KRT5 and non-small cell lung carcinoma: To further explore the function of hsa_circ_0017620 and KRT5 in NSCLC, we transfected si‐NC, si‐hsa_circ_0017620, si‐hsa_circ_0017620+pcDNA, and si‐hsa_circ_0017620+KRT5 into A549 and H460 cells and the results showed that compared with si‐NC groups, KRT5 mRNA and protein expression were significantly inhibited in si‐hsa_circ_0017620 groups in A549 cells and H460 cells (Figure 7A,B).