Journal
CURRENT OPINION IN ALLERGY AND CLINICAL IMMUNOLOGY
Volume 8, Issue 6, Pages 499-509Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ACI.0b013e328312c790
Keywords
flow cytometry; immunophenotype; intracellular protein; primary immune deficiency; protein phosphorylation
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Funding
- Intramural NIH HHS Funding Source: Medline
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Purpose of review This review focuses on the current applications of flow cytometry for the diagnosis and evaluation of primary immune deficiencies (PIDs). Recent findings The immunophenotypic evaluation of selected FIN provides diagnostic clues as well as information useful to classify patients and predict clinical outcome. In addition, the, evaluation of intracellular proteins associated with selected PIN has evolved as a useful diagnostic screening method. Finally, functional flow cytometry can now help to clarify possible sites of genetic defects associated with specific PIDs. Summary The range of PIDs in which flow cytometry has proven to be useful from a clinical and diagnostic purpose has significantly expanded. This now includes not only patients presenting with clinical histories consistent with classical antibody deficiencies and severe combined immune deficiency, but also patients with more limited infectious histories. Included among these are patients with genetic defects associated with Mendelian susceptibility to mycobacterial disease focusing the evaluation on specific surface protein expression and cell function analysis. In addition, flow cytometry appears to provide a useful screening approach to evaluate for possible toll-like receptor-pathway defects. Furthermore, immunophenotyping and intracellular flow cytometry have proven to be valuable discriminators in the evaluation of patients with immune dysregulation syndromes including immune dysregulation, polyendocrinopathy, enteropathy, X-linked, and autoimmune lymphoproliferative syndrome. Finally, flow cytometry has been shown to be useful to screen patients with possible X-linked lymphoproliferative syndrome and familial hemophagocytic lymphohistiocytosis.
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