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Gan To Kagaku Ryoho · Sep 2010
[A phase II clinical study of once-a-day fentanyl citrate patch in patients with cancer pain--switching from once-every-three-days fentanyl patch to once-a-day fentanyl citrate patch].
- Toyo Miyazaki, Akiyoshi Namiki, Setsuro Ogawa, Toshimitsu Kitajima, Yutaka Masuda, Yasuhide Iwao, Eiji Uchida, Masako Iseki, Motohiro Matoba, and Takahiro Hashizume.
- The Tokyo Clinic, Japan.
- Gan To Kagaku Ryoho. 2010 Sep 1;37(9):1747-52.
AbstractWe examined the efficacy and safety of a new transdermal fentanyl citrate patch (HFT-290), which was applied once daily in patients with cancer pain who were receiving a stable dose of once-every-three-day application transdermal fentanyl patch [TDF (72 hr)]. After TDF (72 hr) was applied for three days at the same dose used before starting the study, treatment was switched to HFT-290 (once daily) for 9 days. The analgesic effect was judged with a 5-point scale based on each patient's assessment of pain on a 100-mm visual analog scale (VAS). Seventy-eight patients were enrolled. The efficacy rate (95% confidence interval) of the analgesic effect at the time of final removal of HFT-290 (the primary efficacy end-point) was high at 83.9% (71.7-92.4%; 47/56 patients). Furthermore, based on the shift of the VAS, good pain control was achieved after switching. All adverse drug reactions were either mild or moderate, and the main reactions were those commonly observed with opioid analgesics. No respiratory depression was observed. HFT-290 demonstrated good tolerability after switching from TDF (72 hr) and provided stable pain control.
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