PT - JOURNAL ARTICLE AU - Caroline C. Billingsley AU - Samuel N. Jacobson AU - Sarah M. Crafton AU - Aleia K. Crim AU - Quan Li AU - Erinn M. Hade AU - David E. Cohn AU - Jeffrey M. Fowler AU - Larry J. Copeland AU - Ritu Salani AU - Floor J. Backes AU - David M. O’Malley TI - Evaluation of the Hematologic Safety of Same Day Versus Standard Administration (24- to 72-Hour Delay) of Pegfilgrastim in Gynecology Oncology Patients Undergoing Cytotoxic Chemotherapy AID - 10.1097/IGC.0000000000000487 DP - 2015 Sep 01 TA - International Journal of Gynecologic Cancer PG - 1331--1336 VI - 25 IP - 7 4099 - http://ijgc.bmj.com/content/25/7/1331.short 4100 - http://ijgc.bmj.com/content/25/7/1331.full SO - Int J Gynecol Cancer2015 Sep 01; 25 AB - Objective We assessed the safety and efficacy of administration of pegfilgrastim on the same day compared with standard administration 24 to 72 hours after chemotherapy in patients with gynecologic malignancies.Methods A retrospective review was conducted on patients undergoing pegfilgrastim to mitigate the myelosuppressive consequences of chemotherapy. The primary outcome was incidence of grade 3 to 4 neutropenia following pegfilgrastim for same-day administration (D1) versus standard administration (D2+). Secondary outcomes included dose delay, regimen change, hospitalization due to neutropenia, and incidence of febrile neutropenia.Results Four hundred twenty-one patients with 2071 administrations of pegfilgrastim were included. Five hundred six administrations of pegfilgrastim were given on D1 compared with 1565 administrations on D2+. The most common malignancy was ovarian cancer (79.1%), followed by endometrial (14.5%). Comparing the D1 and D2+ cohorts, noninferiority was not established for the incidence of grade 3 to 4 neutropenia (2.6% vs 1.8%, adjusted relative risk [aRR], 1.6; 90% confidence interval [CI], 0.87–3.2) or dose modification (6.5% vs 4.9%; aRR, 1.3; 90% CI, 0.9–1.8). However, the rate of treatment delays (7.3% vs 9.4%; aRR, 0.8; 90% CI, 0.6–1.1) in the D1 and D2+ groups suggested that delays in the D1 group were not more common than in the D2+ group.Conclusions The incidence of hematologic toxicities and dose modification in patients receiving same-day pegfilgrastim were not as low as in those undergoing standard administration. However, treatment delays were found to be no more frequent in those receiving same-day pegfilgrastim versus standard administration. Same-day administration of pegfilgrastim is a reasonable option.