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.
Neoplasia is the main cause of general death in the Brazilian population. In 2016, they were responsible for approximately 211,343 (16%) deaths, followed by cardiovascular diseases (12.6%). Despite the high mortality rate of neoplasia, oncological treatment have advanced substantially in recent decades improving the prognosis of patients. However, growing evidence suggest that some oncological agents may induce significant toxicity that may play a major role in the quality of life, morbidity and mortality. The cardiovascular system is often negatively affected with cancer therapy, predisposing several patients to stop appropriate treatments or to have cardiovascular events related to the cardiotoxicity. The most typical manifestation of cardiotoxicity and related consequences (heart failure) are related to the use of anthracyclines. Anthracyclines are part of the chemotherapy regimen for solid tumors and hematological neoplasms in children and adults, and are associated with an increase in life expectancy. Carvedilol is an α and β-blocker that also has antioxidant properties. Preliminary studies have shown that carvedilol and its metabolites prevent lipid peroxidation, inhibit the formation and inactivate free radicals, in addition to preventing the depletion of endogenous antioxidants, such as vitamin E. These effects would potentially prevent anthracycline injury but definitive evidence is still needed. This is a multi-center, double-blind, randomized, placebo-controlled study that aims to establish the efficacy of carvedilol for the primary prevention of left ventricular systolic dysfunction in cancer patients obtained with anthracycline chemotherapy, in different schedules and doses.
B-alanine supplementation is highly efficient in increasing intramuscular carnosine content, leading to improved physical performance, especially in high-intensity exercises (HIIE). It seems that exercise per se can modulate carnosine content; however, it remains uncertain whether physical training or training status can influence B-alanine supplementation responses. Thus, this work aims to assess whether HIIE can increase B-alanine uptake by peripheral tissues and, more specifically, skeletal muscle and increase intramuscular carnosine synthesis. The volunteers will be evaluated in two conditions: intake of B-alanine + exercise (B-EX) and B-alanine intake only (B-Ala). This process will be divided into two blocks of six days (Thursday to Thursday - without the weekend) with a 4-6 weeks washout. In the B-EX block, a 20-minute HIIE session will be held. In the B-Ala block, the same procedures will be adopted for the B-EX block, with the replacement of the HIIE for 20 minutes of rest sitting on the cycle ergometer. We will evaluate the determination of muscle B-alanine, plasma, and urine, the gene expression of carnosine-related enzymes and transporters, the enzymes Carnosine Synthase 1 (CARNS1), carnosine dipeptidase 2 (CN2), taurine transporter (TauT), PAT1, and phosphorylated Na + / K + / ATPase. The hypotheses are: 1) acute physical exercise increases the uptake of B-alanine by the skeletal muscle; 2) this effect is mediated by the increased activity of the Na + / K + / ATPase pump; 3) this effect, when repeated over five training sessions, results in observable increases in β-alanine → carnosine conversion in skeletal muscle.
This is a randomized clinical trial with women with lymphedema secondary to breast cancer. The intervention will consist of the use of self-adjusting clothing versus compressive bandaging (routine treatment of the institution). Self-adjusting clothing is expected to be more effective for the treatment of lymphedema reduction, when compared to standard treatment, in addition to promoting a better quality of life and functionality.
Cancer is a condition where cells in a specific part of body grow and reproduce uncontrollably. Non-small cell lung cancer (NSCLC) is a solid tumor, a disease in which cancer cells form in the tissues of the lung. The purpose of this study is to determine if telisotuzumab vedotin works better than docetaxel and to assess how safe telisotuzumab vedotin is in adult participants with NSCLC who have previously been treated. Change in disease activity and adverse events will be assessed. Telisotuzumab vedotin is an investigational drug being developed for the treatment of NSCLC. Participants will be randomly assigned a treatment of Teliso-V or Docetax at an 1:1 ratio. Each group receives intravenous (IV) infusion of telisotuzumab vedotin or IV infusion of docetaxel. Approximately 698 adult participants with c-Met overexpressing NSCLC will be enrolled in the study in approximately 250 sites worldwide. Participants will receive IV telisotuzumab vedotin every 2 weeks or docetaxel every 3 weeks until meeting study drug discontinuation criteria. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at a hospital or clinic. The effect of the treatment will be checked by medical assessments, blood tests, checking for side effects and completing questionnaires.
Rheumatoid arthritis (RA) is a chronic inflammatory disease that affects the joints, causing pain, edema, physical disability and poor quality of life. In addition, RA patients are at increased risk of developing cardiovascular disease (CVD) and premature death. The most effective pharmacological treatment is the use of biological agents that inhibit the action of specific substances, such as interleukin 6 (IL-6) and tumor necrosis factors (TNF). Physical exercise is considered a first-line non-pharmacological treatment in RA, improving inflammatory and metabolic profile, functional capacity, fatigue and preventing the onset of CVD. There is evidence that IL-6, when secreted as a result of exercise, brings several benefits. However, there is no study investigating the interaction between biological IL-6 blocking agents and exercise on metabolic responses, such as insulin sensitivity and glucose uptake, in patients with RA. To answer this question, adult women diagnosed with RA and healthy controls will be recruited for an acute session of exercise. RA patients will be divided into 2 groups, according to the pharmacological treatment (tocilizumab or anti-TNF). The acute responses of insulin sensitivity after an acute session of exercise will be assessed by the hyperinsulinemic euglycemic clamp, and the molecular pathways will be assessed by muscle biopsy and gene and protein expression analysis. Positron emission tomography-magnetic resonance imaging (PET/MRI) will be performed to quantify skeletal muscle glucose uptake.
Efficacy and safety of ofatumumab and siponimod compared to fingolimod in pediatric patients with multiple sclerosis
The purpose of this study is to compare the efficacy of Bortezomib, Lenalidomide and Dexamethasone (VRd) induction followed by a single administration of ciltacabtagene autoleucel (cilta-cel) versus VRd induction followed by Lenalidomide and Dexamethasone (Rd) maintenance in newly diagnosed multiple myeloma participants for whom ASCT is not planned as initial therapy in terms of Progression Free Survival (PFS).
The purpose of this study is to evaluate crovalimab for the treatment of a sickle cell pain crisis (also known as a VOE) that requires hospitalisation in adult and adolescent participants with SCD. The primary objective of this study is safety and will additionally evaluate pharmacokinetics (how crovalimab is processed by your body), pharmacodynamics (how your body reacts to crovalimab) and the preliminary efficacy of crovalimab compared with placebo.
Skin aging is an irreversible, slow and progressive process, being influenced mainly by age, but also by external factors such as ultraviolet radiation, smoking, alcohol, among others. Studies have shown benefits of photobiomodulation for facial rejuvenation, especially with the use of red LED. However, there is still a high level of variability in treatment parameters and frequency of application of FBM. The purpose of this study is to compare the effects of photobiomodulation with LED mask (660nm, 6.4 mW/cm², 2.67 J/cm², 5.02 mW, 21 min) on facial rejuvenation using 2 application frequencies: a group will receive 2 weekly applications for 4 weeks and another group will receive 3 weekly applications for the same period. A group with simulated photobiomodulation applied twice a week for 4 weeks will be used as a control. The treatment will be performed in female participants aged between 45 and 60 years. After a period of one month, the depth and width of wrinkles (assessment of face impressions by optical coherence tomography), evaluations of photographic images by specialists (Wrinkle Assessment Scale), as well as the quantitative analysis of the wrinkle size by the Image J software and the level of satisfaction of the participants (FACE-Q) will be compared with data collected before the start of the study. All data will be statistically analyzed according to their distribution, seeking a level of statistical significance of 5%.
Introduction: The overactive bladder is a highly prevalent condition, which negatively impacts the quality of life and daily activities of women. Transcutaneous electrostimulation is currently a therapeutic alternative for urinary urgency symptoms. Although it can be applied to the sacral plexus or tibial nerve, the literature shows the effectiveness of these two modalities, in isolation, but there are few scientific studies that compare them as two therapeutic alternatives. Primary objective: to evaluate the efficacy between parascutaneous electrostimulation, tibial transcutaneous stimulation, and home protocol in the treatment of female overactive bladder. Methodology: This is a clinical trial, which will include women with a clinical complaint of overactive bladder, with or without urgency-incontinence, who will be randomized into 3 groups: transcutaneous parasacral electrostimulation (EETP), transcutaneous tibial electrostimulation (EETT) and a third group, home transcutaneous parasacral electrostimulation (EETPD), will consist of women who have financial difficulties or locomotion to attend the clinic.All groups, in the first session, will be guided to conduct behavioral therapy and will receive an educational booklet with guidelines. The equipment to be used will have a wave frequency of 10 Hz, a pulse width of 700 µs and a 20-minute session, with intensities according to the participant's tolerance. The intervention protocol of the EETP group is 30 sessions, three times a week, with an active electrode in the parasacral region. For EETT, 30 sessions will also be held, three times a week, with the electrode active in the tibial region. Participants will be captured at educational events held by the Pelvic Floor Service Center in Salvador and the metropolitan region. Participants will answer the basic anamnesis questionnaires, ICIQ-OAB, ROMA III criteria, Bristol scale, Hospital Anxiety and Depression Scale, Oswestry scale, Pittsburgh sleep quality index and Female Sexual Function Index. Then, the assessment of the bladder neck and the thickness of the bladder wall will be performed by 2D ultrasonography via suprapubic and intravaginal, following the assessment protocol described for the intervention groups. Primary outcomes: clinical improvement of symptoms, urinary frequency, episodes of urgent urinary incontinence, presence of adverse effects and constipation. Secondary outcomes: quality of life, sexual function, quality of sleep, anxiety and depression, muscle function (PERFECT and electromyography), lumbar-pelvic pain (pain intensity) and ultrasound. Participants will be followed for a minimum of 12 months to verify the long-term response, returning every 3 months. Expected results: The outpatient transcutaneous parasacral electrostimulation is expected to be superior when compared to the tibial transcutaneous electrostimulation in the resolution of the symptoms of the overactive female bladder.