To address this, we performed an in vitro capillary tube formation assay in CCLP-1 and HUCCT-1 cells and found that HUVECs incubated with tumor cell conditioned medium (TCM) from HOXB7-overexpressing cells displayed a greater ability to promote capillary-like structure formation than the control group (Fig. 3g). The gene discussed is HOXB7; the disease is neoplasm.