HAEM5:Aggressive NK-cell leukaemia: Difference between revisions
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{{DISPLAYTITLE:Aggressive NK-cell leukaemia}} | {{DISPLAYTITLE:Aggressive NK-cell leukaemia}} | ||
[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (WHO Classification, 5th ed.)]] | [[HAEM5:Table_of_Contents|Haematolymphoid Tumours (WHO Classification, 5th ed.)]] | ||
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Case Western Reserve University, Cleveland, OH | Case Western Reserve University, Cleveland, OH | ||
==WHO Classification of Disease== | ==WHO Classification of Disease== | ||
Aggressive NK-cell Leukaemia | Aggressive NK-cell Leukaemia | ||
== | ==Related Terminology== | ||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
|Acceptable | |Acceptable | ||
| | |Aggressive NK-cell leukaemia/lymphoma | ||
|- | |- | ||
|Not Recommended | |Not Recommended | ||
| | |NK-large granular lymphocyte leukaemia; aggressive large granular lymphocyte leukaemia | ||
|} | |} | ||
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{| class="wikitable sortable" | {| class="wikitable sortable" | ||
|- | |- | ||
!Chr #!! | !Chr #!!Gain, Loss, Amp, LOH!!Minimal Region Cytoband and/or Genomic Coordinates [Genome Build; Size]!!Relevant Gene(s) | ||
! | !Diagnostic, Prognostic, and Therapeutic Significance - D, P, T | ||
! | !Established Clinical Significance Per Guidelines - Yes or No (Source) | ||
! | !Clinical Relevance Details/Other Notes | ||
|- | |- | ||
|<span class="blue-text">EXAMPLE:</span> | |<span class="blue-text">EXAMPLE:</span> | ||
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|} | |} | ||
There have been a few chromosomal abnormalities associated with aggressive NK-cell leukaemia as listed below, however, the specificity along with prognostic and therapeutic significance is unknown.<ref name=":2" /><ref name=":1" /><ref name=":0" /> | There have been a few chromosomal abnormalities associated with aggressive NK-cell leukaemia as listed below, however, the specificity along with prognostic and therapeutic significance is unknown.<ref name=":2">{{Cite journal|last=El Hussein|first=Siba|last2=Medeiros|first2=L. Jeffrey|last3=Khoury|first3=Joseph D.|date=10 09, 2020|title=Aggressive NK Cell Leukemia: Current State of the Art|url=https://pubmed.ncbi.nlm.nih.gov/33050313|journal=Cancers|volume=12|issue=10|doi=10.3390/cancers12102900|issn=2072-6694|pmc=7600035|pmid=33050313}}</ref><ref name=":1">Chan, JKC et al., (2017). Aggressive NK-cell leukaemia, 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, p353-354.</ref><ref name=":0">{{Cite journal|last=El Hussein|first=Siba|last2=Patel|first2=Keyur P.|last3=Fang|first3=Hong|last4=Thakral|first4=Beenu|last5=Loghavi|first5=Sanam|last6=Kanagal-Shamanna|first6=Rashmi|last7=Konoplev|first7=Sergej|last8=Jabbour|first8=Elias J.|last9=Medeiros|first9=L. Jeffrey|date=09 2020|title=Genomic and Immunophenotypic Landscape of Aggressive NK-Cell Leukemia|url=https://pubmed.ncbi.nlm.nih.gov/32590457|journal=The American Journal of Surgical Pathology|volume=44|issue=9|pages=1235–1243|doi=10.1097/PAS.0000000000001518|issn=1532-0979|pmid=32590457}}</ref> | ||
{| class="wikitable sortable" | {| class="wikitable sortable" | ||
| Line 259: | Line 168: | ||
!Chromosomal Pattern | !Chromosomal Pattern | ||
!Molecular Pathogenesis | !Molecular Pathogenesis | ||
! | !Prevalence - | ||
Common >20%, Recurrent 5-20% or Rare <5% (Disease) | |||
! | !Diagnostic, Prognostic, and Therapeutic Significance - D, P, T | ||
! | !Established Clinical Significance Per Guidelines - Yes or No (Source) | ||
! | !Clinical Relevance Details/Other Notes | ||
|- | |- | ||
|<span class="blue-text">EXAMPLE:</span> | |<span class="blue-text">EXAMPLE:</span> | ||
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{| class="wikitable sortable" | {| class="wikitable sortable" | ||
|- | |- | ||
!Gene!! | !Gene!!Genetic Alteration!!Tumor Suppressor Gene, Oncogene, Other!!Prevalence - | ||
Common >20%, Recurrent 5-20% or Rare <5% (Disease) | |||
! | !Diagnostic, Prognostic, and Therapeutic Significance - D, P, T | ||
! | !Established Clinical Significance Per Guidelines - Yes or No (Source) | ||
! | !Clinical Relevance Details/Other Notes | ||
|- | |- | ||
|<span class="blue-text">EXAMPLE:</span>''EGFR'' | |<span class="blue-text">EXAMPLE:</span>''EGFR'' | ||
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{| class="wikitable sortable" | {| class="wikitable sortable" | ||
|- | |- | ||
!Gene; Genetic Alteration!! | !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) | !Prognostic Significance (Yes, No or Unknown) | ||
!Therapeutic Significance (Yes, No or Unknown) | !Therapeutic Significance (Yes, No or Unknown) | ||
| Line 423: | Line 332: | ||
|?? | |?? | ||
|} | |} | ||
==Genetic Diagnostic Testing Methods== | |||
Foundation of diagnosis based on morphology with immunophenotyping via flow cytometry +/- immunohistochemistry.<ref name=":0" /> | |||
==Familial Forms== | |||
N/A | |||
==Additional Information== | |||
This disease is <u>defined/characterized</u> as detailed below: | |||
*Aggressive NK-cell leukaemia is a malignant proliferation of NK-cells, often associated with EBV infection, however, a subset of cases could be EBV negative. The disease has an extremely aggressive clinical course with poor response to chemotherapy, frequent relapses noted in patient who have had previously achieved complete remission (+/- bone marrow transplantation). | |||
The <u>epidemiology/prevalence</u> of this disease is detailed below: | |||
*Aggressive NK-cell leukaemia impacts young to middle-aged adults with peak incidence during 3rd and 5th decades of life (Mean age: 40 years).<ref name=":1" /> There is no gender predilection and most prevalent in Asia, Central and South America.<ref name=":0" /> Median survival is very short, <2 months. EBV-negative cases tend to occur in older patients, with no significant difference in Asian vs. non-Asian populations.<ref name=":2" /> EBV-negative cases may occur de novo or transform from chronic lymphoproliferative disorder of NK cells.'''''<ref name=":4">{{Cite journal|last=Kim|first=Wook Youn|last2=Montes-Mojarro|first2=Ivonne A.|last3=Fend|first3=Falko|last4=Quintanilla-Martinez|first4=Leticia|date=2019|title=Epstein-Barr Virus-Associated T and NK-Cell Lymphoproliferative Diseases|url=https://pubmed.ncbi.nlm.nih.gov/30931288|journal=Frontiers in Pediatrics|volume=7|pages=71|doi=10.3389/fped.2019.00071|issn=2296-2360|pmc=6428722|pmid=30931288}}</ref>''''' | |||
< | The <u>clinical features</u> of this disease are detailed below: | ||
*Most common presentation is with constitutional symptoms and frequently associated hepatosplenomegaly is noted on physical examination.<ref name=":1" /><ref name=":4" /> EBV-negative cases may occur ''de novo'' or transform from chronic lymphoproliferative disorder of NK cells. | |||
Signs and symptoms - Constitutional symptoms (weight loss, fever, night sweats); Hepatosplenomegaly common; Frequently complicated by multiorgan failure, coagulopathy and haemophagocytic syndrome | |||
Laboratory findings - Markedly elevated serum lactate dehydrogenase (LDH) levels; Circulating FASL; Variable percentage of circulating leukemic cells; Anemia, neutropenia, thrombocytopenia | |||
< | The <u>sites of involvement</u> of this disease are detailed below: | ||
== | |||
*Peripheral blood, bone marrow, liver, spleen, and lymph nodes are frequently involved. Extranodal involvement sites are organs including skin, lungs, soft tissue and omentum has also been reported.<ref name=":5">{{Cite journal|last=Hue|first=Susan Swee-Shan|last2=Oon|first2=Ming Liang|last3=Wang|first3=Shi|last4=Tan|first4=Soo-Yong|last5=Ng|first5=Siok-Bian|date=2020-01|title=Epstein–Barr virus-associated T- and NK-cell lymphoproliferative diseases: an update and diagnostic approach|url=https://linkinghub.elsevier.com/retrieve/pii/S0031302519304210|journal=Pathology|language=en|volume=52|issue=1|pages=111–127|doi=10.1016/j.pathol.2019.09.011}}</ref> | |||
The <u>morphologic features</u> of this disease are detailed below: | |||
'''Peripheral Blood''' | |||
*Variable; May appear as: | |||
**Normal large granular lymphocytes or | |||
**Intermediate to large cells with atypical nuclei (enlarged, irregular folding, open chromatin or distinct nucleoli) and moderate pale or lightly basophilic cytoplasm containing fine, coarse or no azurophilic granules.<ref name=":1" /> | |||
'''Bone Marrow:''' | |||
*Interstitial or intrasinusoidal infiltrating pattern, which may be extensive, focal or subtle<ref name=":0" /> | |||
*May have interspersed reactive histiocytes with haemophagocytosis | |||
'''Tissue:''' | |||
*Diffuse or patchy destructive infiltrates | |||
*Monotonous medium sized cells | |||
*Round or highly irregular nuclei with condensed chromatin and small nucleoli | |||
*Frequently admixed apoptotic bodies | |||
*Necrosis common | |||
*+/- angioinvasion | |||
The <u>immunophenotype</u> of this disease is detailed below: | |||
*The leukaemic cells show demonstrate the following phenotypic expression.<ref name=":1" /><ref name=":0" /> | |||
Positive (universal) - CD2, CD3-epsilon, CD56, CD94, cytotoxic molecules (TIA1, Granzyme B, perforin A), FASL, c-MYC | |||
Positive (subset) - CD16 (75%), CD11b, EBER, p53, pSTAT3, PD-L1, BCL2 | |||
Negative (universal) - surface CD3, CD4, CD5, CD57 (usually), CD158a/b/e, TCR alpha/beta, TCR gamma/delta | |||
Negative (subset) - CD7, CD45 | |||
==Links== | ==Links== | ||
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[[HAEM5:Extranodal NK/T-cell lymphoma|Extranodal NK/T-cell lymphoma]] | [[HAEM5:Extranodal NK/T-cell lymphoma|Extranodal NK/T-cell lymphoma]] | ||
[[Hepatosplenic T-cell Lymphoma | [[HAEM5:Hepatosplenic T-cell lymphoma|Hepatosplenic T-cell Lymphoma]] | ||
[[ | [[HAEM5:NK-large granular lymphocytic leukaemia|NK-large Granular Lymphocytic Leukaemia]] | ||
==References== | ==References== | ||