HAEM5:Acute myeloid leukaemia with DEK::NUP214 fusion: Difference between revisions
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{{DISPLAYTITLE:Acute myeloid leukaemia with DEK::NUP214 fusion}} | {{DISPLAYTITLE:Acute myeloid leukaemia with DEK::NUP214 fusion}} | ||
[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (WHO Classification, 5th ed.)]] | |||
==Primary Author(s)*== | ==Primary Author(s)*== | ||
| Line 34: | Line 28: | ||
|} | |} | ||
== | ==Related Terminology== | ||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
|Acceptable | |Acceptable | ||
| | |Acute myeloid leukaemia with t(6;9)(p22.3;q34.1) | ||
|- | |- | ||
|Not Recommended | |Not Recommended | ||
| | |N/A | ||
|} | |} | ||
==Gene Rearrangements== | ==Gene Rearrangements== | ||
[[File:T(6;9)(p23;q34).png]] | [[File:T(6;9)(p23;q34).png]] | ||
{| class="wikitable sortable" | {| class="wikitable sortable" | ||
|- | |- | ||
| Line 82: | Line 50: | ||
!Clinical Relevance Details/Other Notes | !Clinical Relevance Details/Other Notes | ||
|- | |- | ||
| | |''DEK'' | ||
|Rare (AML) | |''DEK::NUP214''||The pathogenic derivative is the der(6) resulting in fusion of the proto-oncogene 5’ ''DEK'' and 3’''NUP214''(''CAN'').||t(6;9)(p23;q34.1) | ||
|Rare (AML) | |||
|D, P | |D, P | ||
|Yes (WHO) | |Yes (WHO) | ||
|< | | | ||
The | *This AML subtype is classified based on the presence of a t(6;9)(p23;q34.1), which results in fusion of the 5’ portion of ''DEK'' at “6p23” (specifically 6p22.3[hg38]) and the 3’ portion of ''NUP214''(''CAN'') at “9q34.1” (specifically 9q34.13[hg38])<ref name=":0">WHO Classification of Tumours Editorial Board, eds, WHO Classification of Tumours, Haematolymphoid Tumours, 5th edition, IARC Press:Lyon, 2024. Online at: [https://tumourclassification.iarc.who.int/welcome/ WHO Classification of Tumours].</ref><ref>{{Cite journal|last=Khoury|first=Joseph D.|last2=Solary|first2=Eric|last3=Abla|first3=Oussama|last4=Akkari|first4=Yassmine|last5=Alaggio|first5=Rita|last6=Apperley|first6=Jane F.|last7=Bejar|first7=Rafael|last8=Berti|first8=Emilio|last9=Busque|first9=Lambert|date=2022-07|title=The 5th edition of the World Health Organization Classification of Haematolymphoid Tumours: Myeloid and Histiocytic/Dendritic Neoplasms|url=https://pubmed.ncbi.nlm.nih.gov/35732831|journal=Leukemia|volume=36|issue=7|pages=1703–1719|doi=10.1038/s41375-022-01613-1|issn=1476-5551|pmc=9252913|pmid=35732831}}</ref>. The breakpoints are intronic, producing an in-frame fusion<ref>{{Cite journal|last=von Lindern|first=M.|last2=Fornerod|first2=M.|last3=van Baal|first3=S.|last4=Jaegle|first4=M.|last5=de Wit|first5=T.|last6=Buijs|first6=A.|last7=Grosveld|first7=G.|date=1992|title=The translocation (6;9), associated with a specific subtype of acute myeloid leukemia, results in the fusion of two genes, dek and can, and the expression of a chimeric, leukemia-specific dek-can mRNA|url=https://www.ncbi.nlm.nih.gov/pubmed/1549122|journal=Molecular and Cellular Biology|volume=12|issue=4|pages=1687–1697|doi=10.1128/mcb.12.4.1687|issn=0270-7306|pmc=PMC369612|pmid=1549122}}</ref>. The ''DEK''-''NUP214'' fusion present on the derivative chromosome 6 is considered the pathogenic entity as the reciprocal ''NUP214''-''DEK'' fusion on chromosome 9 does not appear to be transcribed<ref>{{Cite journal|last=von Lindern|first=M.|last2=Fornerod|first2=M.|last3=Soekarman|first3=N.|last4=van Baal|first4=S.|last5=Jaegle|first5=M.|last6=Hagemeijer|first6=A.|last7=Bootsma|first7=D.|last8=Grosveld|first8=G.|date=1992|title=Translocation t(6;9) in acute non-lymphocytic leukaemia results in the formation of a DEK-CAN fusion gene|url=https://www.ncbi.nlm.nih.gov/pubmed/1308167|journal=Bailliere's Clinical Haematology|volume=5|issue=4|pages=857–879|doi=10.1016/s0950-3536(11)80049-1|issn=0950-3536|pmid=1308167}}</ref>. | ||
*Typically, the ''DEK''-''NUP214'' fusion presents as the sole abnormality but can be part of a complex karyotype<ref name=":0" />. | |||
*Cases with the 6;9 translocation and <20% blasts are not currently classified as AML, which is controversial. Such cases should have close follow-up to monitor for development of more definitive evidence of AML or may be treated as AML if clinically appropriate<ref name=":0" />. | |||
*The t(6;9) occurs in 0.6-1.7% of AML cases in children<ref name=":1" /> (REFERENCES) and about 1% of adult AML cases (REFERENCES). | |||
*''DEK''::''NUP214'' has traditionally been associated with a poor prognosis in both adult and pediatric AML cases<ref name=":0" />. Of note, a 2014 retrospective analysis suggests a better outcome for pediatric patients with this translocation than previously reported<ref name=":1">{{Cite journal|last=Sandahl|first=Julie Damgaard|last2=Coenen|first2=Eva A.|last3=Forestier|first3=Erik|last4=Harbott|first4=Jochen|last5=Johansson|first5=Bertil|last6=Kerndrup|first6=Gitte|last7=Adachi|first7=Souichi|last8=Auvrignon|first8=Anne|last9=Beverloo|first9=H. Berna|date=2014|title=t(6;9)(p22;q34)/DEK-NUP214-rearranged pediatric myeloid leukemia: an international study of 62 patients|url=https://www.ncbi.nlm.nih.gov/pubmed/24441146|journal=Haematologica|volume=99|issue=5|pages=865–872|doi=10.3324/haematol.2013.098517|issn=1592-8721|pmc=4008104|pmid=24441146}}</ref>. Elevated white blood cell counts and higher bone marrow blast percentages are associated with shorter periods of overall survival and disease-free survival, respectively<ref name=":0" />. Limited data suggests early allogeneic stem cell transplantation may be associated with better overall survival compared to patients without transplantation, suggesting accurate diagnosis for these patients is crucial<ref name=":0" /><ref>{{Cite journal|last=Slovak|first=M. L.|last2=Gundacker|first2=H.|last3=Bloomfield|first3=C. D.|last4=Dewald|first4=G.|last5=Appelbaum|first5=F. R.|last6=Larson|first6=R. A.|last7=Tallman|first7=M. S.|last8=Bennett|first8=J. M.|last9=Stirewalt|first9=D. L.|date=2006|title=A retrospective study of 69 patients with t(6;9)(p23;q34) AML emphasizes the need for a prospective, multicenter initiative for rare 'poor prognosis' myeloid malignancies|url=https://www.ncbi.nlm.nih.gov/pubmed/16628187|journal=Leukemia|volume=20|issue=7|pages=1295–1297|doi=10.1038/sj.leu.2404233|issn=0887-6924|pmid=16628187}}</ref><ref>{{Cite journal|last=Ishiyama|first=K.|last2=Takami|first2=A.|last3=Kanda|first3=Y.|last4=Nakao|first4=S.|last5=Hidaka|first5=M.|last6=Maeda|first6=T.|last7=Naoe|first7=T.|last8=Taniguchi|first8=S.|last9=Kawa|first9=K.|date=2012|title=Allogeneic hematopoietic stem cell transplantation for acute myeloid leukemia with t(6;9)(p23;q34) dramatically improves the patient prognosis: a matched-pair analysis|url=https://www.ncbi.nlm.nih.gov/pubmed/21869835|journal=Leukemia|volume=26|issue=3|pages=461–464|doi=10.1038/leu.2011.229|issn=1476-5551|pmid=21869835}}</ref>. | |||
*The concurrent presence of FLT3-ITD does not appear to negatively impact survival in the pediatric population<ref name=":0" />. | |||
|} | |} | ||
==Individual Region Genomic Gain/Loss/LOH== | ==Individual Region Genomic Gain/Loss/LOH== | ||
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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 | ||
|- | |- | ||
|N/A | |N/A | ||
| Line 112: | Line 86: | ||
!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 | ||
|- | |- | ||
|N/A | |N/A | ||
| Line 127: | Line 101: | ||
==Gene Mutations (SNV/INDEL)== | ==Gene Mutations (SNV/INDEL)== | ||
COSMIC does not have specific information on mutations related to this subtype of AML. | *COSMIC does not have specific information on mutations related to this subtype of AML. | ||
{| 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 | ||
|- | |- | ||
| | |''FLT3'' | ||
<br /> | <br /> | ||
| | |ITD mutations | ||
| | |Oncogene | ||
| | |Common (AML with DEK::NUP214 fusion) | ||
|<span class="blue-text">EXAMPLE:</span> T | |<span class="blue-text">EXAMPLE:</span> T | ||
|<span class="blue-text">EXAMPLE:</span> Yes (NCCN) | |<span class="blue-text">EXAMPLE:</span> Yes (NCCN) | ||
| | | | ||
*FLT3-ITD occurs in 69% of children and 78% of adults. | |||
*In contrast to FLT3-ITD mutations, FLT3-TKD is very uncommon. | |||
*The concurrent presence of FLT3-ITD with t(6;9) does not appear to negatively impact survival in the pediatric population<ref name=":0" />. | |||
|}Note: A more extensive list of mutations can be found in [https://www.cbioportal.org/ <u>cBioportal</u>], [https://cancer.sanger.ac.uk/cosmic <u>COSMIC</u>], and/or other databases. When applicable, gene-specific pages within the CCGA site directly link to pertinent external content. | |}Note: A more extensive list of mutations can be found in [https://www.cbioportal.org/ <u>cBioportal</u>], [https://cancer.sanger.ac.uk/cosmic <u>COSMIC</u>], and/or other databases. When applicable, gene-specific pages within the CCGA site directly link to pertinent external content. | ||
==Epigenomic Alterations== | ==Epigenomic Alterations== | ||
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==Genes and Main Pathways Involved== | ==Genes and Main Pathways Involved== | ||
{| class="wikitable sortable" | {| class="wikitable sortable" | ||
|- | |- | ||
!Gene; Genetic Alteration!!Pathway!!Pathophysiologic Outcome | !Gene; Genetic Alteration!!Pathway!!Pathophysiologic Outcome | ||
|- | |- | ||
| | |''DEK::NUP214'' | ||
| | |Unknown | ||
| | |The fusion protein is known to act as an aberrant transcription factor, alter nuclear transport and induce myeloid cell-specific global protein synthesis<ref name=":0" /><ref>{{Cite journal|last=Ageberg|first=Malin|last2=Drott|first2=Kristina|last3=Olofsson|first3=Tor|last4=Gullberg|first4=Urban|last5=Lindmark|first5=Anders|date=2008|title=Identification of a novel and myeloid specific role of the leukemia-associated fusion protein DEK-NUP214 leading to increased protein synthesis|url=https://www.ncbi.nlm.nih.gov/pubmed/18181180|journal=Genes, Chromosomes & Cancer|volume=47|issue=4|pages=276–287|doi=10.1002/gcc.20531|issn=1098-2264|pmid=18181180}}</ref>. | ||
|} | |} | ||
==Genetic Diagnostic Testing Methods== | ==Genetic Diagnostic Testing Methods== | ||
Karyotype, FISH, RT-PCR | Karyotype, FISH, RT-PCR (and any other fusion detecting technologies) | ||
==Familial Forms== | ==Familial Forms== | ||
| Line 209: | Line 156: | ||
==References== | ==References== | ||
<references /> | |||
==Notes== | ==Notes== | ||