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Neutrophil immunodeficiency syndrome
Immunodeficiency-73A with defective neutrophil chemotaxis and leukocytosis (IMD73A) is an immunologic disorder characterized by onset of recurrent infections in early infancy. Affected infants have periumbilical erythema and later develop skin abscesses and invasive infections. Laboratory studies show leukocytosis, neutrophilia, decreased TRECs, and T-cell abnormalities. Neutrophils showed decreased chemotaxis associated with actin polymerization abnormalities, as well as variably impaired oxidative responses. Hematopoietic stem cell transplant may be curative (summary by Accetta et al., 2011; review by Lougaris et al., 2020). In a review of autosomal forms of chronic granulomatous disease (see 306400 for genetic heterogeneity of CGD), Roos et al. (2021) noted that patients with RAC2 mutations may manifest CGD-like symptoms due to defects in neutrophil NADPH oxidase activity. [from OMIM]
Specific granule deficiency 1
Any specific granule deficiency in which the cause of the disease is a mutation in the CEBPE gene. [from MONDO]
Immunodeficiency 73b with defective neutrophil chemotaxis and lymphopenia
Immunodeficiency-73B with defective neutrophil chemotaxis (IMD73B) is an autosomal dominant immunologic disorder characterized by onset of recurrent infections in infancy or early childhood. Affected individuals develop respiratory infections, cellulitis, and severe invasive infections or sepsis; organisms include bacteria such as Staphylococcus, as well as viruses, fungi, and mycobacterial species. Laboratory studies show variable abnormalities, including B- and T-cell lymphopenia, decreased immunoglobulin subsets, decreased TRECs and dysfunctional T cells, decreased NK cells, neutropenia, and impaired neutrophil chemotaxis. Hematopoietic stem cell transplantation is curative (summary by Hsu et al., 2019; review by Lougaris et al., 2020). In a review of autosomal forms of chronic granulomatous disease (see 306400 for genetic heterogeneity of CGD), Roos et al. (2021) noted that patients with RAC2 mutations may manifest CGD-like symptoms due to defects in neutrophil NADPH oxidase activity. [from OMIM]
Immunodeficiency 81
Immunodeficiency-81 (IMD81) is an autosomal recessive complex immunologic disorder with onset of symptoms in infancy. The phenotype is highly variable and may include both immunodeficiency with recurrent infections, including bacterial and fungal infections, as well as autoimmune features, including autoimmune hemolytic anemia, pancytopenia, thrombocytopenia, and inflammatory bowel disease. Immunologic workup shows immune dysregulation with abnormalities affecting multiple immune cell lineages, including T cells, B cells, NK cells, and neutrophils, which may be decreased or increased and demonstrate functional deficits. There is a wide range of hematologic abnormalities. Affected individuals may be susceptible to severe EBV infection. The disorder is caused by a defect in intracellular immune signaling pathways (summary by Lev et al., 2021; Edwards et al., 2023). [from OMIM]
Pelger-Huet-like anomaly and episodic fever with abdominal pain
Immunodeficiency-108 with autoinflammation (IMD108) is an autosomal recessive disorder characterized mainly by features of autoinflammation, often manifest as onset of recurrent episodes of abdominal pain associated with fever and elevated inflammatory markers around adolescence. Affected individuals also have recurrent infections, particularly of the skin and nails; poor wound healing; and mild bleeding tendencies. Peripheral blood examination shows hypolobulated neutrophils, suggesting a defect in myeloid differentiation and function. However, neutrophil primary and secondary granules are normal (summary by Goos et al., 2019). [from OMIM]
Impaired neutrophil chemotaxis
An impairment of the migration of neutrophils towards chemoattractants as part of the innate immune response [from HPO]
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