TTC4 and lung adenocarcinoma: We found that CNS1 correlates with a DNase I hypersensitive site in several human primary cells from adult kidney tubule known to express HNF1B at a high level but not in Caco-2 or A549 cell lines derived from colon carcinomas and lung adenocarcinomas respectively, which also express HNF1B although at a lower level (https://www.proteinatlas.org) (Fig. 2a, Fig. S1a).