The TP53 c.1123C>A (p.Gln375Lys) variant has been observed in somatic cancers in COSMIC (4 occurrences) and has been reported in ClinVar as Likely benign by a single clinical laboratory.
clinvar ↗This variant is absent from gnomAD v2.1 and gnomAD v4.1, which supports TP53 PM2 at supporting strength and does not support BA1 or BS1.
gnomad_v2 ↗ gnomad_v4 ↗ cspec ↗In the TP53 VCEP functional worksheet, p.(Gln375Lys) is classified as Functional on Kato-class data and noLOF on Giacomelli-class data, with a pre-assigned BS3 code, supporting retained TP53 function.
cspec ↗Computational evidence is mixed: REVEL is 0.339 and BayesDel is -0.143957, the TP53 PP3/BP4 worksheet preliminarily lists BP4_moderate for c.1123C>A, but that worksheet also flags possible splice impact while the case-specific SpliceAI lookup reported a max delta score of 0.00, so PP3 and BP4 were not applied pending review of the discordant splice predictions.
spliceai ↗ cspec ↗