SRRM4 and small cell lung carcinoma: Analysis of RTN1, NRSN1, MYT1 and SRRM4 levels in scRNAseq pseudotime trajectory of the GEMM SCLC model demonstrating subtype plasticity (Fig. 2H, I) [6] also confirmed loss of expression of these four genes in the transition from high- to low-NE state in SCLC (Fig. S7C).