The overall expression level of ULBP2 in tumor cells is already high (the expression level of ULBP2 is much higher than that of ULBP1/3, see Fig. 13), and tumor cells with low expression of ULBP2 can produce sufficient soluble ULBP2 for immune evasion; therefore, there is no difference in prognosis between patients with high expression of ULBP2 and those with low expression of ULBP2. This evidence concerns the gene ULBP1 and neoplasm.