Compared with placebo in stage III EGFR-mutated NSCLC after chemoradiation, osimertinib [$898,107 (3.70 QALYs) and $49,565 (3.49 QALYs)] increased costs (efficacy) by $178,953 (0.56 QALYs) in the USA and $17,872 (0.51 QALYs) in China. Here, EGFR is linked to non-small cell lung carcinoma.