'It's incredible, like science fiction': How a new wave of immunotherapy is eliminating cancers

OTOH...

In general, somewhere between 20% and 40% of patients respond to immunotherapy. That means a lot of patients – the majority, in fact – are opening themselves up to side effects, not to mention wasted time and hope, without much upside.

https://www.bbc.com/future/article/20260410-how-a-new-wave-of-immunotherapy-is-eliminating-cancers