Active clinical trials for "Primary Immunodeficiency Diseases"

Analysis of DNA samples of patients with molecularly undetermined PID by whole exome/genome sequencing. Transcriptome analysis of patients with molecularly undetermined PID.

Prospective registry study for children and young adults with severe immune cytopenias (persisting/chronic immune thrombocytopenia, autoimmune hemolytic anemia, and Evans syndrome) to improve the management, facilitate the differential diagnostic work-up, and document the clinical course under various treatments. Time points: at inclusion, after 6 months, after 12 months, then yearly up to 4 years after inclusion. No intervention, mere observation and documentation. Guided pre-inclusion (differential) diagnostic work-up.

The investigators will utilize a systematic approach for the diagnostic evaluation of patients to identify characteristics which may distinguish between Primary Immunodeficiency (PID) disorders versus Primary Ciliary Dyskinesia (PCD).

This study will determine the biochemical and genetic causes of inherited immune diseases affecting lymphocyte homeostasis. Lymphocytes are a type of white blood cell that fights infections. Normally, the body keeps a precise balance in which lymphocyte growth is matched by lymphocyte death. People with constantly enlarged lymph nodes or spleen, along with autoimmune disease, immunodeficiency, lymphoma, or other immune problems affecting lymphocytes may have an abnormality of the immune system in the cell growth and cell death processes that regulate lymphocyte homeostasis. Patients who have, or are suspected of having, an inherited lymphocyte homeostasis or programmed cell death susceptibility syndrome may be eligible for this study. Relatives of patients are also included. Participants' (patients and relatives) medical records are reviewed and blood samples are drawn for studies to identify genes involved in immune disorders. Tissues that have been removed from patients for medical reasons, such as biopsied tissues, may be examined for tissue and DNA studies. Relatives are studied to determine if some of them may have a very mild form of lymphocyte homeostasis disorder. Patients who have an immune problem that the researchers wish to study further will be invited to donate additional blood samples at irregular intervals (at least once a year) and to provide an update of their medical records at the same time. ...

Background: Primary immunodeficiency disorders, or PIDs, are diseases that weaken the immune system. This makes it easier for a person to get sick. Some PIDs are mild and may not be diagnosed until later in life. Other kinds are severe and can be identified shortly after birth. Researchers want to learn more about PIDs by comparing data from relatives and healthy volunteers to people with a PID. Objective: To learn more about PIDs, including their genetic causes. Eligibility: People ages 0 75 with a PID or their healthy biological relatives the same ages Healthy volunteers ages 18 75 Design: Participants will be screened with a medical history, physical exam, and HIV blood test. They may have a pregnancy test. Participants may repeat the screening tests. Blood taken at screening will be used for genetic tests and research tests. Participants will be told test results that affect their health. Some blood will be stored for future research. Adult participants with a PID may have a small piece of skin removed. The area will be numbed. A small tool will take a piece of skin about the size of a pencil eraser. Researchers may collect fluid or tissue samples from PID participants regular medical care. They will use them for research tests. Participants with a PID will have 3 follow-up visits over 10 years (for infants, 2 years). Visits will include a physical exam, medical history, and blood draw. Participants with a PID and their relatives will be called once a year for 10 years. They will talk about how they are feeling and if they have developed any new symptoms or illnesses. ...

Background: The immune system helps the body fight infections. Primary immunodeficiency disorders (PIDs) are diseases that make it easier for people to get sick. Many PIDs are inherited. This means parents can pass them on to their children. Knowing what causes a person s PID is important to decide what treatment to give them. Objective: To test samples from people with a PID or people related to someone with a PID to find out what causes PIDs. Eligibility: People ages 99 or younger who have a PID or have a relative with a PID Design: Participants will be screened with a medical history over the phone. They may need to give permission for researchers talk to their doctors about their health. Their relatives may be contacted to see if they want to join the study. Participants will give samples. These could be: Blood: Participants blood will be taken from a vein in an arm, or with a prick on the finger or heel for children. Saliva, urine, or stool: Participants will provide each sample in a special cup. Nose or cheek swab: Participants will rub the skin inside their nose or cheek using a cotton swab. Cord blood: If participants have a baby during the study, blood will be collected from the baby s umbilical cord after it is born. Samples from medical procedures: If, during the study, the participants have a medical procedure that collects samples, the samples may be used for the study.

Severe infections in pediatric intensive care unit are not uncommon. Historically, the diagnosis of hereditary (primary) immune deficiency required a combination of recurrent clinical signs and biological stigmas. This paradigm is currently being questioned, and grows the hypothesis of a potential underlying genetic susceptibility in any severe infection. To date, the proportion of severe infections explained by an underlying immune deficiency is unknown. The aim of this prospective study is to assess the incidence of primary immune deficiencies in children with severe infection, regardless of their etiology.

Primary immunodeficiency is a clinically, immunologically, and genetically heterogeneous group of diseases that occur as a result of quantitative and/or qualitative deficiency of one or more cellular and molecular components belonging to the immune system. This classification, called the International Classification of Functioning, Disability and Health ( ICF), constitutes a common language and perspective for the definition of health and health-related conditions. This study aimed to evaluate the body structure function, activity and participation limitations of adult immunodeficiency patients within the scope of ICF and to compare body structure function, activity and participation limitations and compare with healthy people.

The goal of our study is to assess the cellular immune responses of participants with antibody deficiency disease before and after immunization with SARS-CoV-2 mRNA vaccines.

Primary immunodeficiencies (PID) are a heterogeneous group of diseases that occur as a result of disorders that affect the development, differentiation and/or function of various cells and building blocks in the immune system. Among the symptoms and complications of PID, pulmonary complications are very common and significantly increase the morbidity and mortality of the disease.