My trusty Yahoo PSC group set in the latest FDA alert. It just happens to be on Rapamune. The anti-rejection medication they had switched Big Bird to back in February. Apparently it has caused issues in kidney patients that were switched from some other anti-rejection to Rapamune.
If you are taking another anti-rejection medication and your doctors want to switch you, PLEASE question them until all your concerns are answered.
You can read the full FDA alert here.