Proliferation assays, to confirm the ability of bispecific antibodies to inhibit cell proliferation of the pancreatic cell line KP4, driven by a hepatocyte growth factor (HGF)-MET autocrine loop, and the H1975 lung cancer cell line, driven by a double mutant EGFR (L858R and T790M) and 4. The gene discussed is EGFR; the disease is lung cancer.