Current studies have indicated that tumor metastasis is facilitated by blood platelets (PLTs) (Karpatkin and Pearlstein, 1981; Gasic, 1984; Tanaka et al., 1986; Chen et al., 1992; Honn and Tang, 1992a,b; Nieswandt et al., 1999), and platelets and tumor cells are bound by P-selectin and the CD44 receptor (Borsig et al., 2001; Hu et al., 2015a) with capture based on structure (Sabrkhany et al., 2018). The gene discussed is SELP; the disease is neoplasm.