The KRAS p.Gly12Cys mutation frequency was 35.0% (n = 285 out of 813) of the KRAS-mutated cases, corresponding to 9% (285 out of 3,247) of all Brazilian NSCLC cases—ranging from 6.0% to 12.0% (Table 2; Fig 2). The gene discussed is KRAS; the disease is non-small cell lung carcinoma.