WHIM syndrome

WHIM syndrome
OMIM	193670
DiseasesDB	32165

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WHIM Syndrome (or Wart, Hypogammaglobulinemia, Infection, and Myelokathexis syndrome) is a rare congenital immunodeficiency disorder characterized by chronic noncyclic neutropenia.

Diagnosis

Patients exhibit increased susceptibility to bacterial and viral infections, especially from common serotype human papilloma virus, resulting in warts on the hands and feet starting in childhood. Myelokathexis refers to retention (kathexis) of neutrophils in the bone marrow (myelo). In addition, lymphocytes and antibody levels (gammaglobulins) are often deficient.

Pathophysiology

WHIM syndrome has an autosomal dominant pattern of inheritance.

WHIM syndrome results from autosomal dominant mutations in the gene for the chemokine receptor, CXCR4, resulting in a carboxy-terminus truncation of the receptor of between ten and 19 residues. The gene mutant is located on 2q21. WHIM syndrome is one of only a few diseases directly and primarily caused by an aberrant chemokine, making its molecular biology important in understanding the role of cell signaling and trafficking.