MRNAs PRKCD, PRKAR1A, BTG2 competed with lncRNA RP11-408O19.5 for the same miRNAs (miR-15a-5p, miR-15b-5p, miR-16-5p, miR-195-5p) in primary cancer; lncRNA RP11-408O19.5 competed with GGA3 for miR-15b-5p, miR-16-5p, and miR-195-5p in metastatic cancer (Figure 6F). This evidence concerns the gene GGA3 and metastatic malignant neoplasm.