Active clinical trials for "Immunologic Deficiency Syndromes"

Background: - People with primary immune deficiency diseases (PIDD) have weak immune systems. This makes it hard for their bodies to fight infection. The Immune Deficiency Foundation has a network to collect data about people with PIDD. It is called the United States Immunodeficiency Network. It will help doctors and scientists better understand these disorders. The goal is to get medical data for everyone with these disorders in the U.S. and Canada. Data will be stored in a registry. Researchers can use it to study if these disorders are increasing. They can also learn how the disorders are diagnosed and treated. Objectives: - To collect data on people with primary immune deficiency disorders. Eligibility: - People who have a PIDD. Design: Data can be added with no record of personal identity. Data can be added with identity kept separate. This data will be linked to the registry by a code number. Data for the registry includes: Family history Disease treatment Disease characteristics Medical history Laboratory data

Patients with Common variable immunodeficiency (CVID) have various forms of autoimmune and auto inflammatory disorders. The study will investigate if intervention with Rifaximin modifies the gut microbiota with a subsequent alteration in markers of systemic immune activation and inflammation in patients with CVID. The investigators hypothesize that the gut microbiota of CVID patients, at least partly through interaction with the innate immune system within the intestine, contribute to a low-grade systemic inflammation in these patients, and that an intervention with the non-absorbable antibiotic Rifaximin attenuates systemic inflammation through modulation of the gut microbiota. The study may lead to increased understanding of the interaction between microbiota and the immune system. The study could give new insight into important disease processes in relation to the interaction between the microbiota, the intestine and the systemic compartment, and potentially be the basis of new therapeutic strategies in these patients to prevent and down-regulate the auto-inflammatory and autoimmune complications seen in CVID. The findings could also be of relevance for other disorders where the interaction between microbiota and intestinal and systemic inflammation is involved such as various cardiovascular and metabolic disorders. The investigators hypothesize that the gut microbiota of CVID patients, at least partly through interaction with the innate immune system within the intestine, contribute to a low-grade systemic inflammation in these patients, and that an intervention with the non-absorbable antibiotic Rifaximin attenuates systemic inflammation through modulation of the gut microbiota.

The purpose of the proposed study is to acquire additional data (including the assessment of anti-rHuPH20 antibodies) on the long-term safety of HYQVIA and to assess the prescribed treatment regimens and treatment administration in routine clinical practice.

Although combined antiretroviral therapy (cART) has dramatically improved quality of life and lifespan of HIV infected individuals, it still fails to eliminate viral reservoirs. The Gut Associated Lymphoid Tissue (GALT) is the largest reservoir of HIV-1, as it harbors most of HIV target cells as activated memory Cluster of differentiation (CD)4+/CCR5+ T cells. Intestinal T and B cells express α4β7 integrin, a gut mucosal homing receptor which binds to gp120 HIV-1 envelope facilitating the infection of intestinal T cells and the early establishment of the gut HIV reservoir. Intensive viral replication in the GALT leads to an early impairment of mucosal immunity, due to the severe CD4+ T cells depletion, that could be also explained by a lack of recruitment in the gut. Among T cells, interleukin-(IL-)17 secreting CD4+ T cells (Th17) are particularly depleted during HIV infection. This depletion could be associated with HIV progression since these cells play a crucial role in the maintenance of mucosal immunity. A dysbalance of the Th17/Treg ratio may reflect the loss of the intestinal epithelial barrier integrity. These damages are responsible for an increase in microbial translocation, which is associated with immune activation and progression to AIDS. Several recent studies have shown that cART initiation during acute or early HIV-1 infection reduces HIV DNA reservoir size and improves immune reconstitution in blood. Post-treatment controllers, who started long-term cART early after HIV infection, have very low levels of HIV DNA in peripheral blood mononuclear cells, similarly to elite controllers. Unlike most HIV-infected individuals, they maintain an undetectable plasmatic viral load after several years of cART interruption, suggesting that a weak reservoir is a prerequisite to achieve a functional cure. By extrapolation, it could be hypothesized that the gut viral reservoir is also decreased and that mucosal immunity is restored when cART is initiated during primary phase of infection. The gut viral reservoir begins to form within the first days after HIV exposure, and grows during acute HIV infection. Similarly, intestinal T cells are depleted very early after infection, due to high viral replication, host immune response and bystander effects. Most studies also concluded that long-term and optimal treatment can't fully restore mucosal immunity. These observations led us to study the impact of time of cART start on the size of viral reservoir and on immune reconstitution in the gut. For this, we analyzed the virological and immunological characteristics of the rectal HIV reservoir of long-term treated patients regarding their blood CD4+ T cells count at the time of cART initiation.

The purpose of this study is to analyse the phenotype in a sub-population of adults with severe primary immunodeficiency with lymphoproliferation and neutropenia and to decipher the possible pathways involved, especially under the hypothesis of a CTLA4/LRBA schema

This non-interventional, post-marketing observational study was conducted to obtain safety data from the use of lopinavir/ritonavir (Kaletra), in clinical practice, in pregnant women and their children in Japan.

Through a prospective observational cohort study enrolling patients newly diagnosed with Human immunodeficiency virus (HIV): Aim 1: Assess attitudes and beliefs about HIV disease and care over time and relate those attitudes and beliefs to success in following the Steps of HIV Care. Aim 2: Validate a simple visual analogue scale for assessing adherence to highly active antiretroviral therapy (HAART) in patients newly starting HAART in routine care. Aim 3: Implement latent growth curve analysis for modeling changes in attitudes and beliefs over time, and for assessing the impact of the components of the Steps of HIV Care model on health outcomes.

This study is a cross sectional observational study to evaluate the prevalence of HLA-B*5701 in the major French ethnotypes. Any HIV-1 infected subject will be eligible for this study including antiretroviral therapy (ART) naÃ-ve and experienced subjects irrespective of abacavir use, as well as subjects previously tested for HLA-B*5701. Subjects will be approached during a standard clinic visit, and all subjects will be consented prior to any study specific procedure. Subjects will be asked to provide a tissue sample (cheek cells and blood sample) which will be used to assess HLA-B*5701 status by central and local methodologies.

To define the incidence and prevalence of AIDS-associated cardiomyopathy. Also, to conduct immunopathology and serologic studies in endomyocardial biopsies and autopsy tissues.

To develop natural history data regarding the incidence, clinical course, prognosis, and effects of treatment with anti-viral and immunosuppressive agents on HIV-associated heart disease. A second part of the study evaluated a number of possible mechanisms underlying the development of HIV heart disease.