An Egyptian patient with Schwartz-Jampel syndrome type I and new ocular findings

Schwartz Jampel syndrome is a rare autosomal recessive disease with distinctive clinical features, myotonia and skeletal deformities. Diagnosis is based on clinical findings, electromyogram showing myotonia and radiological findings of platyspondyly, vertebral coronal cleft and metaphyseal and epiphyseal changes of long bones. Ocular manifestation is a part of the syndrome and include blepharospasm, cataract, subluxation of lens and myopia. The disease is caused by mutations of HSPG2 gene at chromosome 1p36.1 causing deficiency of Perlecan protein and manifested as mild childhood type (type IA) and severe congenital type (type IB). The aim of this report is to describe an Egyptian patient with Schwartz Jampel syndrome type IB and retinal pigment epithelial atrophy. As far as our knowledge, this ocular finding was not reported before.