Yazarlar : Zwick C, Hartmann F, Zeynalova S, Pöschel V, Nickenig C, Reiser M, Lengfelder E, Peter N, Schlimok G, Schubert J, Schmitz N, Loeffler M, Pfreundschuh M; for the German High-Grade Non-Hodgkin Lymphoma Study Group.

Yayın : Ann Oncol.

Yayın Yılı : 2011

Pubmed Linki : http://www.ncbi.nlm.nih.gov/pubmed/21292644

Konu : Lösemi

Literatür İçeriği :  

Abstract

BACKGROUND: To study the effects of deferring pegfilgrastim until day 4 on the reduction of chemotherapy-induced leukocytopenia.

PATIENTS AND METHODS: Patients of age 61-80 years with aggressive lymphoma were randomly assigned to receive 6 mg pegfilgrastim on day 2 or 4 of a 2-week chemotherapy regimen (R-CHOP-14).

RESULTS: Two hundred and ninety-two and 313 chemotherapy cycles were evaluable in 103 patients. Post-nadir pegfilgrastim serum levels were higher after day 4 than after day 2 application. This was associated with an attenuated leukocyte nadir after day 4 pegfilgrastim and there were fewer days with leukocytes <2 × 10(3)/mm(3) compared with day 2 pegfilgrastim. Grade 3 and 4 leukocytopenias (70% versus 43.3%; P < 0.001) and grade 4-only leukocytopenias (47% versus 20.5%; P < 0.001) were more frequent after day 2 pegfilgrastim. There were more chemotherapy cycles with grade 3 and 4 infections after day 2 than day 4 pegfilgrastim (9.4% versus 6.0%; P = 0.118). Interventional antibiotics were given more often after day 2 than after day 4 pegfilgrastim (30.7% versus 21.9% of cycles; P = 0.008). There were five deaths during leukocytopenia after day 2 and none after day 4 pegfilgrastim (P = 0.027).

CONCLUSIONS: Administration of pegfilgrastim on day 4 was more effective in reducing severe leukocytopenias and resulted in fewer deaths during leukocytopenia. Pegfilgrastim should be given on day 4 to better exploit its myeloprotective potential.

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