Why Repros Therapeutics (RPRX) Stock Is Surging Today

NEW YORK (TheStreet) -- Repros Therapeutics  (RPRX) surged in morning trading Thursday after the company announced its testosterone treatment showed superiority to an FDA-approved topical gel.

The company reported top-line results for the first of two identical studies that compared its treatment, Androxal, with the leading FDA-approved Androgel. Androxal showed superiority in multiple assessments, specifically the two co-primary endpoints of percent change from baseline in average sperm concentration and percent of subjects considered to be responders.

The study defines a responder as "an individual achieving a 24-hour average testosterone in the normal range with associated average sperm concentration >= 10 million/mL," according to the press release.

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Androxal also showed superiority in secondary endpoints, including change in the key pituitary signaling hormones LH and FSH.

The stock was up 10.21% to $20.07 at 9:59 a.m. More than 2.1 million shares had changed hands, compared to the average volume of 258,220.

RPRX Chart RPRX data by YCharts

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