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Immunodeficiency with hyperimmunoglobulin M is a rare disorder characterized by recurrent infections, low or absent IgG, IgE, and IgA levels, and normal or elevated levels of IgM and IgD. [ 2 ] : 84
IgM nephropathy or immunoglobulin M nephropathy (IgMN) is a kind of idiopathic glomerulonephritis that is marked by IgM diffuse deposits in the glomerular mesangium. [1] IgM nephropathy was initially documented in 1978 by two separate teams of researchers.
Patients diagnosed with isolated primary immunoglobulin M deficiency frequently exhibit recurrent infections with common microorganisms as well as a higher incidence of autoimmune and allergy disorders. More than 80% of patients with isolated primary immunoglobulin M deficiency have recurrent infections as their presenting symptom.
Hyper IgM syndrome is a rare primary immune deficiency disorders characterized by low or absent levels of serum IgG, IgA, IgE and normal or increased levels of serum IgM. [ 8 ] They are resulting from mutations in the pathway from B-cell activation to isotype class switching.
Immunoglobulin M (IgM) is the largest of several isotypes of antibodies (also known as immunoglobulin) that are produced by vertebrates. IgM is the first antibody to appear in the response to initial exposure to an antigen ; [ 1 ] [ 2 ] causing it to also be called an acute phase antibody.
Immunoglobulin (Ig) class switch recombination deficiencies are characterized by elevated serum IgM levels and a considerable deficiency in Immunoglobulins G (IgG), A (IgA) and E (IgE). As a consequence, people with HIGM have an increased susceptibility to infections. [9] [7] [10]
Common variable immunodeficiency (CVID) is an inborn immune disorder characterized by recurrent infections and low antibody levels, specifically in immunoglobulin (Ig) types IgG, IgM, and IgA. [2] Symptoms generally include high susceptibility to pathogens, chronic lung disease , as well as inflammation and infection of the gastrointestinal tract.
ICD-10 is the 10th revision of the International Classification of Diseases (ICD), a medical classification list by the World Health Organization (WHO). It contains codes for diseases, signs and symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or diseases. [1]