Despite several studies seeking to improve first-line therapy for acute GVHD, standard care remains moderate-dose corticosteroids. Higher initial doses of corticosteroids, a more prolonged steroid tapering course, and addition of murine or equine anti-T-cell antibodies to standard GVHD therapy all failed to improve response rates. Acute GVHD therefore remains an unfavorable complication of transplantation that is difficult to manage. Various immunosuppressants including, Anti-thimocyte globulin (ATG), Denileukin Diftitox, Mycophenolate mofetil, Pentostatin, Infliximab, Rapamycin, Inolimomab and Daclizumab have been tried with variable success (table-1 in full protocol); there remains no consensus on the second-line treatment of aGVHD.