View clinical trials related to Cytomegalovirus Infections.
Filter by:The purpose of this study is to see how well transfusions of T-cells work in treating CMV. Tcells are a type of white blood cell that helps protect the body from infection. A transfusion is the process by which blood from one person is transferred to the blood of another. In this case, the T-cells are made from the blood of donors who are immune to CMV. The T-cells are then grown and taught to attack the CMV virus in a lab.
In this study we are trying to understand whether previous infection with a particular virus, namely cytomegalovirus (CMV), influences the ability of the immune system to respond to new infections or vaccinations with age.
Analysis of several characteristics of blood from pregnant women with CMV infection according to maternal-fetal transmission. These include CMV viral load, cytokine profile in response to in-vitro stimulation with CMV peptides, meticulous analysis of anti CMV antibodies, maternal DNA polymorphism and microarray of gene expression.
The purpose of the study is to determine whether ASP0113 (a CMV deoxyribonucleic acid [DNA] vaccine) can be detected in plasma after intramuscular (IM) injections, and to determine whether CMV-seropositive healthy volunteers, CMV-seronegative healthy volunteers, CMV-seronegative dialysis patients mount an immune response to the CMV proteins produced by the vaccine after repeated ASP0113 IM injection.
This is a 12-month single center, randomized, open-label, single center study designed to compare the safety and efficacy of everolimus and very low dose tacrolimus versus enteric-coated sodium mycophenolate and low tacrolimus exposure in de novo kidney transplant recipients. The purpose of this study is to compare safety and efficacy of two immunosuppressive regimens based on low tacrolimus exposure combined to everolimus or to enteric-coated mycophenolate sodium (EC-MPS) in de novo kidney transplant recipients.
The purpose of this study is to evaluate the efficacy of mesenchymal stem cells (MSC) in the treatment of refractory cytomegalovirus (CMV) infection after allogeneic hematopoietic stem cell transplantation (allo-HSCT).
CMV is one of the most important opportunistic infection in transplant recipients. In South Korea, more than 95% of adults reveal sero-positivity for CMV IgG. Until now, sero-positivity for CMV IgG before bone marrow organ transplantation is a laboratory test of choice to stratify the risk of CMV reactivation after solid organ transplantation. Theoretically, CMV-specific cell-mediate immune response before and after bone marrow transplantation will further categorize the patients into high or low risk of CMV development after bone marrow transplantation. The investigators thus evaluate the usefulness of CMV-specific ELISPOT assay in bone marrow transplant candidates to predict the development of CMV infection after transplantation.
The purpose of this study is to determine the sensitivity and specificity of QuantiFeron® and ImmuKnow® in combination for early detection of patients who will develop CMV infection in lung transplant patients with CMV-positive serology (R+) prior to transplant.
Resistance to antivirals is a growing problem in transplantation.that may concerns up to 5% of patients treated for cytomegalovirus (CMV) syndrome or disease in recent per-protocol studies. This prevalence vary with the organ transplanted and the degree of viral replication and immunosuppression. Less data are available to date from real-life cohorts of patients, and there is no systematic survey of resistance in Europe or in the US. Non response to treatment concerns a larger group of patients and can result either from emergence of a resistant strain (virological resistance), from inadequate dosage of antivirals, or a high degree of immunosuppression, with a poor CMV immune response. The respective clinical impact of virological resistance and clinical resistance (of pharmacological or immunological origin) on graft outcome and long-term survival of patients has never been assessed. High viral loads and persistent replication associated to prolonged exposure to antivirals are known to favor the emergence of resistant strains. Though epidemiology of resistant strains, role of multiple infections, impact of various mutations on degree of resistance to antivirals and outcome remains to be further studied. Most studies are per-protocol studies or short-term studies conducted on limited populations. There are no data in real-life of transplanted patients at the era of enlarged prophylaxis except those from the French survey for cytomegalovirus resistance cohort opened at the end of 2006. From the first data collected on 346 patients we shown a 10,6% prevalence of non-response to therapy with 5,2% of virological resistance (6,1% incidence at one year on 214 patients) with a trend to poorer outcome in case of virological resistance and to the absence of impact of prophylaxis versus preemptive therapy, though larger populations and prolonged follow-up are requested to fulfill all objectives. We therefore aim to constitute a prolonged survey cohort for CMV resistance with a large number of patients and a prolonged follow-up, to gather data on resistance to antivirals in real-life of transplant patients in an organized data bank, This cohort is in the continuum of our previous cohort started in 2006, granted by the Hospital Clinical Research Program Interregional (PHRC), with the same major objectives and prolonged follow-up of patients.
Cytomegalovirus (CMV) infection was observed in over 30% of organ recipients with high morbidity. Moreover, no prophylaxis, 75% R + D-transplanted, 55%, R + D + and D-25% R + develop CMV. The number of available antiviral drugs is reduced and noticeable side effects (neutropenia, renal toxicity) lead to premature discontinuation of therapy or the use of reduced doses that promote non-response to treatment and the emergence of resistance. In case of neutropenia, there are more an increased risk of secondary rejection due to the reduction of immunosuppressive treatment rendered necessary by the haematological reached. Rational use of these molecules is necessary with essential today as the optimal duration of prophylaxis primary issues and the prophylaxis of recurrences in case of CMV infection reported in.