Between aGVHD and GVHD-free patients (Figure 3E), the cDC2 (CD1c+) subset displayed overall greater levels of B7-H4 expression in the GVHD-free group compared to the aGVHD group; a reciprocal relation was observed in cDC1 (CD141+) cells. The gene discussed is VTCN1; the disease is graft versus host disease.