Functional characterisation of a novel class of in-frame insertion variants of KRAS and HRAS
[Paper-level Aggregated] PMCID: PMC6547725
Evidence Type(s): Functional
Summary: Mutation: p.Q22K | Summary: The p.Q22K mutation is associated with increased GTP loading, indicating an alteration in molecular or biochemical function.
Evidence Type: Functional Mutation: Gln61 | Summary: The residue Gln61 is involved in GTP hydrolysis and is likely affected by insertions that alter molecular interactions, impacting the protein's biochemical function. Additionally, insertions in Gln61 indicate alterations in molecular function related to GTP hydrolysis.
Evidence Type: Functional Mutation: p.Q61L | Summary: The functional consequences of the p.Q61L mutation in relation to RAS signaling indicate that it is a classic pathogenic missense mutation that may alter molecular function.
Evidence Type: Functional Mutation: p.G12V | Summary: The p.G12V variant alters the intrinsic dissociation rate of the nucleotide, shows reduced intrinsic GTP hydrolysis rates compared to wild type, and induces phosphorylation of ERK and AKT, indicating significant changes in molecular function and its role in RAS signaling pathways.
Gene→Variant (gene-first): KRAS(3845):p.Q22K RASA1(5921):Gln61 NRAS(4893):p.Q61L KRAS(3845):p.G12V
Genes: KRAS(3845) RASA1(5921) NRAS(4893)
Variants: p.Q22K Gln61 p.Q61L p.G12V