Abstract: This invention is related to the field of cancer treatment, more specifically to gene therapy in combination with a suitable chemotherapeutic agent. The present invention is related to a new oncolytic virus, which is able to inhibit the growth of malignant tumors or is a treatment of hyperproliferative mammalian cells, or is a treatment of cancer. The oncolytic virus works in combination with a suitable chemotherapeutic agent. More specifically, the present invention provides a pharmaceutical kit comprising an oncolytic adenovirus and a chemotherapeutic agent, and a method for the treatment of cancer.