IMPDH2 and lung carcinoma: No correlation was identified between IMPDH1 and IMPDH2 expression in the primary lung carcinoma samples (n = 30) (Pearson r = 0.02, p = 0.10), and a tendency toward a negative correlation for BM (n = 27) was observed, although it was not significant (r = −0.29, p = 0.17) (Figures S5L and S5M).