Association between fluid infusions and the recovery from acute kidney injury in patients administered liposomal amphotericin B: a nationwide observational study.

Acute kidney injury (AKI) often develops during the administration of liposomal amphotericin B (L-AMB), a broad-spectrum antifungal drug. However, clinical recovery approaches for AKI patients administered L-AMB are not well established. This retrospective analysis used the data obtained from hospitals throughout Japan. AKI was defined as a ≥ 1.5-fold increase within 7 days or ≥0.3 mg/dL increase within 2 days in serum creatinine. AKI recovery was defined as a return to creatinine levels below or equal to those recorded before AKI onset. Ninety patients were assessed for recovery from AKI as per the three stages. The incidence of recovery from AKI regardless of its stage was higher, though not significant, in patients administered ≥10 mL/kg/day fluid for 7 consecutive days from AKI onset (63%) than in those who did not (35%, p = 0.053). However, if limited to AKI stage 1 patients, the former group had a significantly higher incidence of recovery (91%) than the latter group (50%, p = 0.017), even after adjusting for confounding factors (odds ratio: 10.135, 95% confidence interval: 1.148-89.513, p = 0.037). The daily fluid volume administered during the 7 consecutive days from AKI onset positively correlated with the recovery from AKI of all stages (p = 0.043). Daily consecutive fluid infusion from AKI onset may be associated with recovery from stage 1 AKI in patients administered L-AMB, with daily fluid volume positively correlating with the incidence of AKI recovery.

An Empirical Study of the Prescription Pattern of Drugs for Hematological Malignancies in Japan from 2010-2014.

The number of elderly patients with hematologic malignancies has been steadily increasing with the aging of society. However, little research has been conducted to evaluate the prescription status of drugs for such diseases in Japan. Therefore, the aims of this study were to identify the patient population currently being prescribed drugs for hematologic malignancies in Japan and the direction of drug development. To examine the prescription pattern of drugs for the treatment of hematological malignancies in Japan from 2010-2014, we used the IMS Japan Pharmaceutical Market database and the Japanese Society of Hematology Clinical Practice Guidelines, and for drug development status, we used ClinicalTrials.gov and the University Hospital Medical Information Network Clinical Trials Registry. We found a significant upward trend in prescriptions for molecular-targeted agents, which are typically prescribed over the long term, and a significant downward trend in chemotherapeutic agents, which are usually prescribed for the short term. We also found that recent drug development in hematological malignancies has focused on molecular-targeted agents. These results suggest that drug development should be directed toward anti-tumor agents in hematological malignancies that can help maintain and improve patients' QOL.

Drugs Targeted for Price Cutting in Japan: The Case of Price Revisions Based on the Divergence of Official Versus Delivery Prices.

BACKGROUND: Official drug prices have been set by the government and revised every other year in Japan. However, most drug prices are revised based on the price divergence rate of official and delivery prices every other year. This paper overviews how the drug price revision process works and reveals factors associated with price cutting, based on the price divergence rate. METHODS: Drugs approved as new molecular entities from 2005 to 2014 were selected for price cutting analysis, based on the price divergence rate. Logistic regression assessed the determinants of whether drugs were targeted for price cutting in 2016. Additionally, generic drugs approved from 2009 to 2013 and their off-patent drugs were also analyzed by multiple linear regression analysis to reveal determinants related to price divergence rates. RESULTS: From the targeted on-patent drugs, 90% were targeted for price revision based on the price divergence rate. Of these drugs, 23% were targeted for price cutting. Drugs whose characteristics are larger sales, lower cost/patient, being followers, and being longer in the market were more likely to be targeted for price cutting. The number of generic manufacturers is directly proportional to the price cutting of both generic and off-patent branded drugs. CONCLUSIONS: As drug price revision policy is under reconstruction in Japan, the characteristics of drugs targeted for price cutting shown in this study should be considered for establishing drug price revision policies that reflect market conditions adequately.