Administration options for pegfilgrastim prophylaxis: patient and physician preferences from a cross-sectional survey

Although clinical guidelines recommend administration of pegfilgrastim 1-4 days after a myelosuppressive chemotherapy cycle to decrease the incidence of febrile neutropenia (FN), some physicians administer pegfilgrastim on the same day as chemotherapy administration. A novel on-body injector (OBI) that automatically delivers pegfilgrastim the day after chemotherapy is also available. Our objective was to estimate patient and physician preferences among the pegfilgrastim administration options. We conducted a cross-sectional survey of patients receiving pegfilgrastim and physicians prescribing pegfilgrastim. Respondents' preferences for pegfilgrastim administration options were elicited using direct elicitation; the relative importance of features associated with the options was estimated in a point-allocation exercise. Physicians considered two hypothetical patient profiles when completing the exercises. The samples included 200 patients and 200 physicians. Patients generally preferred the administration option with which they had experience. Among patients, 48.5% with previous in-clinic injections 24 hours after chemotherapy preferred this option; 56.8% with previous OBI administration preferred this option. For a clinically compromised patient, 37.5% of physicians preferred an in-clinic injection option; 49.5% preferred the OBI. For a less compromised patient, 55.5% preferred an in-clinic injection option; 28.0% preferred the OBI. Avoiding the need to return to the clinic was chosen most often as the most important treatment feature for patients and physicians. Patients and physicians identified that returning clinic visits for pegfilgrastim administration may be burdensome. A potential solution to mitigate this burden is the OBI, which allows adherence to the labeled use of pegfilgrastim without return visits to the clinic.