CSF2 and cancer: Since a tendency for increased concentrations of hematopoietic growth factors such as GM‐CSF and G‐CSF were identified in the plasma of responder patients (Table EV2), and a correlation between FKN levels and myeloid diversity was also found (Fig 1H), we included cancer cell lines overexpressing key hematopoietic growth factors as controls (Fig EV3G).