Comment by bearjaws

Chemotherapy for 3-4 months is around $200,000 - $400,000.

You will not see a price reduction, if it doesn't require chemotherapy or significantly reduces the number of rounds of chemotherapy, this drug will cost $150k+ for full treatment.

All of this assumes side effects are better than chemotherapy. Given chemotherapy care plans are some of the most arduous, it will be hard to be worse than chemo.