Compendium of Cancer Genome Aberrations

HAEM5:Systemic chronic active EBV disease: Difference between revisions

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[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (WHO Classification, 5th ed.)]]
[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (WHO Classification, 5th ed.)]]


==Primary Author(s)*==
==Primary Author(s)* ==


Karin Miller, MD<span style="color:#0070C0"> </span>
Karin Miller, MD<span style="color:#0070C0"> </span>
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|Monoclonality detected in ~47% of cases<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Ito|first2=Yoshinori|last3=Kawabe|first3=Shinji|last4=Gotoh|first4=Kensei|last5=Takahashi|first5=Yoshiyuki|last6=Kojima|first6=Seiji|last7=Naoe|first7=Tomoki|last8=Esaki|first8=Shinichi|last9=Kikuta|first9=Atsushi|date=2012-01-19|title=EBV-associated T/NK-cell lymphoproliferative diseases in nonimmunocompromised hosts: prospective analysis of 108 cases|url=https://pubmed.ncbi.nlm.nih.gov/22096243|journal=Blood|volume=119|issue=3|pages=673–686|doi=10.1182/blood-2011-10-381921|issn=1528-0020|pmid=22096243}}</ref>
|Monoclonality detected in ~47% of cases<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Ito|first2=Yoshinori|last3=Kawabe|first3=Shinji|last4=Gotoh|first4=Kensei|last5=Takahashi|first5=Yoshiyuki|last6=Kojima|first6=Seiji|last7=Naoe|first7=Tomoki|last8=Esaki|first8=Shinichi|last9=Kikuta|first9=Atsushi|date=2012-01-19|title=EBV-associated T/NK-cell lymphoproliferative diseases in nonimmunocompromised hosts: prospective analysis of 108 cases|url=https://pubmed.ncbi.nlm.nih.gov/22096243|journal=Blood|volume=119|issue=3|pages=673–686|doi=10.1182/blood-2011-10-381921|issn=1528-0020|pmid=22096243}}</ref>
|D
|D
|The WHO 5<sup>th</sup> edition notes that, "cases with monomorphic and monoclonal proliferation have a poorer outcome than those with polymorphic and polyclonal proliferation."<ref name=":0">{{Cite journal|title=BlueBooksOnline|url=https://tumourclassification.iarc.who.int/chapters/63}}</ref><ref>{{Cite journal|last=Ohshima|first=Koichi|last2=Kimura|first2=Hiroshi|last3=Yoshino|first3=Tadashi|last4=Kim|first4=Chul Woo|last5=Ko|first5=Young H.|last6=Lee|first6=Seung-Suk|last7=Peh|first7=Suat-Cheng|last8=Chan|first8=John K. C.|last9=CAEBV Study Group|date=2008-04|title=Proposed categorization of pathological states of EBV-associated T/natural killer-cell lymphoproliferative disorder (LPD) in children and young adults: overlap with chronic active EBV infection and infantile fulminant EBV T-LPD|url=https://pubmed.ncbi.nlm.nih.gov/18324913|journal=Pathology International|volume=58|issue=4|pages=209–217|doi=10.1111/j.1440-1827.2008.02213.x|issn=1440-1827|pmid=18324913}}</ref>
|The WHO 5<sup>th</sup> edition notes that, "cases with monomorphic and monoclonal proliferation have a poorer outcome than those with polymorphic and polyclonal proliferation."<ref name=":5">The WHO Classification of Tumours Editorial Board, ed. ''Haematolymphoid Tumours: Who Classification of Tumours''. 5th ed. International Agency for Research on Cancer; 2024.</ref><ref name=":0">{{Cite journal|title=BlueBooksOnline|url=https://tumourclassification.iarc.who.int/chapters/63}}</ref><ref>{{Cite journal|last=Ohshima|first=Koichi|last2=Kimura|first2=Hiroshi|last3=Yoshino|first3=Tadashi|last4=Kim|first4=Chul Woo|last5=Ko|first5=Young H.|last6=Lee|first6=Seung-Suk|last7=Peh|first7=Suat-Cheng|last8=Chan|first8=John K. C.|last9=CAEBV Study Group|date=2008-04|title=Proposed categorization of pathological states of EBV-associated T/natural killer-cell lymphoproliferative disorder (LPD) in children and young adults: overlap with chronic active EBV infection and infantile fulminant EBV T-LPD|url=https://pubmed.ncbi.nlm.nih.gov/18324913|journal=Pathology International|volume=58|issue=4|pages=209–217|doi=10.1111/j.1440-1827.2008.02213.x|issn=1440-1827|pmid=18324913}}</ref>
|N/A
|N/A
|}
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* Somatic mutations can be detected in a subset of CAEBV cases (~29%).<ref name=":2">{{Cite journal|last=Okuno|first=Yusuke|last2=Murata|first2=Takayuki|last3=Sato|first3=Yoshitaka|last4=Muramatsu|first4=Hideki|last5=Ito|first5=Yoshinori|last6=Watanabe|first6=Takahiro|last7=Okuno|first7=Tatsuya|last8=Murakami|first8=Norihiro|last9=Yoshida|first9=Kenichi|date=2019-03|title=Defective Epstein-Barr virus in chronic active infection and haematological malignancy|url=https://pubmed.ncbi.nlm.nih.gov/30664667|journal=Nature Microbiology|volume=4|issue=3|pages=404–413|doi=10.1038/s41564-018-0334-0|issn=2058-5276|pmid=30664667}}</ref>
* Somatic mutations can be detected in a subset of CAEBV cases (~29%).<ref name=":2">{{Cite journal|last=Okuno|first=Yusuke|last2=Murata|first2=Takayuki|last3=Sato|first3=Yoshitaka|last4=Muramatsu|first4=Hideki|last5=Ito|first5=Yoshinori|last6=Watanabe|first6=Takahiro|last7=Okuno|first7=Tatsuya|last8=Murakami|first8=Norihiro|last9=Yoshida|first9=Kenichi|date=2019-03|title=Defective Epstein-Barr virus in chronic active infection and haematological malignancy|url=https://pubmed.ncbi.nlm.nih.gov/30664667|journal=Nature Microbiology|volume=4|issue=3|pages=404–413|doi=10.1038/s41564-018-0334-0|issn=2058-5276|pmid=30664667}}</ref>
* ''DDX3X'' mutations are the most commonly implicated known driver mutations. <ref name=":2" />
* ''DDX3X'' mutations are the most commonly implicated known driver mutations. <ref name=":2" />
** Mutations in KMT2D,KMT2B, BCOR/BCORL1, TET2, KDM6A, NFKB1, and ARID1a have also been described.<ref name=":2" /><ref>{{Cite journal|last=Akazawa|first=Ryo|last2=Mikami|first2=Takashi|last3=Yamada|first3=Masaki|last4=Kato|first4=Itaru|last5=Kubota|first5=Hirohito|last6=Saida|first6=Satoshi|last7=Uchihara|first7=Yoshinori|last8=Ishikawa|first8=Yuriko|last9=Kamitori|first9=Tatsuya|date=2025-11-06|title=Multiomics analysis reveals the genetic and epigenetic features of high-risk NK cell-type chronic active EBV infection|url=https://pubmed.ncbi.nlm.nih.gov/40737598|journal=Blood|volume=146|issue=19|pages=2336–2349|doi=10.1182/blood.2024026805|issn=1528-0020|pmid=40737598}}</ref>
** Mutations in KMT2D, KMT2B, BCOR/BCORL1, TET2, KDM6A, NFKB1, and ARID1a have also been described.<ref name=":2" /><ref>{{Cite journal|last=Akazawa|first=Ryo|last2=Mikami|first2=Takashi|last3=Yamada|first3=Masaki|last4=Kato|first4=Itaru|last5=Kubota|first5=Hirohito|last6=Saida|first6=Satoshi|last7=Uchihara|first7=Yoshinori|last8=Ishikawa|first8=Yuriko|last9=Kamitori|first9=Tatsuya|date=2025-11-06|title=Multiomics analysis reveals the genetic and epigenetic features of high-risk NK cell-type chronic active EBV infection|url=https://pubmed.ncbi.nlm.nih.gov/40737598|journal=Blood|volume=146|issue=19|pages=2336–2349|doi=10.1182/blood.2024026805|issn=1528-0020|pmid=40737598}}</ref>
* In one study, identical driver mutations were detected in different cell lineages (T, B, and NK), demonstrating that EBV infected a common lymphoid progenitor in CAEBV patients. Acquisition of somatic, driver mutations in these pre-malignant, EBV-infected cells subsequently leads to clonal evolution in multiple cell lines.<ref name=":2" />
* In one study, identical driver mutations were detected in different cell lineages (T, B, and NK), demonstrating that EBV infected a common lymphoid progenitor in CAEBV patients. Acquisition of somatic, driver mutations in these pre-malignant, EBV-infected cells subsequently leads to clonal evolution in multiple cell lines.<ref name=":2" />
* Presence of a driver mutation associated with shorter overall survival<ref name=":2" />
* Presence of a driver mutation associated with shorter overall survival<ref name=":2" />
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==Genetic Diagnostic Testing Methods==
==Genetic Diagnostic Testing Methods==


* The WHO 5<sup>th</sup> edition essential diagnostic criteria include:<ref name=":0" />
* '''Both the WHO 5<sup>th</sup> edition and International Consensus Classification (ICC) include detection of increased EBV DNA in the peripheral blood (>10,000 IU/mL in ICC criteria) and/or EBV RNA (EBER) or viral protein in T or NK-cells of affected tissues.'''<ref name=":5" />'''<ref name=":0" /><ref name=":1">Arber DA, Borowitz MJ, Cook JR, et al. ''The International Consensus Classification of Myeloid and Lymphoid Neoplasms''.; 2025.</ref>'''
** Persistent (greater than 3 months) infectious mononucleosis-like symptoms
** Increased EBV DNA in the peripheral blood or EBER-positive cells in affected organs with evidence of EBV infection in T or NK-cells
** Exclusion of known immunodeficiency, malignancy, or autoimmune disorders
 
* The International Consensus Classification (ICC) revised diagnostic criteria include:<ref name=":1">Arber DA, Borowitz MJ, Cook JR, et al. ''The International Consensus Classification of Myeloid and Lymphoid Neoplasms''.; 2025.</ref>
** Persistent (greater than 3 months) infectious mononucleosis-like symptoms
** Increased EBV DNA (>10,000 IU/mL) in the peripheral blood
** Histologic evidence of organ disease
** Detection of EBV RNA or viral protein in T or NK-cells in affected tissues
** Exclusion of known immunodeficiency, malignancy, or autoimmune disorders
 
* '''Both the WHO 5<sup>th</sup> edition and ICC include detection of increased EBV DNA in the peripheral blood and/or EBV RNA (EBER) or viral protein in T or NK-cells of affected tissues.<ref name=":0" /><ref name=":1" />'''
** Whole blood or peripheral blood mononuclear cells are preferred for EBV DNA PCR testing, as serum or plasma are less sensitive for CAEBV disease<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Cohen|first2=Jeffrey I.|date=2017|title=Chronic Active Epstein-Barr Virus Disease|url=https://pubmed.ncbi.nlm.nih.gov/29375552|journal=Frontiers in Immunology|volume=8|pages=1867|doi=10.3389/fimmu.2017.01867|issn=1664-3224|pmc=5770746|pmid=29375552}}</ref>
** Whole blood or peripheral blood mononuclear cells are preferred for EBV DNA PCR testing, as serum or plasma are less sensitive for CAEBV disease<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Cohen|first2=Jeffrey I.|date=2017|title=Chronic Active Epstein-Barr Virus Disease|url=https://pubmed.ncbi.nlm.nih.gov/29375552|journal=Frontiers in Immunology|volume=8|pages=1867|doi=10.3389/fimmu.2017.01867|issn=1664-3224|pmc=5770746|pmid=29375552}}</ref>
** In tissues, using a double stain for B, T, or NK-cell markers and EBV is recommended.
** In tissues, using a double stain for B, T, or NK-cell markers and EBV is recommended.
* TCR-gene rearrangements can be tested via PCR-Capillary Electrophoresis or NGS methods
* DNA mutations (SNV/Indels) can be detected using NGS


==Familial Forms==
==Familial Forms==
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==Additional Information==
==Additional Information==


* CAEBV shows an increased prevalence in populations from Asia and natives from Central and South America, suggesting a potential for genetic polymorphisms in immune-modulating genes to play a role in disease pathogenesis.<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Cohen|first2=Jeffrey I.|date=2017|title=Chronic Active Epstein-Barr Virus Disease|url=https://pubmed.ncbi.nlm.nih.gov/29375552|journal=Frontiers in Immunology|volume=8|pages=1867|doi=10.3389/fimmu.2017.01867|issn=1664-3224|pmc=5770746|pmid=29375552}}</ref> <ref>{{Cite journal|last=Kimura|first=Hiroshi|date=2006|title=Pathogenesis of chronic active Epstein-Barr virus infection: is this an infectious disease, lymphoproliferative disorder, or immunodeficiency?|url=https://pubmed.ncbi.nlm.nih.gov/16791843|journal=Reviews in Medical Virology|volume=16|issue=4|pages=251–261|doi=10.1002/rmv.505|issn=1052-9276|pmid=16791843}}</ref>
* CAEBV shows an increased prevalence in populations from Asia and Latin America, suggesting a potential for genetic polymorphisms in immune-modulating genes to play a role in disease pathogenesis.<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Cohen|first2=Jeffrey I.|date=2017|title=Chronic Active Epstein-Barr Virus Disease|url=https://pubmed.ncbi.nlm.nih.gov/29375552|journal=Frontiers in Immunology|volume=8|pages=1867|doi=10.3389/fimmu.2017.01867|issn=1664-3224|pmc=5770746|pmid=29375552}}</ref> <ref>{{Cite journal|last=Kimura|first=Hiroshi|date=2006|title=Pathogenesis of chronic active Epstein-Barr virus infection: is this an infectious disease, lymphoproliferative disorder, or immunodeficiency?|url=https://pubmed.ncbi.nlm.nih.gov/16791843|journal=Reviews in Medical Virology|volume=16|issue=4|pages=251–261|doi=10.1002/rmv.505|issn=1052-9276|pmid=16791843}}</ref>
* EBV clonality testing showed monoclonality (84%), oligoclonality (11%), or polyclonality (5%).<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Ito|first2=Yoshinori|last3=Kawabe|first3=Shinji|last4=Gotoh|first4=Kensei|last5=Takahashi|first5=Yoshiyuki|last6=Kojima|first6=Seiji|last7=Naoe|first7=Tomoki|last8=Esaki|first8=Shinichi|last9=Kikuta|first9=Atsushi|date=2012-01-19|title=EBV-associated T/NK-cell lymphoproliferative diseases in nonimmunocompromised hosts: prospective analysis of 108 cases|url=https://pubmed.ncbi.nlm.nih.gov/22096243|journal=Blood|volume=119|issue=3|pages=673–686|doi=10.1182/blood-2011-10-381921|issn=1528-0020|pmid=22096243}}</ref> TCR clonality testing is described above (see gene rearrangements)
* EBV clonality testing showed monoclonality (84%), oligoclonality (11%), or polyclonality (5%).<ref>{{Cite journal|last=Kimura|first=Hiroshi|last2=Ito|first2=Yoshinori|last3=Kawabe|first3=Shinji|last4=Gotoh|first4=Kensei|last5=Takahashi|first5=Yoshiyuki|last6=Kojima|first6=Seiji|last7=Naoe|first7=Tomoki|last8=Esaki|first8=Shinichi|last9=Kikuta|first9=Atsushi|date=2012-01-19|title=EBV-associated T/NK-cell lymphoproliferative diseases in nonimmunocompromised hosts: prospective analysis of 108 cases|url=https://pubmed.ncbi.nlm.nih.gov/22096243|journal=Blood|volume=119|issue=3|pages=673–686|doi=10.1182/blood-2011-10-381921|issn=1528-0020|pmid=22096243}}</ref> TCR clonality testing is described above (see gene rearrangements)


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