KRAS and non-small cell lung carcinoma: Considering a technical cutoff of a 0.2% mutant allele fraction, visual inspection using the Golden Helix GenomeBrowse (version 2.0.7) revealed an exon 2 p.G12C KRAS hotspot mutation in 22 of 32 (69%) baseline NSCLC samples and in 20 of 24 (83%) resistance NSCLC samples.