There are about 4372 clinical studies being (or have been) conducted in Greece. 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.
In the PLATO substudy referring to patients presenting with an ST-elevation Myocardial Infarction(STEMI), out of the 4201 who received ticagrelor, 1326 had been pre-treated with a 600mg clopidogrel loading dose (LD) within 24 hours prior to randomization. It is a logical assumption, that patients who are being reloaded with ticagrelor will demonstrate reduced platelet reactivity (PR) at 24 hours, in comparison to those who were initially loaded with ticagrelor, due to the synergistic antiplatelet effect. Single loading with ticagrelor though, will possibly be accompanied by a smaller bleeding potency compared to reloading with ticagrelor. Therefore, we assume that single loading with ticagrelor is non-inferior to reloading with ticagrelor, in terms of platelet reactivity. P2Y12 inhibitor naive patients with STEMI, they will be randomized immediately after coronary angiography (Hour 0) in receiving either Ticagrelor 180mg LD or Clopidogrel 600mg LD and 2 hours later reloading with Ticagrelor 180mg, after written informed consent. PR will be measured, using the VerifyNow assay at randomization (Hour 0) and at 2, 4, 6 and 24 hours post randomization. In addition, a 12-lead ECG will be performed before randomization, 90 and 180 minutes after the first balloon inflation, as well as on the exit day. Troponin I and CK-MB will be assessed at randomization and at hour 4, 12, 24, 48 and 72 after randomization. Non inferiority of Ticagrelor LD versus Ticagrelor re-LD would be accepted if the upper bound of the 2-sided 95% CI around the estimated LS mean difference (Ticagrelor LD minus Ticagrelor re-LD) in the primary end point (PR at 24 hours) would lie bellow Δ=35 PRU. This non-inferiority margin (Δ) represents the upper bound of the LS mean difference in PR between Ticagrelor and Prasugrel arm at 24 hours after LD in a pharmacodynamic study of 55 STEMI patients. Considering previous studies PR at 24 hours post randomization was estimated at 47±40 PRU and 41±35 PRU for Ticagrelor only LD and Ticagrelor re-LD group respectively. To obtain 85% statistical power with a 2-sided alpha=0.05, approximately 32 patients in each treatment group (64 in total) would be needed to establish the primary hypothesis using the abovementioned non-inferiority margin of 35 PRU. Anticipating a 5% dropout rate, enrollment was set to at least 68 patients. The primary endpoint, as well as PR at all the other time points of the study will be analyzed separately via a mixed effect model with treatment as fixed effect, patient as a random intercept and PR at baseline as a covariate. Least squares estimates of the mean difference will be presented, with 95% confidence intervals and a two-sided p-value for the treatment effect. P values for secondary endpoints will be reported for two-tailed tests of superiority.
Ιt has been suggested that the accumulation of androgens in the micro milieu of the primate ovary, plays a critical role in early follicular development and granulosa cell proliferation. Increased intraovarian concentration of androgens seems to augment follicle stimulating hormone (FSH) receptor expression in granulosa cells and thus, potentially leading to enhanced responsiveness of ovaries to FSH. In addition, androgen excess has been shown to stimulate early stages of follicular growth and increase the number of pre-antral and antral follicles. On the basis of these data, it has been hypothesized that increasing androgen concentration in the ovarian micro milieu in poorly responding patients might lead to an increase in the number and the maturity of oocytes after ovarian stimulation for IVF. Hence, recent efforts have been focused on the potential benefit of androgen administration in the probability of pregnancy in poor responders undergoing ovarian stimulation for IVF. Pretreatment with transdermal testosterone has been suggested as a safe and effective way of increasing the intraovarian androgen concentration. Recently, published, randomized control trials (RCTs) have evaluated transdermal testosterone in poor responders undergoing ovarian stimulation for IVF, with inconclusive results. In view of the conflicting or inconclusive data regarding the efficacy of the proposed intervention, this study will attempt to explore the role of transdermal testosterone pretreatment in poor responders undergoing IVF through a properly designed RCT. The lack of a universal definition of poor responders has been identified previously and recently, in an attempt to address this issue, universal criteria for the definition of poor ovarian response have been proposed following a consensus meeting in Bologna. In the present study, the Bologna criteria will be used on the contrary to previous studies. Despite the advancement in assisted reproduction technologies, poor ovarian response (POR) is still considered to be one of the most challenging tasks in reproductive medicine. Poor ovarian response is considered to be an inadequate response to ovarian stimulation, defined usually by a low number of oocytes retrieved or a low number of developing follicles in a previous or in the running, respectively, in vitro fertilization (IVF) cycle. Given the severely diminished probability of pregnancy after IVF in these patients, the identification of an indisputably efficacious treatment, such as testosterone pretreatment, would be a promising alternative for poor responders undergoing IVF.
This trial is conducted globally. The aim of this trial is to compare cardiovascular safety of insulin degludec versus insulin glargine in subjects with type 2 diabetes at high risk of cardiovascular events.
Ticagrelor administration, whose molecule resembles to adenosine, led to reduction in overall mortality and thrombotic cardiovascular (CV) events when directly compared to clopidogrel in the PLATO trial, implicating possible pleiotropic actions for the drug. It has been shown that ticagrelor increases adenosine concentration, by interfering with its red blood cells' uptake and by inducing the release of ATP which is then converted to adenosine. Recent studies in healthy volunteers and patients with coronary artery disease (CAD) have shown that ticagrelor increases the coronary blood flow in response to intravenous adenosine administration. Ticagrelor administration, in comparison with other P2Y12 inhibitors, may influence the endothelial function, as assessed by the Peripheral Arterial Tonometry method (EndoPAT 2000 system (Itamar Medical, Caesarea, Israel), which is a method for evaluating endothelial dysfunction and has been found to positively correlate with flow mediated dilatation (FMD). This is prospective, randomized study with a crossover design, which will be conducted in patients with CAD under prasugrel maintenance dose (MD) 10mg once a day for at least a 3-month period. At Day 0 (day of randomization) eligible patients will be assigned to either: - Ticagrelor 90mg twice a day for the next 15 days or - Prasugrel 10mg once a day for the next 15 days At Day 0 (before treatment onset)patients wiil be subjected to a baseline peripheral arterial tonometry measurement. Measurement will be repeated at Day 15 and then treatment crossover will be performed for the next 15 days (without an intervening washout period). At Day 30 patients will be subjected again to peripheral arterial tonometry assessment. Peripheral blood sample will be taken from the patients in Day 0 for genotyping control.
Ticagrelor administration, whose molecule resembles to adenosine, led to reduction in overall mortality and thrombotic cardiovascular (CV) events when directly compared to clopidogrel in the PLATO trial, implicating possible pleiotropic actions for the drug. It has been shown that ticagrelor increases adenosine concentration, by interfering with its red blood cells' uptake and by inducing the release of ATP which is then converted to adenosine. Recent studies in healthy volunteers and patients with coronary artery disease (CAD) have shown that ticagrelor increases the coronary blood flow in response to intravenous adenosine administration. Ticagrelor administration, in comparison with other P2Y12 inhibitors, may influence the endothelial function, as assessed by the Peripheral Arterial Tonometry method (EndoPAT 2000 system (Itamar Medical, Caesarea, Israel), which is a method for evaluating endothelial dysfunction and has been found to positively correlate with flow mediated dilatation (FMD). This is a prospective, observational study, which will be conducted in patients with coronary artery disease subjected to percutaneous coronary intervention (PCI) under ticagrelor maintenance dose (MD) 90mg x 2, who are about to stop treatment, due to completion of 1 year antiplatelet therapy. Eligible patients will be subjected to peripheral arterial tonometry at Day 0 (immediately after receiving the last pill of ticagrelor) and at day 2 and day 5 post study drug discontinuation. Peripheral blood sample will be taken from the patients at Day 0 for genotype analysis.
The objective of this study was to provide continued treatment with eltrombopag for subjects who were participating in a Novartis-sponsored investigational study with eltrombopag (parent studies 114968/ASPIRE (NCT01440374), PMA112509 (NCT00903422), and TRA105325/EXTEND (NCT00351468), receiving clinical benefit without unacceptable toxicity and to collect long-term safety data.
This trial is conducted globally. The aim of the trial is to compare the efficacy and safety of insulin degludec/liraglutide versus insulin glargine in subjects with type 2 diabetes mellitus.
An open-label, non randomized clinical trial of Tarceva as single agent in progressed non-small cell lung cancer patients.
Objective of the study is to find the optimal dose of the once daily oral soluble guanylate cyclase stimulator (sGC) BAY1021189 for Phase III that can be given in addition to standard diuretic and comorbidity treatment for heart failure with preserved ejection fraction (HFpEF)
Objective of the study is to find the optimal dose of the once daily oral soluble guanylate cyclase stimulator (sGC) BAY1021189 for Phase III that can be given in addition to standard therapy for heart failure with reduced ejection fraction (HFrEF).