Medical Cannabis Observational Study for Antiemetic Intervention in Chemotherapy (MOSAIC)

The goal of this observational study is to evaluate the associations between patient-directed medical cannabis use and chemotherapy-induced nausea and vomiting (CINV), as well as other treatment-related symptoms, among patients receiving chemotherapy that is known to cause nausea. The main questions it aims to answer are:

• Is patient-directed medical cannabis use associated with reduced nausea severity during chemotherapy treatment?
• Is-patient directed medical cannabis use associated with improved CINV control?
• Is patient directed medical cannabis use associated with improved appetite during chemotherapy treatment?
• Is patient-medical cannabis use associated with reduced treatment-related side effects, such as fatigue, sleep disturbances, general pain, and peripheral neuropathic pain?

Researchers will compare participants who report using medical cannabis with participants who do not report using medical cannabis to determine whether differences exist in nausea, CINV outcomes, and other treatment-related symptoms.

Participants will be followed over the course of 3 chemotherapy cycles, and asked to complete questionnaires, nausea diaries, and partake in a blood sample collection. Study participation can last from 6 - 12 weeks, depending on their prescribed chemotherapy cycle frequency.

Study Overview

• Status: Not yet recruiting
• Conditions: Nausea and Vomiting Chemotherapy-Induced
• Intervention / Treatment: Drug: Medical Cannabis

Detailed Description

Many people receiving chemotherapy experience nausea, even when they are given standard anti-nausea medications. Vomiting is now often well controlled, but nausea, especially nausea that occurs one or more days after chemotherapy, remains a major problem. Nausea can interfere with daily activities, reduce appetite, worsen quality of life, and sometimes lead to dehydration or delays in cancer treatment. New approaches are needed to better manage chemotherapy-related nausea.

Medical cannabis is commonly used by patients to help with nausea, appetite, sleep, pain, and other treatment-related symptoms. Although cannabis is legal for medical use in many U.S. states and cancer is a qualifying condition, there is limited scientific evidence about how well cannabis works for chemotherapy-related nausea when used alongside modern anti-nausea medications. More research is needed to understand its benefits, risks, and how it may best be used.

The purpose of this study is to examine the associations between patient-directed medical cannabis use and chemotherapy-related symptoms in adults receiving moderately or highly nausea-causing chemotherapy. The study will also evaluate associations between medical cannabis use and vomiting, appetite, fatigue, sleep, pain, nerve pain, mood, and quality of life. In addition, blood samples will be collected to explore whether medical cannabis use is associated with changes in inflammation related to cancer treatment.

About 50 adults with cancer who are receiving chemotherapy will take part in this study at the University of Rochester Medical Center. Participants must be 21 years of age or older and receiving chemotherapy that commonly causes nausea. People with certain medical or psychiatric conditions, recent cannabis use, history of stroke, TIA, COPD, or lung disease may be excluded based on study eligibility criteria.

All participants will determine if they wish to use medical cannabis as part of their routine symptom management independently, or in consultation with their oncologist. The study will observe and compare the symptom outcomes between participants who use medical cannabis and those who do not.

The study will not provide, prescribe, or direct the use of medical cannabis. Decisions regarding medical cannabis use will be made by participants and their medical team. Participants will keep daily diaries to record nausea, vomiting, cannabis use (if applicable), and any side effects. They will also complete questionnaires about symptoms, mood, and quality of life. Blood samples will be collected once per chemotherapy cycle during routine lab visits.

Possible risks include minor risks from blood draws such as bruising or lightheadedness. There is no direct benefit to participants in trial participation, but the information gained may help improve nausea management for future cancer patients.

This study will provide important early evidence about the relationship between medical cannabis use and chemotherapy-related nausea symptoms such as nausea, vomiting, appetite, fatigue, sleep, pain, and quality of life. This will help guide larger future clinical trials.

• Study Type: Observational
• Enrollment (Estimated): 50
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Luke Peppone, PhD; Phone Number: 585-275-7827; Email: Luke_Peppone@URMC.Rochester.edu

Study Locations

• United States
  • New York
    • Rochester, New York, United States, 14642
      • University of Rochester Medical Center
      • Contact: Luke J Peppone, PhD; Phone Number: 5852757827; Email: luke_peppone@urmc.rochester.edu
      • Contact: Liz Schifano, MSW; Phone Number: 585-275-0690; Email: elizabeth_schifano@urmc.rochester.edu

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

The MOSAIC study aims to enroll 50 participants. The study population consists of both males and females, aged 21 years or older, who are initiating first-line moderately or highly emetogenic chemotherapy, as defined by MASCC/NCCN criteria. Participants must be able to understand and communicate in English, and meet the various inclusion and exclusion criteria to be enrolled into this study.

Description

Inclusion Criteria:

• Have a diagnosis of cancer with no previous chemotherapy treatments (aside from current treatment)
• Be scheduled to receive treatment with a chemotherapeutic agent that is classified by the National Comprehensive Cancer Network (NCCN) as having a high emetogenic potential (>90% incidence) or moderate emetogenic potential (30-90% incidence).
• Must be scheduled for a minimum of 3 additional chemotherapy cycles at the time of enrollment.
• Chemotherapy agents may be given intravenously or orally.
• Chemotherapy cycles must be at least two weeks apart.
• For the purposes of this study, Day 1 is defined as the day of chemotherapy administration.
• Chemotherapy may be for adjuvant, neoadjuvant, curative, or palliative intent.

• Highly emetogenic - common types of chemotherapy

  • AC combination defined as any chemotherapy regimen that contains an anthracycline and cyclophosphamide
  • Carboplatin AUC ≥4
  • Carmustine >250 mg/m2
  • Cisplatin
  • Cyclophosphamide >1,500 mg/m2
  • Dacarbazine
  • Doxorubicin ≥60 mg/m2
  • Epirubicin >90 mg/m2
  • Ifosfamide ≥2 g/m2 per dose
  • Mechlorethamine
  • Streptozocin

• Moderately emetogenic - common types of chemotherapy:

  • Aldesleukin >12-15 million IU/m2
  • Amifostine >300 mg/m2
  • Arsenic trioxide
  • Azacitidine
  • Bendamustine
  • Busulfan
  • Carboplatin AUC <4
  • Carmustined ≤250 mg/m2
  • Clofarabine
  • Cyclophosphamide ≤1500 mg/m2
  • Cytarabine >200 mg/m2
  • Dactinomycin
  • Daunorubicin
  • Dual-drug liposomal encapsulation of cytarabine and daunorubicin
  • Dinutuximab
  • Doxorubicind <60 mg/m2
  • Epirubicind ≤90 mg/m2
  • Idarubicin
  • Ifosfamided <2 g/m2 per dose
  • Interferon alfa ≥10 million IU/m2
  • Irinotecan
  • Irinotecan (liposomal)
  • Melphalan
  • Methotrexated ≥250 mg/m2
  • Oxaliplatin
  • Temozolomide
  • Trabectedin
• Be willing to commit to the suggested medication dosing and delivery method, completing evaluation instruments, and attending all study visits.
• Be able to understand English (all assessment instruments are in English).
• Be 21 years of age or older.
• Give informed consent.
• Women of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control, or abstinence) for the duration of the study. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her study physician immediately.

Exclusion Criteria:

• Participants must not:
• Use of any THC-containing cannabis products within 30 days prior to enrollment, verified by participant self-report.

Allowable: Use of hemp-derived CBD products containing < 0.3 % THC is permitted, consistent with the 2018 Agriculture Improvement Act (federal definition of hemp). Use of CBD products will be documented in baseline case report forms.

• Have any allergies to cannabis or contraindication for cannabis.
• Have an active or recent (< 6 months) substance use disorder, as determined by medical history.
• Have recently quit smoking (< 6 months) or are actively engaged in a smoking-cessation program.
• Have a history of severe anxiety or paranoia on prior exposure to cannabis.
• Have a previous diagnosis of bipolar disorder or schizophrenia.
• Be pregnant or nursing.
• Have had a prior stroke.
• Have moderate or severe chronic obstructive pulmonary disease (COPD), defined as FEV₁ < 50 % predicted or current use of home supplemental oxygen.

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Cannabis Use Group; Participants who independently choose to obtain and use Medical Cannabis during chemotherapy.	Drug: Medical Cannabis; Participant-directed medical cannabis use
Standard Care Group; Participants who choose not to use cannabis and continue with antiemetic therapy as prescribed by their oncology care team.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Average and Maximum Nausea Severity as Measured by the Nausea and Vomiting Diary	Average nausea severity will be measured using a participant completed nausea and vomiting diary. Nausea severity is rated on an 11 point numeric scale anchored by "Not at all nauseated" (0) and "Extremely nauseated" (10). Average nausea is calculated as the mean of up to 15 assessment points, including afternoon, evening, and night on Day 1 and morning, afternoon, evening, and night on Days 2 through 4. Higher scores indicate greater nausea severity. Scores will be set to missing if 11 or more of the 15 assessments are missing. Maximum nausea severity will be measured using a participant-completed nausea and vomiting diary. Nausea severity is rated on an 11-point numeric scale anchored by "Not at all nauseated" (0) and "Extremely nauseated" (10). Maximum nausea is defined as the highest nausea rating reported across the same 15 assessment points.	Days 1-4 following chemotherapy administration during up to 3 on-study chemotherapy cycles (Day 1 defined as the day of chemotherapy administration; each chemotherapy cycle is 14-28 days, depending on regimen)
Number of Emesis Episodes Recorded in the Nausea and Vomiting Diary	Emesis episodes will be recorded daily by participants using the nausea and vomiting diary. The outcome is the total number of vomiting episodes recorded during the assessment period.	Days 1-4 following chemotherapy administration during up to 3 on-study chemotherapy cycles (Day 1 defined as the day of chemotherapy administration; each chemotherapy cycle is 14-28 days, depending on regimen)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Complete Protection From Chemotherapy Induced Nausea and Vomiting	Complete protection is defined as no emesis, no use of additional rescue therapy, and no significant nausea defined as a nausea score of 2 or less on a 0 to 10 numeric rating scale. The outcome will be reported as the proportion of participants meeting these criteria.	Days 1-4 following chemotherapy administration during up to 3 on-study chemotherapy cycles (Day 1 defined as the day of chemotherapy administration; each chemotherapy cycle is 14-28 days, depending on regimen)
Complete Control of Chemotherapy Induced Nausea and Vomiting	Complete control is defined as no emesis, no use of additional rescue therapy, and no nausea defined as a nausea score of 0 on a 0 to 10 numeric rating scale.	Days 1-4 following chemotherapy administration during up to 3 on-study chemotherapy cycles (Day 1 defined as the day of chemotherapy administration; each chemotherapy cycle is 14-28 days, depending on regimen)
Complete Response to Chemotherapy Induced Nausea and Vomiting	Complete response is defined as no emesis and no use of additional rescue therapy. The outcome will be reported as the proportion of participants meeting these criteria.	Days 1-4 following chemotherapy administration during up to 3 on-study chemotherapy cycles (Day 1 defined as the day of chemotherapy administration; each chemotherapy cycle is 14-28 days, depending on regimen)
Change in Appetite as Measured by the University of Rochester Cancer Center (URCC) Symptom Inventory	Appetite will be assessed using the URCC Symptom Inventory. Appetite is measured on an 11 point numeric scale anchored by "Not at all hungry" (0) and "Extremely hungry" (10). Higher scores indicate greater appetite.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Appetite Related Quality of Life as Measured by the Functional Assessment of Anorexia Cachexia Therapy Questionnaire	Appetite related quality of life will be measured using the Functional Assessment of Anorexia Cachexia Therapy questionnaire, a validated instrument designed to assess quality of life and anorexia or cachexia related concerns. Higher scores indicate better appetite related quality of life.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Anxiety Severity as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Anxiety Short Form	Anxiety severity will be measured using the PROMIS Anxiety Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating greater anxiety severity.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Depressive Symptoms as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Depression Short Form	Depressive symptoms will be measured using the PROMIS Depression Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating greater depressive symptom severity.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Fatigue as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Fatigue Short Form	Fatigue severity will be measured using the PROMIS Fatigue Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating greater fatigue severity.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Pain Interference as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Pain Interference Short Form	Pain interference will be measured using the PROMIS Pain Interference Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating greater pain interference.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Physical Function as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Physical Function Short Form	Physical function will be measured using the PROMIS Physical Function Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating better physical function.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Sleep Disturbance as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep Disturbance Short Form	Sleep disturbance will be measured using the PROMIS Sleep Disturbance Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating greater sleep disturbance.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Ability to Participate in Social Roles and Activities as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form	Ability to participate in social roles and activities will be measured using the PROMIS Ability to Participate in Social Roles and Activities Short Form. PROMIS T scores are standardized to a mean of 50 and a standard deviation of 10, with higher scores indicating better social participation.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Pain Intensity as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Pain Intensity Item	Pain intensity will be measured using a single PROMIS pain intensity item rated on a numeric scale ranging from 0 no pain to 10 worst imaginable pain. Higher scores indicate greater pain intensity.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Cognitive Function as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Cognitive Function Short Form	Perceived cognitive function will be measured using the PROMIS Cognitive Function Short Form. PROMIS T scores are standardized with higher scores indicating better cognitive function.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Concerns About Death and Dying as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Health-Related Quality of Life in Neurological Disorders (HDQLIFE) Concern With Death and Dying Scale	Concerns related to death and dying will be measured using the PROMIS HDQLIFE Concern With Death and Dying Short Form. Higher scores indicate greater concern.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Health Related Quality of Life as Measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) Preference Summary Score	Health related quality of life will be measured using the PROMIS Preference summary score, a preference based utility score derived from multiple PROMIS domains and calculated using the MultiAttribute Utility Theory method. Higher scores indicate better health related quality of life.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Peripheral Neuropathic Pain as Measured by the EORTC CIPN 20 Questionnaire	Peripheral neuropathic pain will be measured using the European Organisation for Research and Treatment of Cancer Chemotherapy Induced Peripheral Neuropathy 20 item questionnaire. Higher scores indicate greater neuropathic symptom severity.	Baseline (within 7 days before chemotherapy) and Day 4 following chemotherapy during Cycles 1 and 3; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).
Change in Psychological Distress as Measured by the NCCN Distress Thermometer	Psychological distress will be measured using the National Comprehensive Cancer Network Distress Thermometer, an 11 point scale ranging from 0 no distress to 10 extreme distress. Higher scores indicate greater distress.	Baseline (within 7 days before chemotherapy) to Day 4 after chemotherapy during up to 3 cycles; post-cycle questionnaires completed on Day 4 or within 48 hours (Day 1 = chemotherapy; cycles 14-28 days).
Subjective Drug Effects as Measured by the Drug Effects Questionnaire	Subjective drug effects will be measured using the Drug Effects Questionnaire, which assesses perceived strength of substance effects and desirability of substance effects using numeric rating scales. Higher scores indicate stronger or more desirable subjective effects.	Day 4 following chemotherapy during Cycle 3 only; questionnaire completed on Day 4 or within 48 hours thereafter (Day 1 defined as the day of chemotherapy administration; cycles are 14-28 days).

Collaborators and Investigators

• Sponsor: University of Rochester

Study record dates

Study Major Dates

• Study Start (Estimated): September 1, 2026
• Primary Completion (Estimated): March 1, 2028
• Study Completion (Estimated): March 1, 2028

Study Registration Dates

• First Submitted: January 16, 2026
• First Submitted That Met QC Criteria: January 23, 2026
• First Posted (Actual): January 29, 2026

Study Record Updates

• Last Update Posted (Actual): June 9, 2026
• Last Update Submitted That Met QC Criteria: June 4, 2026
• Last Verified: June 1, 2026

More Information

Terms related to this study

• Keywords: nausea; nausea and vomiting; medical cannabis; chemotherapy-induced nausea and vomiting
• Additional Relevant MeSH Terms: Signs and Symptoms, Digestive; Pathological Conditions, Signs and Symptoms; Signs and Symptoms; Nausea; Vomiting; Pharmaceutical Preparations; Medical Marijuana
• Other Study ID Numbers: STUDY00011238

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: De-identified individual participant data (IPD) underlying the primary and secondary outcome analyses will be made available upon reasonable request. Shared data will include analyzable datasets necessary to reproduce reported results.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No