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United Therapeutics to develop, sell Arena Pharma's hypertension treatment

Nov 15 (Reuters) - United Therapeutics Corp on Thursday signed a deal potentially worth up to $1.2 billion for the rights to develop and sell Arena Pharmaceuticals Inc's pulmonary arterial hypertension treatment, ralinepag.

The two companies said in a statement the deal for Arena's late-stage experimental treatment also includes milestone payments of up to $400 million based on certain regulatory events.

Arena will receive low double-digit tiered royalties on annual net sales of ralinepag, the companies said.

(Reporting by Aakash Jagadeesh Babu in Bengaluru)