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 wildtype 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.