We observed up to 40% of FOXA2 binding sites were co-occupied by ASCL1 (Figure 3A) and identified 5,930 peaks annotated to 3,848 unique genes cobound by ASCL1:FOXA2 in NEPC (Figure 3A) and 4,329 peaks annotated to 3,166 unique genes in SCLC (Supplemental Figure 3A). This evidence concerns the gene FOXA2 and small cell lung carcinoma.