Foix

Researchers are conducting a prospective, multicenter cohort study to follow children with idiopathic nephrotic syndrome INS, a rare kidney disease. The study aims to collect data on pediatric patients treated by pediatric nephrologists in France and its overseas territories to better understand the diseases characteristics and support future clinical trials. The study involves regularly recording medical, biological, psychological, and social data through routine clinical follow-ups, hospitalizations, and consultations. Additionally, annual telephone interviews will be conducted for patients in remission. Quality of life, treatment adherence, and treatment impact questionnaires will also be collected. A biobank is established to collect blood, urine, hair, and nail samples at the disease onset before immunosuppressive treatment begins. Participants will be followed from disease onset until age 18 or transfer to adult nephrology care. Data is collected via a secure website, medically validated and entered by clinical research staff. The main outcome is the number of cases included and their characteristics over two years. Participation involves routine care visits, interviews, and questionnaires, with continued monitoring planned through the study period ending in 2048.