GSTπ concentration increased with the tumor stage T. Especially important is the difference between invasive and noninvasive stages (e.g., Ta and T2, p = 0.003) and tumor grade: G1 and G2 (p ≤ 0.001) and G1 and G3 (p = 0.0207) (Figure 1(b)). The gene discussed is GSTP1; the disease is neoplasm.