It's one thing. It's a mutation in the DNA that causes uncontrolled cell division. You unlock the key to that, you unlock everything. Anything else from these fucking science bros is just language games of classification.
EDIT: Apart from the thoughtful replies from TerminalEncounter and HiImThomasPynchon, the snark in the rest of the comments is through the roof. From the same people, btw, that will shout "ACAB right now," "guillotine capitalists right now!," "FALC right now," "gulag them all right now!" As though those are more realistic than what I'm envisioning. No wonder online/western leftists never get anything accomplished. Ironically, you're the behaving exactly like kind of people that would have made snarky comments in the past like "lol aboslish slavery, yeah I wish we could do that!" or "give women the right to vote, yeah if only it were that easy!" It's a weird kind of regressive reactionary thinking (except of course for things they personally want to get done, then it's "we can do it right now"). It's weird, with homelessness, the solution is "simply give them housing" but with this it's "it's more complicated honey..." Fucking pathetic...
I mean ... the first smallpox vaccine was developed in 1796.
Edit: But more seriously, medicine has a lot of these large descriptor categories that aren't terribly descriptive. Dementia being another big one that is slowly getting chipped away at as we research it. The general symptoms have many causes and not super great general treatments. As we start to understand the category better, specific causes get separated out and get their own names like Alzheimer's. And as we learn more we'll discover more different causes and treatments until the disease of 'Dementia' gets eradicated (hopefully).
The same thing is happening with Cancer but it's literally a category error to think that they will all have the same treatment just because they are all labelled 'Cancers'.