The present disclosure relates to the field of immunotherapy of cancer, in particular pancreatic ductal adenocarcinoma (PDAC). Means and methods for treatment of a population of PDAC patients suffering from PDAC tumours which express wild-type KRAS, HRAS or NRAS are disclosed. The claimed antibody is Nimotuzumab. The pancreatic cancer preferably does not contain KRAS mutations at position 12, 16, 61, 154.