RecruitingPhase 4Drug trialNeurocognitive Function Changes With Extended-Release Tacrolimus Among Older Kidney Transplant RecipientsThe objective of this randomized controlled study is to assess the neurocognitive outcomes between individuals using immediate-release (IR) tacrolimus (Prograf®) and those who were converted to extended-release tacrolimus (Envarsus XR) among older kidney transplant recipients (KTRs).