 weeksTo evaluate the change in stool microbiome diversity on a dietary vs supplement vs placebo intervention at 12 weeks when compared to baseline

Countries

United States

Contacts

CONTACTUrvi A Shah, MD, MS
ShahNutrivention@mskcc.org646-608-3713
CONTACTAlexander Lesokhin, MD
646-608-3717
PRINCIPAL_INVESTIGATORUrvi A Shah, MD, MS

Memorial Sloan Kettering Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 17, 2026