A study to evaluate changes over time in renal function from baseline (time of conversion) up until five years post conversion in kidney transplant patients converted from tacrolimus twice daily (BD) formulations to a once daily formulation as Advagraf.

This is a multicenter long-term (up to five years post-conversion), non-interventional registry in kidney transplant patients who have been converted from tacrolimus BD to Advagraf. Centers that are providing medical care for kidney transplant patients who may convert patients from tacrolimus BD to Advagraf will be identified and requested to approach patients for consent to participate.

Inclusion Criteria:

• Adult kidney transplant patients who are on tacrolimus BD and identified for conversion to Advagraf. Patients will only be approached about participating in the registry after their physician has made the decision to convert them to Advagraf. Patients previously treated with Advagraf and who have stopped for any reason will not be excluded from the registry provided that the physician has decided to convert.

Exclusion Criteria:

• Patients currently taking Advagraf treatment

Kidney transplant recipients

Access to anonymized individual participant level data will not be provided for this trial. Further details on Astellas' data sharing policy can be found at https://www.clinicaltrials.astellas.com/transparency/.