Not knowing anything more about your condition, I'd say that you'd be fine with it.
However, if you are really serious about using the BTD for for fighting the cancer, there are so many Phytonutrients available these days that could be used instead.
There are other Biochemical/Metabolism reasons besides BTD, that I personally am against the Chlorella for the long-term.
There is a Blood-Type book specifically about Cancer, "Cancer: Fight It with the Blood Type Diet " ISBN: 0425200078