There are about 10004 clinical studies being (or have been) conducted in Brazil. 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 study is to assess the safety and efficacy of tenofovir disoproxil fumarate (tenofovir DF; TDF) plus a genotype-guided optimized background regimen (OBR) compared to placebo plus OBR in the treatment of human immunodeficiency virus type 1 (HIV-1) infected antiretroviral treatment-experienced adolescents with plasma HIV-1 ribonucleic acid (RNA) levels greater than or equal to 1000 copies/mL.
Rosiglitazone (RSG) has been tested in clinical studies and is approved by the FDA as a treatment for type II diabetes mellitus, a disease that occurs when the body is unable to effectively use glucose. RSG XR, the investigational drug used in this study, is an extended-release form of RSG. This study tests whether RSG XR safely provides clinical benefit to people with mild to moderate Alzheimer's disease (AD) when combined with the currently approved AD medication, Aricept (donepezil). RSG XR is a new approach to AD therapy and this study tests a new way to treat AD by testing whether one's genetic makeup affects their response to the study drug. Clinical data suggesting that RSG may benefit AD patients was first seen in a small study performed at the University of Washington and then from a larger GSK study conducted in Europe and New Zealand. In the first study, subjects receiving RSG once daily for 6 months scored significantly better on 3 tests of memory and thought than those who did not receive RSG. In the GSK study, those that appeared to benefit most from treatment with RSG XR had a specific genetic pattern. They did not have the gene that caused them to produce the protein apolipoprotein E e4 (APOE e4). Subjects who have the APOE e4 gene may have two copies, one from each parent, or they may have only one APOE e4 gene meaning that they inherited either the APOE e2 or APOE e3 version of the gene, instead of APOE e4, from one of their parents. Subjects with one copy of the APOE e4 gene remained at their same level of thinking ability while those with two copies of the APOE e4 gene, continued to worsen during the 6-month treatment. The current study will more directly test the effectiveness or RSG XR on people who either have or lack the APOE e4 gene.
Purpose:To compare visual performance, total and high order wavefront aberrations (coma, spherical aberration and other terms) and contrast sensitivity in eyes implanted with one monofocal aspheric intraocular lens (IOL) and two spherical IOLs (SofPort AO, Soflex,AcrySof®IQ (40 eyes), AcrySof®Natural and AMO®Sensar)
To answer the question of overall benefit: risk of celecoxib when compared to two most commonly prescribe traditional (non-selective) nonsteroidal anti-inflammatory drugs (NSAIDs) in the treatment of arthritis pain. For this purpose, patients with osteoarthritis or rheumatoid arthritis with or at risk of developing cardiovascular disease will be recruited. The cardiovascular, gastrointestinal and renal safety and symptomatic benefit in each treatment group will be assessed accordingly.
Objectives are to evaluate whether idrabiotaparinux (SSR126517E) is as least as effective as a standard warfarin treatment to prevent recurrence of venous thromboembolic events (VTE) in patients with symptomatic pulmonary embolism (PE) with or without symptomatic deep venous thrombosis (DVT) and to assess its safety (bleedings) versus warfarin.
The purpose of the study is to determine if daily teriparatide reduces back pain more effectively than weekly risedronate in women with osteoporosis who have chronic back pain due to a spinal bone fracture.
Visceral leishmaniasis is a potentially fatal disease caused in South America by the protozoan Leishmania chagasi. In neighborhoods with high exposure rates, the outcome of human infection with L. chagasi ranges from asymptomatic to a disseminated wasting disease called visceral leishmaniasis (VL). Several studies document familial clustering of VL in populations at risk. Segregation analyses favor a genetic over an environmental model for susceptibility to L. chagasi infection. A peri-urban outbreak of VL near the Universidade Federal do Rio Grande do Norte (UFRN) in Natal, northeast Brazil, has allowed us to identify endemic neighborhoods with ongoing transmission of L. chagasi infection. Natal is ideal for this study because endemic neighborhoods are easily accessible, people are motivated to cooperate with measures to control VL, and other forms of leishmaniasis are not transmitted in the region. Dr. Jeronimo of the UFRN, and Dr. Mary Wilson at University of Iowa have collected clinical data and DNA from 400 VL families living in these endemic neighborhoods. We have created an unprecedented cohort through which we can identify four distinct phenotypic responses after L. chagasi exposure. We documented familial clustering of L. chagasi infection, and results of both correlation and segregation analyses are consistent with the hypothesis that genetic factors predispose, in part, to the diverse clinical outcomes after infection. Polymorphism in the TNF locus is associated with developing symptomatic as opposed to asymptomatic disease after infection. We recently completed a genome-wide scan of the quantitative immune response (DTH) and identified potential linkage regions on chromosomes 2, 13, 15 and 19. We have also identified a small linkage peak on chromosome 9 for VL. In our ongoing study, we will next perform fine mapping of these regions using dense SNPs to identify genes that may determine susceptibility to L. chagasi infection. Additionally, we will also analyze candidate genes for association/linkage with susceptibility to or protection from L. chagasi disease. We recently identified an association on chromosome 5 with the DTH immune response among two linkage disequilibrium blocks spanning multiple immune related genes.
The Second Multicenter Hemophilia Cohort Study (MHCS-II) will evaluate and prospectively follow approximately 4500 persons with hemophilia who were exposed to hepatitis C virus (HCV). The vast majority will have been infected with HCV, and approximately 1/3 will have been infected with human immunodeficiency virus (HIV). Primary objectives are to quantify the rates of liver decompensation, hepatocellular carcinoma, and non-Hodgkin lymphoma and to evaluate candidate clinical, genetic, virologic, serologic and immunologic markers that are likely to be on the causal pathway for these conditions. Candidate clinical and laboratory markers will be examined longitudinally to define changes over time and their relationships to one another. Collaborative studies will focus on genome scanning and evaluation of candidate genetic loci for susceptibility or resistance to HCV and HIV infections or to the diseases that result from these infections. Additional studies will identify response and complication rates of various anti-HCV and anti-HIV regimens in the setting of comprehensive clinical care of persons with hemophilia.
By the end of 1999, it was estimated that 1.2 million children were living with HIV infection. During 1999 alone, 600,000 children were newly infected with HIV, mostly in less-developed countries. Most HIV-infected children are infected by transmission from mother to child during pregnancy, at birth, or through breast milk. Antiretroviral medications, cesarean section before rupture of membranes, and avoidance of breastfeeding are ways to reduce the risk of transmission. This study will determine mother-to-child transmission rates and the effects on infants of exposure to antiretroviral medications and mode of delivery. Approximately 180 to 240 HIV-infected pregnant women in Mexico and Argentina will be enrolled during the first year of this 5-year study. HIV-infected women will be evaluated during pregnancy, during delivery, and 6 months after delivery. At each visit, a history will be taken and physical examination given; blood will be collected for laboratory tests. HIV-exposed infants will be evaluated through 6 months of age. At each of 2 visits, a history will be taken and physical examination given; blood will be collected for laboratory tests; and growth will be assessed.
This study assessed the safety, tolerability, and efficacy of 2 doses of oral fingolimod versus interferon β-1a to reduce the frequency of relapses in patients with relapsing-remitting multiple sclerosis.