UCA1 and non-small cell lung carcinoma: And UCA1 mRNA expression level in patients who developed acquired resistance to EGFR-TKIs was significantly higher than in the baseline group with EGFR-TKI-sensitive NSCLC (0.58 ± 0.05 vs 0.21 ± 0.05, P = 0.0024; Figure 1B).