EBMT risk score definition                         

Risk factor                                                                      Score point
Age of the patient
              <20 years                                                                0
               20–40 years                                                           1
              >40 years                                                                2
Disease stage
               Early    (= first chronic phase)                                 0
               Intermediate  (= accelerated phase)                      1
               Late    (= other)                                                      2
Time interval from diagnosis to transplant
               <12 months                                                             0
               >12 months                                                             1
Donor type
               HLA-identical sibling donor                                       0
               Unrelated donor                                                       1
Donor recipient gender combination
               All other                                                                    0
               Donor female – male recipient                                  1