There are about 7997 clinical studies being (or have been) conducted in Japan. 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 fluorouracil and cisplatin, work in different ways to stop tumor cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage tumor cells. Combining fluorouracil and cisplatin with radiation therapy may kill more tumor cells. PURPOSE: This phase II trial is studying how well giving fluorouracil and cisplatin together with radiation therapy works in treating patients with stage II, stage III, or stage IV nasopharyngeal cancer.
RATIONALE: Drugs used in chemotherapy, such as S-1 and cisplatin, work in different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells. Giving combination chemotherapy before surgery may shrink the tumor so that it can be removed. PURPOSE: This phase II trial is studying how well giving S-1 together with cisplatin works in treating patients who are undergoing surgery for stage IV gastric cancer.
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.