Expression of CD133 was also found to positively correlate with the tumour size (P = 0.0001), invasive depth (Figure 3; P = 0.0001) and metastasis in the regional lymph nodes (P = 0.0001), but not with the age of the patients (P = 0.434) (Table 1). The gene discussed is PROM1; the disease is neoplasm.