Validation of a Fetal Urine Peptidome-based Classifier to Predict Post-natal Renal Function in Posterior Urethral Valves

Inclusion Criteria: * male singleton fetus with megabladder associated with urinary tract anomalies with or without dysplastic or hyperechogenic parenchyma detected in a first ultrasound; * megabladder confirmed in a second ultrasound; * collection of fetal urine taken during the routine management of the disease for the dosage of ß2-microglobulin; * written informed consent. Exclusion Criteria: * refusal to participate in the study; * person protected by law.