The results indicate that the expression of MMP7 in the tumor tissues of lymphoid neoplasm diffuse large B-cell lymphoma (DLBC) and ovarian serous cystadenocarcinoma (OV) was considerably higher than the normal controls (Figure 1B, P < 0.05), while lower MMP7 expression was detected in SKCM tumor tissue when compared with normal tissue (Figure 1B, P < 0.05). This evidence concerns the gene MMP7 and diffuse large B-cell lymphoma.