We established a national multicenter study encompassing all dialysis units in Israel. Through this initiative, we collected and analyzed genetic and clinical data from over 3,000 individuals across the country, reflecting a broad range of ethnic backgrounds. Our research uncovered that a significant proportion of chronic kidney disease (CKD) cases, particularly among children, young adults, and specific ethnic groups such as Druze and Bedouins, have underlying genetic causes. Notably, we identified under-recognized, ethnicity-specific genetic causes of CKD in approximately 45% of children and 10-20% of adults with advanced kidney disease. This finding is crucial for enabling personalized medical management. Additionally, we developed patient-specific kidney organoids to investigate how these genetic mutations affect kidney function at the molecular level. Most importantly, we created a gene-based therapy approach targeting specific genes associated with CKD to halt disease progression. Collectively, these advances offer the potential for more targeted and effective treatments for CKD.