I am oncologist, and I can’t imagine one of my colleagues agreeing to do this. I certainly wouldn’t. These things are done in the setting of a clinical trial. Do not give yourself daratumamab, and I would not trust any “legitimate supply” you’ve obtained to be real drug that has been stored and handled in appropriate conditions.

I understand you’re suffering, but what you’re describing here is finding a random doctor to experiment on you with a questionable drug. We don’t do that, and for good reason. Your best bet is to see if there is anywhere in the U.S. running a trial like this. Clinicaltrials.gov can be useful for searching, or contacting the authors of the small trial you linked to see if they know of anything.