The distribution of circTLCD4-RWDD3 within A549 and H1299 cells overlapped extensively with that of hnRNPA2B1 (Fig. 3i), indicating that circTLCD4-RWDD3 interacts with hnRNPA2B1 for function in NSCLC. Here, HNRNPA2B1 is linked to non-small cell lung carcinoma.