There are about 2656 clinical studies being (or have been) conducted in Puerto Rico. 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 trial is to study genetic and other risk factors that may be important in the development of Parkinson's disease.
RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells. Drugs used in chemotherapy work in different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known whether radiation therapy alone is as effective as chemotherapy plus radiation therapy in treating germ cell tumor. PURPOSE: This randomized phase III trial is studying radiation therapy alone to see how well it works compared to chemotherapy and radiation therapy in treating patients with newly diagnosed primary CNS germ cell tumor.
To determine if linezolid is superior to vancomycin in the treatment of nosocomial (acquired in the hospital) pneumonia due to Methicillin Resistant Staphylococcus Aureus (MRSA) in adult subjects. Subjects entered in to the study will have proven healthcare-associated methicillin-resistant Staphylococcus aureus pneumonia which will be treated with either linezolid or vancomycin.
The purpose of this study is to determine the effect of increased doses of lopinavir/ritonavir (LPV/r) and saquinavir (SQV) in HIV infected children who are failing their current antiretroviral regimen
Long-term side effects, the expense of medications, and the difficulty of taking medications continuously for long periods of time are all problems with complicated anti-HIV drug regimens. The purpose of this study is to determine whether two drugs, atazanavir (ATV) and ritonavir (RTV), will control HIV infection when taken together without any other anti-HIV drugs after 48 weeks of viral suppression. Hypothesis: Simplified maintenance therapy with ATV and RTV alone after virologic suppression does not markedly increase the risk of virologic failure.
RATIONALE: The MAP.3 study was designed to test whether hormone therapy using exemestane may prevent breast cancer by blocking the production of estrogen. PURPOSE: The study protocol was amended in May 2011 and the current purpose of the study is to allow all study participants the opportunity to complete 5 years of exemestane.
This is a multicenter, comparator-controlled, open-label, randomized, two-arm, parallel trial to compare the effect of exenatide twice daily and insulin glargine on glycemic control, as measured by hemoglobin A1c (HbA1c).
This study will assess the efficacy and safety of intravenous (iv) or subcutaneous (sc) Mircera, administered with pre-filled syringes, as maintenance treatment for renal anemia in chronic kidney disease patients on dialysis who were previously receiving iv or sc epoetin. The anticipated time on study treatment is 3-12 months and the target sample size is 100-500 individuals.
This study will assess the efficacy and safety of subcutaneous Mircera in the treatment of renal anemia in patients with chronic kidney disease who are not on dialysis and not receiving epoetin or any other erythropoietic substance. The anticipated time on study treatment is 1-2 years and the target sample size is 100-500 individuals.
HIV vaccines may help the immune systems of HIV infected patients better control the virus. The goal of this study is to determine whether patients on anti-HIV medications can stop taking those medications if they receive an HIV vaccine. While taking anti-HIV medications, participants will receive either an HIV vaccine or a placebo. Participants will then stop taking their anti-HIV medications and the study will compare the viral loads of participants who received the vaccine with the viral loads of participants who received the placebo. Primary study hypotheses: 1)The Week 12 and Week 16 post-ART interruption geometric mean HIV-1 RNA levels will be lower among participants who had received MRK Ad5 vaccine prior to ART interruption than among participants who received placebo; 2) the time averaged area under the curve of the log10 HIV-1 RNA copies/ml versus day function in the 16 week post-ART interruption step will be lower among participants who received the MRK Ad5 vaccine prior to ART interruption than among participants who receive placebo.