CKD Stage 4

The goal of this clinical trial is to evaluate safety, tolerability, and how CTAP101 Capsules work to treat Pediatric Participants with Secondary Hyperparathyroidism, Stage 3 or 4 Chronic Kidney Disease and Vitamin D Insufficiency. The main questions it aims to answer are: 1. To assess the pharmacokinetics (PK) and Pharmacodynamics (PD) of CTAP101 Capsules 2. To investigate the safety and tolerability of CTAP101 Capsules Participants will take a daily dosage of CTAP101 Capsules at bedtime for 8 weeks.

The goal of this clinical trial is to evaluate whether dapagliflozin can reduce the risk of worsening kidney function or death from cardiovascular or renal causes in adults with advanced chronic kidney disease (CKD), with or without type 2 diabetes. The main questions it aims to answer are: 1. Does dapagliflozin reduce the rate of decline in kidney function or progression to end-stage kidney disease in adults with advanced CKD? 2. Does dapagliflozin reduce the risk of death from cardiovascular or renal causes in patients with advanced CKD? Researchers will compare dapagliflozin to a placebo to see if dapagliflozin improves kidney and cardiovascular outcomes in this high-risk population.

This is a single center, non-randomized, non-controlled open-label phase 1b/2a trial of performing sequential αβdepleted-HSCT and KT in patients requiring KT to prevent kidney rejection post-KT, in the absence of any post-KT immunosuppression, to abrogate the need for lifelong immunosuppression, the risk of chronic rejection and, ultimately, the need for repeated transplantation.