TY - JOUR
T1 - A randomized phase II trial of the antiangiogenic agent SU5416 in hormone-refractory prostate cancer
AU - Stadler, Walter M.
AU - Cao, Dingcai
AU - Vogelzang, Nicholas J.
AU - Ryan, Christopher W.
AU - Hoving, Kristin
AU - Wright, Russell
AU - Karrison, Theodore
AU - Vokes, Everett E.
PY - 2004/5/15
Y1 - 2004/5/15
N2 - Purpose: To assess the activity of the antiangiogenic agent and VEGFR2 inhibitor SU5416 in hormone-refractory prostate cancer. Patients and Methods: Thirty-six chemotherapy naïve patients were randomized to treatment with SU5416 (145 mg/m2) and dexamethasone premedication or dexamethasone alone. Patients in the control arm could cross over to experimental therapy after progression. Prostate-specific antigen (PSA) was measured every 2 weeks, and radiological evaluation was performed every 8 weeks. In vitro assessment of SU5416 on PSA secretion was assessed in the LNCaP cell line. Baseline serum basic fibroblast growth factor and plasma vascular endothelial growth factor (VEGF) were explored as prognostic factors. Results: VEGF receptor-2 expression is detectable in prostate cancer cell lines, and SU5416 inhibited in vitro PSA secretion. No effect of SU5416 on PSA secretion or time to progression is detectable in patients. VEGF and basic fibroblast growth factor were not prognostic. Headache and fatigue were the most common SU5416 toxicities, but hyperglycemia, hyponatremia, lymphopenia, infection, and adrenal suppression, all attributable to steroids and the required central line, were common. Conclusion: No disease modifying effects of SU5416 were detectable in this small study. Modest toxicity, an inconvenient administration schedule, and availability of other VEGFR-targeted agents support the decision to halt further evaluation of SU5416 in prostate cancer.
AB - Purpose: To assess the activity of the antiangiogenic agent and VEGFR2 inhibitor SU5416 in hormone-refractory prostate cancer. Patients and Methods: Thirty-six chemotherapy naïve patients were randomized to treatment with SU5416 (145 mg/m2) and dexamethasone premedication or dexamethasone alone. Patients in the control arm could cross over to experimental therapy after progression. Prostate-specific antigen (PSA) was measured every 2 weeks, and radiological evaluation was performed every 8 weeks. In vitro assessment of SU5416 on PSA secretion was assessed in the LNCaP cell line. Baseline serum basic fibroblast growth factor and plasma vascular endothelial growth factor (VEGF) were explored as prognostic factors. Results: VEGF receptor-2 expression is detectable in prostate cancer cell lines, and SU5416 inhibited in vitro PSA secretion. No effect of SU5416 on PSA secretion or time to progression is detectable in patients. VEGF and basic fibroblast growth factor were not prognostic. Headache and fatigue were the most common SU5416 toxicities, but hyperglycemia, hyponatremia, lymphopenia, infection, and adrenal suppression, all attributable to steroids and the required central line, were common. Conclusion: No disease modifying effects of SU5416 were detectable in this small study. Modest toxicity, an inconvenient administration schedule, and availability of other VEGFR-targeted agents support the decision to halt further evaluation of SU5416 in prostate cancer.
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U2 - 10.1158/1078-0432.CCR-03-0404
DO - 10.1158/1078-0432.CCR-03-0404
M3 - Article
C2 - 15161690
AN - SCOPUS:2542421792
SN - 1078-0432
VL - 10
SP - 3365
EP - 3370
JO - Clinical Cancer Research
JF - Clinical Cancer Research
IS - 10
ER -