Darbepoetin alfa administered every 2 weeks alleviates anemia in cancer patients receiving chemotherapy.
The objectives of this study were to assess the safety and efficacy of darbepoetin alfa (Aranesp) administered every 2 weeks in anemic patients with solid tumors receiving chemotherapy. This was an open-label, randomized, active-controlled, multicenter dose-finding study evaluating a range of every-2-week darbepoetin alfa doses. The active control arm received epoetin alfa (Epogen, Procrit) at 40,000 U weekly with a dose increase to 60,000 U weekly for subjects with an inadequate response. The lowest clinically effective doses of darbepoetin alfa in this study were 3.0 and 5.0 microg/kg every 2 weeks, with no additional benefit observed at higher doses. The percentage of patients who achieved a hematopoietic response in the 3.0- and 5.0-microg/kg groups was 66% (95% confidence interval [CI] = 46%-86%) and 84% (95% CI = 67%-100%), respectively, compared with 63% (95% CI = 46%-81%) in the epoetin alfa group. Darbepoetin alfa administered at a dose of 3.0 microg/kg every 2 weeks is safe and effective for treating anemia in patients with solid tumors on chemotherapy, and is comparable to epoetin alfa. A dose increase to 5.0 microg/kg of darbepoetin alfa administered every 2 weeks may be appropriate in patients with an inadequate initial response.
Glaspy
John A
JA
UCLA School of Medicine, UCLA Oncology Center, Los Angeles, California, USA. jglaspy@mednet.ucla.edu
Tchekmedyian
N Simon
NS
D000740:Anemia / Q000097:blood / Q000139:chemically induced / Q000188:drug therapy*; D001943:Breast Neoplasms / Q000097:blood / Q000188:drug therapy; D000068256:Darbepoetin alfa; D004334:Drug Administration Schedule; D000068817:Epoetin Alfa; D004921:Erythropoietin / Q000008:administration & dosage* / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000097:blood / Q000188:drug therapy; D005833:Genital Neoplasms, Female / Q000097:blood / Q000188:drug therapy; D005834:Genital Neoplasms, Male / Q000097:blood / Q000188:drug therapy; D006801:Humans; D008175:Lung Neoplasms / Q000097:blood / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000097:blood / Q000188:drug therapy*; D011994:Recombinant Proteins; D016896:Treatment Outcome
D011994:Recombinant Proteins; D004921:Erythropoietin; D000068256:Darbepoetin alfa; D000068817:Epoetin Alfa