Immunodeficiency with factor H anomaly

A rare, genetic, primary immunodeficiency disease characterized by increased susceptibility to recurrent, usually severe, infections (particularly by <i> Neisseria meningitidis</i>, <i>Escherichia coli</i>, and <i>Haemophilus influenzae</i>), renal impairment and/or autoimmune diseases, typically manifesting with otitis media, bronchitis, meningitis, and/or septicemia, as well as hematuria/proteinuria, asthma, nephrotic syndrome, hemolytic uremic syndrome, glomerulonephritis, and/or systemic lupus erythematosus. Laboratory serum analysis reveals, in addition to factor H deficiency, decreased complement factor B, properdin, complement C3 and terminal complement components.