Difference between revisions of "HAEM5:Extranodal NK/T-cell lymphoma"

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{{DISPLAYTITLE:Extranodal NK/T-cell lymphoma}}
 
{{DISPLAYTITLE:Extranodal NK/T-cell lymphoma}}
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[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (5th ed.)]]
 
[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (5th ed.)]]
  
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==Primary Author(s)*==
 
==Primary Author(s)*==
  
Put your text here<span style="color:#0070C0"> (''Name and affiliation; example:'' Jane Smith, PhD, Institute of Genomics) </span>
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Teodora Popa, MD, Queen's University
 +
 
 +
Amanda Xu, MD/MSc, Queen's University
  
 
__TOC__
 
__TOC__
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==Cancer Category / Type==
 
==Cancer Category / Type==
  
Put your text here
+
Mature T-cell and NK-cell neoplasms
  
 
==Cancer Sub-Classification / Subtype==
 
==Cancer Sub-Classification / Subtype==
  
Put your text here
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EBV-positive T-cell and NK-cell neoplasms
  
 
==Definition / Description of Disease==
 
==Definition / Description of Disease==
  
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>
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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>.
 +
 
 +
*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>.
 +
*It is a destructive angiocentric disease characterized by vascular destruction and necrosis<ref>{{Cite journal|last=Aviles|first=A.|last2=Rodriguez|first2=L.|last3=Guzman|first3=R.|last4=Talavera|first4=A.|last5=Garcia|first5=E. L.|last6=Diaz-Maqueo|first6=J. C.|date=1992|title=Angiocentric T-cell lymphoma of the nose, paranasal sinuses and hard palate|url=https://pubmed.ncbi.nlm.nih.gov/1398510|journal=Hematological Oncology|volume=10|issue=3-4|pages=141–147|doi=10.1002/hon.2900100303|issn=0278-0232|pmid=1398510}}</ref>.
 +
*It can be clinically divided into nasal and non-nasal types, the latter most often occurring in the skin and intestinal tract<ref name=":5" /><ref name=":6" />.
 +
*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>.
 +
 
 +
*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>.
  
 
==Synonyms / Terminology==
 
==Synonyms / Terminology==
  
Put your text here <span style="color:#0070C0">(''Instructions: Include currently used terms and major historical ones, adding “(historical)” after the latter.'') </span>
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Extranodal NK/T-cell lymphoma, nasal type; EBV-positive extranodal NK/T-cell lymphoma; angiocentric lymphoma (not recommended); lethal midline granuloma (historical)
  
 
==Epidemiology / Prevalence==
 
==Epidemiology / Prevalence==
  
Put your text here
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ENKTL is most prevalent in East Asia and Latin America. It represents less than 1% of non-Hodgkin lymphomas in the United States, with the highest incidence among Asian Pacific Islanders and Hispanic populations<ref>{{Cite journal|last=Haverkos|first=Bradley M.|last2=Pan|first2=Zenggang|last3=Gru|first3=Alejandro A.|last4=Freud|first4=Aharon G.|last5=Rabinovitch|first5=Rachel|last6=Xu-Welliver|first6=Meng|last7=Otto|first7=Brad|last8=Barrionuevo|first8=Carlos|last9=Baiocchi|first9=Robert A.|date=2016-12|title=Extranodal NK/T-cell lymphoma, nasal type (ENKTL-NT): An update on epidemiology, clinical presentation, and natural history in North American and European cases|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5199232/|journal=Current hematologic malignancy reports|volume=11|issue=6|pages=514–527|doi=10.1007/s11899-016-0355-9|issn=1558-8211|pmc=5199232|pmid=27778143}}</ref>.
  
 
==Clinical Features==
 
==Clinical Features==
  
Put your text here and fill in the table <span style="color:#0070C0">(''Instruction: Can include references in the table'') </span>
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Common clinical presentations of nasal-type ENKTL include nasal mass, obstruction, and bleeding. Patients with abdominal involvement may present with abdominal pain, gastrointestinal (GI) bleed, or perforation<ref name=":0">Thida AM, Gohari P. Extranodal NK-Cell Lymphoma. [Updated 2023 Jul 17]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from: <nowiki>https://www.ncbi.nlm.nih.gov/books/NBK559207/</nowiki></ref>. The presence of B symptoms is associated with higher clinical stage<ref>{{Cite journal|last=Takahara|first=Miki|last2=Kumai|first2=Takumi|last3=Kishibe|first3=Kan|last4=Nagato|first4=Toshihiro|last5=Harabuchi|first5=Yasuaki|date=2021-06-25|title=Extranodal NK/T-Cell Lymphoma, Nasal Type: Genetic, Biologic, and Clinical Aspects with a Central Focus on Epstein-Barr Virus Relation|url=https://pubmed.ncbi.nlm.nih.gov/34202088|journal=Microorganisms|volume=9|issue=7|pages=1381|doi=10.3390/microorganisms9071381|issn=2076-2607|pmc=8304202|pmid=34202088}}</ref>.
 
{| class="wikitable"
 
{| class="wikitable"
 
|'''Signs and Symptoms'''
 
|'''Signs and Symptoms'''
|EXAMPLE Asymptomatic (incidental finding on complete blood counts)
+
|Nasal mass, nasal obstruction, nasal bleeding
 
+
Hoarseness, dysphagia, halitosis, airway obstruction, dysphonia
EXAMPLE B-symptoms (weight loss, fever, night sweats)
 
  
EXAMPLE Fatigue
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Abdominal pain, GI bleeding, bowel perforation
  
EXAMPLE Lymphadenopathy (uncommon)
+
B symptoms (fever, weight loss, night sweats)
 
|-
 
|-
 
|'''Laboratory Findings'''
 
|'''Laboratory Findings'''
|EXAMPLE Cytopenias
+
|No specific findings
 
+
Cytopenias
EXAMPLE Lymphocytosis (low level)
 
 
|}
 
|}
  
 
==Sites of Involvement==
 
==Sites of Involvement==
  
Put your text here <span style="color:#0070C0">(''Instruction: Indicate physical sites; Example: nodal, extranodal, bone marrow'') </span>
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Most cases of ENKTL are nasal type, meaning they involve the upper aerodigestive tract. Extranasal ENKTL may involve the skin, testis, and gastrointestinal tract<ref name=":0" />. Bone marrow involvement is uncommon<ref>{{Cite journal|last=Wong|first=K. F.|last2=Chan|first2=J. K.|last3=Cheung|first3=M. M.|last4=So|first4=J. C.|date=2001-02|title=Bone marrow involvement by nasal NK cell lymphoma at diagnosis is uncommon|url=https://pubmed.ncbi.nlm.nih.gov/11211616|journal=American Journal of Clinical Pathology|volume=115|issue=2|pages=266–270|doi=10.1309/E5PR-6A9R-Q02N-8QVW|issn=0002-9173|pmid=11211616}}</ref>.
  
 
==Morphologic Features==
 
==Morphologic Features==
  
Put your text here
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*Diffuse lymphomatous infiltrate composed of small, medium, or large and anaplastic cells (or a mix of small and large cells). The cells have irregularly folded nuclei and moderate pale cytoplasm.
 +
*Loss of mucosal glands.
 +
*Angiocentric and angiodestructive growth pattern.
 +
*Coagulative necrosis and apoptosis.
 +
*Mitotic figures.
 +
 
 +
Pitfalls:
 +
 
 +
*Mucosal ulceration and superimposed inflammation can mimic an inflammatory process, particularly in less aggressive cases<ref>Devins, K., Schuster, S.J., Caponetti, G.C. ''et al.'' Rare case of low-grade extranodal NK/T-cell lymphoma, nasal type, arising in the setting of chronic rhinosinusitis and harboring a novel N-terminal ''KIT'' mutation. ''Diagn Pathol'' 13, 92 (2018). <nowiki>https://doi.org/10.1186/s13000-018-0765-1</nowiki></ref>.
 +
*Pseudoepitheliomatous hyperplasia of the overlying mucosal epithelium can mimic squamous cell carcinoma<ref>{{Cite journal|last=Ling|first=Yi-Hong|last2=Zhu|first2=Chong-Mei|last3=Wen|first3=Shi-Hong|last4=Luo|first4=Rong-Zhen|last5=Li|first5=Peng|last6=Cao|first6=Yun|last7=Rao|first7=Hui-Lan|last8=Lin|first8=Su-Xia|last9=Cai|first9=Mu-Yan|date=2015-09|title=Pseudoepitheliomatous hyperplasia mimicking invasive squamous cell carcinoma in extranodal natural killer/T-cell lymphoma: a report of 34 cases|url=https://pubmed.ncbi.nlm.nih.gov/25619876|journal=Histopathology|volume=67|issue=3|pages=404–409|doi=10.1111/his.12656|issn=1365-2559|pmid=25619876}}</ref><ref>{{Cite journal|last=Xiang|first=Chun-Xiang|last2=Chen|first2=Zi-Hang|last3=Zhao|first3=Sha|last4=Gao|first4=Li-Min|last5=Tao|first5=Qing|last6=Zuo|first6=Zhuo|last7=Liu|first7=Xiao-Yu|last8=Liu|first8=Wei-Ping|date=2019-07|title=Laryngeal Extranodal Nasal-type Natural Killer/T-cell Lymphoma: A Clinicopathologic Study of 31 Cases in China|url=https://pubmed.ncbi.nlm.nih.gov/31045893|journal=The American Journal of Surgical Pathology|volume=43|issue=7|pages=995–1004|doi=10.1097/PAS.0000000000001266|issn=1532-0979|pmid=31045893}}</ref>.
 +
 
 +
 
 +
'''***Amanda, do you know if we have any good cases we could scan and add photos of?'''
  
 
==Immunophenotype==
 
==Immunophenotype==
  
Put your text here and fill in the table <span style="color:#0070C0">(''Instruction: Can include references in the table'') </span>
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The majority of cases are positive for cytoplasmic CD3ε, CD2, granzyme B, and TIA-1. Most ENKTLs are of NK-lineage and express CD56. Cases of T-lineage express T-cell receptor (TCR) and show clonal TCR gene rearrangements. All cases are EBV positive by in situ hybridization for Epstein-Barr virus-encoded small RNA (EBER). Other markers that may be expressed include HLA-DR, CD25, pSTAT3, CXCL13, IRF4/MUM1, CD16, Fas, FasL, MATK, and CD30<ref>{{Cite journal|last=Li|first=Shaoying|last2=Feng|first2=Xiaoli|last3=Li|first3=Ting|last4=Zhang|first4=Shuang|last5=Zuo|first5=Zhuang|last6=Lin|first6=Pei|last7=Konoplev|first7=Sergej|last8=Bueso-Ramos|first8=Carlos E.|last9=Vega|first9=Francisco|date=2013-01|title=Extranodal NK/T-cell lymphoma, nasal type: a report of 73 cases at MD Anderson Cancer Center|url=https://pubmed.ncbi.nlm.nih.gov/23232851|journal=The American Journal of Surgical Pathology|volume=37|issue=1|pages=14–23|doi=10.1097/PAS.0b013e31826731b5|issn=1532-0979|pmid=23232851}}</ref><ref>{{Cite journal|last=Jhuang|first=Jie-Yang|last2=Chang|first2=Sheng-Tsung|last3=Weng|first3=Shih-Feng|last4=Pan|first4=Shien-Tung|last5=Chu|first5=Pei-Yi|last6=Hsieh|first6=Pin-Pen|last7=Wei|first7=Chih-Hsin|last8=Chou|first8=Shih-Cheng|last9=Koo|first9=Chiew-Loon|date=2015-02|title=Extranodal natural killer/T-cell lymphoma, nasal type in Taiwan: a relatively higher frequency of T-cell lineage and poor survival for extranasal tumors|url=https://pubmed.ncbi.nlm.nih.gov/25554090|journal=Human Pathology|volume=46|issue=2|pages=313–321|doi=10.1016/j.humpath.2014.11.008|issn=1532-8392|pmid=25554090}}</ref><ref>{{Cite journal|last=Pongpruttipan|first=Tawatchai|last2=Sukpanichnant|first2=Sanya|last3=Assanasen|first3=Thamathorn|last4=Wannakrairot|first4=Pongsak|last5=Boonsakan|first5=Paisarn|last6=Kanoksil|first6=Wasana|last7=Kayasut|first7=Kanita|last8=Mitarnun|first8=Winyou|last9=Khuhapinant|first9=Archrob|date=2012-04|title=Extranodal NK/T-cell lymphoma, nasal type, includes cases of natural killer cell and αβ, γδ, and αβ/γδ T-cell origin: a comprehensive clinicopathologic and phenotypic study|url=https://pubmed.ncbi.nlm.nih.gov/22314189|journal=The American Journal of Surgical Pathology|volume=36|issue=4|pages=481–499|doi=10.1097/PAS.0b013e31824433d8|issn=1532-0979|pmid=22314189}}</ref><ref>{{Cite journal|last=Jaffe|first=E. S.|last2=Chan|first2=J. K.|last3=Su|first3=I. J.|last4=Frizzera|first4=G.|last5=Mori|first5=S.|last6=Feller|first6=A. C.|last7=Ho|first7=F. C.|date=1996-01|title=Report of the Workshop on Nasal and Related Extranodal Angiocentric T/Natural Killer Cell Lymphomas. Definitions, differential diagnosis, and epidemiology|url=https://pubmed.ncbi.nlm.nih.gov/8540601|journal=The American Journal of Surgical Pathology|volume=20|issue=1|pages=103–111|doi=10.1097/00000478-199601000-00012|issn=0147-5185|pmid=8540601}}</ref><ref>{{Cite journal|last=Ohshima|first=K.|last2=Suzumiya|first2=J.|last3=Shimazaki|first3=K.|last4=Kato|first4=A.|last5=Tanaka|first5=T.|last6=Kanda|first6=M.|last7=Kikuchi|first7=M.|date=1997-11|title=Nasal T/NK cell lymphomas commonly express perforin and Fas ligand: important mediators of tissue damage|url=https://pubmed.ncbi.nlm.nih.gov/9416485|journal=Histopathology|volume=31|issue=5|pages=444–450|doi=10.1046/j.1365-2559.1997.2880887.x|issn=0309-0167|pmid=9416485}}</ref><ref>{{Cite journal|last=Takata|first=Katsuyoshi|last2=Hong|first2=Min-Eui|last3=Sitthinamsuwan|first3=Panitta|last4=Loong|first4=Florence|last5=Tan|first5=Soo-Yong|last6=Liau|first6=Jau-Yu|last7=Hsieh|first7=Pin-Pen|last8=Ng|first8=Siok-Bian|last9=Yang|first9=Sheau-Fang|date=2015-01|title=Primary cutaneous NK/T-cell lymphoma, nasal type and CD56-positive peripheral T-cell lymphoma: a cellular lineage and clinicopathologic study of 60 patients from Asia|url=https://pubmed.ncbi.nlm.nih.gov/25188863|journal=The American Journal of Surgical Pathology|volume=39|issue=1|pages=1–12|doi=10.1097/PAS.0000000000000312|issn=1532-0979|pmid=25188863}}</ref><ref>{{Cite journal|last=Kuo|first=Tseng-Tong|last2=Shih|first2=Lee-Yung|last3=Tsang|first3=Ngan-Ming|date=2004-10|title=Nasal NK/T cell lymphoma in Taiwan: a clinicopathologic study of 22 cases, with analysis of histologic subtypes, Epstein-Barr virus LMP-1 gene association, and treatment modalities|url=https://pubmed.ncbi.nlm.nih.gov/15494863|journal=International Journal of Surgical Pathology|volume=12|issue=4|pages=375–387|doi=10.1177/106689690401200410|issn=1066-8969|pmid=15494863}}</ref>.
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Finding!!Marker
 
!Finding!!Marker
 
|-
 
|-
|Positive (universal)||EXAMPLE CD1
+
|Positive (universal)||CD2, CD56, cytoplasmic CD3ε, cytotoxic markers (TIA-1, granzyme B, perforin)
 +
EBER / EBV
 
|-
 
|-
|Positive (subset)||EXAMPLE CD2
+
|Positive (subset)||TCR αβ/γδ, HLA-DR, CD25, pSTAT3, CXCL13, IRF4/MUM1, CD16, Fas, FasL, MATK, CD30
 
|-
 
|-
|Negative (universal)||EXAMPLE CD3
+
|Negative (universal)||CD4, CD8
 
|-
 
|-
|Negative (subset)||EXAMPLE CD4
+
|Negative (subset)||Surface CD3 (subset of T-cell lineage)<ref name=":0" />
 
|}
 
|}
  
 
==Chromosomal Rearrangements (Gene Fusions)==
 
==Chromosomal Rearrangements (Gene Fusions)==
  
Put your text here and fill in the table
+
No specific chromosomal translocation has been identified in ENKTL.
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE t(9;22)(q34;q11.2)||EXAMPLE 3'ABL1 / 5'BCR||EXAMPLE der(22)||EXAMPLE 20% (COSMIC)
+
|N/A||N/A||N/A||N/A
EXAMPLE 30% (add reference)
+
|N/A
|Yes
+
|N/A
|No
+
|N/A
|Yes
+
|N/A
|EXAMPLE
 
 
 
The t(9;22) is diagnostic of CML in the appropriate morphology and clinical context (add reference). This fusion is responsive to targeted therapy such as Imatinib (Gleevec) (add reference).
 
 
|}
 
|}
 
 
 
==Individual Region Genomic Gain / Loss / LOH==
 
==Individual Region Genomic Gain / Loss / LOH==
  
Put your text here and fill in the table <span style="color:#0070C0">(''Instructions: Includes aberrations not involving gene fusions. Can include references in the table. Can refer to CGC workgroup tables as linked on the homepage if applicable.'') </span>
+
ENKTL shows recurring deletion at 6q21-25<ref>{{Cite journal|last=Wong|first=K. F.|last2=Chan|first2=J. K.|last3=Kwong|first3=Y. L.|date=1997-09|title=Identification of del(6)(q21q25) as a recurring chromosomal abnormality in putative NK cell lymphoma/leukaemia|url=https://pubmed.ncbi.nlm.nih.gov/9326190|journal=British Journal of Haematology|volume=98|issue=4|pages=922–926|doi=10.1046/j.1365-2141.1997.3223139.x|issn=0007-1048|pmid=9326190}}</ref><ref>{{Cite journal|last=Ohshima|first=Koichi|last2=Haraokaa|first2=Seiji|last3=Ishihara|first3=Shigehiko|last4=Ohgami|first4=Akiko|last5=Yoshioka|first5=Shingo|last6=Suzumiya|first6=Junji|last7=Kikuchi|first7=Masahiro|date=2002-02|title=Analysis of chromosome 6q deletion in EBV-associated NK cell leukaemia/lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/11999560|journal=Leukemia & Lymphoma|volume=43|issue=2|pages=293–300|doi=10.1080/10428190290006062|issn=1042-8194|pmid=11999560}}</ref>.
 +
 
 +
Other less common chromosomal alterations include gain of 1p, 2q, 6p, 10q, 11q, 12q, 13q, 17q, 19p, 20q, and Xp; and loss of 1p36, 2p16, 4q12, 4q31-32, 5p14, 5q34-35, 6q13-14, 6q16-27, 11q22-23, 12q, 13q12-14, 13q14-34, 17p13, and entire chromosome X<ref>{{Cite journal|last=Nakashima|first=Yasuhiro|last2=Tagawa|first2=Hiroyuki|last3=Suzuki|first3=Ritsuro|last4=Karnan|first4=Sivasundaram|last5=Karube|first5=Kennosuke|last6=Ohshima|first6=Koichi|last7=Muta|first7=Koichiro|last8=Nawata|first8=Hajime|last9=Morishima|first9=Yasuo|date=2005-11|title=Genome-wide array-based comparative genomic hybridization of natural killer cell lymphoma/leukemia: different genomic alteration patterns of aggressive NK-cell leukemia and extranodal Nk/T-cell lymphoma, nasal type|url=https://pubmed.ncbi.nlm.nih.gov/16049916|journal=Genes, Chromosomes & Cancer|volume=44|issue=3|pages=247–255|doi=10.1002/gcc.20245|issn=1045-2257|pmid=16049916}}</ref><ref>{{Cite journal|last=Siu|first=L. L.|last2=Chan|first2=V.|last3=Chan|first3=J. K.|last4=Wong|first4=K. F.|last5=Liang|first5=R.|last6=Kwong|first6=Y. L.|date=2000-12|title=Consistent patterns of allelic loss in natural killer cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/11106552|journal=The American Journal of Pathology|volume=157|issue=6|pages=1803–1809|doi=10.1016/S0002-9440(10)64818-3|issn=0002-9440|pmc=1885756|pmid=11106552}}</ref><ref>{{Cite journal|last=Siu|first=L. L.|last2=Wong|first2=K. F.|last3=Chan|first3=J. K.|last4=Kwong|first4=Y. L.|date=1999-11|title=Comparative genomic hybridization analysis of natural killer cell lymphoma/leukemia. Recognition of consistent patterns of genetic alterations|url=https://pubmed.ncbi.nlm.nih.gov/10550295|journal=The American Journal of Pathology|volume=155|issue=5|pages=1419–1425|doi=10.1016/S0002-9440(10)65454-5|issn=0002-9440|pmc=1866965|pmid=10550295}}</ref><ref>{{Cite journal|last=Wong|first=K. F.|last2=Zhang|first2=Y. M.|last3=Chan|first3=J. K.|date=1999-07|title=Cytogenetic abnormalities in natural killer cell lymphoma/leukaemia--is there a consistent pattern?|url=https://pubmed.ncbi.nlm.nih.gov/10439361|journal=Leukemia & Lymphoma|volume=34|issue=3-4|pages=241–250|doi=10.3109/10428199909050949|issn=1042-8194|pmid=10439361}}</ref><ref>{{Cite journal|last=Ko|first=Y. H.|last2=Choi|first2=K. E.|last3=Han|first3=J. H.|last4=Kim|first4=J. M.|last5=Ree|first5=H. J.|date=2001-04-15|title=Comparative genomic hybridization study of nasal-type NK/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/11309817|journal=Cytometry|volume=46|issue=2|pages=85–91|doi=10.1002/cyto.1069|issn=0196-4763|pmid=11309817}}</ref>.
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE
+
|6
 
+
|Loss
7
+
|
|EXAMPLE Loss
+
|6q21-25
|EXAMPLE
+
|Unknown
 
+
|Unknown
chr7:1- 159,335,973 [hg38]
+
|Unknown
|EXAMPLE
+
|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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chr7
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|Yes
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|Yes
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|No
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|
|EXAMPLE
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|
 
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|
Presence of monosomy 7 (or 7q deletion) is sufficient for a diagnosis of AML with MDS-related changes when there is ≥20% blasts and no prior therapy (add reference).  Monosomy 7/7q deletion is associated with a poor prognosis in AML (add reference).
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|-
 
|EXAMPLE
 
|EXAMPLE
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==Characteristic Chromosomal Patterns==
 
==Characteristic Chromosomal Patterns==
  
Put your text here <span style="color:#0070C0">(''EXAMPLE PATTERNS: hyperdiploid; gain of odd number chromosomes including typically chromosome 1, 3, 5, 7, 11, and 17; co-deletion of 1p and 19q; complex karyotypes without characteristic genetic findings; chromothripsis'')</span>
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'''***Characteristic?'''
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE
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|Isochromosome 6p<ref>{{Cite journal|last=Tien|first=H. F.|last2=Su|first2=I. J.|last3=Tang|first3=J. L.|last4=Liu|first4=M. C.|last5=Lee|first5=F. Y.|last6=Chen|first6=Y. C.|last7=Chuang|first7=S. M.|date=1997-06|title=Clonal chromosomal abnormalities as direct evidence for clonality in nasal T/natural killer cell lymphomas|url=https://pubmed.ncbi.nlm.nih.gov/9207410|journal=British Journal of Haematology|volume=97|issue=3|pages=621–625|doi=10.1046/j.1365-2141.1997.752711.x|issn=0007-1048|pmid=9207410}}</ref>
 
+
|Unknown
Co-deletion of 1p and 18q
+
|Unknown
|Yes
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|Unknown
|No
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|N/A
|No
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|-
|EXAMPLE:
+
|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>
 
+
|Unknown
See chromosomal rearrangements table as this pattern is due to an unbalanced derivative translocation associated with oligodendroglioma (add reference).
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|Unknown
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|Unknown
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|N/A
 
|}
 
|}
 
==Gene Mutations (SNV / INDEL)==
 
==Gene Mutations (SNV / INDEL)==
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!Therapeutic Significance (Yes, No or Unknown)
 
!Therapeutic Significance (Yes, No or Unknown)
 
!Notes
 
!Notes
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|-
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|''JAK3''<ref name=":10">{{Cite journal|last=Koo|first=Ghee Chong|last2=Tan|first2=Soo Yong|last3=Tang|first3=Tiffany|last4=Poon|first4=Song Ling|last5=Allen|first5=George E.|last6=Tan|first6=Leonard|last7=Chong|first7=Soo Ching|last8=Ong|first8=Whee Sze|last9=Tay|first9=Kevin|date=2012-07|title=Janus kinase 3-activating mutations identified in natural killer/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/22705984|journal=Cancer Discovery|volume=2|issue=7|pages=591–597|doi=10.1158/2159-8290.CD-12-0028|issn=2159-8290|pmid=22705984}}</ref><ref>{{Cite journal|last=Bouchekioua|first=A.|last2=Scourzic|first2=L.|last3=de Wever|first3=O.|last4=Zhang|first4=Y.|last5=Cervera|first5=P.|last6=Aline-Fardin|first6=A.|last7=Mercher|first7=T.|last8=Gaulard|first8=P.|last9=Nyga|first9=R.|date=2014-02|title=JAK3 deregulation by activating mutations confers invasive growth advantage in extranodal nasal-type natural killer cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/23689514|journal=Leukemia|volume=28|issue=2|pages=338–348|doi=10.1038/leu.2013.157|issn=1476-5551|pmid=23689514}}</ref>
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|Oncogene
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|Pan-JAK and selective JAK3 inhibitors have been suggested as potential therapeutic options<ref name=":10" /><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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|''STAT3''<ref name=":2">{{Cite journal|last=Jiang|first=Lu|last2=Gu|first2=Zhao-Hui|last3=Yan|first3=Zi-Xun|last4=Zhao|first4=Xia|last5=Xie|first5=Yin-Yin|last6=Zhang|first6=Zi-Guan|last7=Pan|first7=Chun-Ming|last8=Hu|first8=Yuan|last9=Cai|first9=Chang-Ping|date=2015-09|title=Exome sequencing identifies somatic mutations of DDX3X in natural killer/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/26192917|journal=Nature Genetics|volume=47|issue=9|pages=1061–1066|doi=10.1038/ng.3358|issn=1546-1718|pmid=26192917}}</ref><ref name=":3">{{Cite journal|last=Küçük|first=Can|last2=Jiang|first2=Bei|last3=Hu|first3=Xiaozhou|last4=Zhang|first4=Wenyan|last5=Chan|first5=John K. C.|last6=Xiao|first6=Wenming|last7=Lack|first7=Nathan|last8=Alkan|first8=Can|last9=Williams|first9=John C.|date=2015-01-14|title=Activating mutations of STAT5B and STAT3 in lymphomas derived from γδ-T or NK cells|url=https://pubmed.ncbi.nlm.nih.gov/25586472|journal=Nature Communications|volume=6|pages=6025|doi=10.1038/ncomms7025|issn=2041-1723|pmc=7743911|pmid=25586472}}</ref><ref name=":4">{{Cite journal|last=Lee|first=Seungbok|last2=Park|first2=Ha Young|last3=Kang|first3=So Young|last4=Kim|first4=Seok Jin|last5=Hwang|first5=Jinha|last6=Lee|first6=Seungho|last7=Kwak|first7=Soo Heon|last8=Park|first8=Kyong Soo|last9=Yoo|first9=Hae Yong|date=2015-07-10|title=Genetic alterations of JAK/STAT cascade and histone modification in extranodal NK/T-cell lymphoma nasal type|url=https://pubmed.ncbi.nlm.nih.gov/25980440|journal=Oncotarget|volume=6|issue=19|pages=17764–17776|doi=10.18632/oncotarget.3776|issn=1949-2553|pmc=4627344|pmid=25980440}}</ref>
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|STAT3 inhibitor may have potential therapeutic benefit in patients with STAT3 activating mutation<ref>{{Cite journal|last=Wang|first=Yali|last2=Zhou|first2=Wenbo|last3=Chen|first3=Jianfeng|last4=Chen|first4=Jinghong|last5=Deng|first5=Peng|last6=Chen|first6=Huang|last7=Sun|first7=Yichen|last8=Yu|first8=Zhaoliang|last9=Pang|first9=Diwen|date=2023-08|title=Preclinical characterization of WB737, a potent and selective STAT3 inhibitor, in natural killer/T-cell lymphoma|url=https://pubmed.ncbi.nlm.nih.gov/37334274|journal=MedComm|volume=4|issue=4|pages=e284|doi=10.1002/mco2.284|issn=2688-2663|pmc=PMC10274570|pmid=37334274}}</ref>.
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|''STAT5B''<ref name=":2" /><ref name=":3" />
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|''PTPRK''<ref name=":1" />
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|Other (acts on JAK/STAT pathway; underexpression leads to STAT3 activation<ref name=":1" />)
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|''KIT''<ref name=":1" />
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|Oncogene
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|''CTNNB1''<ref name=":1" />
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|Oncogene
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|-
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|''TP53''<ref name=":2" />
 +
|Tumor suppressor gene
 +
|24-62%<ref name=":11">{{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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|Yes, associated with advanced stage disease<ref name=":11" />.
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|''MGA''<ref name=":2" />
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|Tumor suppressor gene
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|''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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|Tumor suppressor gene
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|
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|
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|-
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|''ATG5''<ref name=":9" />
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|Tumor suppressor gene
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|''AIM1''<ref name=":9" />
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|Tumor suppressor gene
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|-
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|''FOXO3''<ref name=":9" /><ref name=":7" />
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|Tumor suppressor gene
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|
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|
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|
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|
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|
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|-
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|''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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|Tumor suppressor gene
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|
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|-
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|''RAS''<ref name=":8" />
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|Oncogene
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|-
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|''MYC''
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|Oncogene
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|-
 
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|EXAMPLE: TP53; Variable LOF mutations
 
|EXAMPLE: TP53; Variable LOF mutations
Line 201: Line 384:
 
==Epigenomic Alterations==
 
==Epigenomic Alterations==
  
Put your text here
+
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 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" />.
  
 
==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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|''JAK3'', ''STAT3'', and ''STAT5B''; Activating mutations
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|JAK/STAT pathway
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|Increased cell growth and proliferation
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|-
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|-
 
|-
 
|EXAMPLE: BRAF and MAP2K1; Activating mutations
 
|EXAMPLE: BRAF and MAP2K1; Activating mutations
Line 239: Line 432:
  
 
==References==
 
==References==
(use the "Cite" icon at the top of the page) <span style="color:#0070C0">(''Instructions: Add each reference into the text above by clicking on where you want to insert the reference, selecting the “Cite” icon at the top of the page, and using the “Automatic” tab option to search such as by PMID to select the reference to insert. The reference list in this section will be automatically generated and sorted.''</span> <span style="color:#0070C0">''If a PMID is not available, such as for a book, please use the “Cite” icon, select “Manual” and then “Basic Form”, and include the entire reference''</span><span style="color:#0070C0">''.''</span><span style="color:#0070C0">) </span> <references />
+
<references />
 
 
'''EXAMPLE Book'''
 
 
 
#Arber DA, et al., (2017). Acute myeloid leukaemia with recurrent genetic abnormalities, 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. IARC Press: Lyon, France, p129-171.
 
  
 
==Notes==
 
==Notes==
 
<nowiki>*</nowiki>Primary authors will typically be those that initially create and complete the content of a page.  If a subsequent user modifies the content and feels the effort put forth is of high enough significance to warrant listing in the authorship section, please contact the CCGA coordinators (contact information provided on the homepage).  Additional global feedback or concerns are also welcome.
 
<nowiki>*</nowiki>Primary authors will typically be those that initially create and complete the content of a page.  If a subsequent user modifies the content and feels the effort put forth is of high enough significance to warrant listing in the authorship section, please contact the CCGA coordinators (contact information provided on the homepage).  Additional global feedback or concerns are also welcome.
 
<nowiki>*</nowiki>''Citation of this Page'': “Extranodal NK/T-cell lymphoma”. Compendium of Cancer Genome Aberrations (CCGA), Cancer Genomics Consortium (CGC), updated {{REVISIONMONTH}}/{{REVISIONDAY}}/{{REVISIONYEAR}}, <nowiki>https://ccga.io/index.php/HAEM5:Extranodal_NK/T-cell_lymphoma</nowiki>.
 
<nowiki>*</nowiki>''Citation of this Page'': “Extranodal NK/T-cell lymphoma”. Compendium of Cancer Genome Aberrations (CCGA), Cancer Genomics Consortium (CGC), updated {{REVISIONMONTH}}/{{REVISIONDAY}}/{{REVISIONYEAR}}, <nowiki>https://ccga.io/index.php/HAEM5:Extranodal_NK/T-cell_lymphoma</nowiki>.
[[Category:HAEM5]][[Category:DISEASE]][[Category:Diseases E]]
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[[Category:HAEM5]]
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[[Category:DISEASE]]
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[[Category:Diseases E]]

Latest revision as of 16:43, 21 June 2024


Haematolymphoid Tumours (5th ed.)

(General Instructions – The main focus of these pages is the clinically significant genetic alterations in each disease type. Use HUGO-approved gene names and symbols (italicized when appropriate), HGVS-based nomenclature for variants, as well as generic names of drugs and testing platforms or assays if applicable. Please complete tables whenever possible and do not delete them (add N/A if not applicable in the table and delete the examples). Please do not delete or alter the section headings. The use of bullet points alongside short blocks of text rather than only large paragraphs is encouraged. Additional instructions below in italicized blue text should not be included in the final page content. Please also see Author_Instructions and FAQs as well as contact your Associate Editor or Technical Support)

Primary Author(s)*

Teodora Popa, MD, Queen's University

Amanda Xu, MD/MSc, Queen's University

Cancer Category / Type

Mature T-cell and NK-cell neoplasms

Cancer Sub-Classification / Subtype

EBV-positive T-cell and NK-cell neoplasms

Definition / Description of Disease

Extranodal NK/T-cell lymphoma (ENKTL) is a distinct entity in the 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[1].

  • ENKTL is a lymphoma of NK or T-cell lineage strongly associated with Epstein-Barr virus[2].
  • It is a destructive angiocentric disease characterized by vascular destruction and necrosis[3].
  • It can be clinically divided into nasal and non-nasal types, the latter most often occurring in the skin and intestinal tract[1][2].
  • The lineage (NK or T-cell) has no clinical significance[4].
  • The differential diagnosis includes sinonasal carcinomas and other lymphomas of the nasal cavity, such as diffuse large B-cell lymphoma[5].

Synonyms / Terminology

Extranodal NK/T-cell lymphoma, nasal type; EBV-positive extranodal NK/T-cell lymphoma; angiocentric lymphoma (not recommended); lethal midline granuloma (historical)

Epidemiology / Prevalence

ENKTL is most prevalent in East Asia and Latin America. It represents less than 1% of non-Hodgkin lymphomas in the United States, with the highest incidence among Asian Pacific Islanders and Hispanic populations[6].

Clinical Features

Common clinical presentations of nasal-type ENKTL include nasal mass, obstruction, and bleeding. Patients with abdominal involvement may present with abdominal pain, gastrointestinal (GI) bleed, or perforation[7]. The presence of B symptoms is associated with higher clinical stage[8].

Signs and Symptoms Nasal mass, nasal obstruction, nasal bleeding

Hoarseness, dysphagia, halitosis, airway obstruction, dysphonia

Abdominal pain, GI bleeding, bowel perforation

B symptoms (fever, weight loss, night sweats)

Laboratory Findings No specific findings

Cytopenias

Sites of Involvement

Most cases of ENKTL are nasal type, meaning they involve the upper aerodigestive tract. Extranasal ENKTL may involve the skin, testis, and gastrointestinal tract[7]. Bone marrow involvement is uncommon[9].

Morphologic Features

  • Diffuse lymphomatous infiltrate composed of small, medium, or large and anaplastic cells (or a mix of small and large cells). The cells have irregularly folded nuclei and moderate pale cytoplasm.
  • Loss of mucosal glands.
  • Angiocentric and angiodestructive growth pattern.
  • Coagulative necrosis and apoptosis.
  • Mitotic figures.

Pitfalls:

  • Mucosal ulceration and superimposed inflammation can mimic an inflammatory process, particularly in less aggressive cases[10].
  • Pseudoepitheliomatous hyperplasia of the overlying mucosal epithelium can mimic squamous cell carcinoma[11][12].


***Amanda, do you know if we have any good cases we could scan and add photos of?

Immunophenotype

The majority of cases are positive for cytoplasmic CD3ε, CD2, granzyme B, and TIA-1. Most ENKTLs are of NK-lineage and express CD56. Cases of T-lineage express T-cell receptor (TCR) and show clonal TCR gene rearrangements. All cases are EBV positive by in situ hybridization for Epstein-Barr virus-encoded small RNA (EBER). Other markers that may be expressed include HLA-DR, CD25, pSTAT3, CXCL13, IRF4/MUM1, CD16, Fas, FasL, MATK, and CD30[13][14][15][16][17][18][19].

Finding Marker
Positive (universal) CD2, CD56, cytoplasmic CD3ε, cytotoxic markers (TIA-1, granzyme B, perforin)

EBER / EBV

Positive (subset) TCR αβ/γδ, HLA-DR, CD25, pSTAT3, CXCL13, IRF4/MUM1, CD16, Fas, FasL, MATK, CD30
Negative (universal) CD4, CD8
Negative (subset) Surface CD3 (subset of T-cell lineage)[7]

Chromosomal Rearrangements (Gene Fusions)

No specific chromosomal translocation has been identified in ENKTL.

Chromosomal Rearrangement Genes in Fusion (5’ or 3’ Segments) Pathogenic Derivative Prevalence Diagnostic Significance (Yes, No or Unknown) Prognostic Significance (Yes, No or Unknown) Therapeutic Significance (Yes, No or Unknown) Notes
N/A N/A N/A N/A N/A N/A N/A N/A

Individual Region Genomic Gain / Loss / LOH

ENKTL shows recurring deletion at 6q21-25[20][21].

Other less common chromosomal alterations include gain of 1p, 2q, 6p, 10q, 11q, 12q, 13q, 17q, 19p, 20q, and Xp; and loss of 1p36, 2p16, 4q12, 4q31-32, 5p14, 5q34-35, 6q13-14, 6q16-27, 11q22-23, 12q, 13q12-14, 13q14-34, 17p13, and entire chromosome X[22][23][24][25][26].

Chr # Gain / Loss / Amp / LOH Minimal Region Genomic Coordinates [Genome Build] Minimal Region Cytoband Diagnostic Significance (Yes, No or Unknown) Prognostic Significance (Yes, No or Unknown) Therapeutic Significance (Yes, No or Unknown) Notes
6 Loss 6q21-25 Unknown Unknown Unknown This locus harbours multiple candidate tumour suppressor genes including ATG5, AIM1, PRDM1, PTPRK, HACE1, and FOXO3[27][28][29].
EXAMPLE

8

EXAMPLE Gain EXAMPLE

chr8:1-145,138,636 [hg38]

EXAMPLE

chr8

No No No EXAMPLE

Common recurrent secondary finding for t(8;21) (add reference).

Characteristic Chromosomal Patterns

***Characteristic?

Chromosomal Pattern Diagnostic Significance (Yes, No or Unknown) Prognostic Significance (Yes, No or Unknown) Therapeutic Significance (Yes, No or Unknown) Notes
Isochromosome 6p[30] Unknown Unknown Unknown N/A
Isochromosome 7q[31] Unknown Unknown Unknown N/A

Gene Mutations (SNV / INDEL)

Put your text here and fill in the table (Instructions: This table is not meant to be an exhaustive list; please include only genes/alterations that are recurrent and common as well either disease defining and/or clinically significant. Can include references in the table. For clinical significance, denote associations with FDA-approved therapy (not an extensive list of applicable drugs) and NCCN or other national guidelines if applicable; Can also refer to CGC workgroup tables as linked on the homepage if applicable as well as any high impact papers or reviews of gene mutations in this entity.)

Gene; Genetic Alteration Presumed Mechanism (Tumor Suppressor Gene [TSG] / Oncogene / Other) Prevalence (COSMIC / TCGA / Other) Concomitant Mutations Mutually Exclusive Mutations Diagnostic Significance (Yes, No or Unknown) Prognostic Significance (Yes, No or Unknown) Therapeutic Significance (Yes, No or Unknown) Notes
JAK3[32][33] Oncogene Pan-JAK and selective JAK3 inhibitors have been suggested as potential therapeutic options[32][34].
STAT3[35][36][37] STAT3 inhibitor may have potential therapeutic benefit in patients with STAT3 activating mutation[38].
STAT5B[35][36]
PTPRK[29] Other (acts on JAK/STAT pathway; underexpression leads to STAT3 activation[29])
KIT[29] Oncogene
CTNNB1[29] Oncogene
TP53[35] Tumor suppressor gene 24-62%[39][40] Yes, associated with advanced stage disease[39].
MGA[35] Tumor suppressor gene
PRDM1[41][28][42] Tumor suppressor gene
ATG5[41] Tumor suppressor gene
AIM1[41] Tumor suppressor gene
FOXO3[41][28] Tumor suppressor gene
HACE1[41][43] Tumor suppressor gene
RAS[40] Oncogene
MYC Oncogene
EXAMPLE: TP53; Variable LOF mutations

EXAMPLE:

EGFR; Exon 20 mutations

EXAMPLE: BRAF; Activating mutations

EXAMPLE: TSG EXAMPLE: 20% (COSMIC)

EXAMPLE: 30% (add Reference)

EXAMPLE: IDH1 R123H EXAMPLE: EGFR amplification EXAMPLE:  Excludes hairy cell leukemia (HCL) (add reference).


Note: A more extensive list of mutations can be found in cBioportal (https://www.cbioportal.org/), COSMIC (https://cancer.sanger.ac.uk/cosmic), ICGC (https://dcc.icgc.org/) and/or other databases. When applicable, gene-specific pages within the CCGA site directly link to pertinent external content.

Epigenomic Alterations

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[35].

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[37].

Genes and Main Pathways Involved

Put your text here and fill in the table (Instructions: Can include references in the table.)

Gene; Genetic Alteration Pathway Pathophysiologic Outcome
JAK3, STAT3, and STAT5B; Activating mutations JAK/STAT pathway Increased cell growth and proliferation
EXAMPLE: BRAF and MAP2K1; Activating mutations EXAMPLE: MAPK signaling EXAMPLE: Increased cell growth and proliferation
EXAMPLE: CDKN2A; Inactivating mutations EXAMPLE: Cell cycle regulation EXAMPLE: Unregulated cell division
EXAMPLE:  KMT2C and ARID1A; Inactivating mutations EXAMPLE:  Histone modification, chromatin remodeling EXAMPLE:  Abnormal gene expression program

Genetic Diagnostic Testing Methods

Put your text here

Familial Forms

Put your text here (Instructions: Include associated hereditary conditions/syndromes that cause this entity or are caused by this entity.)

Additional Information

Put your text here

Links

Put your text placeholder here (or anywhere appropriate on the page) and use the "Link" icon at the top of the page (Instructions: Once you have a text placeholder entered to which you want to add a link, highlight that text, select the "Link" icon at the top of the page, and search the name of the internal page to which you want to link this text, or enter an external internet address including the "http://www." portion.)

References

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  3. Aviles, A.; et al. (1992). "Angiocentric T-cell lymphoma of the nose, paranasal sinuses and hard palate". Hematological Oncology. 10 (3–4): 141–147. doi:10.1002/hon.2900100303. ISSN 0278-0232. PMID 1398510.
  4. Wang, Hua; et al. (2021-09). "NK-/T-cell lymphomas". Leukemia. 35 (9): 2460–2468. doi:10.1038/s41375-021-01313-2. ISSN 1476-5551. PMC 8410593 Check |pmc= value (help). PMID 34117356 Check |pmid= value (help). Check date values in: |date= (help)
  5. Steele, Toby O.; et al. (2016-09). "Lymphoma of the nasal cavity and paranasal sinuses: A case series". American Journal of Rhinology & Allergy. 30 (5): 335–339. doi:10.2500/ajra.2016.30.4347. ISSN 1945-8932. PMID 27657899. Check date values in: |date= (help)
  6. Haverkos, Bradley M.; et al. (2016-12). "Extranodal NK/T-cell lymphoma, nasal type (ENKTL-NT): An update on epidemiology, clinical presentation, and natural history in North American and European cases". Current hematologic malignancy reports. 11 (6): 514–527. doi:10.1007/s11899-016-0355-9. ISSN 1558-8211. PMC 5199232. PMID 27778143. Check date values in: |date= (help)
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  10. Devins, K., Schuster, S.J., Caponetti, G.C. et al. Rare case of low-grade extranodal NK/T-cell lymphoma, nasal type, arising in the setting of chronic rhinosinusitis and harboring a novel N-terminal KIT mutation. Diagn Pathol 13, 92 (2018). https://doi.org/10.1186/s13000-018-0765-1
  11. Ling, Yi-Hong; et al. (2015-09). "Pseudoepitheliomatous hyperplasia mimicking invasive squamous cell carcinoma in extranodal natural killer/T-cell lymphoma: a report of 34 cases". Histopathology. 67 (3): 404–409. doi:10.1111/his.12656. ISSN 1365-2559. PMID 25619876. Check date values in: |date= (help)
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  20. Wong, K. F.; et al. (1997-09). "Identification of del(6)(q21q25) as a recurring chromosomal abnormality in putative NK cell lymphoma/leukaemia". British Journal of Haematology. 98 (4): 922–926. doi:10.1046/j.1365-2141.1997.3223139.x. ISSN 0007-1048. PMID 9326190. Check date values in: |date= (help)
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Notes

*Primary authors will typically be those that initially create and complete the content of a page.  If a subsequent user modifies the content and feels the effort put forth is of high enough significance to warrant listing in the authorship section, please contact the CCGA coordinators (contact information provided on the homepage).  Additional global feedback or concerns are also welcome. *Citation of this Page: “Extranodal NK/T-cell lymphoma”. Compendium of Cancer Genome Aberrations (CCGA), Cancer Genomics Consortium (CGC), updated 06/21/2024, https://ccga.io/index.php/HAEM5:Extranodal_NK/T-cell_lymphoma.