A: The variant NC_000019.10:g.48985862G>C in gene GYS1 is classified as 'Uncertain_significance' for Glycogen_storage_disease_due_to_muscle_and_heart_glycogen_synthase_deficiency|GYS1-related_disorder|Inborn_genetic_diseases. Molecular consequence: SO:0001583: missense_variant,SO:0001619: non-coding_transcript_variant. Variant type: single_nucleotide_variant. Disease database links: MONDO:MONDO:0012693,MedGen:C1969054,OMIM:611556,Orphanet:137625|.|MeSH:D030342,MedGen:C0950123. Review status: criteria provided, multiple submitters, no conflicts.