Autoimmune lymphoproliferative syndrome laboratory findings: Difference between revisions

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{{Autoimmune lymphoproliferative syndrome}}
{{Autoimmune lymphoproliferative syndrome}}


'''Editor-In-Chief:''' David Teachey, MD [mailto:TEACHEYD@email.chop.edu]
'''Editor-In-Chief:''' {{CMG}} David Teachey, MD [mailto:TEACHEYD@email.chop.edu] {{AE}}{{SharmiB}}


==Overview==
==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==
==Laboratory Findings==
* Elevated peripheral blood Double Negative T cells (DNTs)<ref name="pmid12139944">{{cite journal| author=Bleesing JJ, Brown MR, Novicio C, Guarraia D, Dale JK, Straus SE et al.| title=A composite picture of TcR alpha/beta(+) CD4(-)CD8(-) T Cells (alpha/beta-DNTCs) in humans with autoimmune lymphoproliferative syndrome. | journal=Clin Immunol | year= 2002 | volume= 104 | issue= 1 | pages= 21-30 | pmid=12139944 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12139944  }} </ref>
** Required for diagnosis
In [[peripheral blood]]-<ref name="OliveiraBleesing2010">{{cite journal|last1=Oliveira|first1=Joao B.|last2=Bleesing|first2=Jack J.|last3=Dianzani|first3=Umberto|last4=Fleisher|first4=Thomas A.|last5=Jaffe|first5=Elaine S.|last6=Lenardo|first6=Michael J.|last7=Rieux-Laucat|first7=Frederic|last8=Siegel|first8=Richard M.|last9=Su|first9=Helen C.|last10=Teachey|first10=David T.|last11=Rao|first11=V. Koneti|title=Revised diagnostic criteria and classification for the autoimmune lymphoproliferative syndrome (ALPS): report from the 2009 NIH International Workshop|journal=Blood|volume=116|issue=14|year=2010|pages=e35–e40|issn=0006-4971|doi=10.1182/blood-2010-04-280347}}</ref><ref name="LiHuang2015">{{cite journal|last1=Li|first1=Pu|last2=Huang|first2=Ping|last3=Yang|first3=Ye|last4=Hao|first4=Mu|last5=Peng|first5=Hongwei|last6=Li|first6=Fei|title=Updated Understanding of Autoimmune Lymphoproliferative Syndrome (ALPS)|journal=Clinical Reviews in Allergy & Immunology|volume=50|issue=1|year=2015|pages=55–63|issn=1080-0549|doi=10.1007/s12016-015-8466-y}}</ref>
** Immunophenotype: CD3+/CD4-/CD8-/TCRalpha/beta+
 
** Measured by [[flow cytometry]]: Normal values <2.5% total T cells; <1% of total lymphocytes in peripheral blood
* Increased [[T cell]] [[receptor]] (TCR) αβ+/CD4-/CD8- [[T cells]]
** Marked elevations >5% virtually pathognomic for ALPS
 
** Mild elevations also found in other autoimmune diseases
* Increased [[lymphoid]] [[tissue]]
** Thought to be cytotoxic T lymphocytes that have lost CD8 expression
 
** ?Unknown if driver of disease or epiphenomenon
* Co-expression of CD45RA,CD57,CD27,CD28, [[perforin]], and [[HLA-DR]] in the DNT [[cells]] but lacking CD45R0 and CD56
** May be falsely elevated in setting of lymphopenia or falsely decreased with immunosuppressive treatment
 
* Defective in vitro Fas mediated apoptosis
* Cytopenia
** Required for diagnosis under old definition. Now can be used to make diagnosis; however, not required to make diagnosis.
 
** Time and labor intensive assay.
* Positive Coombs' test
** T cells from patient and normal control supported in culture for >10 days with mitogen stimulation and IL-2 expansion and then exposed to anti-Fas IgM monoclonal antibody
** ALPS patient T cells: Do not die with anti-Fas monoclonal antibody exposure.  Normal T cells from unaffected patient do.
* Increased soluble FAS ligand (FasL)
** False negative in somatic Fas variant ALPS and FasL variant ALPS
 
* Genetic mutations in ALPS causative genes (see below)
* High vitamin B12
* Biomarkers<ref name="pmid19176318">{{cite journal| author=Magerus-Chatinet A, Stolzenberg MC, Loffredo MS, Neven B, Schaffner C, Ducrot N et al.| title=FAS-L, IL-10, and double-negative CD4- CD8- TCR alpha/beta+ T cells are reliable markers of autoimmune lymphoproliferative syndrome (ALPS) associated with FAS loss of function. | journal=Blood | year= 2009 | volume= 113 | issue= 13 | pages= 3027-30 | pmid=19176318 | doi=10.1182/blood-2008-09-179630 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19176318  }} </ref> <ref name="pmid20227752">{{cite journal| author=Caminha I, Fleisher TA, Hornung RL, Dale JK, Niemela JE, Price S et al.| title=Using biomarkers to predict the presence of FAS mutations in patients with features of the autoimmune lymphoproliferative syndrome. | journal=J Allergy Clin Immunol | year= 2010 | volume= 125 | issue= 4 | pages= 946-949.e6 | pmid=20227752 | doi=10.1016/j.jaci.2009.12.983 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20227752  }} </ref>
 
** Polyclonal [[hypergammaglobulinemia]]<ref name="pmid20068224">{{cite journal| author=Seif AE, Manno CS, Sheen C, Grupp SA, Teachey DT| title=Identifying autoimmune lymphoproliferative syndrome in children with Evans syndrome: a multi-institutional study. | journal=Blood | year= 2010 | volume= 115 | issue= 11 | pages= 2142-5 | pmid=20068224 | doi=10.1182/blood-2009-08-239525 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20068224  }} </ref>  
* Hypergammaglobulinemia ( increased IgG, IgA,or IgM)
** Elevated serum FASL
** Elevated plasma [[IL-10]] and/or IL-18
** Elevated plasma or serum [[vitamin B12]]
* [[Autoantibodies]]: Non-specific.  Can have antibodies to blood cells (DAT, anti-neutrophil, anti-platelet).  Also, can have positive [[ANA]], [[RF]], [[ANCA]].


==References==
==References==
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[[Category:Disease]]
[[Category:Disease]]
[[Category:Hematology]]
[[Category:Hematology]]
{{WH}}
{{WS}}

Latest revision as of 02:37, 11 August 2021

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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

In peripheral blood-[1][2]

  • 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

  1. 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.
  2. 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.