Autoimmune lymphoproliferative syndrome laboratory findings
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Editor-In-Chief: Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] David Teachey, MD [2] Associate Editor(s)-in-Chief: Sharmi Biswas, M.B.B.S
Overview
An elevated concentration of serum double negative α/β T cells comprising more than 1.5% of the total lymphocytes or at least 2.5% of total T cells along with chronic lymphadenopathy or splenomegaly for more than 6 months are the two required testing for clinical diagnosis of Autoimmune lymphoproliferative syndrome which leads to ancillary testing. Confirmatory testing for ALPS is the testing for the ALPS-related mutations or functional testing of patient T cells are requires according to the 2010 guidelines.
Laboratory Findings
- Co-expression of CD45RA,CD57,CD27,CD28, perforin, and HLA-DR in the DNT cells but lacking CD45R0 and CD56
- Cytopenia
- Positive Coombs' test
- Increased soluble FAS ligand (FasL)
- High vitamin B12
- Hypergammaglobulinemia ( increased IgG, IgA,or IgM)
References
- ↑ Oliveira, Joao B.; Bleesing, Jack J.; Dianzani, Umberto; Fleisher, Thomas A.; Jaffe, Elaine S.; Lenardo, Michael J.; Rieux-Laucat, Frederic; Siegel, Richard M.; Su, Helen C.; Teachey, David T.; Rao, V. Koneti (2010). "Revised diagnostic criteria and classification for the autoimmune lymphoproliferative syndrome (ALPS): report from the 2009 NIH International Workshop". Blood. 116 (14): e35–e40. doi:10.1182/blood-2010-04-280347. ISSN 0006-4971.
- ↑ Li, Pu; Huang, Ping; Yang, Ye; Hao, Mu; Peng, Hongwei; Li, Fei (2015). "Updated Understanding of Autoimmune Lymphoproliferative Syndrome (ALPS)". Clinical Reviews in Allergy & Immunology. 50 (1): 55–63. doi:10.1007/s12016-015-8466-y. ISSN 1080-0549.