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Could a ketone drink boost CAR-T success in lymphoma?

NCT ID NCT06610344

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a ketone supplement (beta-hydroxybutyrate) is safe and tolerable for 5 adults with large B-cell lymphoma who are receiving standard CAR-T cell therapy. Researchers will also look at changes in gut bacteria and immune cells. The supplement is given as a drink before and during treatment.

What this could mean

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

Active substance
R-1,3-Butanediol (a ketone supplement that converts to beta-hydroxybutyrate)
What this could lead to
If it works, this could point toward a way to improve gut health and immune function during CAR-T therapy for lymphoma.
What could go wrong
This is a very small, early feasibility study with only 5 participants, so results may not apply broadly. The supplement could cause side effects or show no benefit.

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 5 people

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

Started

Jan 2025

Expected to finish

Sep 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: * Age of 18 years or older * History of pathologically-confirmed large B-cell lymphoma (LBCL) * Planned treatment with a commercially available anti-CD19 CAR-T product (Yescarta or Kymriah) * Eligible for and with adequate organ function (investigator discretion) and performance status (ECOG PS 2 or less) for standard of care, anti-CD19 CAR-T * Not enrolled on a clinical trial of bridging therapy prior to CAR-T * Patients must have a PET/CT scan (preferred), diagnostic CT scan, or MRI with at least one bi-dimensionally measurable lesion (≥ 1.5 cm for nodal lesions or ≥ 1cm for extra- nodal lesions in largest dimension by low-dose computerized tomography \[CT\] scan with FDG-uptake ≥ liver) documented prior to leukapheresis for CAR-T manufacturing * Resolution of toxicities from prior therapy to a grade that does not contraindicate trial participation in the opinion of the investigator * Can provide informed consent * Willing to comply with all study procedures and available for the duration of the study Exclusion Criteria: * Subject is pregnant or breast feeding * History of allergy to energy drinks * History of inflammatory bowel disease * History of type 1 diabetes mellitus or requirement for insulin * History of chronic kidney disease with an eGFR \< 30 mL/min/1.73m2 * Additional second primary malignancy for which the subject is receiving active therapy or that will impede the ability of the investigator to assess lymphoma response

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

  • Abramson Cancer Center at University of Pennsylvania

    RECRUITING

    Philadelphia, Pennsylvania, 19104, United States

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