Trial miss double whammy sets back Sienna's acne program

31 July 2018

Shares in Californian dermatology specialist Sienna Biopharmaceuticals (Nasdaq: SNNA) closed down around 5% on Monday, after the firm announced two key trials had failed to meet their primary endpoints.

The firm admitted also that there is now a diminished likelihood of success in a third pivotal trial, due to read out later this year.

The studies have been testing acne candidate SNA-001, a topical medical product derived from the firm’s Topical Photoparticle Therapy technology.

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