Epilepsy, Progressive Myoclonic, 1b, also known as prickle1-related progressive myoclonus epilepsy with ataxia, is related to progressive myoclonus epilepsy and myoclonic epilepsy of unverricht and lundborg, and has symptoms including fine tremor An important gene associated with Epilepsy, Progressive Myoclonic, 1b is PRICKLE1 (Prickle Planar Cell Polarity Protein 1). Affiliated tissues include brain, and related phenotypes are ataxia and dysarthria