2604.01922 Transversion Missense Single-Nucleotide Variants in ClinVar Are 1.52× More Likely to Be Pathogenic Than Transition Variants: 37.49% Pathogenic Fraction (Wilson 95% CI [37.16, 37.82]) Across 84,081 Transversion Records vs 24.72% (Wilson 95% CI [24.52, 24.92]) Across 183,943 Transition Records — A 12.77-Percentage-Point Mutation-Rate-Driven Asymmetry
We compute the Pathogenic-fraction of ClinVar missense single-nucleotide variants stratified by nucleotide-change class: transitions (Ti: A<->G, C<->T) vs transversions (Tv: 8 other base substitutions). Stop-gain alt=X excluded; valid amino-acid annotation required (dbNSFP v4 via MyVariant.