A Case of Oculopharyngeal Muscular Dystrophy Due to a Novel Mutation of the PABPN1 Gene

We recently encountered a Korean patient with oculopharyngeal muscular dystrophy (OPMD). His major clinical manifestations were late onset bilateral ptosis, dysarthria, and dysphagia. Direct sequencing analysis of the PABPN1 gene demonstrated a heterozygous insertion of 9 bp sequence [(GCG)(GCA)(GCA); c.28insGCGGCA GCA], resulting in an in-frame insertion of 3 alanines (p. A10insAAA). To our knowledge, this is the first report of a genetically confirmed case of OPMD in Korea.