KRAS G12 isoforms exert influence over up-front treatments: A retrospective, multicenter, Italian analysis of the impact of first-line immune checkpoint inhibitors in an NSCLC real-life population.

Background: KRAS is commonly mutated in non-small cell lung cancer (NSCLC); however, the prognostic and predictive impact of each G12 substitution has not been fully elucidated. The approval of specific G12C inhibitors has modified the idea of KRAS "undruggability", and although the first-line standard consists of immune checkpoint inhibitors (ICIs) with or without chemotherapy, as suggested at ASCO 2022, the outcome in KRAS-mutated population is still controversial.

Methods: We retrospectively described the clinical and pathological characteristics of a homogeneous G12 mutated cohort of 219 patients treated in four Italian oncologic units.

Inflamed Tumor Phenotype as Predictor of Long-Term Response to Pembrolizumab in an EGFR-Mutated Non-Small Cell Lung Cancer (NSCLC) Patient with Acquired Resistance to Afatinib: a Case Report and Review of the Literature.

Treatment with immune checkpoint inhibitors (ICIs) that target the programmed cell death 1/programmed cell death ligand-1 (PD-1/PD-L1) axis is usually ineffective in patients with epidermal growth factor receptor (EGFR)-mutated advanced non-small cell lung cancer (NSCLC), either as first-line treatment or in later lines. By contrast, especially for patients with common EGFR mutations (exon 19 deletion/L858R point mutation), an orally bioavailable EGFR tyrosine kinase inhibitor (EGFR-TKI) is the best upfront therapy, being able to provide response rates well above 50% and a median progression-free survival ranging from 11 to 19 months, depending on whether a second-generation (e.g.