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J Clin Oncol. 2006 Aug 1;24(22):3555-61.

Phase II study of recombinant human endostatin in patients with advanced neuroendocrine tumors.

Author information

  • 1Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA. matthew_kulke@dfci.harvard.edu

Abstract

PURPOSE:

Endostatin is a 20-kd proteolytic fragment of collagen XVIII that, in preclinical studies, has been shown to have antiangiogenic and antitumor activity. Both preclinical and human phase I studies of recombinant human endostatin (rhEndostatin) suggested activity in neuroendocrine tumors, which are known to be hypervascular. We therefore performed a multicenter phase II study of rhEndostatin in patients with carcinoid or pancreatic neuroendocrine tumors.

PATIENTS AND METHODS:

Forty-two patients with advanced pancreatic endocrine tumors or carcinoid tumors were treated with rhEndostatin administered as a bid subcutaneous injection at a starting dose of 60 mg/m2/d. Steady-state trough levels were obtained after 6 weeks of therapy; patients who did not achieve a target therapeutic level of 300 ng/mL underwent dose escalation to 90 mg/m2/d. Patients were observed for evidence of toxicity, response, and survival.

RESULTS:

rhEndostatin was associated with minimal toxicity. However, among 40 patients assessable for radiologic response, none experienced partial response to therapy, as defined by WHO criteria. The median steady-state trough level achieved after dose escalation was 331 ng/mL, within the postulated therapeutic range.

CONCLUSION:

Treatment with rhEndostatin did not result in significant tumor regression in patients with advanced neuroendocrine tumors.

Comment in

PMID:
16877721
[PubMed - indexed for MEDLINE]
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