Merus N.V., a clinical-stage immuno-oncology company, engages in developing bispecific antibody therapeutics. Its bispecific antibody candidate pipeline includes MCLA-128, which is in a Phase II clinical trial for the treatment of patients with metastatic breast cancer; and Phase I/II clinical trial for the treatment of gastric and non-small cell lung cancers. The company is also developing MCLA-117 that is in Phase I clinical trial for the treatment of patients with acute myeloid leukemia; and MCLA-158, which is in a Phase I clinical trial for the treatment of solid tumors with an initial focus on colorectal cancer. In addition, its research and development stage bispecific antibody candidates include MCLA-129, which is being developed in collaboration with Betta Pharmaceuticals Co. Ltd; MCLA-145, which is being developed in collaboration with Incyte Corporation; and clinical programs to explore new potential combination therapies or indication. The company was founded in 2003 and is