Myopathy, Mitochondrial Progressive, with Congenital Cataract and Developmental Delay, also known as congenital cataract-progressive muscular hypotonia-hearing loss-developmental delay syndrome, is related to mitochondrial disease and congenital cataract-progressive muscular hypotonia-hearing loss-developmental de. An important gene associated with Myopathy, Mitochondrial Progressive, with Congenital Cataract and Developmental Delay is GFER (Growth Factor, Augmenter Of Liver Regeneration). Affiliated tissues include eye and globus pallidus, and related phenotypes are ptosis and hypotonia