Perhaps if that group actually did something worthwhile, like, say, publically condemn and shame the pharmaceutical companies for not further financing the work going on at places like the University of Alberta because they can't figure out how to profit from it, I'd donate.
But they don't. So no. (And before anyone starts up any "you've obviously never been affected" arguments or anything like that, my father has cancer, his next door neighbour who is wonderful has cancer, and my father-in-law died of the disease too.)