SMARCA4 and small cell lung carcinoma: Using the top 50 genes from PC1, PC3, and PC4 for unsupervised hierarchical clustering using the top 50 genes from PC1, PC3, and PC4 confirmed the clustering of SMARCA4-mutant SCLC-Y cell lines with SMARCA4-UT and SCCOHT samples (Supplementary Fig. S5C).