Correlation Study Between Clinical Phenotype and Pathology of Type 2 Diabetic Nephropathy

This study is looking at the relationship between how type 2 diabetic kidney disease appears in lab tests and symptoms versus how it looks under a microscope after a kidney biopsy. Researchers want to better understand the different forms this disease takes to improve diagnosis and care. **You may be eligible if...** - You are 18 years or older - You have been diagnosed with type 2 diabetes - You have signs of kidney problems such as protein in the urine or reduced kidney function - You have already had a kidney biopsy with a complete pathological diagnosis - You are willing to provide signed informed consent **You may NOT be eligible if...** - Your medical history is incomplete - You have another cause of kidney disease not related to diabetes - You have an inherited kidney disease - You have an autoimmune disease - You have a terminal cancer diagnosis with less than 6 months to live - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.