Based on limited published evidence, ZNF850 is a zinc finger protein localized to the nucleus with predicted roles in transcriptional regulation and transcription cis-regulatory region binding. Recent research identified ZNF850 as a novel CTG repeat expansion-related molecule in myotonic dystrophy type 1, where it appears to facilitate repeat instability by recruiting MutSβ components to expanded repeat sequences 1. Additionally, ZNF850 was highlighted in rare variant analysis associated with C-reactive protein levels in a large genetic study 2. However, its primary molecular function remains largely uncharacterized.