Objective: To evaluate the overall safety profile and clinical effectiveness of tramadol hydrochloride/acetaminophen (TA) combination tablets in Japanese patients with chronic noncancer pain unrelieved by non-opioid drugs for up to 12 weeks in real-world practice. Research design and methods:This survey was a multicenter, prospective, longitudinal registry on the use of TA as a newly initiated pain treatment for chronic noncancer pain incurable by non-opioid analgesics that was conducted under the Good Post Marketing Study Practice regulation controlled by the Japan Ministry of Health, Labor and Welfare. Collected data included socio-demographics, treatment information, incidence of adverse drug reactions (ADRs), numerical rating scale for intensity of pain, EuroQol-5D (EQ-5D) scale, and physician's global impression (PGI) during the 12 week observation period. Results:A total of 1316 patients were registered. ADRs were reported in 259 patients (20.5%); most events were nonserious (99.4%), including nausea (n ¼ 87 [6.9%]), constipation (n ¼ 63 [5.0%]), dizziness and somnolence (n ¼ 29 [2.3%] each), and vomiting (n ¼ 21 [1.7%]). No event related to drug dependence or respiratory depression was reported. In addition, 82.8% of patients showed acceptable effectiveness based on PGI at Week 4. Numerical rating scale for intensity of pain and EQ-5D utility scores were improved by À2.7 (SD 2.3) and 0.16 (SD 0.20) at Week 4, respectively, and the improvement was maintained until Week 12. Conclusion:This is a first report to evaluate the risk-benefit profile of TA in Japanese real-world practice using large size registry data. It is suggested that the favorable risk-benefit balance of TA was confirmed for patients with chronic noncancer pain unrelieved by non-opioid drugs in real-world practice. Limitations of this study were those inherent to open-label and non-interventional study designs.
BackgroundQuality of life (QoL) is routinely assessed and evaluated in medical research. However, in Japan, there is a lack of solid cutoff criteria for evaluating QoL improvement in chronic noncancer pain management. The present study was conducted to identify the minimal clinically important change (MCIC) of the Japanese version of EuroQol-5D 3L(EQ-5D) utility score and numeric rating scale (NRS) with an emphasis on chronic noncancer pain.MethodsThe data source for this post hoc research was the post-marketing surveillance (PMS) data for a tramadol/acetaminophen combination tablet, which was previously conducted in real-world settings. The parameters extracted from the PMS data were sociodemographic characteristics, NRS, EQ-5D, and dichotomous physician’s global impression of treatment effectiveness (PGI). The optimal cutoff points of MCIC for EQ-5D utility and NRS scores were evaluated using receiver operating characteristics (ROC) analysis. An anchor-based approach using PGI was applied.ResultsData of 710 patients with chronic noncancer pain were extracted from the PMS database. The NRS score decreased by 2.7 (standard deviation, 2.3) points, whereas the EQ-5D score increased by 0.16 (0.20) points at 4 weeks from baseline. The changes from baseline in NRS and EQ-5D were significantly correlated (r = 0.53, p < 0.001). The estimated optimal cutoff points of MCIC for EQ-5D and NRS were 0.10 and −2.0 points, respectively. The area under the curve of ROC was > 0.80 in both analyses.ConclusionThese results demonstrated novel cutoff criteria for the Japanese version of EQ-5D, focusing on patients with chronic noncancer pain. The obtained criteria were fairly consistent and can be confidently utilized as an evaluation tool in medical research on chronic noncancer pain in Japan, with additional functionality and usability for QoL assessment in pain management practice.Trial registrationThe data source of this post hoc research was a PMS study with the identifier number UMIN000015901 at umin.ac.jp, UMIN clinical trial registry (UMIN-CTR).
Objective: The purpose of this study was to discuss the safety, treatment profile, and clinical effectiveness of 12-month treatment with fentanyl patch (FP), a strong opioid, in medical practice in Japan under the risk minimization action plan (RMAP). Methods: Patients with moderate-to-severe chronic noncancer pain who had switched to FP from another opioid were registered to take this survey to assess adverse drug reactions (ADRs), therapeutic effect, and pain intensity for up to 12 months. Results: A total of 517 patients were enrolled, and 499 patients (male, 50.9%; mean [SD] age, 63.0 [15.4] years) were included in the safety population. During the 12-month observation period, an ADR occurred in 262 patients (52.5%); most frequent ADRs included nausea (24.2%), somnolence (22.4%), constipation (18.2%), vomiting (9%), and dizziness (4.6%). The prespecified priority survey items, including respiratory depression, drug dependence, and drug withdrawal syndrome, occurred in 2 (both nonserious), 3 (all serious), and 9 (all serious) patients, respectively. In 418 patients from the efficacy population, the response rate was 77.3%, the rate of achievement of the therapeutic goal was 64.5%, and the visual analog scale (VAS) scores for pain severity decreased by 22.3 (26.9) mm. Conclusion: Our results identified a reasonable risk-benefit profile for the management of moderate-to-severe chronic noncancer pain in patients previously treated with opioids under long-term treatment with FP under the RMAP. Respiratory depression, drug dependency, and drug withdrawal were rarely observed even under the RMAP in Japan. &
A small amount of the tertiary phenolic base, m.p. 128°, isolated from Nandina domestica f. shinananten HORT. (Japanese name " Shina-nanten "), which was reported previously, has been identified as isoboldine (I).
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