There are about 173942 clinical studies being (or have been) conducted in United States. 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.
The purpose of this clinical research study is to answer the following questions using 18F-fluoromisonidazole as an imaging agent: 1. Do cells exist in human tumors that are at very low oxygen levels (hypoxic cells)? 2. If hypoxic cells exist in human tumors, do they effect the ability of radiotherapy to control human tumors? 3. Can Positron Emission Tomography (PET scanning) detect hypoxic cells in human tumors?
The participant will receive weekly intramuscular treatment with AVONEX® (interferon beta 1-a) and a one-time high dose intravenous methotrexate with Leucovorin rescue, along with the standard solumedrol treatment before beginning AVONEX® treatment.
The purpose of this study is to see if certain vitamins (C, E, B1, and B2) can keep lactate levels from becoming too high in patients who are taking nucleoside reverse transcriptase inhibitor (NRTI) anti-HIV drugs. Some patients taking anti-HIV drugs develop hyperlactatemia. Hyperlactatemia is a condition in which lactate (a natural substance normally present in the body) levels are too high. Too much lactate in the body can lead to serious health problems. When patients suffer from hyperlactatemia while taking anti-HIV drugs, most doctors temporarily stop the drugs. Patients then restart the anti-HIV drugs when their lactate levels return to normal. If patients restart the same drugs they were taking when they developed hyperlactatemia, there is a risk that they may develop high lactate levels again. This study wants to find out if taking antioxidants (substances that reduce tissue damage due to oxygen radicals) and certain B vitamins may help prevent patients from developing hyperlactatemia when they restart the same anti-HIV drugs.
The purpose of this study is to see if magnetic resonance spectroscopy (MRS) can be used to detect damage to the mitochondria in HIV-infected patients taking nucleoside reverse transcriptase inhibitor (NRTI) drugs. HIV-infected patients taking NRTI drugs may have an increase in a chemical in their blood called lactate. High lactate levels may damage the energy source of the cell (mitochondria). Damage to mitochondria may cause lactic acidosis, liver failure, and other problems. It is important to find effective ways to see if the mitochondria of HIV-infected patients have been damaged. This study will see if MRS can be used to determine mitochondrial damage.
RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. PURPOSE: Phase I/II trial to study the effectiveness of homoharringtonine in treating patients who have refractory acute promyelocytic leukemia.
The purpose of this study is to test the effectiveness and tolerability of garlic pills in lowering cholesterol and triglycerides in hyperlipidemic HIV-infected individuals who are being treated with highly active antiretroviral therapy (HAART).
RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of celecoxib may be an effective way to prevent actinic keratoses. PURPOSE: Randomized phase II/III trial to determine the effectiveness of celecoxib in preventing skin cancer in patients who have actinic keratoses.
RATIONALE: Radiolabeled monoclonal antibodies can locate tumor cells and deliver tumor-killing substances to them without harming normal cells. This may be an effective treatment for gastrointestinal cancer. PURPOSE: Phase I trial to study the effectiveness of radiolabeled monoclonal antibody therapy in treating patients who have gastrointestinal cancer.
RATIONALE: Celecoxib may be effective in preventing skin cancer by decreasing redness caused by exposure to ultraviolet light and changing potential skin cancer biomarkers. It is not yet known whether celecoxib is more effective than a placebo in preventing skin cancer. PURPOSE: Randomized phase II trial to study the effectiveness of celecoxib in preventing skin cancer in participants exposed to ultraviolet light.
Although Neopharm has terminated its sponsorship of this study, it is continuing under the sponsorship of the NCI. Please contact Raffit Hassan, MD at 301-451-8742 for more information. Also see the related NCI study "Experimental Drug SS1(dsFv)-PE38 to Treat Cancer" (Study ID number 010011). SS1(dsFv)-PE38 is an oncology drug product containing a bacteria toxin, fused to a high affinity, disulfide stabilized antibody. The fused protein retains cell killing activity, but binds only to cells expressing mesothelin. Tumors characterized by very high surface mesothelin expression include mesothelioma; epithelial carcinomas of ovary and peritoneum; and squamous cancers of cervix and upper aerodigestive tract, including esophagus, head, and neck cancers. This is a dose-escalating study to determine the maximum tolerated dose (MTD) of intravenous SS1(dsFv)-PE38 administered once every other day for six doses. Dose escalation will proceed in cohorts of 3 until dose-limiting toxicity (DLT) is observed.