FER1L4 and non-small cell lung carcinoma: FER1L4, a novel LncRNA, was first identified that its down‐regulated expression in human gastric cancer.99 Gao et al also found that FER1L4 was down‐regulated in NSCLC in vivo and in vitro, and overexpression of FER1L4 could inhibit cell metastasis through regulating the PI3K/Akt signal pathway.100 Many studies indicated that the PI3K/Akt signalling was aberrantly activated in human malignancies and was associated with tumour metastasis and drug resistance.101