The dysregulated expression of BMP1, BMP7, CALD1, KRT14, CAV2, IL1RN, and adherent junctions proteins (CDH1, CDH2, DSC2), promotes the primordial detachment between the distal cancer cells, depriving the central cancer cells of the blood supply leading to comedonecrosis in AC and LCNEC and “geographic” in SCLC. Here, BMP7 is linked to small cell lung carcinoma.