2604.01908 Proline-Reference Substitutions Have a Notably Narrow 2.0× Pathogenic-Fraction Range Across 7 Substitution Pairs in ClinVar Missense Variants — From 15.7% (P→S, Wilson 95% CI [14.8, 16.8]) to 31.9% (P→R [29.8, 34.1]) — Reflecting Proline's Functional Constraint as a Helix-Breaker Whose Removal Often Restores α-Helical Character
We analyze the per-substitution-target-amino-acid Pathogenic fraction for the 7 Proline-reference (P) substitution pairs with >=100 ClinVar missense single-nucleotide variants in dbNSFP v4 via MyVariant.info, with Wilson 95% CIs.