Can cannabis calm chemo nerve pain? new study seeks answers
NCT ID NCT06731894
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether compounds from cannabis (CBD and THC) can reduce chronic nerve pain, tingling, and numbness caused by chemotherapy in breast and colon cancer survivors. About 120 people will take part and report their symptoms over 12 weeks. The goal is to find a better way to manage this long-term side effect.
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
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 120 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Jan 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Documented informed consent of the participant and/or legally authorized representative. * Assent, when appropriate, will be obtained per institutional guidelines * Agreement to allow the use of archival tissue from diagnostic tumor biopsies * If unavailable, exceptions may be granted with study principal investigator (PI) approval * Willingness to comply with all study interventions including the use of medical cannabis and follow-up assessments * Age: ≥ 18 years * Eastern Cooperative Oncology Group Performance Status Scale (ECOG) score ≤ 2 * Ability to read and understand English for questionnaires * Patients must have either neuropathy ≥ 1 according to Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0 scale or a neuropathy score of \> 3 on a 0-10 scale plus a FACT/GOG-Ntx score of \> 10 * The patient's previous chemotherapy treatment must have included a taxane (paclitaxel, nab-paclitaxel, or docetaxel) or platinum (cisplatin, oxaliplatin, or carboplatin) and considered the primary cause of the neuropathy by the medical team * Total bilirubin ≤ 1.5 X upper limits of normal (ULN) (unless has Gilbert's disease) (To be performed within 28 days prior to day 1 of protocol therapy unless otherwise stated) * Aspartate aminotransferase (AST) ≤ 3 x ULN (To be performed within 28 days prior to day 1 of protocol therapy unless otherwise stated) * Alanine aminotransferase (ALT) ≤ 3 x ULN (To be performed within 28 days prior to day 1 of protocol therapy unless otherwise stated) * Women of childbearing potential (WOCBP): negative urine or serum pregnancy test. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required (To be performed within 28 days prior to day 1 of protocol therapy unless otherwise stated) * Agreement by females and males of childbearing potential to use an effective method of birth control or abstain from heterosexual activity for the course of the study through at least 1 months after the last dose of protocol therapy. * Childbearing potential defined as not being surgically sterilized (men and women) or have not been free from menses for \> 1 year (women only) Exclusion Criteria: * Current active treatment with chemotherapy, radiation or surgery in the past 3 months or planned treatment during this study protocol period. Note: Hormonal therapy is allowed * Treatment with any neuropathic agent including taxane, platinum, vinca alkaloid, or bortezomib chemotherapy within the past 6 months * Concurrent use of other alternative medicines such as medical cannabis, herbal agents and high dose vitamins and minerals * Liver cirrhosis Child-Pugh B or C * Mental incapacitation or significant emotional or psychological disorder that, in the opinion of the investigators, precludes study entry. (These patients may not be able to cooperate with this slightly invasive procedure or with the data collection process.) * History of diabetic neuropathy, neuropathy related to HIV, or other medical causes of chronic neuropathy in the baseline assessment including past medical history, any history of diabetes, alcoholism, and vitamin B deficiency * Previous medical cannabis use for any indication within 30 days of enrollment * Planned or actual changes in type of medications that could affect symptoms related to CIPN. New medications for the treatment of CIPN are not allowed during the study. * Subjects need to be on stable doses of CIPN medications for 4 weeks * Strong inhibitors or inducers of CYP3A4 * History of allergic reactions attributed to compounds of similar chemical or biologic composition to study agent * Clinically significant uncontrolled illness * Diagnosis of Gilbert's disease * Females only: Pregnant or breastfeeding * Any other condition that would, in the Investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns with clinical study procedures * Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics) * Patients who have an allergy or an aversion to strawberry or strawberry flavoring
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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.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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City of Hope Medical Center
RECRUITINGDuarte, California, 91010, United States
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City of Hope at Irvine Lennar
RECRUITINGIrvine, California, 92618, United States
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- Can an antidepressant calm Chemotherapy's nerve pain?
- Retraining the senses to fight chemotherapy nerve damage