Classification rationale
1
2
This variant is absent from gnomAD v2.1 and gnomAD v4.1, which supports rarity in the general population and is below the RUNX1 PM2_supporting threshold of 0.00005.
cspec ↗ gnomad_v2 ↗ gnomad_v4 ↗3
This variant is a truncating frameshift, and the RUNX1 MM-VCEP framework recognizes loss of function as an established disease mechanism for RUNX1; the available PVS1 assessment supports full-strength PVS1 for this variant.
cspec ↗4
SpliceAI predicts no significant splice effect, with a maximum delta score of 0.02, which is below the 0.20 threshold and is consistent with the RUNX1 PM5_supporting rule for downstream nonsense or frameshift variants.
cspec ↗ spliceai ↗