Less than two months after scrubbing a phase III non-small-cell lung cancer trial of the bifunctional fusion protein immunotherapy bintrafusp alfa, Merck KGaA said a phase II test of the candidate in another indication, biliary tract cancer, has missed a predefined threshold that would have enabled a regulatory filing for it. Both studies are part of a rich alliance between Merck and licensee Glaxosmithkline plc.