Investigating the effect of medicinal cannabis on the symptoms and side effects of chemotherapy in people with cancer.

The CANCAN trial aims to provide the evidence needed to better inform healthcare professionals in the use of medicinal cannabis in people with cancer. The purpose of this study is to investigate whether medicinal cannabis – a combination of cannabidiol (CBD) and tetrahydrocannabinol (THC) – is effective and safe for the management of chemotherapy symptoms and side effects in people receiving treatment for cancer. Who is it for? You may be eligible for this study if you are aged 18 years or older, and are scheduled to undergo either at least 3 cycles of chemotherapy for treatment of a solid tumour, or autologous stem cell transplantation for treatment of a haemotological cancer. Study details Participants will be randomised (i.e. allocated by chance) to receive either the medicinal cannabis treatment or a placebo. Participants in the medicinal cannabis group will receive 400mg per day of CBD and a starting dose of 2.5mg per day of THC in the form of an oral capsule for the duration of each treatment cycle, while participants in the placebo group will receive a daily glucose capsule. All participants will be monitored for symptoms of gut distress, have blood tests and their body weight taken, and answer a number of questionnaires, to determine if the medicinal cannabis treatment has an effect on chemotherapy symptoms and side effects for up to 6 months after the completion of treatment. Participants will also be monitored over this period for whether they have used supportive care or been hospitalised, for whether they have completed or ceased treatment and why, for their response to chemotherapy, and for any adverse events. It is hoped that this study may show that medicinal cannabis will minimise the intensity of chemotherapy symptoms, and thus have beneficial effects on the outcomes of chemotherapy. Specifically, we anticipate that CBD will minimise gut injury, therefore minimising local symptoms including diarrhea, malabsorption and pain, while THC will promote food intake, improve sleep quality and decrease anxiety. We expect this to have benefits on quality of life, and the ability of participants to receive their intended dose of chemotherapy without interruptions.