CXCL12 and graft versus host disease: We observed that CXCL10 and CXCL1 in patients with GVHD was considerably higher than the patients without GVHD (P < 0.0001) while the serum level of CXCL12 was similar in both patients with GVHD and without GVHD (P > 0.05).