The feasibility and efficacy of a combination of thalidomide, cyclophospham
ide, etoposide, and dexamethasone were studied in 56 patients with poor-pro
gnosis multiple myeloma. Of 50 patients evaluable for response, 4% achieved
complete response (CR), 64% partial response (PR), 18% minimal response (M
R), 6% stable disease (SD), and 8% progressive disease (PD), resulting in a
n objective response rate ( : MR) of 86.0% (76.7% over-all objective respon
se rate in intent-to-treat analysis; n = 56). Subsequent to successful remi
ssion induction, 18 patients received autologous or allogeneic stem cell tr
ansplantation. The median progression-free survival in all patients was 16
months. The median overall survival time could not be calculated, since the
last observed death occurred after 16 months of follow-up (median follow-u
p of 14 months) with a corresponding estimated survival probability of 55%.
Severe adverse effects (World Health Organization III/IV) included Infecti
ous complications (35.7%) and cardiovascular events (7.1%). The data sugges
t that Thai improves antitumor activity of salvage chemotherapy regimens in
poor-prognosis multiple myeloma. (C) 2001 by The American Society of Hemat
ology.