demonstrated that CAFs assisted cancer progression by heterophilic adhesion of N‐cadherin at the CAF membrane and E‐cadherin at the cancer cell membrane.[3b] Correlating with this result, melanoma cells in the heterospheroid tend to follow the migration path of the preceding fibroblasts, suggesting fibroblast‐assisted melanoma migration and invasion (Figure S7, Supporting Information). The gene discussed is CDH2; the disease is cancer.