| A rare chromosomal anomaly syndrome, resulting from the partial deletion of the short arm of chromosome X. The disease has principle characteristics of classical Norrie disease (bilateral, severe retinal malformations and opacity of the lens leading to congenital blindness, on occasion associated with progressive sensorineural deafness and intellectual disability), microcephaly, hypotonia, psychomotor and growth delay and moderate to severe mental handicap. Clinical phenotype is highly variable and immunodeficiency, epilepsy and hypogonadism have also been reported. |
