Phase II trial of bicalutamide in patients with advanced prostate cancer in whom conventional hormonal therapy failed: A Southwest Oncology Group Study (SWOG 9235)
O. Kucuk et al., Phase II trial of bicalutamide in patients with advanced prostate cancer in whom conventional hormonal therapy failed: A Southwest Oncology Group Study (SWOG 9235), UROLOGY, 58(1), 2001, pp. 53-58
Objectives. To determine the efficacy and tolerability of bicalutamide in p
atients with advanced prostate cancer with progression after conventional h
ormonal therapy.
Methods. Fifty-two patients received bicalutamide, 150 mg once daily, as se
cond-line therapy after progressing following treatment with orchiectomy or
luteinizing hormone-releasing hormone analogue or diethylstilbestrol, alon
e or in combination. Patients had measurable (n = 8) or assessable (n = 44)
disease, a Southwest Oncology Group performance status of 0 to 2, and no p
rior antiandrogen therapy or chemotherapy. The objective response to treatm
ent was assessed every 12 weeks; symptoms and pain were assessed monthly wi
th questionnaires for 6 months.
Results. There was evidence of palliation with three measures of pain and,
to a lesser extent, with a measure of overall symptom status after 3 months
of taking bicalutamide. No complete or partial responses occurred. However
, 9 (20%) of 44 subjects with adequate prostate-specific antigen data had a
50% or higher decrease in their prostate-specific antigen levels, which di
d not correlate with symptom improvement. The median survival time was 15 m
onths. The most common side effects were hot flashes (23%) and nausea (21%)
.
Conclusions. These data suggest that bicalutamide decreases pain and improv
es symptom status in patients with prostate cancer in whom first-line hormo
nal therapy failed. UROLOGY 58: 53-58, 2001. ( C) 2001, Elsevier Science In
c.