There are about 36633 clinical studies being (or have been) conducted in France. 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.
Presurgical evaluation of epileptic patients require a precise mapping of cerebral regions implied in epileptic discharges and in normal function. The current practice in most cases is to implant intracerebral electrodes in order to localize these regions in a reliable manner. However, non-invasive methods have been developed in order to record brain activity with no risk for the patient. Still, it is necessary to validate and improve the signal processing methods and the underlying models these methods in order to optimize their use in clinical practice. To do so, it is necessary to record simultaneously electroencephalogram (EEG) and magnetoencephalogram (MEG) and stereo encephalogram SEEG (intracerebral). Such simultaneous recordings will permit to confront the exact same activity recorded non-invasively at the surface of the head, and represented on the brain thanks to the model and directly within the brain. The objective is to define the conditions under which one can represent faithfully the activity measured intracerebrally from the surface measurements. It will be record simultaneously MEG, scalp EEG and intracerebral EEG on a series of 60 patients. It will be record resting state signals, as well as stimulation protocols. The interictal epileptic discharges will be marked on the different modalities, and evoked potentials/fields computed in response to protocols. Sensitivity of recordings to activity visible on depth recordings will be evaluated as a function of localization of brain generators. Advanced signal processing methods will be used such as source localization and independent component analysis, in order to increase sensitivity of measures.
Quantification and follow-up during 3 years of circulating tumoral DNA in patients with choroidal melanoma
This is a single-center prospective study evaluating the diagnostic performance and safety of Infracyanine in women with early breast cancer whose the research of sentinel node(s) combines isotopes and Infracyanine.
Screening for an abdominal aortic aneurysm, monitoring its growth and evaluation of its risk of rupture are based on the measure of its maximum diameter. The abdominal aortic aneurysm's treatment to prevent its rupture is recommended from a threshold of 50-55 mm in men and of 45-50 mm in women. The importance of this measure for patient management justify a specific and homogeneous protocol of measure. However, the diversity of methods of measuring the maximum diameter with scanner and ultrasound was shown. The impact of various angio-CT based measures of maximum AAA diameter, and the impact of reproducibility limits on the decision to operate have never been investigated.
Anthracycline therapy is well-known for its adverse cardiac effects. Anthracycline-induced cardiotoxicity (AIC) is associated with a poor prognosis; since classical heart failure treatment can potentially reverse cardiac dysfunction at the early stage of cardiac toxicity, early detection of AIC is crucial. Transthoracic echocardiography is recommended for monitoring left ventricular function in patients receiving these molecules. In routine practice, left ventricular systolic function is mainly assessed by the left ventricular ejection fraction (LVEF), measured by two-dimensional echocardiography imaging. However, LVEF depends on the operator's experience and is not sensitive enough to detect subclinical myocardial dysfunction. To overcome these limitations, two-dimensional speckle-tracking imaging has been proposed. This technique allows for a study of global and regional myocardial deformation, especially the longitudinal component, which appears to be the most sensitive one. Several studies have already emphasized the role of global longitudinal strain (GLS) to detect slight alterations in systolic function, especially in the setting of potentially cardiotoxic drugs and even after low to moderate doses of anthracyclines. A recent expert consensus paper strongly recommends GLS assessment for the detection of subclinical left ventricular dysfunction due to anthracycline therapy. Although there is growing evidence that GLS can predict subsequent alterations in LVEF, few data exist on the optimal timing to perform echocardiography. The investigators hypothesized that very early measurement of GLS in the time course of anthracycline therapy could predict subsequent left ventricular systolic dysfunction. The aim of this study was, therefore, to determine whether assessment of GLS after 150 mg/m² of anthracyclines can predict AIC.
The follow up time after keratoplasty now routinely exceeds multiple decades. It is common for keratoplasty patients to also undergo cataract surgery at a later date in their lives. Keratoplasties and cataract surgery both result in local inflammation. This may influence the density of endothelial cells, and on average there is a loss of 10% in endothelial cells within 3 months of the cataract surgery. Yet, a sufficient density of endothelial cells is required to maintain graft transparency. It may be therefore difficult to strike a balance between loss of visual acuity due to the cataract of to the loss of graft transparency over the long term. The investigators aim to compare graft survival in patients with clear crystalline lens with and without cataract surgery.
This a non-interventional retrospective study on the efficiency and the tolerance of intravitreal injections of Aflibercept on vitrectomized eyes in the diabetic macular oedema
In a population of patients suffering from schizophrenia being treated for an episode of clinical destabilization and followed for a period of twelve months, the main objective is to evaluate the proportion of patients achieving functional remission and its relationship to clinical remission.
Background: Patients with schizophrenia are abnormally disturbed by information onsets, which may result in a disadvantage in filtering relevant information. It seems that they accord the same importance to all objects in a scene without taking into account the relevance of objects (cognitive salience) or their emotional charge (salience emotional). The paradigm of change blindness offers the interesting possibility of studying sensitivity to the sudden irruption of visual information with ecological stimuli in schizophrenia. An increased attentional capture by the irruption of visual information would suggest better performance in patients than in healthy controls. Moreover, patients are disturbed to processing of emotional information, in this way we would like to measure the impact of emotional salience on the visual exploration. Main aim: The main objective is to evaluate, if patients with schizophrenia quickly detect changes occurring on irrelevant objects in the understanding of the scene. Secondary objectives: To evaluate in patients with schizophrenia the impact of emotional salience using the same paradigm. To separate an explicit response (motors responses) with an implicit response (eye tracking measures). Methodology: 30 patients with schizophrenia and 30 healthy controls were asked to detect changes in 96 scenes with 0 or 1 change (neutral or emotional changes). We will measure the participants' speed and accuracy in explicitly reporting the changes via motor responses and their capacity to implicitly detect changes via eye movements.
A monocentric pilot studying intestinal organoids from endoscopic biopsies of IBD (Crohn and ulcerative colitis), FAP patients and healthy controls. Investigate the morphological characteristics of organoids, the expression of genes and proteins of the Wnt/APC/beta-catenin pathway within both ISC.