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4-Week vegan diet tested as CLL therapy

NCT ID NCT07487428

Disease control Sponsor: Technical University of Munich Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a 4-week whole-food plant-based diet can improve immune function and slow disease activity in people with early-stage chronic lymphocytic leukemia (CLL) who have not yet received treatment. Fifty participants will follow the diet and provide blood and stool samples before, during, and after the diet period. Researchers will measure changes in lymphocyte counts and immune cell metabolism.

What this could mean

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

Active substance
whole-food plant-based diet
What this could lead to
If it works, this could point toward a dietary approach to help manage early-stage CLL without immediate drug treatment.
What could go wrong
This is a small, early-phase study with only 50 participants and no control group. The diet is short-term, so any effects may be temporary or not clinically meaningful.

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

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2024

Expected to finish

Jun 2028

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: * Confirmed CLL diagnosis * No previous treatments (watch and wait) * Willingness to comply to a whole-food plant-based diet for 4 weeks * Willingness to participate in a total of 3 blood drawings Exclusion Criteria: * Emergency interventions * Patients that already follow a WFPB or vegan diet * Progression of CLL that implicates need for treatment * Insulin-dependent diabetes * Taking lipid-lowering medications (e.g. statins) * Body mass index (BMI) \<20 And if in the opinion of the investigator there are 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.

B-cell chronic lymphocytic leukemia Leukemia, B-Cell

As listed by the trial registrant

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

CLL (chronic lymphocytic leukemia)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Klinikum der Technischen Universität München (Klinikum rechts der Isar)

    RECRUITING

    München, Bavaria, 81676, Germany

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