Dietary and Topical Magnesium Replacement or Supplementation in Patients With Lymphoma

March 12, 2026 updated by: Mayo Clinic

Pilot Feasibility Trial of Dietary and Topical Magnesium Replacement or Supplementation in Patients With Lymphoma

This early phase I trial investigates the effect of dietary and topical magnesium replacement on magnesium blood levels in patients with lymphoma. Magnesium is an element in the body that is important to cell health. The body cannot make magnesium and it typically comes from the food we eat. In patients who are ill, magnesium is often replaced intravenously (IV) through a vein or by mouth. This study may help researchers find out if being on a magnesium rich diet and using a magnesium lotion on the skin helps to keep magnesium blood levels in an ideal range. This study also investigates side effects and quality of life when receiving different forms of magnesium.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

PRIMARY OBJECTIVE:

I. Assess if dietary replacement with magnesium rich foods and topical magnesium replacement improves serum magnesium levels in patients with a history of a lymphoproliferative disorder, not on active myelosuppressive chemotherapy, and have a serum magnesium levels 1.5 - 1.9 mg/dL.

SECONDARY OBJECTIVES:

I. Evaluate the compliance of a diet rich in magnesium as well as compliance with topical magnesium replacement in lymphoma patients who have completed therapy and are in remission.

II. Assess feasibility of enrolling patients with a history of lymphoproliferative disorder, not on active treatment with low magnesium levels.

III. Assess tolerability and toxicity of a magnesium rich diet with and without topical magnesium replacement.

EXPLORATORY OBJECTIVES:

I. Assess quality of life in patients receiving magnesium replacement with diet and/or topical magnesium.

II. Evaluate whether magnesium replacement strategies are equally effective between ethnicities.

OUTLINE:

CYCLE 1: Participants consume magnesium rich foods orally (PO) daily for 28 days.

CYCLE 2: Participants with a magnesium level between 1.5-2.1 mg/dL at the end of cycle 1 are assigned to Arm I. Patients with a magnesium level between 2.2-2.3 mg/dL at the end of cycle 1 are assigned to Arm II. Patients with a magnesium level < 1.5 mg/dL at the end of cycle 1 go off study.

ARM I: Participants continue consuming magnesium rich foods PO daily and apply Ancient Minerals Magnesium Lotion topically daily for 28 days.

ARM II: Participants continue consuming magnesium rich foods PO daily for 28 days.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Early Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Recruiting
        • Mayo Clinic in Rochester
        • Contact:
        • Principal Investigator:
          • Thomas E. Witzig, M.D.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

PRE-REGISTRATION - INCLUSION CRITERIA:

  • Age >= 18 years
  • Currently have or have had in the past the diagnosis of any type of lymphoma
  • If previously treated, the patient must be off myelosuppressive chemotherapy with no planned chemotherapy for >= 2 months. Patients with lymphoproliferative disorders being observed (i.e., never treated) or those on rituximab (or equivalent) maintenance or chronic oral therapies such as BTK inhibitors, venetoclax, tazemetostat, or corticosteroids are also eligible
  • Able to eat a full range of solid food and liquids and tolerate seeds/nuts
  • Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) 0, 1, or 2
  • Provide written informed consent
  • Able to recollect dietary intake for the prior 24 hours in order to complete a one-day food record with assistance from a dietitian at each study visit
  • Willing to be seen at the enrolling institution at baseline, and at 4 weeks and 8 weeks (end of treatment) in person or by video/phone
  • Willing to have a blood magnesium checked every 2 weeks x 4 at any Mayo Clinic site
  • Ability to complete questionnaire(s) by themselves or with assistance

REGISTRATION - INCLUSION CRITERIA:

  • Magnesium level of 1.5 - 1.9 mg/dL (obtained =< 5 days prior to registration)

Exclusion Criteria:

PRE-REGISTRATION - EXCLUSION CRITERIA:

  • Cannot eat normal table food by mouth. NOTE: Patients with any form of feeding tube or a swallowing disorder are not eligible
  • Have taken dedicated magnesium supplements (i.e. magnesium oxide) or intravenous (IV) magnesium =< 28 days prior to pre-registration. Note: If patient is already on a multivitamin containing -magnesium, they may be enrolled, but the brand should not be changed during the 8 weeks on study
  • Co-morbid systemic illnesses such as active infection or other severe concurrent disease which, in the judgment of the investigator, would make the patient inappropriate for entry into this study or interfere significantly with the proper assessment of safety and toxicity of the prescribed regimens
  • Patients with significant gut malabsorptive conditions (such as inflammatory bowel disease or others at the discretion of the investigator) will be excluded as well as patients with chronic kidney disease stage 3b or greater (estimated glomerular filtration rate [eGFR] < 45)
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • Receiving any other investigational agent for lymphoma or any other disease
  • Active other malignancy requiring treatment that would interfere with the assessments of this study
  • Major surgery other than diagnostic surgery =< 4 weeks prior to pre-registration
  • Have an allergy to nuts
  • Patients with active skin lymphoma or rashes that would preclude lotion testing
  • Have taken antibiotics =< 7 days prior to pre-registration

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Cycle 1
Participants consume magnesium rich foods PO daily for 28 days.
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Behavioral: Special Diet Therapy
Consume magnesium rich foods
Other Names:
  • DIET
Experimental: Cycle 2, Arm I
Participants continue consuming magnesium rich foods PO daily and apply Ancient Minerals Magnesium Lotion topically daily for 28 days.
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Behavioral: Special Diet Therapy
Consume magnesium rich foods
Other Names:
  • DIET
Drug: Magnesium Chloride-based Lotion
Given topically
Other Names:
  • Ancient Minerals Magnesium Lotion
  • Magnesium Chloride Lotion
Experimental: Cycle 2, Arm II
Participants continue consuming magnesium rich foods PO daily for 28 days.
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Behavioral: Special Diet Therapy
Consume magnesium rich foods
Other Names:
  • DIET

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Improvement in serum magnesium levels
Time Frame: Baseline up to 2 cycles (56 days)
Will be defined as an increase in magnesium levels of at least 0.2 mg/dL from baseline level or an increase in magnesium level to 2.0 - 2.3 mg/dL at any time after the beginning of replacement.
Baseline up to 2 cycles (56 days)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Feasibility of patient enrollment
Time Frame: Baseline up to 2 cycles (56 days)
Will be assessed by the percentage of patients that pre-register who continue on to register for the study. Reasons for pre-registering but not continuing on to registration will be summarized descriptively.
Baseline up to 2 cycles (56 days)
Tolerability and Toxicity Assessment
Time Frame: Up to 56 days
Tolerability and toxicity will be assessed by evaluating the number of days the diet was not properly followed. This will be summarized descriptively.
Up to 56 days
Incidence of adverse events
Time Frame: Up to 56 days
Assess the number of doses of topical magnesium replacement missed due to adverse events. Reasons for missed doses will be summarized descriptively.
Up to 56 days
Patient compliance
Time Frame: Up to 56 days
Patient compliance with a diet rich in magnesium as well as compliance with topical magnesium replacement will be assessed by evaluating patient medication logs and meal logs. For the magnesium rich diet, a scoring points system will be utilized, where the goal is to achieve 10 points of magnesium in the diet each day. Compliance with the magnesium diet will be defined as meeting at least 7 points daily. For the topical magnesium replacement, the goal is to apply 6 pumps of the lotion daily. Compliance with the topical magnesium replacement will be defined as at least 5 pumps daily. The number of days met for the magnesium rich diet and topical magnesium replacement will be evaluated and summarized descriptively.
Up to 56 days

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Patient Medication Quality of Life Assessment
Time Frame: At baseline, 28 days, and 56 days
Will be summarized descriptively and changes across time will be explored by patient completing the Quality of Life Assessment Questionairre.
At baseline, 28 days, and 56 days
Relationship between race/ethnicity and differences in diet and serum magnesium levels
Time Frame: Up to 56 days
Will be assessed to evaluate whether magnesium replacement strategies are equally effective between racial/ethnic groups. The percentage of patients who achieve an improvement in magnesium levels from baseline will be evaluated in each racial/ethnic group to assess whether differences may exist.
Up to 56 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Mayo Clinic

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Cancer Institute (NCI)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Thomas E. Witzig, M.D., Mayo Clinic in Rochester

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 15, 2022

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 3, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 15, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 24, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 16, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 12, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • LS200801 (Mayo Clinic in Rochester)
  • P50CA097274 (U.S. NIH Grant/Contract)
  • 21-005406 (Other Identifier: Mayo Clinic Institutional Review Board)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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