Struggling Swiss biotech buys back rights to blood pressure candidate

6 September 2023

Idorsia (SIX: IDIA) is to pay up to $345 million to reacquire rights to aprocitentan, a novel endothelin receptor blocker under development for hypertension.

Formerly part of Actelion, Idorsia was spun out as an independently-listed entity in 2017, when Johnson & Johnson (NYSE: JNJ) bought the rest of the company for $30 billion.

At the time, J&J agreed to co-develop aprocitentan, paying $230 million upfront for global rights on the strength of Phase II data.

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