ATOH1 and neoplasm: However, GFP expression was ∼10% lower in DOX-induced ATOH1 KD tumors (Figure S6B, p = 0.008) and expression of GFP and ATOH1 was heterogeneous in DOX-induced ATOH1 KD tumors, with most tumor presenting with some GFP−, ATOH1+ regions (Figure S6C).