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R-Tech Ueno Completes Phase 2a Clinical Study of RK-023 to Treat Androgenetic Alopecia

Mon, 01/24/2011 - 1:34am
Bio-Medicine.Org

TOKYO, Jan. 24, 2011 /PRNewswire/ -- R-Tech Ueno, Ltd. is pleased to announce that the Phase 2a clinical study of RK-023 to treat androgenetic alopecia (note 1) was completed by January 21, 2011.

Our company focuses on the area of no topical prescription drug in the market of androgenetic alopecia treatment and has developed a new topical drug. The Phase 2a clinical study of RK-023 for androgenetic alopecia treatment was performed in 48 patients with mild-to-moderate androgenetic alopecia, adult males aged 44 or less, to evaluate safety and pharmacokinetics, and efficacy.  RK-023 was applied repeatedly for 13 weeks.

This clinical study was a double-masked (Note 2), randomized and placebo-controlled (Note 3) study under Good Clinical Practice (GCP), and RK-023 was applied 2 mL each to a hair-thinning part of scalp twice daily in the patients with androgenetic alopecia. Laboratory tests, vital signs (blood pressure, pulse rate, body temperature and respiratory rate) and electrocardiogram were examined as the safety assessment.  Concentrations of RK-023 and its main metabolite in plasma were determined as a pharmacokinetic study. Dermatologic examination for the degree of baldness, global photo assessment, subject self-assessment and phototrichogram (Note 4) were examined as the efficacy assessment.

Forty-eight patients (24 cases of the RK-023 group and 24 cases of the placebo group) were enrolled in this study. There was no severe adverse event. The frequency of mild adverse events was equal in both groups. In pharmacokinetic study, the main metabolite of RK-023 was slightly detected in plasma of only one patient. This showed that the transdermal absorption of RK-023 from the scalp was low. In the efficacy assessment, the RK-023 group showed possibility of improvement in global photo assessment and in numbers of anagen hair (Note 4) from the baseline compared with the placebo group.

The president of R-Tech Ueno, Yukihiko Mash

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