UCHL1 and neoplasm: In addition, UCHL1‐specific inhibitor, LDN‐57444, significantly reduced NE markers expression, as well as delayed tumor growth of multiple NE carcinoma xenografts, including NEPC (NCI‐H660), SCLC (NCI‐H82), and neuroblastoma (IMR‐32) cell line, and NEPC and SCLC PDX models in vivo.161