The HT‐29 colorectal carcinoma cell line, which needs EphrinB2 to survive (Fig. 2E–G), contains abundant EphB4 but not EphB1, EphB2, EphB3, or EphA4 proteins (Fig. 2A,B), as observed previously (Jagle et al., 2014). This evidence concerns the gene EPHB1 and colorectal carcinoma.