Hi Soulcyster,
We do not have frozen sperm from pre-cancer but we do have a frozen biopsy with sperm from after cancer treatment.
We have had 3 fresh ICSI cycles and 2 FET's - all negative. Please don't let this put you off as our problems are different. It was not until after cancer tx that my DH was found to be azoospermic.
Some partners of cancer survivors are able to have IUI (inseminations) rather than having to go the "whole hog" and go straight to IVF. This is only possible if you have lots of frozen sperm and the quality is OK.
Good luck! Please let me know if there is anything specific you would like to know.
With warmest regards,