Study Of Sunitinib In Patients With Recurrent Paraganglioma/Pheochromocytoma
This is an open-label phase II study of an investigational drug, sunitinib malate in patients with advanced malignant paraganglioma or phaeochromocytoma cancer. Paragangliomas (PGs) are tumours that arise from the para-sympathetic system in the head and neck and sympathetic system in the thorax and abdomen. Paragangliomas that secrete hormones (catecholamines) from the adrenal glands are called pheochromocytomas (PCs). In this study, patients whose disease has advanced or spread despite prior standard therapy, will receive sunitinib for 4-weeks followed by a 2-week rest period, for up to 12 months, in the absence of disease progression. Sunitinib is an investigational drug, which has been shown to shrink tumours in several tumour models. The study will evaluate the efficacy as well as the toxicity profile of sunitinib when used as an alternative treatment for patients with PG/PC tumours.
This study will be a single arm, open-label, phase II trial of sunitinib in patients with metastatic or locally advanced malignant paraganglioma or phaeochromocytoma. Oral sunitinib (50 mg) will be administered to all patients daily for the first four weeks of a six week study cycle, followed by a 2-week rest. Patients will be assessed for response to study treatment using MRI/CT scans as well as bio-chemical tests, and will receive the study treatment for up to 12 months or until disease progression.
Primary study outcomes include:
To assess the efficacy (response rate) of sunitinib given orally daily for 4 out of every 6 weeks in patients with advanced or metastatic paraganglioma/ pheochromocytoma.
To assess the toxicity of sunitinib in patients with advanced or metastatic paraganglioma/ pheochromocytoma.
To document effects of sunitinib on markers of biochemical activity of advanced or metastatic paraganglioma/ pheochromocytoma.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
University Health Network, Princess Margaret Hospital
University Health Network, Toronto
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00843037
- Information obtained from ClinicalTrials.gov on July 15, 2010
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Medical and Biotech [MESH] Definitions
A neural crest tumor usually derived from the chromoreceptor tissue of a paraganglion, such as the carotid body, or medulla of the adrenal gland (usually called a chromaffinoma or pheochromocytoma). It is more common in women than in men. (Stedman, 25th ed; from Segen, Dictionary of Modern Medicine, 1992)
A rare PARAGANGLIOMA involving the GLOMUS TYMPANICUM, a collection of chemoreceptor tissue adjacent to the TYMPANIC CAVITY. It can cause TINNITUS and conductive hearing loss (HEARING LOSS, CONDUCTIVE).
A relatively rare, usually benign neoplasm originating in the chemoreceptor tissue of the CAROTID BODY; GLOMUS JUGULARE; GLOMUS TYMPANICUM; AORTIC BODIES; and the female genital tract. It consists histologically of rounded or ovoid hyperchromatic cells that tend to be grouped in an alveolus-like pattern within a scant to moderate amount of fibrous stroma and a few large thin-walled vascular channels. (From Stedman, 27th ed)
A paraganglioma involving the glomus jugulare, a microscopic collection of chemoreceptor tissue in the adventitia of the bulb of the jugular vein. It may cause paralysis of the vocal cords, attacks of dizziness, blackouts, and nystagmus. It is not resectable but radiation therapy is effective. It regresses slowly, but permanent control is regularly achieved. (From Dorland, 27th ed; Stedman, 25th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, pp1603-4)