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Phase II Study of Vandetanib in Individuals With Kidney Cancer

2015-04-06 08:36:41 | BioPortfolio

Summary

This study will examine the effectiveness of an investigational drug called ZD6474 (also known as vandetanib or ZACTIMA). Vandetanib is an experimental drug that is designed to prevent the growth and development of new blood vessels on tumors and to prevent the direct growth of cancer cells. It has been tested in a number of clinical trials on adults with cancer, but the United States (U.S.) Food and Drug Administration has not specifically approved it as a cancer treatment. The purpose of this investigational study is to better understand how vandetanib affects humans who have kidney cancer related to von Hippel-Lindau (VHL) disease, and to develop tests that may improve researchers understanding of kidney cancer and its effects.

Volunteers must be at least 18 years old and must have been diagnosed with kidney cancer related to VHL. Candidates must have a life expectancy greater than three months and must have at least one measurable renal tumor for study purposes. Candidates may not be receiving any other investigational agents or have been treated with an investigational drug within the past four weeks. Candidates who have had surgery, chemotherapy, or radiotherapy within the past four weeks will be excluded from the study. Candidates will be screened with a physical examination and medical history.

During the study, participants will receive an oral dose of vandetanib once a day for 28 days (a treatment period known as a cycle). Participants will need to return to the National Institutes of Health every two weeks on the same day of the week as the first dose of vandetanib for a series of tests and procedures, including blood and urine tests and an electrocardiogram. Every 12 weeks, computerized tomography (CT) or magnetic resonance imaging (MRI) scans will be done to assess the size of participants tumors. Participants whose tumors do not grow and who do not have unacceptable side effects may continue to receive vandetanib to maintain the current condition, until researchers conclude the study....

Description

Background:

Von Hippel Lindau disease is a hereditary cancer syndrome in which affected individuals are at risk for developing tumors in a number of organs, including the kidneys, brain, spine, adrenal glands, eyes and pancreas.

The molecular hallmark of VHL is inactivation of the VHL gene which leads to accumulation of proteins targeted for degradation through the ubiquitin pathway, which includes a group of transcriptionally active proteins called the hypoxia inducible factors (HIF), whose alpha subunits undergo degradation in a VHL-dependent fashion. Accumulation of HIFs results in overexpression of several genes including vascular endothelial growth factor (VEGF), glucose transporter 1 (GLUT-1), transforming growth factor (TGF)-alpha, platelet- derived growth factor (PDGF), and erythropoietin, which are believed to play a role in tumorigenesis, tumor progression and metastasis.

ZD6474 is an orally administered receptor tyrosine kinase inhibitor with activity against the Kinase insert domain-containing receptor/vascular endothelial growth factor receptor 2 (KDR/VEGFR2) and the epidermal growth factor receptor (EGFR). Kinase insert domain receptor (KDR)/vascular growth factor receptor 2 (VEGFR2) is an endothelial cell receptor for vascular endothelial growth factor (VEGF) and plays a crucial role in mediating tumor angiogenesis, while epidermal growth factor receptor (EGFR) (a receptor for TGF-alpha and epidermal growth factor (EGF) is believed to mediate tumor growth and proliferation.

Objective:

Primary Objective

To assess the overall response rate in VHL patients with renal tumors treated with single agent ZD6474

Secondary Objectives:

To study the safety and tolerability of ZD6474

To evaluate time to progression and progression-free survival in VHL patients receiving ZD6474

To study the effect of ZD6474 treatment on non-renal tumors associated with von Hippel Lindau disease ( pancreatic tumors, pheochromocytoma, central nervous system (CNS) hemangioblastomas)

To investigate the effect of ZD6474 on circulating endothelial cells and endothelial progenitor cells and to explore the utility of these markers as surrogates of angiogenesis inhibition

To investigate the effect of ZD6474 on biomarkers of angiogenesis such as plasma VEGF and soluble VEGFR2

Eligibility:

Adults with clinical diagnosis of von Hippel Lindau disease

Presence of one or more measurable renal tumors

Age greater than or equal to 18 years

Adequate organ function, performance status (Eastern Cooperative Oncology Group (ECOG) 0-2) and life expectancy (greater than 3 months)

Design:

Single agent ZD6474 administered daily at a starting dose of 300mg per day

Patients will be evaluated for response every 12 weeks using Response Evaluation Criteria in Solid Tumors (RECIST) criteria

The study is based on an open label two-stage optimal phase II design

Accrual of a maximum of 37 patients.

Study Design

Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Renal Cancer

Intervention

ZACTIMA (Vandetanib) (ZD6474)

Location

National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda
Maryland
United States
20892

Status

Active, not recruiting

Source

National Institutes of Health Clinical Center (CC)

Results (where available)

View Results

Links

Published on BioPortfolio: 2015-04-06T08:36:41-0400

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Medical and Biotech [MESH] Definitions

The amount of PLASMA that perfuses the KIDNEYS per unit time, approximately 10% greater than effective renal plasma flow (RENAL PLASMA FLOW, EFFECTIVE). It should be differentiated from the RENAL BLOOD FLOW; (RBF), which refers to the total volume of BLOOD flowing through the renal vasculature, while the renal plasma flow refers to the rate of plasma flow (RPF).

Persistent high BLOOD PRESSURE due to KIDNEY DISEASES, such as those involving the renal parenchyma, the renal vasculature, or tumors that secrete RENIN.

Conditions in which the KIDNEYS perform below the normal level in the ability to remove wastes, concentrate URINE, and maintain ELECTROLYTE BALANCE; BLOOD PRESSURE; and CALCIUM metabolism. Renal insufficiency can be classified by the degree of kidney damage (as measured by the level of PROTEINURIA) and reduction in GLOMERULAR FILTRATION RATE. The most severe form is KIDNEY FAILURE. Renal function may deteriorate slowly (RENAL INSUFFICIENCY, CHRONIC) or precipitously (RENAL INSUFFICIENCY, ACUTE).

Distention of KIDNEY with the presence of PUS and suppurative destruction of the renal parenchyma. It is often associated with renal obstruction and can lead to total or nearly total loss of renal function.

A cancer registry mandated under the National Cancer Act of 1971 to operate and maintain a population-based cancer reporting system, reporting periodically estimates of cancer incidence and mortality in the United States. The Surveillance, Epidemiology, and End Results (SEER) Program is a continuing project of the National Cancer Institute of the National Institutes of Health. Among its goals, in addition to assembling and reporting cancer statistics, are the monitoring of annual cancer incident trends and the promoting of studies designed to identify factors amenable to cancer control interventions. (From National Cancer Institute, NIH Publication No. 91-3074, October 1990)

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