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 main aims of the study are to learn about the percentage of mucopolysaccharidosis type II (MPS II) in adults in Brazil as well as about the diagnosis process. No study medicines will be provided to participants in this study. The data available for participants diagnosed with MPS II in DATASUS (a database of the Informatics Department of Brazilian Health System) will be reviewed. No clinic visits will be required as part of participation in this study.
This study is a phase III Randomized Clinical Trial, prospective, placebo controlled of 12,268 subjects with low to moderate risk of stroke followed by 3 years in 60 Primary Health Care Units in Brazil. The units will be randomized (clusters) to use or not the approach of community health workers with the Stroke Riskometer. After, patients will be randomized to receive the polypill (valsartan 80 mg, amlodipine 5 mg and rosuvastatin 10 mg) or placebo (dose adjustment of amlodipine 2,5 for patients with adverse events). The purpose is to test whether a polypill alone or in combination with lifestyle modification will reduce the incidence of stroke and cognitive impairment in this population.
IMPAACT 2028 is an observational prospective study to characterize a cohort of early treated children who may participate in future research related to HIV remission or cure. Up to approximately 250 participants will be in the study for approximately seven years. No intervention is provided in the study.
Multicenter, open-label, randomized, controlled phase III clinical trial to evaluate and compare the activity and safety of two experimental arms consisting of lurbinectedin as single agent (Group A) or the combination of lurbinectedin with irinotecan (Group B) versus Investigator's Choice (topotecan or irinotecan) as control arm (Group C), in Small-cell Lung Cancer (SCLC) patients who failed one prior platinum-containing line.
This study is being done to find out if zanidatamab, when given with chemotherapy plus or minus tislelizumab, is safe and works better than trastuzumab given with chemotherapy. The patients in this study will have advanced human epidermal growth factor 2 (HER2)-positive stomach and esophageal cancers that are no longer treatable with surgery (unresectable) or chemoradiation, and/or have grown or spread to other parts of the body (metastatic).
Rehabilitation for work-related musculoskeletal disorders involves physical, behavioral, psychological treatment and counseling on how to deal with pain and disability. The study aims to evaluate the profile and indicators on the perception of health, pain intensity, and work ability (WA) of disability with work-related chronic musculoskeletal disease, assisted in a multidisciplinary program of worker health care.
Among the strategies that can improve the body's ability to counteract oxidative stress, the use of nutritional antioxidants has been investigated. Taurine is a "semi-essential" amino acid, also called a nitrogen compound, which has been used as an effective antioxidant due to its ability to neutralize hypochlorous acid, an extremely toxic oxidant produced by leukocytes in the inflammatory process in humans.
The present work seeks an alternative to the copper IUD for contraception in breast cancer patients, evaluating the satisfaction and continuity of the copper and silver IUD, as well as the quality of life, compared to the copper IUD, especially in the regarding the menstrual bleeding pattern of these patients and possible mechanisms that justify such differences. A randomized (1:1) controlled clinical trial is proposed. Women between 18 and 45 years of age, diagnosed with breast carcinoma through histopathological study, who have had at least one vaginal sexual intercourse in life and wish to use intrauterine contraception will be included.
Spinal cord stimulation (SCS) for Parkinson´s disease (PD) has been studied for a decade but consensus on efficacy is still lacking, with the previous stimulation standard paresthesia inducing threshold hampering adequate subject blinding. Considering that tonic stimulation for pain has been shown to be efficacious for most patients on subthreshold stimulation parameters we hypothesize a similar result with it´s use on PD. The investigators aim to: 1. Produce stronger evidence on SCS efficacy for PD in regards to gait, motor scores and quality of life measures by incorporating subthreshold in a randomized cross over placebo-controlled study with a large sample. 2. Identify predictors of good response to SCS therapy by performing trans spinal magnetic stimulation (TSMS) before SCS implant and correlating the response to SCS to that of the noninvasive TSMS. 3. Better provide biomarkers of SCS therapy through functional magnetic resonance imaging and electroencephalographic mapping.
The main objective of the study is to assess the effect of treprostinil palmitil inhalation powder (TPIP) compared with placebo on pulmonary vascular resistance.