title: Pegfilgrastim administered in a single fixed dose is effective in inducing neutrophil count recovery after paclitaxel and topotecan chemotherapy in patients with relapsed aggressive non-Hodgkin's lymphoma.
abstract: Pegfilgrastim is a pegylated form of a granulocyte colony-stimulating factor with a long half-life allowing for a single administration per chemotherapy cycle. The efficacy of a single dose of pegfilgrastim in supporting severely myelosuppressive regimens in previously treated cancer patients is unknown. Patients included in the present study had recurrent or refractory aggressive non-Hodgkin's lymphoma (NHL), had received two to three prior treatment regimens, and had good performance status and marrow reserve. Patients received intravenous paclitaxel 200 mg/m(2) on day 1 and topotecan 1 mg/m(2) daily for 5 days, repeated every 21 days for at least two cycles. On day 6, patients were given a single fixed dose of pegfilgrastim (6 mg) subcutaneously. Twenty patients were evaluable for analysis. After the first course of therapy, grade 4 neutropenia developed in all 20 patients. The median time to the neutrophil nadir was 9 days. The mean +/- SD duration of grade 4 neutropenia was 3.8 +/- 1.7 days. Nineteen (95%) patients received cycle 2 on time, on day 22. Five patients developed neutropenic fever (25%), which was associated with infection in one patient. In these previously treated patients with NHL, a single dose of pegfilgrastim was effective in promoting neutrophil count recovery after paclitaxel and topotecan, and allowed patients to receive the next planned dose on time.
authors.affiliation: Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
authors.forename: Barbara
authors.initials: B
authors.lastname: Pro
authors.forename: Luis
authors.initials: L
authors.lastname: Fayad
authors.forename: Peter
authors.initials: P
authors.lastname: McLaughlin
authors.forename: Jorge
authors.initials: J
authors.lastname: Romaguera
authors.forename: Fredrick B
authors.initials: FB
authors.lastname: Hagemeister
authors.forename: Maria A
authors.initials: MA
authors.lastname: Rodriguez
authors.forename: Andre
authors.initials: A
authors.lastname: Goy
authors.forename: Evelyn
authors.initials: E
authors.lastname: Loyer
authors.forename: Anas
authors.initials: A
authors.lastname: Younes
mesh_terms: D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D004334:Drug Administration Schedule; D005260:Female; D000069585:Filgrastim; D016179:Granulocyte Colony-Stimulating Factor / Q000008:administration & dosage*; D006801:Humans; D007275:Injections, Intravenous; D007279:Injections, Subcutaneous; D007958:Leukocyte Count; D008228:Lymphoma, Non-Hodgkin / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D009504:Neutrophils / Q000187:drug effects*; D017239:Paclitaxel / Q000008:administration & dosage*; D011092:Polyethylene Glycols; D011994:Recombinant Proteins; D012008:Recurrence; D019772:Topotecan / Q000008:administration & dosage*; D016896:Treatment Outcome
chemical_list: D011994:Recombinant Proteins; D016179:Granulocyte Colony-Stimulating Factor; C455861:pegfilgrastim; D011092:Polyethylene Glycols; D019772:Topotecan; D017239:Paclitaxel; D000069585:Filgrastim