Welcome @mkhighpoint. I added your question to the Transplants group (https://connect.mayoclinic.org/group/transplants/) as well as the NETs group.

First I'll tag members like @angieklima @collielady and @dreams who also have experience with merkel cell carcinoma and can share their experiences with you.

You ask a very good, yet very specific question about the effect of taking immunotherapy while also on anti-refection medication. Does your oncologist communicate and coordinate treatment with your transplant team?