In a rare event for the European biotech sector, Dutch/Belgian immunology specialist Argenx SE is to acquire a U.S. counterpart, Forte Biosciences Inc., in an all cash deal valued at $2.2 billion. The price of $77 per share is a premium of about 86% to Forte’s volume-weighted average price since it reported positive phase Ib data for the lead program FB-102 in vitiligo on July 9.