There are about 9403 clinical studies being (or have been) conducted in Switzerland. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
RATIONALE: Interferon alfa may interfere with the growth of the cancer cells and slow the growth of kidney cancer. Isotretinoin may help kidney cancer cells develop into normal cells. It is not yet known whether interferon alfa plus isotretinoin is more effective than interferon alfa alone for kidney cancer. PURPOSE: Randomized phase III trial to compare the effectiveness of interferon alfa with or without isotretinoin in treating patients who have metastatic kidney cancer.
Phase I trial to study the effectiveness of topotecan in treating children with refractory leukemia. Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die.
Phase II trial to study the effectiveness of radiation therapy following chemotherapy in treating children with CNS relapse from acute lymphoblastic leukemia. Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Combining chemotherapy with radiation therapy may kill more cancer cells.
RATIONALE: Some cancers become resistant to chemotherapy drugs. Combining cyclosporine with chemotherapy may prevent resistance to the drugs and allow the cancer cells to be killed. PURPOSE: Randomized phase II trial to study the effectiveness of adding cyclosporine to combination chemotherapy in treating patients with relapsed or refractory acute myeloid leukemia.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Interferon alfa may interfere with the growth of the cancer cells. Interleukin-2 may stimulate a person's white blood cells to kill melanoma cells. It is not yet known which treatment regimen is more effective in treating melanoma. PURPOSE: Randomized phase II trial to compare the effectiveness of two regimens of combination chemotherapy plus interferon alfa and interleukin-2 in treating patients who have metastatic melanoma.
RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known if radiation therapy plus chemotherapy is more effective than radiation therapy alone in treating patients with advanced head and neck cancer. PURPOSE: Randomized phase III trial to compare the effectiveness of radiation therapy plus cisplatin with radiation therapy alone in treating patients with advanced head and neck cancer.
Phase II trial to study the effectiveness of combination chemotherapy in treating patients with newly diagnosed metastatic Ewing's sarcoma or primitive neuroectodermal tumor. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known whether giving chemotherapy after surgery is more effective than surgery alone in treating soft tissue sarcoma. PURPOSE: Randomized phase III trial to compare the effectiveness of surgery with or without chemotherapy in treating patients who have soft tissue sarcoma.
RATIONALE: Interferon alfa may interfere with the growth of cancer cells. PURPOSE: Phase II trial to study the effectiveness of interferon alfa in treating children with an HIV-related cancer including leukemia, non-Hodgkin's lymphoma, CNS lymphoma, or other solid tumors.
RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells and may be an effective treatment for patients with anaplastic astrocytomas. PURPOSE: Randomized phase III trial to study the effectiveness of radiation therapy in treating patients with anaplastic astrocytomas.