Resultatet af samlet overlevelse i studierne kunne ikke forklares tilfredsstillende med forskelle i hyppigheden af trombose og relaterede komplikationer mellem de patienter, som fik rekombinant human erytropoietin, og patienterne i kontrolgruppen.
Overall survival outcome in the trials could not be satisfactorily explained by differences in the incidence of thrombosis and related complications between those given recombinant human erythropoietin and those in the control group.