Furthermore, sericite treatment attenuated the expression of the survival gene PCNA, reduced the typical angiogenesis marker CD31, and reduced the expression of the metastasis marker MMP9 in tumor tissues, indicating the antiproliferative, antiangiogenic, and antimetastatic activity of sericite in a xenograft model along with a reduction in tumor volume. This evidence concerns the gene MMP9 and neoplasm.