Similar to the NSCLC results, CD40 expression in ovarian cancer showed considerable intratumoral heterogeneity (R2 = 0.37), high concordance between serial sections (R2 = 0.79), and some correlation between expression in the tumor and stroma compartments (R2 = 0.61; Supplementary Fig. 2A-C). The gene discussed is CD40; the disease is non-small cell lung carcinoma.