Any vesicoureteral reflux in which the cause of the disease is a mutation in the SOX17 gene. The disease is Monarch Disease Ontology entry MONDO_0013356 (vesicoureteral reflux 3). Also known as: SOX17 vesicoureteral reflux (disease), vesicoureteral reflux (disease) caused by mutation in SOX17, vesicoureteral reflux type 3.