| Phenotype details |
severe intrauterine growth retardation, deafness, mental retardation, osteoporosis, partial gonadal dysfunction, relatively well-preserved cardiac function; insulin-like growth factor I deficiency; neurology normal; right radial fracture after minor trauma; no skeletal abnormalities; deep-set eyes, flat occiput, micrognathia; broad end phalanges, convex nails, hypermobility interphalangeal joints, restricted mobility elbows |