A: The variant NC_000021.9:g.43773901C>T in gene CSTB is classified as 'Uncertain_significance' for Unverricht-Lundborg_syndrome. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0009698,MedGen:C0751785,OMIM:254800,Orphanet:308. Review status: criteria provided, single submitter.