There are about 3491 clinical studies being (or have been) conducted in Singapore. 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: Drugs used in chemotherapy, such as carboplatin, etoposide, and vincristine, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Sometimes when chemotherapy is given, it does not stop the growth of tumor cells. The tumor is said to be resistant to chemotherapy. Giving cyclosporine together with chemotherapy may reduce drug resistance and allow the tumor cells to be killed. Cryotherapy kills tumor cells by freezing them. Laser therapy uses light to kill tumor cells. Giving combination chemotherapy together with cyclosporine followed by cryotherapy and/or laser therapy may be an effective treatment for retinoblastoma. PURPOSE: This phase II trial is studying how well giving combination chemotherapy together with cyclosporine followed by cryotherapy and/or laser therapy works in treating patients with newly diagnosed retinoblastoma in both eyes.
RATIONALE: Monoclonal antibodies such as trastuzumab can locate tumor cells and either kill them or deliver tumor-killing substances to them without harming normal cells. It is not yet known whether trastuzumab is effective in treating primary breast cancer in women who have completed adjuvant chemotherapy. PURPOSE: This randomized phase III trial is studying two different regimens of trastuzumab and observation only to compare how well they work in treating women with breast cancer.
The purpose of the study is to evaluate the safety and effectiveness of 12 weeks of treatment with clevudine, at one of three doses, in patients chronically infected with hepatitis B virus.
RATIONALE: Radioactive iodine may be effective in reducing the rate of recurrence of liver cancer after surgery to remove the tumor. It is not yet known if radioactive iodine is more effective than no further treatment after surgery. PURPOSE: Randomized phase III trial to determine the effectiveness of radioactive iodine in treating patients who have undergone surgery for liver cancer.
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 whether radiation therapy alone is more effective than radiation therapy plus chemotherapy in treating cancer of the nasopharynx. PURPOSE: This randomized phase III trial is studying how well radiation therapy and chemotherapy works compared to radiation therapy alone in treating patients with previously untreated cancer of the nasopharynx.