SLC2A1 and urinary bladder cancer: GPRC5A expression was also significantly elevated in pTis (8.3-fold, p = 0.0084), pT1 (19.5-fold, p = 2.1 x 10-8), G2 (2.0-fold, p = 0.048) and G3 bladder cancer (11.5-fold, p = 8.1 x 10-7) therefore may be useful to supplement SLC2A1 especially for the detection of pTis bladder cancer (Figure 3B, 3E).