The studies either recruited patients who were being treated with chemotherapy (two studies) or used patient populations in which erythropoiesis stimulating agents are not indicated: anaemia in patients with cancer not receiving chemotherapy, and head and neck cancer patients receiving radiotherapy.
Forsøgene rekrutterede enten patienter, som var i behandling med kemoterapi (to forsøg) eller benyttede patientpopulationer, hvor erythropoiese- stimulerende stoffer ikke er indiceret: anæmi hos patienter med cancer, som ikke fik kemoterapi, og hoved - og halscancer hos patienter, som fik strålebehandling.