GSTM1 and neoplasm: Supporting the hypothesis, blood Hb negatively correlated with mGPS (p < 0.001; Table 2) and serum C-reactive protein (univariate p < 0.001; tumor stage and location and patient gender adjusted p = 0.012; borderline statistical significance considering multiple hypothesis testing; Table S6) and positively correlated with serum albumin (univariate p < 0.001; tumor stage and location and patient gender adjusted p < 0.001).