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Clinical Trial Summary

To investigate delta-9-tetrahydrocannabinol's (THC) ability to increase food intake and improve food enjoyment for advanced cancer patients with taste and/or smell (chemosensory) abnormalities.


Clinical Trial Description

Appetite stimulants are the common treatment for cancer-induced anorexia. However, only 30% of advanced cancer patients respond and benefit from appetite stimulants, which may be due in part to sensory abnormalities, as a person who is experiencing food aversion due to taste and smell changes may be unable to respond to these agents. Of the appetite stimulants available for use in clinical practice only Marinol, or THC, has the potential to increase food intake by improving appetite as well as by amplifying the taste of food through the brain's reward pathway.

A 22-day, double blind, randomized, placebo-controlled trial will be conducted. Participants will start at 2.5mg of THC or placebo once daily for the first 3 days and then increase to 2.5mg of THC or placebo twice daily before lunch and supper. Participant's will complete the following survey tools pre and post-treatment: Taste and Smell Survey to assess the severity and change in chemosensory complaint scores; 3-day dietary record to determine the change in caloric intake and shift in food preference by macronutrient analysis; 24-hour urine collections to validate the 3-day dietary record; Satiety Labelled Intensity Magnitude scale for subjective appetite ratings; Food Preference Checklist to assess objective shifts in macronutrient and flavor preferences; Functional Assessment of Anorexia/Cachexia Therapy questionnaire to assess participant's QOL; interview to determine the cause and effects of chemosensory alterations; Edmonton Symptom Assessment Scale to assess nausea; and Side Effect Survey to document the tolerability of the drug (post-treatment only). Participants will complete the survey tools with the aid of the researcher. All tools are short and easy to complete, which minimizes patient burden. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00316563
Study type Interventional
Source AHS Cancer Control Alberta
Contact
Status Completed
Phase Phase 2
Start date August 2006
Completion date November 2009

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