MDM2 and colorectal carcinoma: Five lncRNA/miR-545-5p/PCG axes promote cancer progression, including CRNDE/miR-545-5p/CCND2 in nasopharyngeal carcinoma (NPC),44 NR2F2-AS1/miR-545-5p/MET in LC,45 LncRP5/miR-545-5p/PTP4A1 in OC,46 CRNDE/miR-545-5p/TIM-3 in OSCC,47 and LINC00342/miR-545-5p/MDM2 in CRC.48