Fibrosis of Extraocular Muscles, Congenital, 1, also known as fibrosis of extraocular muscles, congenital, 3b, is related to fibrosis of extraocular muscles, congenital, 2 and moebius syndrome, and has symptoms including cachexia, cyanosis and dyspnea. An important gene associated with Fibrosis of Extraocular Muscles, Congenital, 1 is KIF21A (Kinesin Family Member 21A), and among its related pathways/superpathways are ERK Signaling and Signal Transduction. The drugs Amoxicillin and Magnesium oxide have been mentioned in the context of this disorder. Affiliated tissues include eye and liver, and related phenotypes are intellectual disability and kyphosis