ACP5 and neoplasm: Moreover, we analyzed the ACP5 expression in metastasis and different tumor stage in TCGA database, the results showed that ACP5 expression was higher in M1 (with metastasis) tumor than in M0 (no metastasis) tumor (Figure 6D), and ACP5 expression was higher in stage IV tumor than in stage I and stage III tumors (Figure 6E).