No ACMG/AMP criteria could be met or ruled out for NM_000077.5:c.290A>T due to a critical normalization failure during case preparation: VariantValidator was unavailable and the gene, genomic coordinates, protein consequence, and all downstream evidence sources (gnomAD v2.1/v4.1, ClinVar, REVEL, BayesDel, SpliceAI, COSMIC, OncoKB, Hotspots, literature) could not be resolved. The variant cannot be classified and requires complete re-analysis when normalization services are available.