Distribution of acute GVHD stages in the skin, liver, and gastrointestinal tract according to donor statin treatment. GVHD stages in target organs were evaluated in the 54 recipients with cyclosporine-based postgrafting immunosuppression who had grafts from statin-treated donors (R−/D+) and in the 340 controls where neither the donor nor recipient was treated with a statin at the time of transplantation (R−/D−). P values are derived from Wilcoxon rank-sum test.