Classification rationale
1
The PTEN NM_000314.8:c.548del (NP_000305.3:p.(Lys183ArgfsTer16), p.(K183Rfs*16)) variant has been observed in somatic cancer databases once in COSMIC and has been reported in ClinVar as Pathogenic by a clinical laboratory.
clinvar ↗2
This variant is absent from gnomAD v2.1 and gnomAD v4.1, with an observed allele frequency of 0, which is below the PTEN Expert Panel PM2 threshold of <0.00001 (0.001%).
gnomad_v2 ↗ gnomad_v4 ↗ cspec ↗3
This variant is a frameshift predicted to create a premature termination codon, and because c.548 is upstream of the PTEN Expert Panel p.D375 (c.1121) truncation threshold in transcript NM_000314.8, the finding is consistent with full-strength PVS1.
cspec ↗4
SpliceAI predicts no significant splice impact for this variant, with a maximum delta score of 0.03.
spliceai ↗