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Ref Type Journal Article
PMID (26695442)
Authors Yong K, Cavet J, Johnson P, Morgan G, Williams C, Nakashima D, Akinaga S, Oakervee H, Cavenagh J
Title Phase I study of KW-2478, a novel Hsp90 inhibitor, in patients with B-cell malignancies.
Journal British journal of cancer
Vol 114
Issue 1
Date 2016 Jan 12
URL
Abstract Text KW-2478 is a novel, non-ansamycin, non-purine heat-shock protein 90 (Hsp90) inhibitor.In this phase I, multicentre study, KW-2478 was administered intravenously over 1 h at doses ranging from 14 to 176 mg m(-2) once daily on days 1-5 of a 14-day cycle in a standard 3+3 design in 27 patients (22 with multiple myeloma and 5 with non-Hodgkin lymphoma). Patients enrolled had relapsed/refractory disease previously treated with ⩾2 regimens.There were no dose-limiting toxicities, thus the maximum-tolerated dose was not reached. KW-2478 was well tolerated and did not manifest significant retinal or ocular toxicity. The most common treatment-related adverse events were diarrhoea (33.3%), fatigue (29.6%), headache (25.9%), hypertension (22.2%), nausea (14.8%), vomiting (7.4%), and dizziness (7.4%). Plasma concentrations peaked at the end of infusion and decayed in a biphasic manner with a terminal half-life of ∼6 h. Target inhibition was inferred from the increase in Hsp70 levels in peripheral blood mononuclear cells at doses ⩾71 mg m(-2). Twenty-four of 25 (96%) evaluable patients showed stable disease, with five being free of disease progression for ⩾6 months.Preliminary clinical response data were encouraging and warrant further investigation of KW-2478 in combination regimens for relapsed/refractory B-cell malignancies.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown multiple myeloma not applicable KW-2478 Phase I Actionable In a Phase I clinical trial, KW-2478 demonstrated safety and preliminary efficacy in patients with multiple myeloma, with 95.2% (20/21) of patients achieving stable disease (PMID: 26695442). 26695442
Unknown unknown non-Hodgkin lymphoma not applicable KW-2478 Phase I Actionable In a Phase I clinical trial, KW-2478 demonstrated safety and preliminary efficacy in patients with non-Hodgkin lymphoma, with 100% (4/4) of patients achieving stable disease (PMID: 26695442). 26695442