A: The variant NC_000021.9:g.45986646C>T in gene COL6A1 is classified as 'Uncertain_significance' for Collagen_6-related_myopathy|not_provided. Molecular consequence: SO:0001819: synonymous_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0100225,MedGen:CN117976|MedGen:C3661900. Review status: criteria provided, multiple submitters, no conflicts.