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Cannabis Oil and Radiation Therapy for the Management of Pain

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03763851
Recruitment Status : Terminated (due to mycotoxin potential contamination of one lot of study drug)
First Posted : December 4, 2018
Last Update Posted : March 12, 2020
Santé Cannabis
McGill University
Information provided by (Responsible Party):
Tetra Bio-Pharma

Brief Summary:
In this innovative approach seeking effective therapeutic strategies, the investigators are proposing to test the effectiveness of medical cannabis oil as an adjunct to palliative Radiation Therapy (RT) and Best Supportive Care to alleviate cancer pain that was only partially relieved with conventional medications. Furthermore, the investigators will assess the effect of medical cannabis oil on health-related quality of life and symptoms that are frequently associated with metastatic cancers including fatigue, anxiety, depression, insomnia and decreased appetite. The safety profile of medical cannabis oil with respect to prolonged use of more than two weeks of administration, concomitant medication use and palliative RT will also be examined.

Condition or disease Intervention/treatment Phase
Metastatic Prostate Cancer Lung Cancer Breast Cancer Radiation: Active PPP005 Radiation: Radiotherapy Phase 2

Detailed Description:

This is a 6-week randomized, double-blind, placebo-controlled, parallel group design trial followed by an open-label extension phase of 12 weeks, to evaluate tolerability of medical cannabis oil to reduce chronic pain intensity.

Consecutive adult patients between the ages of 18 and 75, male and female, with cancer pain, with an average weekly pain intensity score greater than 4 on the 11 points Numerical Rate Scale (NRS), will be prospectively recruited and invited to participate in this trial.

Informed consent will be obtained by a Research Assistant.

After baseline documentation with standardized scales, patients will be randomized to one of two parallel groups:

  • Cannabis group: Delta-9 Tetrahydrocannabidiol (THC) /Cannabidiol (CBD) ratio 1:1 capsule
  • Placebo group: Placebo capsule
  • All patients will receive palliative RT to the symptomatic site. Patients will have a dose titration phase during the first week. The dose escalation will allow patients to adapt to the potential adverse effects (AEs) of the medical cannabis.

Follow-up visits either in person or by phone will be at 1 week, 3 weeks and 6 weeks of treatment.

At the end of the first phase of the study, patients who wish to participate in the open-label extension phase will have the option to continue in the same treatment regimen. For the placebo group, patients will have the option to receive the active treatment during the 12-week open-label phase if the study physician feels it may potentially provide benefits. Similarly, the dose will be titrated up in the placebo group who wants to receive the active drug in the extension program.

The open-label phase is 12 weeks long. For this open-label extension phase the follow-up visits will be done after 4 weeks and 12 weeks of treatment.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Treatment
Official Title: Cannabis Oil and Radiation Therapy for the Management of Pain: Assessment of Safety and Efficacy in a Randomized, Double-blind Placebo-controlled Phase II/III Clinical Trial
Actual Study Start Date : March 14, 2018
Actual Primary Completion Date : November 30, 2018
Actual Study Completion Date : November 30, 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Marijuana

Arm Intervention/treatment
Experimental: Cannabis group

Delta-9 Tetrahydrocannabidiol (THC) /Cannabidiol (CBD) ratio 1:1 capsule

These capsules contain different cannabis formulations with low-dose and high-dose preparations according to the treatment group:

  • Cannabis group low-dose capsule contains THC 1mg CBD 1mg
  • Cannabis group high-dose capsule contains THC 2.5mg CBD 2.5mg
Radiation: Active PPP005
Group assigned to active PPP005 in the randomized placebo-controlled trial

Radiation: Radiotherapy
Palliative RadioTherapy to the symptomatic site

Placebo Comparator: Placebo group
The placebo capsule will have no cannabis, it will look identical to the active treatment capsule, and it will also be prepared in "low-dose" and "high-dose" presentations.
Radiation: Radiotherapy
Palliative RadioTherapy to the symptomatic site

Primary Outcome Measures :
  1. Cancer pain intensity assessed by Pain Intensity (PI) measurement a numerical rating scale [ Time Frame: Change (a reduction of 30% in pain intensity) in pain intensity after medical cannabis oil administration compared to placebo at 6 weeks compared to baseline ]

    Pain Intensity (PI) measurement a Numerical Rating Scale (zero= no pain and 10= pain as bad as it can be).

    A reduction of PI ≥ 33% will be considered as a clinically important level of pain relief

  2. Cancer pain quality using the Brief Pain Inventory-SF (BPI-SF) [ Time Frame: The measurements will be completed at baseline before initiating treatment and at week 1, week 3 and week 6 after starting treatment ]
    The BPI-SF consists of nine questions; eight have a single response, and Question 9 is subdivided into seven parts. The Total BPI for Question 9 is the unweighted sum of the seven assessments and represents the effect of pain

Secondary Outcome Measures :
  1. Impact of medical cannabis oil combined with radiation treatment on HRQoL as measured by the EQ-5D-5L [ Time Frame: at baseline, 1-week, 3-week, and 6-week follow-up ]
  2. Functional status assessed by the Functional Assessment of Cancer Therapy for Prostate patients (FACT-P). [ Time Frame: The measurements will be completed at baseline before initiating treatment and at week 1, week 3 and week 6 after starting treatment ]
  3. Fatigue burden assessed by the Brief Fatigue Inventory (BFI). [ Time Frame: The measurements will be completed at baseline before initiating treatment and at week 1, week 3 and week 6 after starting treatment ]
  4. Cognitive status assessed by the Mini-Cog [ Time Frame: The measurements will be completed at baseline before initiating treatment and at week 1, week 3 and week 6 after starting treatment ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Ability to consent to the study-specific written consent form, in English or French;
  2. Adult patients, male and female between the ages of 18 and 75 (inclusively);
  3. Patients with confirmed diagnosis of metastatic carcinoma of the prostate, lung or breast;

    1. No limitation with respect to number of metastases (bone and visceral);
    2. Location of metastases limited to exclude any brain metastases
  4. Patients experiencing an average weekly pain intensity score of 4 or higher on a 11 points NRS and requiring palliative RT;
  5. KPS of equal or higher than 60;
  6. Subject agreed to follow the protocol;
  7. Patients who are referred to receive RT and are non-regular users of cannabis in any form (three times per week or more) and are willing to abstain for 1 week prior and during the study;
  8. Patients receiving opioids and other concomitant pain medications must have a stable dose for the last 15 days;
  9. Normal cognitive status according to MiniCog;
  10. Normal liver function (defined as aspartate aminotransferase 10-40 U/L and alanine aminotransferase 7-56 U/L)
  11. Normal renal function (defined as serum creatinine level <133 µmol/L and Estimated Glomerular Filtration Rate (eGFR) equal or higher than 60)
  12. Negative result on βhuman chorionic gonadotropin pregnancy test (if applicable)
  13. A female volunteer must meet one of the following criteria:

    1. If of childbearing potential - agrees to use one of the accepted contraceptive regimens from at least 28 days prior to the first drug administration, during the study and for at least 60 days after the last dose.
    2. If of non-childbearing potential - should be surgically sterile or in a menopausal state
  14. A male volunteer with sexual partners who are pregnant, possibly pregnant, or who could become pregnant must be surgically sterile or agrees to use one of the accepted contraceptive regimens from first drug administration until 3 months after the last drug administration.

Exclusion Criteria:

  1. Patients who are unable to consent or to comply with the instructions of the study;
  2. Patients suffering primarily from pain not related to cancer;
  3. KPS of < 60;
  4. Previous serious adverse event or hypersensitivity to cannabis or cannabinoids;
  5. Presence of significant cardiac disease (history of unstable ischemic heart disease, heart failure, severe and uncontrolled hypertension) that, in the opinion of the investigator, would put the patient at risk of a clinically significant arrhythmia or myocardial infarction;
  6. Current substance use disorder according to the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM 5);
  7. Life-time history of dependence on cannabis or diagnosis of cannabis use disorder (CUD) according to the DSM 5;
  8. Life-time history of DSM 5 schizophrenia, bipolar disorder, or previous psychosis with or intolerance to cannabinoids;
  9. Current suicidal ideation according to the Columbia-Suicide Severity Rating Scale (C-SSRS);
  10. Pregnant, breast-feeding or female patients of child-bearing potential and male patients whose partner is of child-bearing potential, unless willing to ensure that they or their partner use effective contraception;
  11. Hepatic impairment (aspartate aminotransferase more than three times normal) or renal function impairment (serum creatinine level >133 µmol/L.
  12. Cognitive impairment according to MiniCog;
  13. Current use of cannabis in any form more than 3 times per week or use of cannabinoid-based medications within 7 days of study entry and refusal to abstain for the duration of the study;
  14. Positive blood test for cannabinoids at screening or positive urine screening for other potential abuse substances (e.g. alcohol, cocaine, amphetamines and methamphetamines, unprescribed opioids);
  15. Participation in another clinical trial within 30 days of screening visit

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03763851

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Canada, Quebec
Sante Cannabis
Montreal, Quebec, Canada
Sponsors and Collaborators
Tetra Bio-Pharma
Santé Cannabis
McGill University
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Principal Investigator: Tamim Niazi, MD Jewish General Hospital, McGill University
Principal Investigator: Jean Zigby, MD Jewish General Hospital, McGill University
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Responsible Party: Tetra Bio-Pharma Identifier: NCT03763851    
Other Study ID Numbers: PPP005-Ph2/3-01
First Posted: December 4, 2018    Key Record Dates
Last Update Posted: March 12, 2020
Last Verified: March 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Prostatic Neoplasms
Marijuana Abuse
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Prostatic Diseases
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders