MAP4 and mucinous neoplasm: The moderate correlation between calpain-1 and MAP4 was also observed in HGSCs (rs = 0.472, P < 0.001, n = 255) and CCCs (rs = 0.516, P < 0.001, n = 42), whilst strong correlation was observed in endometrioid (rs = 0.687, P < 0.001, n = 50) and mucinous tumours (rs = 0.708, P < 0.001, n = 36), with no significant correlation detected between calpain-1 and MAP4 in LGSC.