ASCL1 and small cell lung carcinoma: According to the hierarchical clustering of multiple transcription regulators of SCLC, ASCL1 was expressed in 65.6% (19/29) and 73.0% (38/52) of SCLC patients without stratification by clinical stage in two studies using a Caucasian population, respectively, and 53.7% (29/54) in different cell lines from the Cancer Cell Line Encyclopedia.11, 12, 13, 14