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Patients claim cannabis stops tumor growth – scientists investigate

NCT ID NCT07107607

Knowledge-focused Sponsor: HealthPartners Institute Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looks at medical records of 50 cancer patients who say cannabis helped stop their tumor from growing or shrank it. Researchers want to see if there is real evidence behind these claims. The goal is to gather information, not to test a new treatment.

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.

Participants

About 50 people

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

Started

Mar 2021

Expected to finish

Jan 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.

Who is studied

people with cancer who report that cannabis use had an impact on their cancer growth

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * diagnosed with cancer * have used any type of cannabis/marijuana, including those with cannabidiol (CBD) and/or tetrahydrocannabinol (THC) to treat their cancer * believe that cannabis has either stopped the tumor from growing and/or caused a cancer antigen blood marker to remain stable or cannabis has shrunken the tumor and/or caused reduction in a cancer antigen blood marker Exclusion Criteria: * does not have cancer * has not used any type of cannabis/marijuana, including those with CBD and/or THC to treat their cancer * does not believe that cannabis has either stopped the tumor from growing and/or caused a cancer antigen blood marker to remain stable or cannabis has shrunken the tumor and/or caused reduction in a cancer antigen blood marker

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Conditions

The condition(s) this trial relates to.

cancer cannabis dependence neoplasm

As listed by the trial registrant

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

Cancer Cancer (with or without metastasis)

Contacts and locations

Locations

  • HealthPartners Institute Cancer Research Center

    Saint Louis Park, Minnesota, 55426, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.