@almula, please see this post from @keggebraaten, a transplant coordinator at Mayo Clinic
https://connect.mayoclinic.org/discussion/covid-19-in-transplant-patients/?pg=26#comment-446964
She explains that the Mayo Transplant team is "just now getting the scientific information they need to decide if they will be recommending this vaccine for our transplant patients. Once they have a decision, we will let you all know. However, please remember that you should get the final word from the team that is caring for you. General information is fantastic to have, but every patient is unique and should rely on specific information from their current doctor. Also note – the information regarding COVID changes by the hour as the experts learn more about this virus. Something published today could be out of date tomorrow. You can get the most up-to-date information from your local health department or the CDC website.

Here is the latest general patient information about the COVID vaccine from Mayo Clinic. This is not specific the transplant patients.
– COVID-19 Vaccine https://mcforms.mayo.edu/mc3100-mc3199/mc3127-72.pdf