There are about 3194 clinical studies being (or have been) conducted in Portugal. 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.
Researchers are looking for a better way to treat people who have macular edema secondary to retinal vein occlusion (RVO). In people with RVO, a blood vessel that carries blood away from the retina (vein) becomes blocked. The retina is the very back part of the eye. The blocked vein causes fluid and blood to leak into the retina and thereby causes a swelling of the macula (the center of the retina responsible for fine vision). This swelling is called macular edema. When a vein in the retina is blocked, the levels of a protein called vascular endothelial growth factor (VEGF) rises. VEGF helps the growth of new blood vessels. This can lead to macular edema and may cause the vision to become blurry. The study treatment intravitreal (IVT) aflibercept is given as an injection into the eye. It works by blocking VEGF and this can help repair vision problems related to RVO. IVT aflibercept is already available and is prescribed by doctors as the standard of care treatment for macula edema secondary to RVO. Standard of care is a treatment that medical experts consider most appropriate for a disease. Standard of care is given every 4 weeks in people with macula edema secondary to RVO. While repeated injections of aflibercept may prevent worsening of vision, it may place a burden on the patient. However, a higher amount (8 mg) compared to the standard of care (2 mg) of IVT aflibercept is being tested in studies. This higher amount could be given less often. The amount of IVT aflibercept given is measured in milligrams, also known as mg. The main purpose of this study is to learn how well a higher amount of the study treatment aflibercept works in people with macular edema secondary to RVO. To answer this, researchers will measure changes in vision called best corrected visual acuity (BCVA) in the study participants between study start and after 36 weeks of treatment. Changes will then be compared between those participants who received the higher amount of IVT aflibercept and those that received standard of care. To learn how safe the study treatment is in the participants, the researchers will count the number of participants from study start and up to 64 weeks later that have: - adverse events - serious adverse events "Adverse events" are any medical problems that the participants have during a study. Doctors keep track of all adverse events that happen in studies, even if they do not think they might be related to the study treatments. An adverse event is considered "serious" when it leads to death, puts the participants' lives at risk, requires hospitalization, causes disability, causes a baby being born with medical problems or is otherwise medically important. Dependent on the treatment group, the participants will either receive the higher amount of aflibercept or standard of care as an intravitreal injection for up to 60 weeks. The study will consist of a test (screening) phase, a treatment phase and an end of study phase. Each participant will be in the study for up to 64 weeks. One visit to the study site is planned during the screening phase, followed by visits approximately every 4 weeks (16 in total) during treatment and one visit at the end of the study. During the study, the study doctors and their team will: - check patients' eye health using various eye examination techniques - measure patients' eye vision (BCVA) - take blood and urine samples - do physical examinations - check vital signs - examine heart health using electrocardiogram (ECG) - do pregnancy tests in women of childbearing age In addition, participants will be asked to fill a questionnaire on vision-related quality of life.
Prospective, descriptive study to assess latent tuberculosis infection (LTBI) among healthcare worker (HCW) in a tertiary hospital in a low-risk area.
This study is open to adults aged 18 years and older with bronchiectasis. People can join the study if they were previously enrolled in another study with BI 1291583 (1397-0012: Airleafᵀᴹ). The purpose of this study is to find out whether a medicine called BI 1291583 helps people with bronchiectasis, an inflammatory lung condition. The investigators also want to know how well people with this condition can tolerate BI 1291583 in the long term. Participants take a low, medium, or high dose of BI 1291583 as a tablet once a day for up to 1 year. Participants who were taking placebo in the Airleafᵀᴹ study are put into the BI 1291583 dosage groups randomly, which means by chance. Placebo tablets look like BI 1291583 but do not contain any medicine. Participants who were taking BI 1291583 in the Airleafᵀᴹ study continue to take the same dose. Participants visit the study site 9 times and get 4 phone calls from the site staff. During the visits, the doctors collect information on any health problems of the participants. The doctors also check whether BI 1291583 helps reduce the symptoms of bronchiectasis.
Primary objective: To assess the potential effect of oral Clarithromycin on the single-dose pharmacokinetics of Givinostat. Secondary objective: To assess the safety and tolerability of concomitant administration of Givinostat plus Clarithromycin.
Systemic Lupus Erythematosus (SLE) is an immune-mediated disease associated with inflammation of multiple organ systems. This study will assess how safe and effective upadacitinib is in treating adult participants with moderately to severely active SLE. Adverse events and change in the disease activity will be assessed. Upadacitinib is an approved drug for rheumatoid arthritis, psoriatic arthritis, and axial spondylarthritis and is being developed for the treatment of SLE. This study is "double-blinded", which means that neither the trial participants nor the study doctors will know who will be given upadacitinib and who will be given placebo (does not contain treatment drug) . This study comprised of 3 sub studies. In Study 1 and Study 2, study doctors put the participants in 1 of the 2 groups, called treatment arms. Each group receives a different treatment. There is a 1 in 2 chance that participants will be assigned to placebo. Eligible participants from Study 1 and Study 2 will enter Study 3 at week 52 to receive specific doses of upadacitinib based on their disease activity and their original treatment assignment in Study 1 or 2. Approximately 500 participants diagnosed with SLE will be enrolled in each of the Study 1 and Study 2 in approximately 320 sites across the world. Participants will receive oral tablets of upadacitinib or matching placebo once daily for 52 weeks in Study 1 and Study 2. Eligible participants from Study 1 and Study 2 will receive oral tablets of upadacitinib once daily for 52 weeks in Study 3. 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, checking for side effects and completing questionnaires.
Low Back Pain is a common heath condition with high rates of recurrence and huge associated costs. Research has focused its efforts on analysing the effects of interventions while knowledge about effective secondary prevention strategies is limited. MyBack study aims to analyse the effectiveness of a tailored exercise and behavioural change program (MyBack program) in the secondary prevention of low back pain, and evaluate acceptability, feasibility and determinants of implementation by the different stakeholders, as well as the implementation strategy of the MyBack program, through a hybrid type I, randomized, controlled and multicentre study of effectiveness and implementation in the context of primary health care.
The "cLabel+ Innovative natural, nutritious and consumer-oriented clean label food" is a research and technological development project centered on responding to the challenges facing the food industry. It is focused on the concept of "clean label", which emerges as one of the major current trends in the sector, given the growing number of consumers who are increasingly aware and eager for information, who are looking for alternative, more transparent and natural food products. Thus, one of the aims of the cLabel+ project is to research the macronutrients and phenolic compounds present in food matrices and achieve a clean label positioning for the final products developed. This single group assignment clinical trial aims to evaluate the effect of daily consumption of a fruit juice, developed as part of the collaborative project cLabel+, on gut microbiota composition and diversity in healthy adults. It is also intended to study the acute metabolic effect, namely in terms of appetite control, and lipid and glucose metabolism.
The goal of this clinical study is to see if sacituzumab govitecan-hziy (SG) can improve life spans of people with HR+/HER2- metastatic breast cancer and their tumor does not grow or spread when compared to currently available standard treatments, such as paclitaxel, nab-paclitaxel or capecitabine. The primary objective is to compare the effect of SG relative to the treatment of physician's choice (TPC) on progression-free survival (PFS).
This study is to evaluate the efficacy and safety of PLS240 in patients with hemodialysis-dependent end stage kidney disease (ESKD) and secondary hyperparathyroidism (SHPT). The study consists of two phases. First, a placebo-controlled, double-blind phase where patients will be randomly assigned to either receive dose-titrated PLS240 or matching placebo for 27 weeks. After the completion of the double-blind phase, patients will be eligible to enroll in the open-label extension phase, where they will receive dose-titrated PLS240 for an additional 26 weeks. Throughout the duration of the study, patients will be expected to attend multiple study visits where an investigator will collect blood, preform electrocardiograms (ECGs) and physical exams, and further assess the safety and efficacy of PLS240.
A Study to evaluate the PK, PD, efficacy, and safety of Anifrolumab in children with moderate to severe active SLE