Breakthrough Dyspnea Fentanyl Study in Cancer Patients

The goal of this clinical research study is to learn if fentanyl given under the skin can reduce shortness of breath in cancer patients. Researchers also want to learn if it can help to improve your physical function. In this study, fentanyl will be compared to a placebo. Fentanyl is commonly used for treatment of cancer pain. It is believed to help patients with their shortness of breath as well. A placebo is not a drug. It looks like the study drug but is not designed to treat any disease or illness. It is designed to be compared with a study drug to learn if the study drug has any real effect.