DCLK1 and neoplasm: Further verification and bio‐informatics analysis were conducted, data showed that DCLK1 was significantly up‐regulated in 5‐fluorouracil resistant cells and in subcutaneous tumour with 5‐fluorouracil resistance (Figure 1F‐a,b), and survival analysis from the GEPIA2 database showed that patients with high DCLK1 had poorer overall survival than patients with low DCLK1 (Figure 1F‐c).