About this trial
This phase II trials evaluates how well different types of phytocannabinoids (cannabidiol \[CBD\] versus tetrahydrocannabinol \[THC\] and CBD formulation \[THC:CBD\]) work to reduce chronic chemotherapy-induced peripheral neuropathy among breast and colon cancer survivors. Chemotherapy induced peripheral neuropathy is a set of symptoms that includes pain, tingling, numbness and motor weakness caused by certain types of chemotherapy treatment. Phytocannabinoids are compounds made by the cannabis plant, such as THC and CBD, that have been found to be an effective treatment for chronic pain. Phytocannabinoids may be effective in reducing chronic chemotherapy-induced peripheral neuropathy symptoms in patients treated for breast or colon cancer.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
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
Disqualifiers
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
Trial design
Parallel
Treatments tested in this trial
Biospecimen Collection
Procedure/SurgeryUndergo urine sample collection
Cannabidiol
DrugGiven PO
Dronabinol
DrugGiven PO
Placebo Administration
DrugGiven PO
Survey Administration
Other interventionAncillary studies
Treatment groups
Trial outcomes
Primary outcomes
Subjectively experienced symptoms of peripheral neuropathy
Assessed via Functional Assessment of Cancer Therapy/Gynecologic Oncology Group Neurotoxicity Subscale (FACT/GOG-Ntx). Will compare difference scores from the FACT/GOG-Ntx between all these groups using analysis of variance. A paired t-test will be utilized to compare scores between baseline and 8 and 12 weeks of treatment for each group separately.
Secondary outcomes
Health-related quality of life
Assessed via Functional Assessment of Cancer Therapy-General. A paired T-test will be utilized to compare scores between baseline and 8 weeks of treatment. For comparisons between groups at four specific assessment points (baseline, week 4, week 8, and week 12), a repeated measures analysis of variance analysis will be performed.
Neuropathic medication utilization
Neuropathic medication utilization data will initially be analyzed as a dichotomous variable (yes/no) for each medication. Comparisons between the baseline and after-treatment medication status will be analyzed using McNemar's test. Including all the time points in the analysis of any single medication will use Cochran's Q test.
Pain medication utilization
Pain medication utilization data will initially be analyzed as a dichotomous variable (yes/no) for each medication. Comparisons between the baseline and after-treatment medication status will be analyzed using McNemar's test. Including all the time points in the analysis of any single medication will use Cochran's Q test.
Incidence of adverse events
All adverse events will be graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 6.0. The severe adverse events (SAE) (grade ≥ 3) will be tabulated per treatment arm and the difference of SAE will be compared among groups using chi-square test.
Sponsors and contacts
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City of Hope Medical Center
Lead sponsor
National Cancer Institute (NCI)
Collaborator