A: The variant NC_000020.11:g.63673940_63673942del in gene RTEL1 is classified as 'Uncertain_significance' for Dyskeratosis_congenita,_autosomal_recessive_5. Variant type: Deletion. Disease database links: MONDO:MONDO:0014076,MedGen:C3554656,OMIM:615190. Review status: criteria provided, single submitter.