View clinical trials related to Pheochromocytoma.
Filter by:Non-invasive measurements of cardiac output (CO), systemic vascular resistance (SVR), corrected aortic flow time (FTc) and stroke volume (SV) are useful parameters during laparoscopic resection of pheochromocytoma (adrenalectomy) to document the intraoperative changes in volume status and to estimate the volume depletion.
This is an ongoing prospective Phase II clinical trial evaluating the efficacy of 131I-MIBG for the treatment of patients with metastatic or unresectable pheochromocytoma and related tumors.
- Rationale: The optimal preoperative medical management for patients with a pheochromocytoma is currently unknown. In particular, there is no agreement with respect to whether phenoxybenzamine or doxazosin is the optimal alfa-adrenoreceptor antagonist to be administered before surgical resection of a pheochromocytoma. We hypothesized that the competitive alfa1-antagonist doxazosin is superior to the non-competitive alfa1- and alfa2-antagonist phenoxybenzamine. - Objective: comparing effects of preoperative treatment with either phenoxybenzamine or doxazosin on intraoperative hemodynamic control in patients undergoing surgical resection of a pheochromocytoma. - Study design: Randomised controlled open-label trial. - Study population: 18 - 55 yr old. Adult patients with a recently diagnosed benign pheochromocytoma. - Intervention: Patients are randomised to receive oral treatment with either phenoxybenzamine or doxazosin preoperatively. - Main study parameters/endpoints: The main study parameter is defined as the percentage of intraoperative time that blood pressure is outside the predefined target range after pretreatment with either phenoxybenzamine or doxazosin. In this multicenter trial, we compare the effects of two commonly used drugs in patients being medically prepared for resection of a benign pheochromocytoma. Participants are not subjected to an experimental treatment of any kind, as we merely aim to describe in detail the perioperative course in general and, in particular, the intraoperative hemodynamic control in patients treated preoperatively with either phenoxybenzamine or doxazosin. A routine diagnostic work-up for pheochromocytoma will be performed in all participants. One extra blood sample (volume: 48,5 mL) is drawn before start of the study medication, and participants need to record their symptoms in a diary. In addition, patients who are pretreated in the outpatient clinic monitor their blood pressure and pulse rate at home with an automated device. Treatment with an alfa-adrenoreceptor antagonist is initiated at least 2 - 3 weeks prior to surgery. Patients who are admitted to the hospital for pretreatment with an alfa-adrenoreceptor antagonist have their blood pressure and pulse rate measured by the nursing staff. The final site visit is planned at 30 days after surgery, in line with current practice.
This is a compassionate use protocol to allow palliative therapy for patients with malignant pheochromocytoma and paragangliomas.
The study is designed to study the safety and effectiveness of 123I-MIBG as a diagnostic imaging agent in evaluating patients with known or suspected neuroendocrine tumors.
The FIRSTMAPPP study is a randomized, double-blind, phase II, international, multicenter study which aims to determine the efficacy of Sunitinib on the progression-free survival at 12 months in subjects with progressive malignant pheochromocytoma and paraganglioma treated with sunitinib at a starting dose of 37.5 mg daily (continuous dosing).
This phase II trial studies how well pazopanib hydrochloride works in treating patients with advanced or progressive malignant pheochromocytoma or paraganglioma. Pazopanib hydrochloride may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth and by blocking blood flow to the tumor.
Metaiodobenzylguanidine (MIBG) is a substance that is taken up by neuroblastoma cells. MIBG is combined with radioactive iodine (131 I) in the laboratory to form a radioactive compound 131 I-MIBG. This radioactive compound delivers radiation specifically to the cancer cells and causes them to die. The purpose of this research protocol provides a mechanism to deliver MIBG therapy when clinically indicated, but also to provide a mechanism to continue to collect efficacy and toxicity data that will be provided. A recent New Approaches to Neuroblastoma Therapy (NANT) phase 2 randomized trial of 131I-MIBG with or without radiation sensitizers for relapsed refractory or persistent neuroblastoma enrolled 114 patients ages 1-30 years showed that Arm A (MIBG alone) had a response rate of 17%, Arm B (MIBG with Vincristine and Irnotecan) had a response rate of 14% and Arm C (MIBG with vorinostat) had a response rate of 32% after the first cycle. After the second cycle, Arm A had a response rate of 33%, Arm B had 30% response rate and Arm C had a 75% response rate. There was an excess of toxicities in Arm B, and no significant SAEs in Arm C. These data were reported at the American Society of Clinical Oncology meeting in June of 2020. Vorinostat has been used extensively in adults and has been granted US FDA approval for the treatment of cutaneous T-cell lymphoma. The approved adult dose is 400 mg orally once daily. Vorinostat is not FDA approved for use in neuroblastoma.
RATIONALE: Temsirolimus may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as vinorelbine ditartrate, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving temsirolimus together with vinorelbine ditartrate may kill more tumor cells. PURPOSE: This phase I trial is studying the side effects and best dose of giving temsirolimus and vinorelbine ditartrate together in treating patients with unresectable or metastatic solid tumors.
- According to Martin F et al, AKT is highly phosphorylated in phenochromocytoma but not in benign adrenocortical tumors. - In nonfunctioning carcinoid, the PI3K/AKT/mTOR pathway is activated. - Although mTOR is clearly an attractive therapeutic target in tumor, no clinical study on mTOR inhibition by RAD001 have been conducted in pheochromocytoma or extra-adrenal paraganglioma or non-functioning carcinoid. - So we design this phase II study of RAD001 in pheochromocytoma or extra-adrenal paraganglioma or non-functioning carcinoid to evaluate the efficacy of RAD001 in this orphan disease.