Compendium of Cancer Genome Aberrations

HAEM5:Acute monocytic leukaemia: Difference between revisions

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<blockquote class='blockedit'>{{Box-round|title=Content Update To WHO 5th Edition Classification Is In Process; Content Below is Based on WHO 4th Edition Classification|This page was converted to the new template on 2023-12-07. The original page can be found at [[HAEM4:Acute Monoblastic and Monocytic Leukemia]].
<blockquote class="blockedit">{{Box-round|title=Content Update To WHO 5th Edition Classification Is In Process; Content Below is Based on WHO 4th Edition Classification|This page was converted to the new template on 2023-12-07. The original page can be found at [[HAEM4:Acute Monoblastic and Monocytic Leukemia]].


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Oregon Health & Science University, Portland, OR
Oregon Health & Science University, Portland, OR
__TOC__
==WHO Classification of Disease==
==WHO Classification of Disease==


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==Definition / Description of Disease==
==Related Terminology==
 
Acute monoblastic and monocytic leukemia are myeloid leukemias in which the peripheral blood or bone marrow has ≥20% blasts (including promonocytes) and in which ≥80% of the leukemic cells are of monocytic lineage (monoblasts, promonocytes and monocytes). Neutrophils may be noted (<20%). In acute monoblastic leukemia, most (≥80%) of the monocytic cells are monoblasts; while in acute monocytic leukemia, most of the monocytic cells are promonocytes or monocytes. In the 2016 revision to the World Health Organization (WHO) classification system, acute monoblastic and monocytic leukemia is a distinct entity within the section of [[HAEM4:Acute Myeloid Leukemia (AML), Not Otherwise Specified]]<ref>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. World Health Organization Classification of Tumours of Haematopoietic and Lymphoid Tissues, Revised 4th edition. IARC Press: Lyon, France, p160-161.</ref><ref name=":0">{{Cite journal|last=Arber|first=Daniel A.|last2=Orazi|first2=Attilio|last3=Hasserjian|first3=Robert|last4=Thiele|first4=Jürgen|last5=Borowitz|first5=Michael J.|last6=Le Beau|first6=Michelle M.|last7=Bloomfield|first7=Clara D.|last8=Cazzola|first8=Mario|last9=Vardiman|first9=James W.|date=2016|title=The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia|url=https://www.ncbi.nlm.nih.gov/pubmed/27069254|journal=Blood|volume=127|issue=20|pages=2391–2405|doi=10.1182/blood-2016-03-643544|issn=1528-0020|pmid=27069254}}</ref>. This entity does not meet the criteria for inclusion in any of the other AML groups (i.e. AML with Recurrent Genetic Abnormalities, AML with Myelodysplasia-Related Changes, or Therapy-Related Myeloid Neoplasms).
 
==Synonyms / Terminology==
 
Acute monoblastic leukemia; acute monocytic leukemia; French-American-British (FAB) classification M5, Monoblastic leukemia NOS
 
==Epidemiology / Prevalence==
 
Acute monoblastic leukemia:
 
*less than 5% of AML cases
*more common in young individuals
 
Acute monocytic leukemia:
 
*less than 5% of AML cases
*more common in adults; the median patient age is 49 years
*the male-to-female ratio is 1.8:1
 
==Clinical Features==
 
Put your text here and fill in the table <span style="color:#0070C0">(''Instruction: Can include references in the table. Do not delete table.'') </span>
{| class="wikitable"
|'''Signs and Symptoms'''
|<span class="blue-text">EXAMPLE:</span> Asymptomatic (incidental finding on complete blood counts)
 
<span class="blue-text">EXAMPLE:</span> B-symptoms (weight loss, fever, night sweats)
 
<span class="blue-text">EXAMPLE:</span> Fatigue
 
<span class="blue-text">EXAMPLE:</span> Lymphadenopathy (uncommon)
|-
|'''Laboratory Findings'''
|<span class="blue-text">EXAMPLE:</span> Cytopenias
 
<span class="blue-text">EXAMPLE:</span> Lymphocytosis (low level)
|}
 
 
<blockquote class='blockedit'>{{Box-round|title=v4:Clinical Features|The content below was from the old template. Please incorporate above.}}</blockquote>
 
*Common manifestations include extramedullary masses, lymphadenopathy, cutaneous and gingival infiltration, CNS involvement and presenting with bleeding disorders<ref name=":0" />
*May present with acute respiratory failure<ref>{{Cite journal|last=Azoulay|first=Elie|last2=Fieux|first2=Fabienne|last3=Moreau|first3=Delphine|last4=Thiery|first4=Guillaume|last5=Rousselot|first5=Philippe|last6=Parrot|first6=Antoine|last7=Le Gall|first7=Jean-Roger|last8=Dombret|first8=Hervé|last9=Schlemmer|first9=Benoît|date=2003|title=Acute monocytic leukemia presenting as acute respiratory failure|url=https://www.ncbi.nlm.nih.gov/pubmed/12574074|journal=American Journal of Respiratory and Critical Care Medicine|volume=167|issue=10|pages=1329–1333|doi=10.1164/rccm.200206-554OC|issn=1073-449X|pmid=12574074}}</ref>
 
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<center><span style="color:Maroon">'''End of V4 Section'''</span>
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==Sites of Involvement==
 
Bone marrow; extramedullary sites such as lymph nodes, skin, gingiva, and CNS.
 
==Morphologic Features==
 
*Monoblasts are large cells with abundant cytoplasm, which can be moderately to intensely basophillic, and round nuclei with delicate lacy chromatin and one or more predominant nucleoli; scattered azurophillic granuoles and vacuoles may be present.
*Promonocytes have a more irregular and delicately convoluted nuclear configuration and cytoplasm which is usually less basophillic and more granulated.
*Hemophagocytosis (erythrophagocytosis) may be observed, often associated with t(8;16)(p11.2;p13.3).
*The extramedullary lesion may be composed mainly of monoblasts, promocytes or both.
 
==Immunophenotype==
 
Cytochemistry
 
*Monoblast granules and monocytes are strongly positive for non-specific esterase and lysozyme in most cases
*Monoblasts are typically negative for myeloperoxidase (MPO), although promonocytes may have scattered positivity.
 
Often a complex immunophenotype with multiple blast populations including:
 
*immature blasts with CD34 (30% of cases) and/or KIT (CD117) expression
*populations with myeloid markers: CD13, CD33, CD15, CD65
*populations with at least two monocytic markers: CD4, CD14, CD11b, CD11c, CD64, CD36, CD68, and lysozyme
*most cases are positive for HLA-DR
*MPO can be expressed in acute monocytic leukemia and less often in monoblastic leukemia
 
{| class="wikitable sortable"
|-
!Finding!!Marker
|-
|Positive (universal)||<span class="blue-text">EXAMPLE:</span> CD1
|-
|Positive (subset)||<span class="blue-text">EXAMPLE:</span> CD2
|-
|Negative (universal)||<span class="blue-text">EXAMPLE:</span> CD3
|-
|Negative (subset)||<span class="blue-text">EXAMPLE:</span> CD4
|}


==WHO Essential and Desirable Genetic Diagnostic Criteria==
<span style="color:#0070C0">(''Instructions: The table will have the diagnostic criteria from the WHO book <u>autocompleted</u>; remove any <u>non</u>-genetics related criteria. If applicable, add text about other classification'' ''systems that define this entity and specify how the genetics-related criteria differ.'')</span>
{| class="wikitable"
|+
|WHO Essential Criteria (Genetics)*
|
|-
|WHO Desirable Criteria (Genetics)*
|
|-
|Other Classification
|
|}
<nowiki>*</nowiki>Note: These are only the genetic/genomic criteria. Additional diagnostic criteria can be found in the [https://tumourclassification.iarc.who.int/home <u>WHO Classification of Tumours</u>].
==Related Terminology==
<span style="color:#0070C0">(''Instructions: The table will have the related terminology from the WHO <u>autocompleted</u>.)''</span>
{| class="wikitable"
{| class="wikitable"
|+
|+
|Acceptable
|Acceptable
|
|Acute monoblastic leukaemia
|-
|-
|Not Recommended
|Not Recommended
|
|Acute myeloid leukaemia, M5; acute monoblastic leukaemia, M5a; acute monocytic leukaemia, M5b
|}
|}


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<blockquote class='blockedit'>{{Box-round|title=v4:Chromosomal Rearrangements (Gene Fusions)|The content below was from the old template. Please incorporate above.}}</blockquote>
<blockquote class="blockedit">{{Box-round|title=v4:Chromosomal Rearrangements (Gene Fusions)|The content below was from the old template. Please incorporate above.}}</blockquote>


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<blockquote class='blockedit'>{{Box-round|title=v4:Clinical Significance (Diagnosis, Prognosis and Therapeutic Implications).|Please incorporate this section into the relevant tables found in:
<blockquote class="blockedit">{{Box-round|title=v4:Clinical Significance (Diagnosis, Prognosis and Therapeutic Implications).|Please incorporate this section into the relevant tables found in:
* Chromosomal Rearrangements (Gene Fusions)
* Chromosomal Rearrangements (Gene Fusions)
* Individual Region Genomic Gain/Loss/LOH
* Individual Region Genomic Gain/Loss/LOH
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Diagnosis
Diagnosis


*The main differential diagnoses of acute monoblastic leukemia include: AML without maturation, AML with minimal differentiation, AML with t(9;11)(p21.3;q23.3), and acute megakaryoblastic leukemia (AMKL)<ref name=":0" />.  Extramedullary monoblastic sarcoma needs to be differentiated from malignant lymphoma or soft tissue sarcomas<ref name=":0" />.
*The main differential diagnoses of acute monoblastic leukemia include: AML without maturation, AML with minimal differentiation, AML with t(9;11)(p21.3;q23.3), and acute megakaryoblastic leukemia (AMKL)<ref name=":0">{{Cite journal|last=Arber|first=Daniel A.|last2=Orazi|first2=Attilio|last3=Hasserjian|first3=Robert|last4=Thiele|first4=Jürgen|last5=Borowitz|first5=Michael J.|last6=Le Beau|first6=Michelle M.|last7=Bloomfield|first7=Clara D.|last8=Cazzola|first8=Mario|last9=Vardiman|first9=James W.|date=2016|title=The 2016 revision to the World Health Organization classification of myeloid neoplasms and acute leukemia|url=https://www.ncbi.nlm.nih.gov/pubmed/27069254|journal=Blood|volume=127|issue=20|pages=2391–2405|doi=10.1182/blood-2016-03-643544|issn=1528-0020|pmid=27069254}}</ref>.  Extramedullary monoblastic sarcoma needs to be differentiated from malignant lymphoma or soft tissue sarcomas<ref name=":0" />.
*The main differential diagnoses of acute monocytic leukemia include: chronic myelomonocytic leukemia, acute myelomonocytic leukemia, and microgranular acute promyelocytic leukamia (APL)<ref name=":0" />.
*The main differential diagnoses of acute monocytic leukemia include: chronic myelomonocytic leukemia, acute myelomonocytic leukemia, and microgranular acute promyelocytic leukamia (APL)<ref name=":0" />.
*Haemophagocytosis (erythrophagocytosis) with t(8;16)(p11.2;p13.3) may also occur in acute myelomonocytic leukemia and some cases of AML with maturation<ref name=":0" />.
*Haemophagocytosis (erythrophagocytosis) with t(8;16)(p11.2;p13.3) may also occur in acute myelomonocytic leukemia and some cases of AML with maturation<ref name=":0" />.
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{| class="wikitable sortable"
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|-
|-
!Chr #!!'''Gain, Loss, Amp, LOH'''!!'''Minimal Region Cytoband and/or Genomic Coordinates [Genome Build; Size]'''!!'''Relevant Gene(s)'''
!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'''
!Diagnostic, Prognostic, and Therapeutic Significance - D, P, T
!'''Established Clinical Significance Per Guidelines - Yes or No (Source)'''
!Established Clinical Significance Per Guidelines - Yes or No (Source)
!'''Clinical Relevance Details/Other Notes'''
!Clinical Relevance Details/Other Notes
|-
|-
|<span class="blue-text">EXAMPLE:</span>
|<span class="blue-text">EXAMPLE:</span>
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!Chromosomal Pattern
!Chromosomal Pattern
!Molecular Pathogenesis
!Molecular Pathogenesis
!'''Prevalence -'''
!Prevalence -  
'''Common >20%, Recurrent 5-20% or Rare <5% (Disease)'''
Common >20%, Recurrent 5-20% or Rare <5% (Disease)
!'''Diagnostic, Prognostic, and Therapeutic Significance - D, P, T'''
!Diagnostic, Prognostic, and Therapeutic Significance - D, P, T
!'''Established Clinical Significance Per Guidelines - Yes or No (Source)'''
!Established Clinical Significance Per Guidelines - Yes or No (Source)
!'''Clinical Relevance Details/Other Notes'''
!Clinical Relevance Details/Other Notes
|-
|-
|<span class="blue-text">EXAMPLE:</span>
|<span class="blue-text">EXAMPLE:</span>
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<blockquote class='blockedit'>{{Box-round|title=v4:Characteristic Chromosomal Aberrations / Patterns|The content below was from the old template. Please incorporate above.}}</blockquote>
<blockquote class="blockedit">{{Box-round|title=v4:Characteristic Chromosomal Aberrations / Patterns|The content below was from the old template. Please incorporate above.}}</blockquote>


Myeloid-associated nonspecific cytogenetic abnormalities are present in most cases.
Myeloid-associated nonspecific cytogenetic abnormalities are present in most cases.
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{| class="wikitable sortable"
{| class="wikitable sortable"
|-
|-
!Gene!!'''Genetic Alteration'''!!'''Tumor Suppressor Gene, Oncogene, Other'''!!'''Prevalence -'''
!Gene!!Genetic Alteration!!Tumor Suppressor Gene, Oncogene, Other!!Prevalence -
'''Common >20%, Recurrent 5-20% or Rare <5% (Disease)'''
Common >20%, Recurrent 5-20% or Rare <5% (Disease)
!'''Diagnostic, Prognostic, and Therapeutic Significance - D, P, T  '''
!Diagnostic, Prognostic, and Therapeutic Significance - D, P, T  
!'''Established Clinical Significance Per Guidelines - Yes or No (Source)'''
!Established Clinical Significance Per Guidelines - Yes or No (Source)
!'''Clinical Relevance Details/Other Notes'''
!Clinical Relevance Details/Other Notes
|-
|-
|<span class="blue-text">EXAMPLE:</span>''EGFR''
|<span class="blue-text">EXAMPLE:</span>''EGFR''
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(use the "Cite" icon at the top of the page) <span style="color:#0070C0">(''Instructions: Add each reference into the text above by clicking where you want to insert the reference, selecting the “Cite” icon at the top of the wiki page, and using the “Automatic” tab option to search by PMID to select the reference to insert. 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. To insert the same reference again later in the page, select the “Cite” icon and “Re-use” to find the reference; DO NOT insert the same reference twice using the “Automatic” tab as it will be treated as two separate references. The reference list in this section will be automatically generated and sorted''</span><span style="color:#0070C0">''.''</span><span style="color:#0070C0">)</span> <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 where you want to insert the reference, selecting the “Cite” icon at the top of the wiki page, and using the “Automatic” tab option to search by PMID to select the reference to insert. 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. To insert the same reference again later in the page, select the “Cite” icon and “Re-use” to find the reference; DO NOT insert the same reference twice using the “Automatic” tab as it will be treated as two separate references. The reference list in this section will be automatically generated and sorted''</span><span style="color:#0070C0">''.''</span><span style="color:#0070C0">)</span> <references />


'''
<br />


==Notes==
==Notes==
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<nowiki>*</nowiki>''Citation of this Page'': “Acute monocytic leukaemia”. Compendium of Cancer Genome Aberrations (CCGA), Cancer Genomics Consortium (CGC), updated {{REVISIONMONTH}}/{{REVISIONDAY}}/{{REVISIONYEAR}}, <nowiki>https://ccga.io/index.php/HAEM5:Acute_monocytic_leukaemia</nowiki>.
<nowiki>*</nowiki>''Citation of this Page'': “Acute monocytic leukaemia”. Compendium of Cancer Genome Aberrations (CCGA), Cancer Genomics Consortium (CGC), updated {{REVISIONMONTH}}/{{REVISIONDAY}}/{{REVISIONYEAR}}, <nowiki>https://ccga.io/index.php/HAEM5:Acute_monocytic_leukaemia</nowiki>.
[[Category:HAEM5]][[Category:DISEASE]][[Category:Diseases A]]
[[Category:HAEM5]]
[[Category:DISEASE]]
[[Category:Diseases A]]
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