Efficiency of Intranasal Fentanyl in Patients with Breakthrough Cancer Pain in Daily Practice - Results of the German Non-Interventional Study with Instanyl® (GENISIS)

Objective: Breakthrough cancer pain (BTcP) affects 19-95% of cancer patients (dependent on the definition and methods used and the populations studied) and is associated with detrimental physical, psychological and social complications in affected individuals as well as with significant economic burden on society and the healthcare system. This study evaluated the analgesic efficacy and safety of intranasal fentanyl spray (INFS) for the treatment of BTcP in a clinical setting with a special focus on its impact on health care resource utilization.