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Cyclic neutropenia (CyN), like severe congenital neutropenia (SCN), is a rare disorder. It is considered that in the general population, CyN has a frequency of one in one million. [ 1 ] It is the result of autosomal dominant mutation in ELANE gene located on the short arm (p) of chromosome 19 (19p13.3), the gene encoding neutrophil elastase ...
Additionally, acute neutropenia can be commonly seen from people recovering from a viral infection or in a post-viral state. Meanwhile, several subtypes of neutropenia exist which are rarer and chronic, including acquired (idiopathic) neutropenia, cyclic neutropenia, autoimmune neutropenia, and congenital neutropenia. [36] [37]
Severe congenital neutropenia (SCN), also often known as Kostmann syndrome or disease, is a group of rare disorders that affect myelopoiesis, causing a congenital form of neutropenia, usually without other physical malformations.
Autoimmune neutropenia (AIN) is a form of neutropenia which is most common in infants and young children [1] where the body identifies the neutrophils as enemies and makes antibodies to destroy them. Primary autoimmune neutropenia, another name for autoimmune neutropenia, is an autoimmune disease first reported in 1975 that primarily occurs in ...
About 1:1,000 to 1:4,000 individuals in the United States and Europe and 1:55,000 individuals in Japan experience myeloperoxidase deficiency. [1] [2] The most common symptom of myeloperoxidase deficiency is frequent infections, particularly by the fungus Candida albicans.
Leukocyte adhesion deficiency (LAD) is a rare autosomal recessive disorder characterized by immunodeficiency resulting in recurrent infections. [1] LAD is currently divided into three subtypes: LAD1, LAD2, and the recently described LAD3, also known as LAD-1/variant.
There are several manifestations of Chédiak–Higashi syndrome as mentioned above; however, neutropenia seems to be the most common. The syndrome is associated with oculocutaneous albinism. Patients are prone to infections, especially with Staphylococcus aureus, as well as Streptococci. [citation needed]
The rare disease cyclic neutropenia (also called "cyclic hematopoeiesis") is an autosomal dominant genetic disorder characterised by fluctuating neutrophil granulocyte counts over 21-day periods. During neutropenia, patients are at risk for infections. In 1999, this disease was linked to disorders in the ELA-2 / ELANE gene. [10]