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.
This study will evaluate the pharynx in patients undergoing lateral pharyngoplasty for treatment of obstructive sleep apnea through MRI, before and 6 months after surgery.
This randomized, multicenter, 2-arm, open-label study (TH3RESA) will evaluate the efficacy and safety of trastuzumab emtansine (T-DM1) in comparison with treatment of the physician's choice in patients with metastatic or unresectable locally advanced/recurrent HER2-positive breast cancer. Eligible patients will be randomized to receive either trastuzumab emtansine 3.6 mg/kg intravenously every 21 days or treatment of the physician's choice. Patients continue to receive study treatment until disease progression or unacceptable toxicity occurs. This study is also known under Roche study protocol number BO25734.
The purpose of this study is to evaluate the benefit of panitumumab in addition to best supportive care compared to best supportive care alone in patients with chemorefractory wild-type KRAS (Kirsten rat sarcoma viral oncogene homolog) metastatic colorectal cancer.
The main objective of this study is to evaluate the effectiveness of music education over a period of five months (three times per week, one hour per day) on the improvement of reading skills (decoding, prosody and phonological awareness) in children (8-10 years) with reading difficulties from poor neighborhoods in the city of Sao Paulo. A second objective is to develop a theoretical model that may explain how acquired musical skills are correlated with the supposed changes in each of the covariates and outcomes in this study. The study will be administered to 270 children with reading difficulties from 10 different schools (27 children per school). 135 children will have music lessons and 135 will not; therefore, 5 schools will be the control and 5 schools will be the intervention group. The analysis will consider the cluster structure, since the randomization was not conducted at the individual level (i.e., the school level was the randomization unit). For the inferential analysis, generalized estimation models and structural equation modeling will be used.
Rubber band ligation is a widely adopted treatment of internal hemorrhoids in busy coloproctology institutions. All three major hemorrhoidal clusters (left lateral, right anterior and right posterior) use to be ligated in order to obtain therapeutic success. It is commonly performed either through the ligation of a single hemorrhoid per session spaced by some few weeks to the second and third sessions, or of all three major hemorrhoids in one single session. Advocates of either method of hemorrhoidal ligation have arguments to defend their choice in terms of advantages, supported mainly on personal preferences. The investigators objective is to determine, through a controlled double-blinded randomized study, if there is any superiority of single hemorrhoidal ligation per session (in a total of three sessions) over the method of ligation of all three main hemorrhoids in a sole session in terms of therapeutic success (resolution of pre-ligation symptoms), morbidity, patient satisfaction and costs (institutional, labor and patient-related).
In this study the investigators compare the difficulty at insertion of IUD between nulliparous and parous women. The investigators compare the pain reported by the patient to the difficulty reported by the professional that performed the insertion. The investigators hypothesis is that there is no difference between nulliparous and multiparous patients.
The role of micronutrients in diabetes is not well understood. Studies have demonstrated the relationship between low chromium serum levels and insulin resistance. This study aims to evaluate the effect of chromium nicotinate on increasing insulin sensitivity in patients with type 2 diabetes.
The objective is evaluate, in healthy volunteers, the bioavailability of two products containing metformine 500 mg to determine if they are bioequivalent and identify the occurrence of adverse events.
The purpose of this study is to evaluate whether overall survival for the trabectedin group is superior to the dacarbazine group for patients with advanced L-sarcoma (liposarcoma or leiomyosarcoma).
Recent evidences suggest that obstructive sleep apnea (OSA) can contribute to cardiovascular disease even in the absence of hypertension. However, there are few data regarding the impact of OSA on the sympathetic system in apparently normotensive patients with OSA as well as the impact of treatment with continuous positive airway pressure in different sites of activation (heart, peripheral nerves and circulating catecholamines)