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Double-blind, randomized, placebo-controlled study of safety, tolerability, pharmacokinetics and pharmacodynamics of TAK-683, an investigational metastin analogue in healthy men.

ABSTRACT: AIMS: Two randomized, double-blind, placebo-controlled studies were performed to characterize the safety, tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) of the investigational metastin analogue, TAK-683, in healthy men. METHODS: We first investigated a single subcutaneous (s.c.) dose of TAK-683 (0.01-2.0 mg) in 60 subjects (TAK-683, n = 42; placebo, n = 18). We then assessed a single s.c. bolus of 0.03-1.0 mg TAK-683 on day 1, followed by a 0.01-2.0 mg day(-1) continuous infusion on days 2-13, to simulate a depot formulation, in 30 subjects (TAK-683, n = 25; placebo, n = 5) for 14 days. RESULTS: TAK-683 was well tolerated up to a dose of 2.0 mg day(-1) by continuous s.c. infusion for 14 days. Adverse events were similar between TAK-683 and placebo subjects at all dose levels. TAK-683 plasma concentrations generally increased in proportion to dose with single and continuous dosing, with steady-state concentrations achieved by day 2 of continuous dosing. TAK-683 at 2.0 mg day(-1) suppressed testosterone below castration level (<50 ng dl(-1)) in four of five subjects by day 7 of continuous dosing. Luteinizing hormone and follicle stimulating hormone concentrations were suppressed with TAK-683 continuous dosing compared with placebo by up to 70 and 43%, respectively, but this was not consistently dose-dependent. CONCLUSIONS: In healthy men, s.c. administration of TAK-683 was well tolerated at all dose levels. The PK profile of TAK-683 was favourable, and TAK-683 suppressed testosterone profoundly during continuous dosing. Further investigation of metastin analogues is warranted for the treatment of castration-resistant prostate cancer.

SUBMITTER: Scott G

PROVIDER: S-EPMC3579253 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature

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Double-blind, randomized, placebo-controlled study of safety, tolerability, pharmacokinetics and pharmacodynamics of TAK-683, an investigational metastin analogue in healthy men.

Scott Graham G Ahmad Irfan I Howard Katy K MacLean David D Oliva Cristina C Warrington Steve S Wilbraham Darren D Worthington Paul P

British journal of clinical pharmacology 20130201 2

<h4>Aims</h4>Two randomized, double-blind, placebo-controlled studies were performed to characterize the safety, tolerability, pharmacokinetics (PK) and pharmacodynamics (PD) of the investigational metastin analogue, TAK-683, in healthy men.<h4>Methods</h4>We first investigated a single subcutaneous (s.c.) dose of TAK-683 (0.01-2.0 mg) in 60 subjects (TAK-683, n = 42; placebo, n = 18). We then assessed a single s.c. bolus of 0.03-1.0 mg TAK-683 on day 1, followed by a 0.01-2.0 mg day(-1) continu ...[more]

PMID: 22803642

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Dataset Information

Double-blind, randomized, placebo-controlled study of safety, tolerability, pharmacokinetics and pharmacodynamics of TAK-683, an investigational metastin analogue in healthy men.

Publications

Double-blind, randomized, placebo-controlled study of safety, tolerability, pharmacokinetics and pharmacodynamics of TAK-683, an investigational metastin analogue in healthy men.

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