Predictive, Diagnostic, Prognostic, Oncogenic evidence:
Predictive: The study discusses how KRAS mutations correlate with resistance to cetuximab, indicating that these mutations are predictive of treatment response. Specifically, it highlights that KRAS mutants had a significantly lower response rate compared to wild types, demonstrating the variant's role in predicting therapy efficacy.
Diagnostic: The abstract mentions that tumors are profiled for KRAS mutations before treatment, indicating that the presence of these mutations is used to classify patients for therapy. This suggests that KRAS mutations serve as a diagnostic marker in determining treatment eligibility for cetuximab.
Prognostic: The findings indicate that KRAS mutations are associated with worse overall survival and progression-free survival, independent of therapy. The reported median overall survival and progression-free survival rates for KRAS mutants versus wild types provide evidence of the prognostic implications of these variants.
Oncogenic: The study implies that KRAS mutations contribute to tumor behavior, as they are associated with a lack of benefit from cetuximab treatment. This suggests that KRAS mutations play a role in tumor development or progression, aligning with the definition of oncogenic variants.