Abstract
Autoimmune lymphoproliferative syndrome (ALPS) is characterized by splenomegaly, lymphadenopathy, hypergammaglobulinemia, accumulation of double-negative TCRalphabeta(+) CD4(-)CD8(-) T cells (DNT cells), and autoimmunity. Previously, DNT cell detection and a functional defect of T cells in a FAS-induced apoptosis test in vitro had been used for ALPS diagnosis. However, a functional defect can also be detected in mutation-positive relatives (MPRs) who remain free of any ALPS-related disease. In contrast, lymphocytes from patients carrying a somatic mutation of FAS exhibit normal sensitivity to FAS-induced apoptosis in vitro. We assessed the soluble FAS-L concentration in the plasma of ALPS patients carrying FAS mutations. Overall, we showed that determination of the FAS-L represents, together with the IL-10 concentration and the DNT cell percentage, a reliable tool for the diagnosis of ALPS.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adolescent
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Adult
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Autoimmune Diseases / blood
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Autoimmune Diseases / diagnosis*
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Autoimmune Diseases / genetics
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Autoimmune Diseases / metabolism
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Biomarkers / blood
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Biomarkers / metabolism
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CD4 Antigens / blood
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CD4 Antigens / metabolism
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CD8 Antigens / blood
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CD8 Antigens / metabolism
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Case-Control Studies
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Child
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Child, Preschool
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Fas Ligand Protein / blood
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Fas Ligand Protein / metabolism*
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Humans
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Infant
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Infant, Newborn
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Interleukin-10 / blood
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Interleukin-10 / metabolism*
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Lymphoproliferative Disorders / blood
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Lymphoproliferative Disorders / diagnosis*
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Lymphoproliferative Disorders / genetics
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Lymphoproliferative Disorders / metabolism
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Middle Aged
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Mutation / physiology
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Receptors, Antigen, T-Cell, alpha-beta / metabolism*
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Syndrome
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T-Lymphocytes / metabolism*
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T-Lymphocytes / pathology
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Young Adult
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fas Receptor / genetics*
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fas Receptor / physiology
Substances
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Biomarkers
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CD4 Antigens
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CD8 Antigens
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Fas Ligand Protein
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Receptors, Antigen, T-Cell, alpha-beta
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fas Receptor
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Interleukin-10