Rare Kidney Stone Consortium Patient Registry

This is a patient registry for people with rare kidney stone disorders: Primary Hyperoxaluria, Dent Disease, Cystinuria, and APRT Deficiency. Registries like this help researchers learn more about these conditions, track how they progress over time, and ultimately develop better treatments. You may be eligible if: - You have a confirmed diagnosis of Primary Hyperoxaluria, Dent Disease, Cystinuria, or APRT Deficiency - OR you have a sibling with one of these conditions (even if you have not been diagnosed yourself) - There is no age restriction — infants through adults may participate You may NOT be eligible if: - You do not have any of the four listed conditions and do not have a sibling with one of them Talk to your doctor to see if this trial is right for you.