A: The variant NC_000019.10:g.45777490C>T in gene DMPK is classified as 'Uncertain_significance' for Steinert_myotonic_dystrophy_syndrome. Molecular consequence: SO:0001583: missense_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0008056,MedGen:C3250443,OMIM:160900,Orphanet:273. Review status: criteria provided, single submitter.