NEUROD1 and small cell lung carcinoma: To extend these results to other SCLC subtypes, we studied (i) variant SCLC-N COR-L279 cells that express NEUROD1, and exhibit characteristics of NE differentiation, and (ii) SCLC-P H526 cells that express POU2F3, but not the NE phenotype (Fig. 2A; ref. 1).