Oncogenic Transformation by Inhibitor-Sensitive and -Resistant EGFR Mutants
[Paper-level Aggregated] PMCID: PMC1240052
Evidence Type(s): Oncogenic, Predictive, Functional
Justification: Oncogenic: The text describes how mutations such as L858R and G719S in the EGFR gene can transform NIH-3T3 cells, leading to anchorage independence and tumor formation in immunocompromised mice, indicating their oncogenic potential. Predictive: The presence of activating EGFR mutations, including L858R and G719S, is associated with clinical responses to EGFR inhibitors like gefitinib and erlotinib in lung adenocarcinoma patients, suggesting these mutations can predict treatment outcomes. Functional: The study demonstrates that mutant EGFRs, including L858R and G719S, exhibit constitutive activation of downstream signaling pathways, such as STAT3 and Akt, indicating functional alterations in signaling due to these mutations.
Gene→Variant (gene-first): EGFR(1956):A750P EGFR(1956):D770_N771insNPG EGFR(1956):E749del EGFR(1956):G719S EGFR(1956):L858R EGFR(1956):L747_E749del A750P HRAS(3265):V12 EGFR(1956):D837A AKT1(207):serine/threonine
Genes: EGFR(1956) HRAS(3265) AKT1(207)
Variants: A750P D770_N771insNPG E749del G719S L858R L747_E749del A750P V12 D837A serine/threonine