RAB22A and neoplasm: Their research revealed that UCA1 upregulates several tumour‐promoting genes such as CAMP responsive element‐binding protein 1 (CREB1), B‐cell lymphoma 2 (BCL2) and Ras‐related protein Rab‐22A (RAB22A) by sponging miR‐204‐5p, which is a tumour suppressor (Figure 3).