Two years after signing a $1.6 billion partnership with Marengo Therapeutics Inc., Paris-based Ipsen SA is back at it again, this time teaming up for two additional assets that target “cold” tumors in a deal that could bring privately held Marengo $1.2 billion. “We do something really novel and innovative and I think it’s very important to continue to validate it,” Marengo CEO Zhen Su told BioWorld, adding that with the newest deal, “we see validation all around this … It’s a success on success.”