As longstanding hypertension, renal failure and hyperlipidemia of individuals SD60, SD84 and SD120 could be a cause of the arterial disease and are not present in individuals with SIOD at birth, we tested this hypothesis by studying the umbilical artery of a 15-week gestation fetus (SD133b) with biallelic SMARCAL1 mutations (Table1). The gene discussed is SMARCAL1; the disease is Schimke immuno-osseous dysplasia.