For privately held Good Therapeutics Inc., founded in 2016 with a platform technology for developing context-dependent therapeutics, the plan had always been to seek a buyer for the first asset to emerge. One came along a little earlier than expected, as Roche Holding AG entered a merger agreement for Good, picking up preclinical-stage PD-1-regulated IL-2 program, in exchange for an up-front cash payment of $250 million.