The BBC has a bit more on the leading edge in cancer research and treatment:

Cancer is entering a “new era” of personalised medicine with drugs targeted to the specific weaknesses in each patient’s tumour, say doctors…

The idea of precision medicine is to test every patient’s tumour, find the mutations that have become essential for it to survive and then select a targeted drug to counter-act the mutation – killing the tumour…

a revolution in genetics – allowing scientists to rapidly and cheaply interrogate a cancer’s corrupted DNA – is leading to huge excitement about a new generation of precision drugs.