The study is about collecting and studying samples like blood, biopsy tissue, and urine from organ transplant recipients and others for comparison. A biopsy is when a small piece of tissue is taken for testing. The goal is to learn how different patients react to transplant treatments and medicines, which can help doctors create better, personalized therapies with fewer side effects. Participants will donate samples that will be used for research, not to change their treatment. Even if the study finds something, it won't alter the person's current medical care. Any leftover samples might be saved for future research. This study helps in understanding how medicines affect the immune system, which protects the body from diseases.

• The study involves donating blood, tissue, and urine samples.
• No changes to your current treatment will be made based on study tests.
• Participants must be able to give consent, with help from a guardian if needed.