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Hyper-IgM syndrome type 2
Hyper-IgM syndrome type 2 (HIGM2) is a rare immunodeficiency characterized by normal or elevated serum IgM levels with absence of IgG, IgA, and IgE, resulting in a profound susceptibility to bacterial infections. For a discussion of genetic heterogeneity of immunodeficiency with hyper-IgM, see HIGM1 (308230). [from OMIM]
Immunodeficiency, common variable, 6
Any common variable immunodeficiency in which the cause of the disease is a mutation in the CD81 gene. [from MONDO]
Severe combined immunodeficiency due to CORO1A deficiency
Immunodeficiency-8 with lymphoproliferation (IMD8) is an autosomal recessive primary immunodeficiency characterized by early-childhood onset of recurrent infections and lymphoproliferative disorders, often associated with EBV infection. Laboratory studies show defects in the numbers and function of certain lymphocyte subsets, particularly T cells (Moshous et al., 2013; Stray-Pedersen et al., 2014). [from OMIM]
Immunodeficiency 25
Any severe combined immunodeficiency in which the cause of the disease is a mutation in the CD247 gene. [from MONDO]
Combined immunodeficiency due to MALT1 deficiency
Combined immunodeficiency due to MALT1 deficiency is a rare, genetic form of primary immunodeficiency characterized by growth retardation, early recurrent pulmonary infections leading to bronchiectasis, inflammatory gastrointestinal disease, and other symptoms, such as rash, dermatitis, skin infections. [from ORDO]
Immunodeficiency 62
Immunodeficiency-62 (IMD62) is an autosomal recessive primary immunologic disorder clinically characterized by onset of recurrent upper and lower respiratory infections late in the first decade of life. Patients may also have increased viral susceptibility to varicella zoster virus (VZV) or herpes simplex virus (HSV). Laboratory studies show impaired antibody response to vaccination, low levels of circulating memory B cells, and almost undetectable antibodies. There is also evidence of secondary T-cell dysfunction. The disorder may result from disturbed actin cytoskeleton dynamics causing impaired lymphocyte migration (summary by Bouafia et al., 2019). [from OMIM]
Immunodeficiency 109 with lymphoproliferation
Immunodeficiency-109 with EBV-induced lymphoproliferation (IMD109) is an autosomal recessive primary immune disorder characterized by onset of recurrent sinopulmonary infections in childhood. Affected individuals are susceptible to infection with EBV and develop EBV viremia and EBV-associated lymphoproliferative disease or B-cell lymphoma. Immunologic workup shows normal levels of T, B, and NK cells, with defective CD8+ T cell function after stimulation. Some patients may have hypogammaglobulinemia and poor antibody response to stimulation (Alosaimi et al., 2019). [from OMIM]
Immunodeficiency, common variable, 15
Common variable immunodeficiency-15 (CVID15) is an autosomal dominant immunologic disorder characterized by the onset of severe recurrent infections in infancy or early childhood. Laboratory studies show hypogammaglobulinemia with antibody deficiencies of IgM, IgG, and IgA due to impaired plasma cell homeostasis, although other B cell subset numbers are normal. T and NK cells are also normal. Treatment with IV Ig results in a favorable clinical response to recurrent infections (Schubert et al., 2018). For a general description and a discussion of genetic heterogeneity of common variable immunodeficiency, see CVID1 (607594). [from OMIM]
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