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Antares Pharma Inc Announces Positive Results From VIBEX QuickShot Pharmacokinetic Study in Testosterone Deficient Men


Thursday, 20 Feb 2014 07:00am EST 

Antares Pharma Inc:Says positive results from a multi-center phase 2 clinical study evaluating the pharmacokinetic profile of testosterone enanthate administered once-weekly by subcutaneous injection at doses of 50 mg and 100 mg using the VIBEX QuickShot auto injector in testosterone deficient adult males.Twenty nine adult males with hypogonadism (low testosterone) and testosterone blood levels less than 300 ng/dL were randomized into two groups.The first group received 50 mg testosterone enanthate administered subcutaneously with the QuickShot auto injector once weekly for six weeks.The second group received 100 mg of testosterone enanthate using the same device and time sequence. The clinical study followed patients for four weeks after the last dose.The mean testosterone baseline for the 50 mg group was 214.6 ng/dL and 201.5 ng/dL in the 100 mg group. At week one, both doses produced normal mean total testosterone concentrations at 24 hours post-dose, 434 ng/dL in the 50 mg group and 572 ng/dL in the 100 mg group.During week six of the study when patients were already at steady state pharmacokinetic conditions, the 50 mg and 100 mg groups had average plasma testosterone values within the normal range at 422.4 ng/dL and 895.5 ng/dL, respectively.The study demonstrated rapid restoration, consistent maintenance of normal testosterone levels and dose proportionality of the 50 mg and 100 mg strengths. 

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18 Dec 2014