HAEM5:Myelodysplastic neoplasm with increased blasts: Difference between revisions

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<blockquote class='blockedit'>{{Box-round|title=v4:Clinical Features|The content below was from the old template. Please incorporate above.}}
<blockquote class='blockedit'>{{Box-round|title=v4:Clinical Features|The content below was from the old template. Please incorporate above.}}</blockquote>


The clinical features are often nonspecific and are generally related to the corresponding cytopenias such as anemia, thrombocytopenia and neutropenia. The recommended thresholds for cytopenia suggested by International Prognostic Scoring System (IPSS) (PMID: 22740453) include:
The clinical features are often nonspecific and are generally related to the corresponding cytopenias such as anemia, thrombocytopenia and neutropenia. The recommended thresholds for cytopenia suggested by International Prognostic Scoring System (IPSS) (PMID: 22740453) include:
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*Platelet count: <100 x10<sup>9</sup>/L
*Platelet count: <100 x10<sup>9</sup>/L


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==Sites of Involvement==
==Sites of Involvement==
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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>


None
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* Individual Region Genomic Gain/Loss/LOH
* Individual Region Genomic Gain/Loss/LOH
* Characteristic Chromosomal Patterns
* Characteristic Chromosomal Patterns
* Gene Mutations (SNV/INDEL)}}
* Gene Mutations (SNV/INDEL)}}</blockquote>


*Diagnosis: 2-19% blasts in peripheral blood or 5-19% myeloblasts in bone marrow
*Diagnosis: 2-19% blasts in peripheral blood or 5-19% myeloblasts in bone marrow
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*Therapeutic: Hematopoietic stem cell transplantation (HSCT) is the therapy of choice for MDS-EB in childhood with the best available donor<ref>{{Cite journal|last=Hasle|first=Henrik|date=2016-12-02|title=Myelodysplastic and myeloproliferative disorders of childhood|url=https://pubmed.ncbi.nlm.nih.gov/27913534|journal=Hematology. American Society of Hematology. Education Program|volume=2016|issue=1|pages=598–604|doi=10.1182/asheducation-2016.1.598|issn=1520-4383|pmc=6142519|pmid=27913534}}</ref>. Azacitidine, a DNA methyltransferase-inhibitor, has been reported to increase the overall survival for adult patients with high-risk MDS (MDS-REB) in comparison with conventional care<ref>{{Cite journal|last=Gore|first=Steven D.|last2=Fenaux|first2=Pierre|last3=Santini|first3=Valeria|last4=Bennett|first4=John M.|last5=Silverman|first5=Lewis R.|last6=Seymour|first6=John F.|last7=Hellström-Lindberg|first7=Eva|last8=Swern|first8=Arlene S.|last9=Beach|first9=Charles L.|date=2013-07|title=A multivariate analysis of the relationship between response and survival among patients with higher-risk myelodysplastic syndromes treated within azacitidine or conventional care regimens in the randomized AZA-001 trial|url=https://pubmed.ncbi.nlm.nih.gov/23585522|journal=Haematologica|volume=98|issue=7|pages=1067–1072|doi=10.3324/haematol.2012.074831|issn=1592-8721|pmc=3696610|pmid=23585522}}</ref>.
*Therapeutic: Hematopoietic stem cell transplantation (HSCT) is the therapy of choice for MDS-EB in childhood with the best available donor<ref>{{Cite journal|last=Hasle|first=Henrik|date=2016-12-02|title=Myelodysplastic and myeloproliferative disorders of childhood|url=https://pubmed.ncbi.nlm.nih.gov/27913534|journal=Hematology. American Society of Hematology. Education Program|volume=2016|issue=1|pages=598–604|doi=10.1182/asheducation-2016.1.598|issn=1520-4383|pmc=6142519|pmid=27913534}}</ref>. Azacitidine, a DNA methyltransferase-inhibitor, has been reported to increase the overall survival for adult patients with high-risk MDS (MDS-REB) in comparison with conventional care<ref>{{Cite journal|last=Gore|first=Steven D.|last2=Fenaux|first2=Pierre|last3=Santini|first3=Valeria|last4=Bennett|first4=John M.|last5=Silverman|first5=Lewis R.|last6=Seymour|first6=John F.|last7=Hellström-Lindberg|first7=Eva|last8=Swern|first8=Arlene S.|last9=Beach|first9=Charles L.|date=2013-07|title=A multivariate analysis of the relationship between response and survival among patients with higher-risk myelodysplastic syndromes treated within azacitidine or conventional care regimens in the randomized AZA-001 trial|url=https://pubmed.ncbi.nlm.nih.gov/23585522|journal=Haematologica|volume=98|issue=7|pages=1067–1072|doi=10.3324/haematol.2012.074831|issn=1592-8721|pmc=3696610|pmid=23585522}}</ref>.


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==Individual Region Genomic Gain / Loss / LOH==
==Individual Region Genomic Gain / Loss / LOH==
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<blockquote class='blockedit'>{{Box-round|title=v4:Genomic Gain/Loss/LOH|The content below was from the old template. Please incorporate above.}}</blockquote>


*Nonspecific cytogenetic abnormalities have been observed in 30-50% of MDS-EB cases.
*Nonspecific cytogenetic abnormalities have been observed in 30-50% of MDS-EB cases.
*Gain of chromosome 8, del(5q) or t(5q), monosomy 7, del(7q), del(20q), complex karyotype<ref>{{Cite journal|last=Germing|first=Ulrich|last2=Strupp|first2=Corinna|last3=Kuendgen|first3=Andrea|last4=Isa|first4=Shadi|last5=Knipp|first5=Sabine|last6=Hildebrandt|first6=Barbara|last7=Giagounidis|first7=Aristoteles|last8=Aul|first8=Carlo|last9=Gattermann|first9=Norbert|date=2006-12|title=Prospective validation of the WHO proposals for the classification of myelodysplastic syndromes|url=https://pubmed.ncbi.nlm.nih.gov/17145595|journal=Haematologica|volume=91|issue=12|pages=1596–1604|issn=1592-8721|pmid=17145595}}</ref>.
*Gain of chromosome 8, del(5q) or t(5q), monosomy 7, del(7q), del(20q), complex karyotype<ref>{{Cite journal|last=Germing|first=Ulrich|last2=Strupp|first2=Corinna|last3=Kuendgen|first3=Andrea|last4=Isa|first4=Shadi|last5=Knipp|first5=Sabine|last6=Hildebrandt|first6=Barbara|last7=Giagounidis|first7=Aristoteles|last8=Aul|first8=Carlo|last9=Gattermann|first9=Norbert|date=2006-12|title=Prospective validation of the WHO proposals for the classification of myelodysplastic syndromes|url=https://pubmed.ncbi.nlm.nih.gov/17145595|journal=Haematologica|volume=91|issue=12|pages=1596–1604|issn=1592-8721|pmid=17145595}}</ref>.


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==Characteristic Chromosomal Patterns==
==Characteristic Chromosomal Patterns==
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Gain of chromosome 8, del(5q) or t(5q), monosomy 7, del(7q), del(20q), complex karyotype  
Gain of chromosome 8, del(5q) or t(5q), monosomy 7, del(7q), del(20q), complex karyotype  


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


Most frequent mutations: ''SRSF2, IDH1, IDH2, ASXL1, CBL, RUNX1, RAS''
Most frequent mutations: ''SRSF2, IDH1, IDH2, ASXL1, CBL, RUNX1, RAS''
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None
None


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==Epigenomic Alterations==
==Epigenomic Alterations==
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<blockquote class='blockedit'>{{Box-round|title=v4:Genes and Main Pathways Involved|The content below was from the old template. Please incorporate above.}}
<blockquote class='blockedit'>{{Box-round|title=v4:Genes and Main Pathways Involved|The content below was from the old template. Please incorporate above.}}</blockquote>


*''SRSF2'': involved in pre-mRNA splicing
*''SRSF2'': involved in pre-mRNA splicing
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*''RAS'': involved in RAS/MAPK pathway
*''RAS'': involved in RAS/MAPK pathway


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==Genetic Diagnostic Testing Methods==
==Genetic Diagnostic Testing Methods==