Yes Dr. Moro talked about this.
I am confused though. I did a search on Gamma + Cancer and found many trials performing this function. Some with Biomarkers being injected. The link is below. I also would believe that the 40k number was for trials not per person in the real world. I.E a prototype car cost a bunch. Mass production is a different deal.
Click here: Search of: gamma | cancer - List Results - ClinicalTrials.gov