This is a randomized, double-blind, placebo-controlled, single ascending dose study conducted at one study center in Switzerland.
Four panels (A, B, C and D) of 8 male subjects (6 active and 2 placebo) each undergoing two investigation periods and receiving either single doses of PBTZ169 at increasing dose levels or a matching placebo. Subjects will participate in only one panel. Blocks of 4 subjects (3 under active treatment, 1 under placebo) will be investigated in parallel. Panels A and B are interleaved.
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