ALDH1A1 and small cell lung carcinoma: In particular, a recent review highlighted the expression of ENOB with other three proteins, namely BASP-1 (brain acid soluble protein 1), AL1A1 (aldehyde dehydrogenase 1A1), and SEGN (secretagogin), in both small-cell lung cancer (SCLC) and large cell neuroendocrine carcinoma (LCNE) [51].