In addition, cmvIL-10 upregulated the expression of matrix metalloproteinases (MMPs) such as MMP-3, MMP-9, and MMP-10, while downregulating metastasis suppressor 1 (MTSS1) in BC cells, which may facilitate tumor cell dissemination and increase metastatic potential [130,131]. Here, MTSS1 is linked to neoplasm.