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.
During the continuing SARS-CoV-2 (COVID-19) pandemic, several studies have reported a significant difference in the rate of severe cases between adult females and adult males (42% vs 58%). Among children under the age of 14, the rate of severe cases was reported to be extremely low. To explain this difference, several theories have been proposed including cigarette smoking and lifestyle habits. However, no theory fits both the gender difference in severe cases as well as reduced risk in pre-pubescent children. Our past research on male androgenetic alopecia (AGA) has led us to investigate an association between androgens and COVID-19 pathogenesis. In normal subjects, androgen expression demonstrates significant variation between men and women as well as between adults and pre-pubescent children. SARS-CoV-2 primarily infects type II pneumocytes in the human lung. SARS-CoV-2 enters pneumocytes, by anchoring to the ACE2 cell surface receptor. Prior to receptor binding, viral spike proteins undergo proteolytic priming by the transmembrane protease, serine 2 (TMPRSS2). TMPRSS2 inhibition or knock down reduces ability of SARS-CoV-1 (a related virus to SARS-CoV-2) to infect cells in vitro. Additionally, TMPRSS2 also facilitates entry of influenza A and influenza B into primary human airway cells and type II pneumocytes. The human TMPRSS2 gene has a 15 bp androgen response element and in humans, androgens are the only known transcription promoters for the TMPRSS2 gene. In a study of androgen-stimulated prostate cancer cells (LNCaP), TMPRSS2 mRNA expression increase was mediated by the androgen receptor.10 Further, the ACE2 receptor, also critical for SARS-CoV-2 viral infectivity, is affected by male sex hormones with higher activity found in males. Androgenetic alopecia (AGA), often referred to as male pattern hair loss, is the most common form of hair loss among men. The development of androgenetic alopecia is androgen mediated and is dependent on genetic variants found in the androgen receptor gene located on the X chromosome. We hypothesized that men with AGA would be more prone to severe COVID-19 disease. We conducted a preliminary observational study of hospitalized COVID-19 patients at two Spanish tertiary hospitals between March 23-April 6, 2020 to test this theory. In total, 41 Caucasian males admitted to the hospitals with a diagnosis of bilateral SARS-CoV-2 pneumonia were analyzed. The mean age of patients was 58 years (range 23-79). Among them, 29 (71%) were diagnosed with AGA (16 (39%) were classified as severe AGA (Hamilton IV or above)) and 12 (29%) did not present clinical signs of AGA. The diagnosis of AGA was performed clinically by a dermatologist. The precise prevalence of AGA among otherwise healthy Spanish Caucasian males is unknown; however, based on published literature, the expected prevalence of a similar age-matched Caucasian population is approximately 31-53%. Further, according to the European Center for Disease Control and Prevention (https://www.ecdc.europa.eu/sites/default/files/documents/covid-19-rapid-risk-assessment-coro navirus-disease-2019-eighth-update-8-april-2020.pdf): "Of the confirmed cases in China, 3.8% (1 716/44 672) were healthcare workers. Of those, 14.8% were severely or critically ill and 5% of the severe cases died. Latest figures reported from Italy show that 9% of COVID-19 cases are healthcare workers, with Lombardy region reporting up to 20% of cases in healthcare workers. In Spain, the latest COVID-19 situation overview from the Ministry of Health reports that 26% of COVID-19 cases are in healthcare workers. In a Dutch study, healthcare workers were tested voluntarily for COVID-19 and 6% tested positive. In a report on 30 cases in healthcare workers in China, all cases had a history of direct contact (distance within 1 metre) with COVID-19 patients, with an average number of 12 contacts, and the average cumulative contact time being two hours (1.5, 2.7). In the Dutch study, only 3% of the healthcare workers reported being exposed to hospital patients with COVID-19 prior onset of symptoms and 63% had worked while asymptomatic. Based on the scientific rationale combined with this preliminary observation, we propose to test an anti-androgen as a treatment for patients recently diagnosed with COVID-19. This study is intended to explore the possible protective role of anti-androgens in SARS-CoV-2 infection, including reduction of virological duration and disease severity.
The purpose of this study is to assess the efficacy and safety of Proxalutamide as a treatment for hospitalized COVID-19 male and female patients.
Introduction and Purpose: Compression is a tactile stimulus that can reduce the perception of pain by stimulating tactile skin receptors and the speed of nerve conduction. It is highly associated with cryotherapy and other non-pharmacological physical agents without musculoskeletal pain control. However, there is still a lack of evidence on its possible effects on the modulation of this type of pain. This study will evaluate the effect of compression by elastic bandages, on pain and on the function of belonging with knee osteoarthritis (KO). Methodology: A randomized, blinded controlled clinical trial will be conducted. Individuals with KO (n = 90; both sexes; between 40 and 75 years old), will be allocated into three groups (n = 30 / group): Compression (submitted to compression by elastic bandage on the affected knee, 20 min, in 4 days consecutive); Sham (submitted to the same protocol with elastic bandage, but without compression); and Control (waiting list, without intervention). All will be taken one day before the start and one day after the last intervention. They will also be adopted in the 12th and 24th weeks after the intervention. The main outcome will be the pain intensity (Visual Analogue Scale). The Western Ontario & McMaster Universities Osteoarthritis (WOMAC) physical function questionnaire, physical function tests (step test, sit and stand test in 30s, 40m accelerated walk test), and the perception scale global change (GRC). Data analysis: SPSS 24.0 software will be used for descriptive analysis and performance of Kolmogorov-Smirnov tests, two-way ANOVA and multiple comparison tests. A 95% confidence level and a 5% significance level will be adopted.
The purpose of the study is to assess efficacy, safety and tolerability of treatment with zibotentan and dapagliflozin in combination and dapagliflozin 10 mg as monotherapy in participants with chronic kidney disease (CKD) with estimated glomerular filtration rate (eGFR) ≥ 20 mL/min/1.73 m^2, and urinary albumin to creatinine ratio (UACR) ≥ 150 mg/g and ≤ 5000 mg/g.
Currently, there are few approved treatments for COVID-19, antiretroviral (remdesivir) and corticoids. With about 15% of COVID-19 patients suffering from severe disease health system will be overwhelmed. Treatments approaches to inhibit viral replication (antiretroviral and extended spectrum antiviral drugs), such as Remdesivir and Hydroxychloroquine are being used. In severe cases, by CT scans investigators are able to observe that these patients seem to be dying with fibrosis and lung vasculitis. It is hypothesised that targeting vasculitis and lung inflammation secondary to the viral infection may help patients' survival (reducing mortality) and/or decrease time in mechanical ventilators. It is proposed a 4-arm trial, converted to 2 after interim analysis (60 patients for the initial phase, sample size recalculation after initial analysis and 2 arms beyond). In initial phase, IL-6 indirect inhibitor (colchicine), in first arm; IL-17 inhibitor, an innovative target never tested (at this moment) in COVID-19 severe patients, in second study arm. Both approaches (indirect IL-6 and Il-17) are related to modulation of inflammatory immune response. Finally, in third arm, IL-2 low dose. This cytokine was identified as Treg upregulation. Treg levels decrease in hepatitis C virus (HCV) associated vasculitis and increase in vasculitis resolution. In fourth arm, control group, standard of care. Initially, for the first 60 included patients, the study will comprise 4 arms (15 patients per arm, randomization ratio 1:1:1:1). An interim effectiveness and safety analysis at this point will guide the selection of one single treatment strategy (adaptative study) to be carried on after that, comparatively with the control group. The multi-site trial planned enrollment duration of 4-6 months and for each participant will be approximately 4 weeks. This trial will bring complementary data to the global effort in COVID-19 cases resolution.
This Phase III study will assess whether AZD7442 (a combination of 2 mAbs) can safely treat outpatient adults with COVID-19 and prevent either severe COVID-19 or death.
Holter monitoring is one of the most widely used diagnostic methods to detect cardiac arrhythmias. Newer Holter monitors may provide some advantages over the more traditional ones. This study will compare the findings of a Holter exam using an innovative 3-lead wireless water resistant device with a conventional device.
Multiple myeloma (MM) is a rare cancer caused by abnormal survival of plasma cells (blood cells). Most trial participants with MM relapse (cancer has come back) or become non- responsive to treatment and remission gets shorter after each line of treatment. This is a study to assess t(11;14) and BCL2 expression in adult participants with newly diagnosed and relapsed/refractory (R/R) MM. Approximately 500 adult participants with newly confirmed or relapsed/refractory (R/R) multiple myeloma (MM) will be enrolled in around 15-20 countries. Participants will receive standard of care while participating in this study. No drug will be administered as a part of this study. Participants will attend regular visits during the course of the study at a hospital or clinic and will be asked to provide bone marrow and blood samples.
Analyze the effectiveness of a multimodal circuit exercise program on chronic musculoskeletal pain and disability in older adults.
A single-blind, parallel-group, randomised trial will be conducted in Sao Paulo, Brazil. People with Parkinson's Disease (PD) will be recruited at "Brazil Parkinson Association" (BPA), a non-governmental association of PD care, and randomly allocated in two groups: the Movement Guidance Group (MVG) and NO-MVG Group. Both groups will perform XBOX Kinect training for balance and gait. However, the MVG will receive kinesthetic stimuli manually by the physiotherapist (PT) to improve the participant movements while the NO-MVG Group will not, the presence of the PT will be restrict to only guarantee the participant safety.