Active clinical trials for "Kidney Neoplasms"

This is a dose escalation study using the CyberKnife radiotherapy device for small surgical or medically untreatable renal tumors. Patients with renal tumors 5cms or less in diameter will be accrued onto this study. The ability of CyberKnife to ablate these renal tumors and maintain renal function with dose escalation will be assessed.

The purpose of this study is to describe the postoperative outcomes after laparoscopic transperitoneal nephrectomy and compare them with hand assisted laparoscopic nephrectomy with a focus on the limiting factors that prevent an ambulatory nephrectomy, and the benefit of our experiences from the previous study to optimize the postoperative outcomes.

Stereotactic radiotherapy is a technique that allows the delivery of a high dose of radiation over few fractions (3-6) with great precision. It thus allows "tumor ablation" and optimal preservation of healthy tissues. Initially developed in small-sized (<5 cm) lung cancers this technique it gives results very close and or even equivalent to those of surgery. Stereotactic radiotherapy of brain metastases of renal cancers has shown that high doses of radiation allows local control in 90 to 98% of cases. A study conducted in Sweden (Wersall et al.) underline the interest to develop stereotactic radiotherapy in primary renal tumors. In Cleveland (USA) two phase I studies are already underway. The investigators propose to develop a phase I study for tumors of less than 4 cm. As found in lung cancers, stereotactic radiotherapy can provide a non-invasive, painless and rapid (4 to 5 fractions) method for the treatment of renal cancers with a high rate of local control. The primary objective is to define the maximal tolerated dose for one fraction in stereotactic mode of renal tumors ≤ 4 cm in length using an a four-step dose increase: Step 1: 4 x 8 Gy. Step 2: 5 x 8 Gy. Step 3: 4 x 10 Gy. Step 4: 4 x 12 Gy. The patients will be followed during treatment with evaluation of acute toxicities before each session, then at 15 days, 6 weeks, 3 months, 9 months, 12 months, and then every 6 months for a total duration of 5 years after treatment.

Renal hypothermia may preserve renal function in patients who require partial nephrectomy. In preparation for a definitive randomized controlled trial this pilot study will assess feasibility and variance data to be used for sample size estimation

The purpose of this study is to find out if renal cell (kidney) cancer that has spread to other parts of the body will respond to treatment with motexafin gadolinium (MGd).

A prospective, randomized, controlled study designed to assess whether digital virtual reality (VR) models, created from existing CT scans and MRIs, provide surgeons with an improved understanding of their patients' anatomy, resulting in more efficient operations (robotic partial nephrectomy) and improved patient care.

After partial nephrectomy, kidney function decreases by about 10% overall and by about 20% in the operated kidney. This is primarily due to the loss of healthy parenchymal volume during resection of the tumor. In an effort to preserve and regenerate healthy parenchyma during the procedure and ultimately renal function after partial nephrectomy, the single center double arm single-blinded randomized screening clinical trial will evaluate the ability of human amnion/chorion allograft to facilitate the recovery of renal function following robotic partial nephrectomy.

Standard treatment for early stage bladder cancer is chemotherapy with methotrexate (M), vinblastine (V), adriamycin (A), and cisplatin (C) followed by surgical removal of any remaining cancer and the bladder with the intent of cure. The M V chemotherapy is usually given every 14 days with the AC given along each 28 days. This study looks at giving the same drugs at the same doses closer together, all drugs every 14 days, with the support of growth factor medication to promote growth of the white blood cells and platelets and allow chemotherapy to be finished sooner and surgery to be done sooner.

Several technological challenges exist to apply Magnetic Resonance guided High Intensity Focused Ultrasound (MRgHIFU) for treatment of liver or kidney in particular challenges related to the motion of these organs. This study tests a new software to improve thermometry accuracy in mobile organs in patients with liver or kidney tumors. In the same time, the trajectory of the target in 3D is analyzed.

This study will follow-up immune cell populations, secreted factors and released nanovesicles in the blood before, during and after high dose radiation therapy which should give new information of the efficacy of the hypofractionated high dose radiation therapy and a rationale for adjuvant immunotherapy.