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.
This multicenter randomized placebo controlled trial aims to determine if in patients with COPD not qualifying for LTOT but presenting significant nocturnal arterial oxygen desaturation, whether nocturnal oxygen therapy provided for a period of 4 years decreases mortality or delay the prescription of LTOT.
This parallel, randomized, open-label, multi-centre study will evaluate the effect on overall survival of trastuzumab (Herceptin) in combination with a chemotherapy compared to the chemotherapy alone in patients with HER2-positive advanced gastric cancer. Trastuzumab (Herceptin) will be administered as intravenous infusion of 6 mg/kg (loading dose 8 mg/kg) every 3 weeks. The chemotherapy consists of a combination of 6 cycles of fluorouracil (800 mg/m2/day intravenous infusion every 3 weeks) and cisplatin (80 mg/m2 intravenous infusion every 3 weeks), or capecitabine (Xeloda, 1000 mg/m2 po twice daily for 14 days every 3 weeks) and cisplatin (80 mg/m2 intravenous infusion every 3 weeks). Treatment with trastuzumab (Herceptin) will continue until disease progression. The target sample size is 300-600 patients.
The study will evaluate the efficacy and safety of LCZ696 compared to enalapril on morbidity and mortality in patients with chronic heart failure (NYHA Class II - IV and EF =< 35%).
This randomized, double-blind, placebo-controlled study will use Magnetic Resonance Imaging (MRI) to assess the efficacy of tocilizumab plus non-biological DMARD in patients with moderate to severe rheumatoid arthritis who have had an inadequate response to non-biological DMARDS. Patients will be randomized to receive either intravenous tocilizumab at 8mg/kg (minimal dose 480mg, maximum dose 800mg) or placebo every 4 weeks, in addition to their stable dose of non-biological DMARD. Anticipated time on study treatment is 24 weeks, and target sample size is <100.
The purpose of this study is to investigate whether lenalidomide would reduce the number of red blood cell transfusions (RBC) needed in anemic (RBC transfusion-dependent) participants with low or intermediate-1 risk MDS without a deletion 5q chromosome abnormality. The study also investigated the safety of lenalidomide use in these participants. Two-thirds of the participants received oral lenalidomide and one-third of the participants received oral placebo.
This study provided/continued to provide oral treprostinil (UT-15C SR; treprostinil diethanolamine) to eligible subjects who participated in Studies TDE-PH-202, TDE-PH-203, TDE-PH-205, TDE-PH-301, TDE-PH-302, and TDE-PH-308. The study assessed the long term safety of oral treprostinil and the effect of continued treatment with oral treprostinil on exercise capacity after 1 year of treatment.
The purpose of the study is to collect information regarding the safety of dapoxetine hydrochloride when used in clinical practice to treat men with premature ejaculation. Dapoxetine hydrochloride is a selective inhibitor of serotonin reuptake that is indicated for the treatment of patients with premature ejaculation.
A study to evaluate the efficacy of lenalidomide as maintenance therapy after completion of first-line combination chemotherapy in patients with mantle cell lymphoma (MCL) who are not candidates for transplantation and have achieved partial response (PR) or complete response (CR). This study was prematurely terminated by the sponsor in light of new unpublished data that rendered the current design of the study no longer clinically relevant. A study design with the control arm of no active treatment was no longer appropriate. The termination of the trial was not based on any safety concerns in the study.
The purpose of the study is to assess the responder rate as defined by the achievement of the primary goal from the Goal Attainment Scale following one BoNT-A injection cycle in accordance with routine practices.
Kuvan® is a synthetic copy of a body's own substance called tetrahydrobiopterin (BH4). BH4 is required by the body to use an amino acid called phenylalanine in order to build another substance called tyrosine. Kuvan® received marketed authorisation in Europe in December 2008 and is now available in several European countries for the treatment of Hyperphenylalaninemia (HPA). The primary objective is to assess the long-term safety in subjects treated with Kuvan®. Secondary objectives are to provide additional information regarding: - Safety in specific subject groups (elderly, pediatric, pregnant women and subjects with renal or hepatic insufficiency). - Growth and neurocognitive outcomes for subjects with hyperphenylalaninemia (HPA) who are receiving treatment with Kuvan®. - Progress and outcome of pregnancy for women with HPA who become pregnant while receiving treatment with Kuvan® (these women will be enrolled in a dedicated sub-registry). - Assessment of adherence to diet and to Kuvan®. - Assessment of long-term sensitivity to Kuvan®treatment.