There are about 2700 clinical studies being (or have been) conducted in Bulgaria. 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.
The purpose of this study is to evaluate the efficacy and safety of 3 fixed doses of JNJ-37822681 compared with placebo (an inactive substance that is compared with a drug to test if the drug has a real effect in a clinical trial) after 6 weeks treatment and olanzapine after 12 weeks treatment in participants with schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self).
A randomized, double-blind, clinical trial to assess the safety and efficacy of two doses of oral cladribine versus placebo in participants who had a first clinical demyelinating event (clinically isolated syndrome). Participants in either the cladribine or placebo group may also enter treatment periods with open-label interferon-beta or open-label cladribine depending upon the disease status. The primary objective of this study is to evaluate the effect of two dosage regimens of oral cladribine versus placebo on the time to conversion to multiple sclerosis (MS) (from randomization) according to the Poser criteria in participants with first clinical demyelinating event at high risk of converting to MS.
The primary objective was to compare the efficacy of once daily [q.d] subcutaneous [s.c.] injections of Semuloparin sodium (AVE5026) with q.d. s.c. injections of Enoxaparin for the prevention of Venous Thromboembolic Events [VTE] in patients undergoing hip fracture surgery. The secondary objectives were to evaluate the safety of AVE5026 in patients undergoing hip fracture surgery, and to document AVE5026 exposure in this population.
This open-label, international multi-center extension study WA18695 was designed to assess the long term safety of tocilizumab in patients who had moderate to severe active rheumatoid arthritis (RA). Patients enrolled in the WA18695 study had previously received treatment in the 24-week, placebo-controlled, Phase III Study WA17822. Eligible patients were assigned to treatment with 8 mg/kg tocilizumab every 4 weeks for a maximum of 5 years.
The purpose of this study is to evaluate the benefits and risks of lixisenatide (AVE0010), in comparison to placebo, as an add-on treatment to sulfonylurea without or with metformin, over a period of 24 weeks of treatment, followed by an extension. The primary objective is to assess the effects of lixisenatide when added to sulfonylurea with or without metformin on glycemic control in terms of glycosylated hemoglobin (HbA1c) reduction (absolute change) at Week 24. The secondary objectives are to assess the effects of lixisenatide on percentage of patients reaching HbA1c less than (<) 7 percent (%); percentage of patients reaching HbA1c less than or equal to (<=) 6.5%; body weight; fasting plasma glucose (FPG); beta-cell function assessed by homeostasis model assessment (HOMA) beta; 2-hour postprandial plasma glucose (PPG), glucagon, insulin, proinsulin, and C-peptide after a standardized meal challenge test in a sub-study in all patients in selected centers; to evaluate safety, tolerability, pharmacokinetics (PK) and anti-lixisenatide antibody development.
This study is being carried out to investigate if AZD5672 is effective in treating Rheumatoid Arthritis (RA) and if so how it compares to placebo (a substance which does not have any action) and etanercept (a medicine already available to treat Rheumatoid Arthritis) when added to treatment with methotrexate. The purpose of this study is also to find out which dose of AZD5672 is the most effective at treating RA and to find out how well the body tolerates AZD5672 when taken for up to 12 weeks.
The purpose of the current study is to assess the safety and tolerability of intravenous tonapofylline.
The study is designed to investigate the efficacy, safety and tolerability of SB-742457 versus placebo in subjects with mild-to-moderate Alzheimer's disease. SB-742457 is an experimental treatment which increases the levels of certain chemicals in the brain that are often decreased in patients with Alzheimer's disease.
The purpose of this study is to evaluate efficacy, safety and tolerance of BERIPLEX® P/N (Kcentra) compared with plasma in regard to rapid reversal of coagulopathy induced by coumarin derivatives in subjects who require immediate correction of INR (International Normalized Ratio)and to stop an acute major bleeding.
Until recently, the tuberculin skin test (TST) was the only available diagnostic assay for detection of latent infection with M. tuberculosis (LTBI). Despite the low overall incidence of symptomatic tuberculosis infection in low-prevalence countries, the potential mortality and morbidity mandate constant vigilance to identify patients at risk for reactivation. Due to systemic immunosuppression, immunocompromised patients with latent M. tuberculosis infection are at increased risk of progression to active disease. This applies to patients with various causes of immunodeficiency such as HIV-infected patients, allogeneic stem cell and solid organ transplant recipients, patients with rheumatoid arthritis and patients with chronic renal failure. Therefore, current guidelines aimed at preventing tuberculosis infection in immunocompromized individuals recommend a generalized screening for evidence of latent infection to target appropriate preventative prophylaxis. At present, tuberculosis control programs exclusively rely on the tuberculin skin test to identify a latent infection in asymptomatic individuals. Recently, novel in vitro assays termed T cell interferon-gamma release assay (TIGRA) have become available that are based on the detection of interferon-gamma (IFN-gamma) production in T cells or supernatants after stimulation with highly specific antigens of M. tuberculosis. Two TIGRA are commercially available, the ELISPOT based T.SPOT.TB and the ELISA based QuantiFERON-TB Gold test (now available as an "IN-TUBE" version). The aim of the study is a prospective comparison of the two commercially available approved TIGRA (QuantiFERON-TB Gold In-Tube and T.SPOT.TB) with the established Mendel-Mantoux skin-test in immunocompromized patients (main focus on sensitivity and specificity). The study hypotheses are as follows: 1. In immunocompromised patients, the two commercially available approved TIGRA (QuantiFERON-TB Gold In-Tube and T.SPOT.TB) have increased sensitivity and specificity as compared to the established Mendel-Mantoux skin-test. 2. Results from QuantiFERON-TB Gold In-Tube and T.SPOT.TB do not differ in immunocompromised patients.