Effectiveness and Safety of Sublingual Fentanyl in the Treatment of Breakthrough Cancer Pain in Older Patients with Cancer: Results from a Retrospective Observational Study.

The study assessed sublingual fentanyl citrate (SFC) effectiveness and safety for breakthrough cancer pain (BtCP) in older patients. A multicenter, retrospective, observational study was conducted in three subgroups of cancer patients aged over 65 years with BtCP. The reports were collected by 20 oncologists across 12 hospitals.