Global Kidney Patient Trials Network

Inclusion Criteria: 1. Documented diagnosis of primary kidney disease 2. Regular visits (6-12 monthly) with a physician at a participating site that includes the monitoring of protein in urine and kidney function 3. eGFR \> 25 ml/min/1.73m2 4. ≥ 2 to ≥ 80 years of age 5. One of the following laboratory urine parameters within 12 months of screening meeting the values of: * Urine Albumin-to-Creatinine Ratio (UACR) \> 200 mg/g OR * Protein-to-Creatinine Ratio (PCR) \> 300 mg/g OR * Albumin Excretion Rate (AER) \> 200 mg/day OR * 24 hour Albumin Excretion \> 200 mg/day OR * 24 hour Urine Protein Excretion \> 300 mg/day 6. Willing and able to sign informed consent 7. Willing to be approached about participation in interventional research studies Exclusion Criteria: 1. Life-expectancy of less than 6 months 2. Currently receiving renal replacement therapy or planned to start in the next 6 months 3. Planned transplant in the next 6 months 4. Currently participating in a clinical trial involving investigational medicinal product (exception is participation in studies implemented through the GKPTN)