A: The variant NC_000021.9:g.45504529A>C in gene SLC19A1 is classified as 'Likely_benign' for not_provided|COL18A1-related_disorder|Knobloch_syndrome. Molecular consequence: SO:0001819: synonymous_variant. Variant type: single_nucleotide_variant. Disease database links: MedGen:C3661900|.|MONDO:MONDO:0800166,MedGen:C1849409,OMIM:PS267750,Orphanet:1571. Review status: criteria provided, multiple submitters, no conflicts.