EGFR and non-small cell lung carcinoma: On the other hand, liver OPD was rare in our patients (Table 2), which parallels the rarity of hepatic oligoprogression in EGFR-mutated NSCLC [4,5] and is in line with the lower immune reactivity and worse prognosis of hepatic metastases and hepatic oligoprogression in NSCLC [33,34,35].