Find out what you should know about the potential use and effects of medical marijuana for pancreatic cancer patients. The Effect of Cannabis in Pancreatic Cancer The prevalence of malnutrition is overwhelming in pancreatic cancer patients, >80% experience a weight loss >10% of their habitual weight, which may A study published this week found that mice with pancreatic cancer survive nearly three times longer if medical cannabis was added to their chemotherapy treatment.
Marijuana and Pancreatic Cancer: 5 Things to Know
Cancer patients have reported finding pain relief and appetite stimulation from the use of medical marijuana, also known as cannabis. In fact, the Pancreatic Cancer Action Network’s (PanCAN) Patient Services, which provides free, in-depth and personalized resources and information about pancreatic cancer, has received many questions about the use and effects of medical marijuana. For example, how is marijuana derived and how can it be used by cancer patients?
Marijuana is a plant that contains substances called cannabinoids. The cannabinoids found in marijuana plants may help treat the symptoms and side effects caused by cancer and cancer treatments. In addition to the naturally occurring cannabinoids found in marijuana plants, cannabinoid drugs have been developed in laboratories for use in helping to treat side effects and symptoms of cancer and cancer treatments.
The use of marijuana and cannabinoid drugs for medicinal purposes, such as controlling pain and stimulating appetite in cancer patients, have been and continue to be studied in the lab and in clinics. Consequently, conflicting information has been reported in clinical studies using cannabinoids as pain relievers or appetite stimulants for cancer patients.
Some studies have reported that patients regained appetite and sense of taste, while others reported cannabinoids are no more helpful than other prescription appetite stimulant medications. Likewise, some studies about pain relief report promising results, while others have shown cannabinoids are no more helpful than prescription medications for controlling pain.
This map shows U.S. states and territories where marijuana is legal for medical purposes.
(Image courtesy of the National Cancer Institute.)
It is important for patients to speak with their doctor to determine if marijuana would be helpful in their fight against pancreatic cancer. According to Anne-Marie Duliege, MD, PanCAN’s Chief Medical Officer, “Since there has not been sufficient data generated yet to produce consistent clinical results about the benefits of medical marijuana for patients, we encourage patients to discuss problems such as pain and appetite stimulation with their doctor to determine the right medications to help control such issues.”
Patient Services often receives questions about how medical marijuana can be used when fighting pancreatic cancer. Here are five things to know:
- What is marijuana? Marijuana is a plant grown in many parts of the world that makes resin-containing compounds called cannabinoids. Some cannabinoids are psychoactive, meaning they act on the brain to change mood or consciousness.
- In which states is medical marijuana legal? 36 states and four territories have some type of legal medical marijuana program. Find out if it is legal in your state.
- What are the active ingredients? The main active cannabinoid in marijuana is delta-9-THC. Another active cannabinoid is cannabidiol (CBD), which may relieve pain, lower inflammation, and decrease anxiety without causing the “high” of delta-9-THC.
- How can medical marijuana be administered? Cannabinoids are available in a variety of formats. They can be taken by mouth as capsules, sprayed under the tongue, inhaled, used topically, or included as an ingredient in food and eaten.
- Has the U.S. Food and Drug Administration (FDA) approved marijuana for cancer use? No, but the FDA has approved two cannabinoids (dronabinol and nabilone) for chemotherapy-related nausea and vomiting prevention or treatment.
Contact Patient Services with any questions about cannabis or any other topics related to pancreatic cancer, or visit the National Cancer Institute online for additional information.
The Effect of Cannabis in Pancreatic Cancer
The prevalence of malnutrition is overwhelming in pancreatic cancer patients, >80% experience a weight loss >10% of their habitual weight, which may develop into cancer cachexia. Cachexia may cause decreased quality of life, increased mortality and morbidity e.g. poorer response to antitumor treatment, longer length of stay, higher complications rate and shorter life expectancy. There is currently no effective treatment of cancer cachexia, but clinical research in medical cannabis show promising results. The cannabinoids THC and CBD show the highest pharmacological effect, but cannabis consists of >70 cannabinoids. THC and CBD exert their effect on the endocannabinoid system which modulate physiological systems such as pain, inflammation, appetite and energy balance. Thus, this potential orexigenic effect from THC and CBD may improve the nutritional state in patients with pancreatic cancer. Taking the above scientific rationale and the lack of evidence into account, the relevance of this clinical trial appears high.
This clinical trial is an eight-week crossover design examining the effects of the cannabinoids THC and CBD on energy- and protein intake and lean body mass as a measure of appetite, nausea and quality of life. A characterization of the metabolism is analysed through a metabolomics analysis.
|Condition or disease||Intervention/treatment||Phase|
|Neoplasms Pancreatic Cachexia; Cancer Cannabis Appetite Loss Palliative Medicine Morbidity Mortality||Drug: THC and CBD Mixture||Phase 2|
The aim is to investigate the effect of the cannabinoids THC (tetrahydrocannabinol) and CBD (cannabidiol) on energy- and protein intake and lean body mass in patients with pancreatic cancer. A metabolomics analysis is conducted to determine the simultaneous and quantitative intracellular metabolites when medical cannabis is administered in patients with pancreatic cancer.
The clinical trial is designed as a crossover intervention trial with a four week intervention period and a four week control period. The study subjects are instructed to administer individual titered doses of medical cannabis during the intervention period. Dietary history, height, weight, bio- impedance, VAS scales and quality of life measurements are conducted at baseline, every second week and at the end of the clinical trial. Six study subjects are invited to a semi-structured interview. Blood samples and urine samples are used for the metabolomics analysis thus a research biobank is established.
Study population: 32 study subjects diagnosed with pancreatic cancer in palliative care are included. Inclusions criteria: adult, weight loss > 5% of habitual weight. Able to understand and read Danish. Exclusion criteria: regular use of cannabis, psychiatric disorders e.g. Anorexia Nervosa, alcohol abuse, life expectancy
Descriptive statistics is used to characterize the study population. The statistical analysis is carried out in R-Project and all primary data are analyzed as intention-to-treat. P value 90% of patients with pancreatic cancer in the palliative phase experience reduced energy- and protein intake. The quantity of the reduction is, however, very poorly described and appear to depend on cancer progression.
The trial which is approved by the Research Ethics Committee is expected to commence May 2017 after approval by the Danish Medicines Agency and the Data Protection Agency. The clinical trial finish no later than February the 6th 2018. The specified time limit is due to the trial is also basis for a master’s thesis in Clinical Nutrition at the Department of Nutrition, Exercise and Sports, University of Copenhagen. A PhD based on this master thesis will proceed afterwards. Taking into account the patients’ usual control times and to minimize dropout, patient inclusion takes place ongoing, so that there is a control- and intervention period at the same time. Outcome measurements including anthropometry and dietary interviews are carried out at baseline, every two weeks and at the termination of each period. Quality of life measurements and VAS scales are filled out weekly in both periods. The semi-structured interview is carried out at the end of the clinical trial.
The results are going to be published, this applies to both positive, inconclusive and negative results. The clinical trial is registered in the two trial databases ClinicalTrials.gov and EudraCT (clinicaltrialsregister.eu). Scientific articles based on the findings are submitted to relevant journals such as The American Journal of Clinical Nutrition (2014 Impact Factor: 6.770). The results are furthermore used in a master’s thesis in Clinical Nutrition at the Department of Nutrition, Exercise and Sports, University of Copenhagen by Ninette Renee Jensen and Rikke Lundsgaard Nielsen. The results will be presented at congresses. reported in scientific articles, in the master”s thesis, in the information material, on the department’s website, at the public master ́s thesis defense as well as at future congresses, or wherever desired. When the clinical trial is completed a report is sent to relevant authorities including the Research Ethics Committee and the Danish Medicines Agency within 90 days of completion.
Necessary permits from the Data Protection Agency, the Danish Medicines Agency and the Research Ethics Committee are obtained before the initiation of the clinical trial. The protocol is approved by the Research Ethics Committee. Side effects caused by medical cannabis varies in the literature, thus an individual titration period is implemented. No fatal cases have been reported with the use of medical cannabis in human clinical trials. Potential beneficial effects are expected when the study subjects are being treated with medical cannabis, since a gain in appetite and quality of life is expected through a modulation in the endocannabinoid system. Patients are informed that the drug is discontinued after the intervention period. The two master’s thesis students review patient charts weekly to evaluate potential side effects to the drug. The clinical trial is terminated immediately in case of serious side effects. Relevant information material is handed out to the study subjects.
Upon loss of muscle mass and function as seen in cancer cachexia, the administration of individually titrated doses of medical cannabis could hypothetically slow down the condition further, by affecting any negative protein – and energy balance through the endocannabinoid system. When relieving cancer cachexia and improving steady-state, we expect improved prognosis’s for the included patients
The overall objective of the study is that it must be orientated towards clinical significance, so that it can be implemented in clinical practice, thus benefit patients with cancer. The short-term goal is that the patients in this trial experience positive effects in terms of increased appetite and quality of life. Positive effects may contribute to increased research into this area thus resulting in improved evidence. In the longer term, the aim is that the results from this study may contribute to a treatment protocol on malnutrition recommending the use of medical cannabis based on high scientific evidence, so a larger group of patients with cancer may benefit. The results from the study may be used for recommendations on doses, side effects and likely beneficial effects when administer medical cannabis. The metabolomics analysis can contribute to a improved understanding of the cancer cachexia pathophysiology and management in a more experimental matter.
NEW RESEARCH: Medicinal cannabis could improve survival rates of pancreatic cancer
The Cannabis plant has different components, it contains active ingredients called cannabinoids. One of these components is cannabidiol (CBD) which is the compound that does not make people feel ‘high’, unlike the component tetrahydrocannabinol (THC) which has psychoactive properties.
There has been research that shows that this part of the plant has some medical benefits, one of which is helping to stop cell growth in certain types of cancer.
The home secretary has already allowed specialist doctors in the UK to legally prescribe cannabis products and the use of cannabis for medical treatments has been approved to be used in the NHS by the end of this year.
About the study
The new study, looked at the impact of CBD on mice with the disease, receiving the common chemotherapy drug Gemcitabine .
The mice treated with this combination of drugs had a median average survival of 56 days, compared to 20 days for those left untreated, while mice receiving chemotherapy alone lived for a median 23.5 days.
The research, funded by Pancreatic Cancer Research Fund, is in the very early stages and still needs to be tested in humans which is likely to take some time. However, l ead researcher of the study, Professor Marco Falasca from Queen Mary University in London, says:
“Cannabidiol is already approved for use in clinics, which means we can quickly go on to test this in human clinical trials. If we can reproduce these affects in humans, cannabidiol could be in use in cancer clinics almost immediately.”
Lu Constable, Marketing and Communications Manager at Pancreatic Cancer Action says:
“Although this research is in it’s early stages, this is a really exciting and promising study. H opefully, in the future clinical trials (testing on humans) will provide insight into whether using CBD in combination with chemotherapy will help improve survival rates for pancreatic cancer patients.
We are really looking forward to seeing how this research will progress and ultimately, help pancreatic cancer patients.”
Ceridwen shares her experience with CBD oil
Ceridwen Maddock-Jones, Pancreatic Cancer Action supporter and pancreatic cancer patient, has been using Cannabis oil, she says:
“I put the paste into capsules with coconut oil and CBD oil… I also take drops of CBD and THC oil under my tongue.
CBD is thought to stop the progression of cancer and THC kills cancer cells, so taking the two together will hopefully offer maximum benefit, while the small doses throughout the day keeps them in my system.”
About pancreatic cancer
Pancreatic cancer is the UK’s fifth biggest cancer killer and is set to become one of the UKs top 4 cancer killers by 2026.
The 5-year survival rate for pancreatic cancer is less than 7% in the UK, this is the worst survival rate of any 22 common cancers. This could partly be due to the fact that pancreatic cancer can be resilient to some chemotherapy.
Currently, there is no early detection test for pancreatic cancer and the only cure is surgery with chemotherapy. Surgery is only possible if it is found early enough. Click here to read our blog Is pancreatic cancer curable?
Pancreatic Cancer Action’s primary focus is to improve early diagnosis. We do this by raising awareness amongst the public, providing free resources to healthcare professionals and funding early diagnosis research.