Changes

==Definition / Description of Disease==

==Definition / Description of Disease==

Extranodal NK/T-cell lymphoma is a distinct entity in the [https://tumourclassification.iarc.who.int/chaptercontent/63/258 5th edition World Health Organization (WHO) classification system]. It is referred to as "extranodal NK/T-cell lymphoma, nasal type" in the 2016 WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues revised 4th edition<ref>Chan J. K. C., et al., (2017). Extranodal NK/T-cell lymphoma, nasal type, in World Health Organization Classification of Tumours of Haematopoietic and Lymphoid Tissues, Revised 4th edition. Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J, Arber DA, Hasserjian RP, Le Beau MM, Orazi A, and Siebert R, Editors. Revised 4th Edition. IARC Press: Lyon, France, p.368-371.</ref>.

Extranodal NK/T-cell lymphoma (ENKTL) is a distinct entity in the [https://tumourclassification.iarc.who.int/chaptercontent/63/258 5th edition World Health Organization (WHO) classification system]. It is referred to as "extranodal NK/T-cell lymphoma, nasal type" in the 2016 WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues revised 4th edition<ref name=":5">Chan J. K. C., et al., (2017). Extranodal NK/T-cell lymphoma, nasal type, in World Health Organization Classification of Tumours of Haematopoietic and Lymphoid Tissues, Revised 4th edition. Swerdlow SH, Campo E, Harris NL, Jaffe ES, Pileri SA, Stein H, Thiele J, Arber DA, Hasserjian RP, Le Beau MM, Orazi A, and Siebert R, Editors. Revised 4th Edition. IARC Press: Lyon, France, p.368-371.</ref>.

Extranodal NK/T-cell lymphoma (ENKTL) is a lymphoma of NK or T-cell lineage strongly associated with Epstein-Barr virus (citation needed)

* ENKTL is a lymphoma of NK or T-cell lineage strongly associated with Epstein-Barr virus<ref name=":6">{{Cite journal|last=Jaffe|first=E. S.|last2=Krenacs|first2=L.|last3=Kumar|first3=S.|last4=Kingma|first4=D. W.|last5=Raffeld|first5=M.|date=1999-01|title=Extranodal peripheral T-cell and NK-cell neoplasms|url=https://pubmed.ncbi.nlm.nih.gov/9894469|journal=American Journal of Clinical Pathology|volume=111|issue=1 Suppl 1|pages=S46–55|issn=0002-9173|pmid=9894469}}</ref>.

* The lineage (NK or T-cell) has no clinical significance<ref>{{Cite journal|last=Wang|first=Hua|last2=Fu|first2=Bi-Bo|last3=Gale|first3=Robert Peter|last4=Liang|first4=Yang|date=2021-09|title=NK-/T-cell lymphomas|url=https://pubmed.ncbi.nlm.nih.gov/34117356|journal=Leukemia|volume=35|issue=9|pages=2460–2468|doi=10.1038/s41375-021-01313-2|issn=1476-5551|pmc=8410593|pmid=34117356}}</ref>.

ENKTL is a destructive angiocentric disease characterized by vascular destruction and necrosis (citation needed)

* The differential diagnosis includes sinonasal carcinomas and other lymphomas of the nasal cavity, such as diffuse large B-cell lymphoma<ref>{{Cite journal|last=Steele|first=Toby O.|last2=Buniel|first2=Maria C.|last3=Mace|first3=Jess C.|last4=El Rassi|first4=Edward|last5=Smith|first5=Timothy L.|date=2016-09|title=Lymphoma of the nasal cavity and paranasal sinuses: A case series|url=https://pubmed.ncbi.nlm.nih.gov/27657899|journal=American Journal of Rhinology & Allergy|volume=30|issue=5|pages=335–339|doi=10.2500/ajra.2016.30.4347|issn=1945-8932|pmid=27657899}}</ref>.

 

It can be clinically divided into nasal and non-nasal types (citation needed)

 

The lineage (NK or T-cell) has no clinical significance (citation needed)

 

Put your text here <span style="color:#0070C0">(''Instructions: Brief description of approximately one paragraph - include disease context relative to other WHO classification categories referring to the specific WHO book pages, diagnostic criteria if applicable, and differential diagnosis if applicable'') </span>

==Synonyms / Terminology==

==Synonyms / Terminology==

|Unknown

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|This locus harbours multiple candidate tumour suppressor genes including ''ATG5'', ''AIM1'', ''PRDM1'', ''PTPRK'', ''HACE1'', and ''FOXO3''<ref>{{Cite journal|last=Iqbal|first=J.|last2=Kucuk|first2=C.|last3=Deleeuw|first3=R. J.|last4=Srivastava|first4=G.|last5=Tam|first5=W.|last6=Geng|first6=H.|last7=Klinkebiel|first7=D.|last8=Christman|first8=J. K.|last9=Patel|first9=K.|date=2009-06|title=Genomic analyses reveal global functional alterations that promote tumor growth and novel tumor suppressor genes in natural killer-cell malignancies|url=https://pubmed.ncbi.nlm.nih.gov/19194464|journal=Leukemia|volume=23|issue=6|pages=1139–1151|doi=10.1038/leu.2009.3|issn=1476-5551|pmid=19194464}}</ref><ref>{{Cite journal|last=Karube|first=Kennosuke|last2=Nakagawa|first2=Masao|last3=Tsuzuki|first3=Shinobu|last4=Takeuchi|first4=Ichiro|last5=Honma|first5=Keiichiro|last6=Nakashima|first6=Yasuhiro|last7=Shimizu|first7=Norio|last8=Ko|first8=Young-Hyeh|last9=Morishima|first9=Yasuo|date=2011-09-22|title=Identification of FOXO3 and PRDM1 as tumor-suppressor gene candidates in NK-cell neoplasms by genomic and functional analyses|url=https://pubmed.ncbi.nlm.nih.gov/21690554|journal=Blood|volume=118|issue=12|pages=3195–3204|doi=10.1182/blood-2011-04-346890|issn=1528-0020|pmid=21690554}}</ref><ref name=":1">{{Cite journal|last=Chen|first=Yun-Wen|last2=Guo|first2=Tianhuan|last3=Shen|first3=Lijun|last4=Wong|first4=Kai-Yau|last5=Tao|first5=Qian|last6=Choi|first6=William W. L.|last7=Au-Yeung|first7=Rex K. H.|last8=Chan|first8=Yuen-Piu|last9=Wong|first9=Michelle L. Y.|date=2015-03-05|title=Receptor-type tyrosine-protein phosphatase κ directly targets STAT3 activation for tumor suppression in nasal NK/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/25612622|journal=Blood|volume=125|issue=10|pages=1589–1600|doi=10.1182/blood-2014-07-588970|issn=1528-0020|pmid=25612622}}</ref>.

|This locus harbours multiple candidate tumour suppressor genes including ''ATG5'', ''AIM1'', ''PRDM1'', ''PTPRK'', ''HACE1'', and ''FOXO3''<ref>{{Cite journal|last=Iqbal|first=J.|last2=Kucuk|first2=C.|last3=Deleeuw|first3=R. J.|last4=Srivastava|first4=G.|last5=Tam|first5=W.|last6=Geng|first6=H.|last7=Klinkebiel|first7=D.|last8=Christman|first8=J. K.|last9=Patel|first9=K.|date=2009-06|title=Genomic analyses reveal global functional alterations that promote tumor growth and novel tumor suppressor genes in natural killer-cell malignancies|url=https://pubmed.ncbi.nlm.nih.gov/19194464|journal=Leukemia|volume=23|issue=6|pages=1139–1151|doi=10.1038/leu.2009.3|issn=1476-5551|pmid=19194464}}</ref><ref name=":7">{{Cite journal|last=Karube|first=Kennosuke|last2=Nakagawa|first2=Masao|last3=Tsuzuki|first3=Shinobu|last4=Takeuchi|first4=Ichiro|last5=Honma|first5=Keiichiro|last6=Nakashima|first6=Yasuhiro|last7=Shimizu|first7=Norio|last8=Ko|first8=Young-Hyeh|last9=Morishima|first9=Yasuo|date=2011-09-22|title=Identification of FOXO3 and PRDM1 as tumor-suppressor gene candidates in NK-cell neoplasms by genomic and functional analyses|url=https://pubmed.ncbi.nlm.nih.gov/21690554|journal=Blood|volume=118|issue=12|pages=3195–3204|doi=10.1182/blood-2011-04-346890|issn=1528-0020|pmid=21690554}}</ref><ref name=":1">{{Cite journal|last=Chen|first=Yun-Wen|last2=Guo|first2=Tianhuan|last3=Shen|first3=Lijun|last4=Wong|first4=Kai-Yau|last5=Tao|first5=Qian|last6=Choi|first6=William W. L.|last7=Au-Yeung|first7=Rex K. H.|last8=Chan|first8=Yuen-Piu|last9=Wong|first9=Michelle L. Y.|date=2015-03-05|title=Receptor-type tyrosine-protein phosphatase κ directly targets STAT3 activation for tumor suppression in nasal NK/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/25612622|journal=Blood|volume=125|issue=10|pages=1589–1600|doi=10.1182/blood-2014-07-588970|issn=1528-0020|pmid=25612622}}</ref>.

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|EXAMPLE

|EXAMPLE

==Characteristic Chromosomal Patterns==

==Characteristic Chromosomal Patterns==

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!Notes

!Notes

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|Isochromosome 7q<ref>{{Cite journal|last=Feldman|first=Andrew L.|last2=Law|first2=Mark|last3=Grogg|first3=Karen L.|last4=Thorland|first4=Erik C.|last5=Fink|first5=Stephanie|last6=Kurtin|first6=Paul J.|last7=Macon|first7=William R.|last8=Remstein|first8=Ellen D.|last9=Dogan|first9=Ahmet|date=2008-08|title=Incidence of TCR and TCL1 gene translocations and isochromosome 7q in peripheral T-cell lymphomas using fluorescence in situ hybridization|url=https://pubmed.ncbi.nlm.nih.gov/18628085|journal=American Journal of Clinical Pathology|volume=130|issue=2|pages=178–185|doi=10.1309/PNXUKA1CFJMVGCN1|issn=0002-9173|pmc=3625137|pmid=18628085}}</ref>

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|Unknown

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|JAK3 inhibitor is a potential therapeutic option<ref>{{Cite journal|last=Nairismägi|first=M.-L.|last2=Gerritsen|first2=M. E.|last3=Li|first3=Z. M.|last4=Wijaya|first4=G. C.|last5=Chia|first5=B. K. H.|last6=Laurensia|first6=Y.|last7=Lim|first7=J. Q.|last8=Yeoh|first8=K. W.|last9=Yao|first9=X. S.|date=2018-05|title=Oncogenic activation of JAK3-STAT signaling confers clinical sensitivity to PRN371, a novel selective and potent JAK3 inhibitor, in natural killer/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/29434279|journal=Leukemia|volume=32|issue=5|pages=1147–1156|doi=10.1038/s41375-017-0004-x|issn=1476-5551|pmc=5940653|pmid=29434279}}</ref>  

|JAK3 inhibitor is a potential therapeutic option<ref>{{Cite journal|last=Nairismägi|first=M.-L.|last2=Gerritsen|first2=M. E.|last3=Li|first3=Z. M.|last4=Wijaya|first4=G. C.|last5=Chia|first5=B. K. H.|last6=Laurensia|first6=Y.|last7=Lim|first7=J. Q.|last8=Yeoh|first8=K. W.|last9=Yao|first9=X. S.|date=2018-05|title=Oncogenic activation of JAK3-STAT signaling confers clinical sensitivity to PRN371, a novel selective and potent JAK3 inhibitor, in natural killer/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/29434279|journal=Leukemia|volume=32|issue=5|pages=1147–1156|doi=10.1038/s41375-017-0004-x|issn=1476-5551|pmc=5940653|pmid=29434279}}</ref>

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|''TP53''<ref name=":2" />

|''TP53''<ref name=":2" />

|Tumor suppressor gene

|Tumor suppressor gene

|24-62%<ref>{{Cite journal|last=Quintanilla-Martinez|first=L.|last2=Kremer|first2=M.|last3=Keller|first3=G.|last4=Nathrath|first4=M.|last5=Gamboa-Dominguez|first5=A.|last6=Meneses|first6=A.|last7=Luna-Contreras|first7=L.|last8=Cabras|first8=A.|last9=Hoefler|first9=H.|date=2001-12|title=p53 Mutations in nasal natural killer/T-cell lymphoma from Mexico: association with large cell morphology and advanced disease|url=https://pubmed.ncbi.nlm.nih.gov/11733360|journal=The American Journal of Pathology|volume=159|issue=6|pages=2095–2105|doi=10.1016/S0002-9440(10)63061-1|issn=0002-9440|pmc=1850589|pmid=11733360}}</ref><ref>{{Cite journal|last=Hongyo|first=Tadashi|last2=Hoshida|first2=Yoshihiko|last3=Nakatsuka|first3=Shin-Ichi|last4=Syaifudin|first4=Mukh|last5=Kojya|first5=Shizuo|last6=Yang|first6=Woo-Ick|last7=Min|first7=Yoo-Hong|last8=Chan|first8=Heekyung|last9=Kim|first9=Chan Hwan|date=2005-02|title=p53, K-ras, c-kit and beta-catenin gene mutations in sinonasal NK/T-cell lymphoma in Korea and Japan|url=https://pubmed.ncbi.nlm.nih.gov/15643509|journal=Oncology Reports|volume=13|issue=2|pages=265–271|issn=1021-335X|pmid=15643509}}</ref>

|24-62%<ref>{{Cite journal|last=Quintanilla-Martinez|first=L.|last2=Kremer|first2=M.|last3=Keller|first3=G.|last4=Nathrath|first4=M.|last5=Gamboa-Dominguez|first5=A.|last6=Meneses|first6=A.|last7=Luna-Contreras|first7=L.|last8=Cabras|first8=A.|last9=Hoefler|first9=H.|date=2001-12|title=p53 Mutations in nasal natural killer/T-cell lymphoma from Mexico: association with large cell morphology and advanced disease|url=https://pubmed.ncbi.nlm.nih.gov/11733360|journal=The American Journal of Pathology|volume=159|issue=6|pages=2095–2105|doi=10.1016/S0002-9440(10)63061-1|issn=0002-9440|pmc=1850589|pmid=11733360}}</ref><ref name=":8">{{Cite journal|last=Hongyo|first=Tadashi|last2=Hoshida|first2=Yoshihiko|last3=Nakatsuka|first3=Shin-Ichi|last4=Syaifudin|first4=Mukh|last5=Kojya|first5=Shizuo|last6=Yang|first6=Woo-Ick|last7=Min|first7=Yoo-Hong|last8=Chan|first8=Heekyung|last9=Kim|first9=Chan Hwan|date=2005-02|title=p53, K-ras, c-kit and beta-catenin gene mutations in sinonasal NK/T-cell lymphoma in Korea and Japan|url=https://pubmed.ncbi.nlm.nih.gov/15643509|journal=Oncology Reports|volume=13|issue=2|pages=265–271|issn=1021-335X|pmid=15643509}}</ref>

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|''MGA''

|''PRDM1''<ref name=":9">{{Cite journal|last=Huang|first=Yenlin|last2=de Leval|first2=Laurence|last3=Gaulard|first3=Philippe|date=2013-03|title=Molecular underpinning of extranodal NK/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/23768641|journal=Best Practice & Research. Clinical Haematology|volume=26|issue=1|pages=57–74|doi=10.1016/j.beha.2013.04.006|issn=1532-1924|pmid=23768641}}</ref><ref name=":7" /><ref>{{Cite journal|last=Küçük|first=Can|last2=Iqbal|first2=Javeed|last3=Hu|first3=Xiaozhou|last4=Gaulard|first4=Phillip|last5=De Leval|first5=Laurence|last6=Srivastava|first6=Gopesh|last7=Au|first7=Wing Yan|last8=McKeithan|first8=Timothy W.|last9=Chan|first9=Wing C.|date=2011-12-13|title=PRDM1 is a tumor suppressor gene in natural killer cell malignancies|url=https://pubmed.ncbi.nlm.nih.gov/22143801|journal=Proceedings of the National Academy of Sciences of the United States of America|volume=108|issue=50|pages=20119–20124|doi=10.1073/pnas.1115128108|issn=1091-6490|pmc=3250125|pmid=22143801}}</ref>

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|PRDM1

|''ATG5''<ref name=":9" />

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|ATG5

|''AIM1''<ref name=":9" />

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|AIM1

|''FOXO3''<ref name=":9" /><ref name=":7" />

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|FOXO3

|''HACE1''<ref name=":9" /><ref>{{Cite journal|last=Huang|first=Yenlin|last2=de Reyniès|first2=Aurélien|last3=de Leval|first3=Laurence|last4=Ghazi|first4=Bouchra|last5=Martin-Garcia|first5=Nadine|last6=Travert|first6=Marion|last7=Bosq|first7=Jacques|last8=Brière|first8=Josette|last9=Petit|first9=Barbara|date=2010-02-11|title=Gene expression profiling identifies emerging oncogenic pathways operating in extranodal NK/T-cell lymphoma, nasal type|url=https://pubmed.ncbi.nlm.nih.gov/19965620|journal=Blood|volume=115|issue=6|pages=1226–1237|doi=10.1182/blood-2009-05-221275|issn=1528-0020|pmc=2826234|pmid=19965620}}</ref>

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|HACE1

|''RAS''<ref name=":8" />

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==Epigenomic Alterations==

==Epigenomic Alterations==

A 2015 study by Lee'', et al'' reported that histone modification-related genes accounted for 38.2% of 34 ENKTL samples by next-generation sequencing<ref name=":4" />.

A 2015 study by Lu, et al uncovered recurrent mutations in the RNA helicase gene ''DDX3X'' and other epigenetic modifiers including ''KMT2D (MLL2), ARID1A, EP300'', and ''ASXL3''<ref name=":2" />.

 

Similarly, a 2015 study by Lu, et al uncovered recurrent mutations in the RNA helicase gene DDX3X and other epigenetic modifiers including KMT2D (MLL2), ARID1A, EP300, and ASXL3<ref name=":2" />.

* ''DDX3X'' (RNA helicase)

Similarly, a 2015 study by Lee'', et al'' reported that histone modification-related genes, including ''BCOR'' and ''KMT2D (MLL2),'' accounted for 38.2% of 34 ENKTL samples by next-generation sequencing<ref name=":4" />.

* ''KMT2D/MLL2''

* ''ARID1A''

* ''BCOR''

==Genes and Main Pathways Involved==

==Genes and Main Pathways Involved==

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!Gene; Genetic Alteration!!Pathway!!Pathophysiologic Outcome

!Gene; Genetic Alteration!!Pathway!!Pathophysiologic Outcome

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|EXAMPLE: BRAF and MAP2K1; Activating mutations

|EXAMPLE: BRAF and MAP2K1; Activating mutations