RGS2 and neoplasm: These data showed that the RGS2 expression was also significantly upregulated in the tumour pool compared with the normal myoepithelial pool (Affymetrix: 3.48-fold increase, P = 2.23 × 10-10; Agilent: 2.85-fold increase, P = 4.71 × 10-5; CodeLink: 12.9-fold increase, P = 1.14 × 10-4).