In this study, we propose to collect urine, blood and stool at time of any biopsy as well as during their routine post-transplant outpatient visits. Samples will be stored in the Gene Expression Monitoring (GEM) laboratory funded by Dr. Manikkam Suthanthiran’s NIH and Qatar National Research Fund support and will be used in future studies to test specific hypothesis related to transplant kidney dysfunction relating to rejection, chronic injury, viral and bacterial infections, immune status, complications of immune therapy and post-transplant malignancy.

Key eligibility:

• Awaiting or have undergone solid organ transplant and/or bone marrow transplant
• Age greater than 7 years and less than 90 years
• Ability to provide informed consent
• Detailed eligibility provided when you contact the study team