The bone scan finding is new, so it takes times to understand its clinical benefit.
I get that, PFS and OS take lots of time.
But that is not what I find perplexing.
I would think that there should be lots of ways to analyze more precisely what is happening at the bone level. Physical, chemical, radiological, etc. I would not think that would take a lot of time.
ij
It is astonishing what foolish things one can temporarily believe if one thinks too long alone ... where it is often impossible to bring one's ideas to a conclusive test either formal or experimental. J.M. Keynes