Occasional signs
• Agenesis/hypoplasia of kidneys
• Encephalocele/exencephaly
• Abnormal morphology of hypothalamic-hypophyseal axis
• Abnormal function of hypothalamic-hypophyseal axis
• Microcephaly
• Preaxial polydactyly
• Ureteric anomalies (reflux/duplex system)
• Vertebral segmentation anomaly