The interstitial pressure inside a tumor is often remarkably high compared to normal tissues and is thought to impede the delivery of chemotherapeutic agents as well as decrease the effectiveness of radiation therapy. (sciencedaily.com)
Also, it is currently in clinical trials in combination with other chemotherapeutic agents for the prevention of growth and metastasis of a number of cancers including glioma [121], acute myeloid leukemia (AML)[122], chronic lymphocytic leukemia (CLL)[123]. (thno.org)
To the best of my knowledge there is not a very successful hemotherapeutic or radiation protocol for this cancer at this time but dogs treated with chemotherapeutic agents do live a little longer than dogs that do not receive this treatment. (vetinfo.com)