The function of ENSG00000166619 (BLCAP, BLCAP apoptosis inducing factor) is as follows. Acts as a tumor suppressor; induces growth arrest at G(1)/S checkpoint and apoptosis via RB1-dependent and p53/TP53- and NF-kappa- B-independent mechanisms (PubMed:16675915, PubMed:17031575, PubMed:21844121, PubMed:26986503). Modulates expression of genes involved in the regulation of proliferation, cell cycle and apoptosis (PubMed:17031575, PubMed:21844121, PubMed:26986503). {ECO:0000269|PubMed:16675915, ECO:0000269|PubMed:17031575, ECO:0000269|PubMed:21844121, ECO:0000269|PubMed:26986503}.