One of Pfizer Inc.’s last decisions of 2021 was to shell out $6.7 billion for San Diego’s Arena Pharmaceuticals Inc., a deal centered around the pipeline inflammatory disease pill etrasimod. A potential successor to Xeljanz (tofacitinib), the price New York-based Pfizer paid suggests blockbuster potential for etrasimod. Phase III results announced March 23 suggest Pfizer’s big acquisition, the fifth largest in biopharma in 2021, was money well spent.

Huadong Medicine Co. Ltd.’s wholly owned subsidiary Hangzhou Zhongmei Huadong Pharmaceutical Co. Ltd. has acquired Asia-Pacific rights to two drugs from Kiniksa Pharmaceuticals Ltd. in a deal worth up to $662 million. “This collaboration aims to bring Kiniksa’s therapeutics to patients in the Asia Pacific Region suffering from severe autoimmune and inflammatory diseases,” said Sanj Patel, chairman and CEO of Kiniksa. “The collaboration also provides nondilutive capital, cost-sharing, and resources for clinical trials to accelerate our drug development and commercialization efforts.”