Endoxifen: A new, protein kinase C inhibitor to treat acute and mixed mania associated with bipolar I disorder.

OBJECTIVES: Endoxifen is a protein kinase C inhibitor. The objective of the present phase III study was to demonstrate the safety and efficacy of endoxifen in treating bipolar I disorder (BPD I) patients. METHODS: A multicenter, double-blind, active-controlled study was conducted using a daily dose of 8 mg endoxifen compared to 1000 mg divalproex, the current standard treatment, in patients with BPD I acute manic episodes with/without mixed features. The primary endpoint of our study was the mean change in total Young Mania Rating Scale (YMRS) score at day 21. RESULTS: Endoxifen (n = 116) significantly (p < 0.0001) reduced total YMRS score (from 33.1 to 17.8. A significant (p < 0.001) improvement in Montgomery-Åsberg Depression Rating Scale (MADRS) score was observed for endoxifen (4.8 to 2.5). Early time to remission of the disease was observed with endoxifen compared to divalproex. None of the patients required rescue medication and there was no drug-associated withdrawals. Changes in Clinical Global Impressions-Bipolar Disorder and Clinical Global Impression-Severity of Illness scores showed that treatment with endoxifen was well-tolerated. CONCLUSIONS: Endoxifen at a low daily dose of 8 mg was as efficacious and safe in patients with BPD I acute manic episodes with/without mixed features.

Efficacy and safety of nanosomal docetaxel lipid suspension based chemotherapy in gastric and gastroesophageal junction adenocarcinoma.

The current retrospective multicenter study evaluated the efficacy and safety of nanosomal docetaxel lipid suspension (NDLS; DoceAqualip) based chemotherapy in patients with gastric and gastroesophageal junction (GEJ) adenocarcinoma. The medical charts of patients with gastric and GEJ adenocarcinoma, who were treated with NDLS (50-75 mg/m2; 3 weekly cycles) based chemotherapy and followed-up from April 2014 to September 2018, were analyzed. The study endpoints included overall response rate (ORR) and disease control rate (DCR) in neoadjuvant and metastatic settings. Overall survival (OS) and safety were also evaluated. Of the 43 patients with gastric (n=39) and GEJ (n=4) adenocarcinoma, efficacy evaluation was available in 35 (neoadjuvant, 17/18 patients; metastatic, 18/25 patients). In the neoadjuvant setting, an ORR of 58.82% and a DCR of 94.11% were observed, whereas in the metastatic setting, the ORR was 77.77% and the DCR was 83.33%. In the neoadjuvant setting, at a follow-up ranging from 0.7 to 41.2 months, the median OS was not reached. In the metastatic setting, the median OS was 31.9 months at a follow-up ranging from 0.2 to 50.3 months. At least one adverse event (AE) was reported in 24 patients. Anemia, lymphopenia and thrombocytopenia were the most common hematological AEs, while nausea, vomiting and weakness were the most common non-hematological AEs. NDLS based treatment was well-tolerated without any new safety concerns. Overall, NDLS-based chemotherapy was effective and well-tolerated in the management of gastric and GEJ adenocarcinoma.

Efficacy and Safety of Nanosomal Docetaxel Lipid Suspension-Based Chemotherapy in Sarcoma: A Multicenter, Retrospective Study.

OBJECTIVE: To evaluate the efficacy and safety of nanosomal docetaxel lipid suspension (NDLS, DoceAqualip) based chemotherapy in patients with sarcoma. METHODS: In this retrospective, multicenter (6 centers), observational study, we analyzed the medical charts of adult patients of either sex, who were treated with NDLS (75 mg/m2 in 3-weekly cycles) based chemotherapy for the treatment of sarcoma. The efficacy outcomes were overall response rate (ORR: complete response (CR) + partial response (PR)) and disease control rate (DCR: CR + PR + stable disease (SD)) in patients who received NDLS-based chemotherapy in neoadjuvant and metastatic settings. Overall survival (OS) and safety were evaluated for all settings. RESULTS: Of 11 patients (neoadjuvant: 1, adjuvant: 3, and metastatic: 7) in this study, majority had leiomyosarcoma (63.6%, 7/11) followed by extraskeletal myxoid chondrosarcoma (EMC), high grade pleomorphic sarcoma of mandible, malignant fibrous histiocytoma of right thigh, and osteosarcoma of femur (9.1% each, 1/11 each). NDLS plus gemcitabine combination was used in 10 patients (90.9%), and NDLS plus cyclophosphamide was used in one patient with EMC (9.1%). Efficacy evaluation was performed for 7 patients (neoadjuvant: 1/1; metastatic: 6/7). Complete response was reported in one patient (soft tissue sarcoma of mandible) treated in neoadjuvant setting. In metastatic setting, ORR was 50% and DCR was 66.7% (CR: 16.7% (1/6), PR: 33.3% (2/6), SD: 16.7% (1/6)). At a median follow-up of 6.5 months (range: 0.06-20.2 months), median OS was not reached in neoadjuvant and adjuvant settings, but it was 15.8 months in metastatic setting. At least 1 AE was reported in 7 (63.6%) patients. Neutropenia, thrombocytopenia, lymphopenia, and anemia were the hematological AEs, whereas nausea, vomiting, and diarrhea were the most common nonhematological AEs. NDLS treatment was well tolerated without any new safety concerns. CONCLUSION: Nanosomal docetaxel lipid suspension-based chemotherapy was efficacious and well tolerated in the treatment of sarcoma. Further prospective trials are needed to confirm the data.

Analytical Comparison of the Originator Granulocyte-colony Stimulating Factor Filgrastim and its Biosimilars.

PURPOSE: Filgrastim, a recombinant human granulocyte colony-stimulating factor (rhG-CSF) produced in Escherichia coli, is indicated for treatment of neutropenia-related conditions in cancer patients. It has been marketed as Neupogen since 1991. In 2006, biosimilar rhG-CSF products have been approved in the European Union (EU). The aim of this study was to compare quality attributes of the originator filgrastim with its three biosimilars which came from the EU market in 2014 to verify whether their similarity is maintained since their market approval. MATERIALS/METHODS: Spectrophotometric analysis was used to determine protein content in analyzed products. Chromatographic and electrophoretic analyses were applied to verify the presence of high and low-molecular weight impurities. Secondary and tertiary structure of the drugs were investigated with circular dichroism and intrinsic fluorescence. Finally, biological activity of the drugs was assessed using cell proliferation assay. RESULTS: All products displayed protein content close to the label concentration with a ±6% variation. Two oxidized forms and a deamidated form were present at <0.5%. Levels of dimers and other high molecular-weight impurities were similar except for one product, which contained higher amount of the dimer. Profiles and levels of process-related impurities were comparable. The three-dimensional conformation of the molecules with respect to exposed tryptophan residues was similar. The relative potencies of the products were comparable to the reference standard with a ±2% variation. CONCLUSION: This study shows that a high level of similarity is maintained among originator and three biosimilar filgrastims up to 5 years from their first registration in the EU.