GAPDH and breast cancer: In Western blot analysis, 84 (69%) patients showed significantly lower RNPC1a expression in the breast cancer tissue compared to the adjacent normal tissue, partial data was showed in Figure 1D. The comparison obtained by calculating the ratio between RNPC1a and GAPDH expression (Figure 1E, p < 0.05) also showed RNPC1a expression in tumors was lower than the adjacent tissues (mean: 0.87, 1.37).