Since yestreday, they are and will be having it full scope.

Boris Kluyev, lung cancer

Emmanuil Vitorgan, lung cancer
Both lung cancers are still not 4-th stage,

Valentin Gaft, Parkinson's.
Here only slowing down, and helping his stroke, is expected, so far Parkinson's seems to be way more severe, than any brain cancer - at still treatable stage.
Cancer is just "swollen karma", powering abnormal cells, which have advantage over normal cells, in cancer specific energy situation, and corresponding metabolic pattern.