Difference between revisions of "HAEM5:Adult T-cell leukaemia/lymphoma"

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{{DISPLAYTITLE:Adult T-cell leukaemia/lymphoma}}
 
{{DISPLAYTITLE:Adult T-cell leukaemia/lymphoma}}
[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (5th ed.)]]
+
[[HAEM5:Table_of_Contents|Haematolymphoid Tumours (WHO Classification, 5th ed.)]]
  
 
{{Under Construction}}
 
{{Under Construction}}
  
<blockquote class='blockedit'>{{Box-round|title=HAEM5 Conversion Notes|This page was converted to the new template on 2023-11-30. The original page can be found at [[HAEM4:Adult T-cell Leukemia/Lymphoma]].
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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:Adult T-cell Leukemia/Lymphoma]].
 
}}</blockquote>
 
}}</blockquote>
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 +
<span style="color:#0070C0">(General Instructions – The main focus of these pages is the clinically significant genetic alterations in each disease type. Use [https://www.genenames.org/ <u>HUGO-approved gene names and symbols</u>] (italicized when appropriate), [https://varnomen.hgvs.org/ 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); to add (or move) a row or column to a table, click within the table and select the > symbol that appears to be given options. 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 </span><u>[[Author_Instructions]]</u><span style="color:#0070C0"> and [[Frequently Asked Questions (FAQs)|<u>FAQs</u>]] as well as contact your [[Leadership|<u>Associate Editor</u>]] or [mailto:CCGA@cancergenomics.org <u>Technical Support</u>])</span>
 +
 
==Primary Author(s)*==
 
==Primary Author(s)*==
  
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__TOC__
 
__TOC__
  
==Cancer Category / Type==
+
==WHO Classification of Disease==
  
Mature T- and NK-Cell Neoplasms
+
{| class="wikitable"
 
+
!Structure
==Cancer Sub-Classification / Subtype==
+
!Disease
 
+
|-
Adult T-Cell Leukemia/lymphoma (ATLL)
+
|Book
 +
|Haematolymphoid Tumours (5th ed.)
 +
|-
 +
|Category
 +
|T-cell and NK-cell lymphoid proliferations and lymphomas
 +
|-
 +
|Family
 +
|Mature T-cell and NK-cell neoplasms
 +
|-
 +
|Type
 +
|Mature T-cell and NK-cell leukaemias
 +
|-
 +
|Subtype(s)
 +
|Adult T-cell leukaemia/lymphoma
 +
|}
  
 
==Definition / Description of Disease==
 
==Definition / Description of Disease==
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==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>
+
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"
 
{| class="wikitable"
 
|'''Signs and Symptoms'''
 
|'''Signs and Symptoms'''
|EXAMPLE Asymptomatic (incidental finding on complete blood counts)
+
|<span class="blue-text">EXAMPLE:</span> Asymptomatic (incidental finding on complete blood counts)
  
EXAMPLE B-symptoms (weight loss, fever, night sweats)
+
<span class="blue-text">EXAMPLE:</span> B-symptoms (weight loss, fever, night sweats)
  
EXAMPLE Fatigue
+
<span class="blue-text">EXAMPLE:</span> Fatigue
  
EXAMPLE Lymphadenopathy (uncommon)
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<span class="blue-text">EXAMPLE:</span> Lymphadenopathy (uncommon)
 
|-
 
|-
 
|'''Laboratory Findings'''
 
|'''Laboratory Findings'''
|EXAMPLE Cytopenias
+
|<span class="blue-text">EXAMPLE:</span> Cytopenias
  
EXAMPLE Lymphocytosis (low level)
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<span class="blue-text">EXAMPLE:</span> Lymphocytosis (low level)
 
|}
 
|}
  
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE t(9;22)(q34;q11.2)||EXAMPLE 3'ABL1 / 5'BCR||EXAMPLE der(22)||EXAMPLE 20% (COSMIC)
+
|<span class="blue-text">EXAMPLE:</span> t(9;22)(q34;q11.2)||<span class="blue-text">EXAMPLE:</span> 3'ABL1 / 5'BCR||<span class="blue-text">EXAMPLE:</span> der(22)||<span class="blue-text">EXAMPLE:</span> 20% (COSMIC)
EXAMPLE 30% (add reference)
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<span class="blue-text">EXAMPLE:</span> 30% (add reference)
 
|Yes
 
|Yes
 
|No
 
|No
 
|Yes
 
|Yes
|EXAMPLE
+
|<span class="blue-text">EXAMPLE:</span>
  
 
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).
 
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).
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==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>
+
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. Do not delete table.'') </span>
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE
+
|<span class="blue-text">EXAMPLE:</span>
  
 
7
 
7
|EXAMPLE Loss
+
|<span class="blue-text">EXAMPLE:</span> Loss
|EXAMPLE
+
|<span class="blue-text">EXAMPLE:</span>
  
 
chr7:1- 159,335,973 [hg38]
 
chr7:1- 159,335,973 [hg38]
|EXAMPLE
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|<span class="blue-text">EXAMPLE:</span>
  
 
chr7
 
chr7
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|Yes
 
|Yes
 
|No
 
|No
|EXAMPLE
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|<span class="blue-text">EXAMPLE:</span>
  
 
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).
 
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).
 
|-
 
|-
|EXAMPLE
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|<span class="blue-text">EXAMPLE:</span>
  
 
8
 
8
|EXAMPLE Gain
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|<span class="blue-text">EXAMPLE:</span> Gain
|EXAMPLE
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|<span class="blue-text">EXAMPLE:</span>
  
 
chr8:1-145,138,636 [hg38]
 
chr8:1-145,138,636 [hg38]
|EXAMPLE
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|<span class="blue-text">EXAMPLE:</span>
  
 
chr8
 
chr8
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|No
 
|No
 
|No
 
|No
|EXAMPLE
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|<span class="blue-text">EXAMPLE:</span>
  
 
Common recurrent secondary finding for t(8;21) (add reference).
 
Common recurrent secondary finding for t(8;21) (add reference).
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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>
+
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. Do not delete table.'')</span>
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE
+
|<span class="blue-text">EXAMPLE:</span>
  
 
Co-deletion of 1p and 18q
 
Co-deletion of 1p and 18q
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|No
 
|No
 
|No
 
|No
|EXAMPLE:
+
|<span class="blue-text">EXAMPLE:</span>
  
 
See chromosomal rearrangements table as this pattern is due to an unbalanced derivative translocation associated with oligodendroglioma (add reference).
 
See chromosomal rearrangements table as this pattern is due to an unbalanced derivative translocation associated with oligodendroglioma (add reference).
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==Gene Mutations (SNV / INDEL)==
 
==Gene Mutations (SNV / INDEL)==
  
Put your text here and fill in the table <span style="color:#0070C0">(''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.'') </span>
+
Put your text here and fill in the table <span style="color:#0070C0">(''Instructions: This table is not meant to be an exhaustive list; please include only genes/alterations that are recurrent and common as well as 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. Do not delete table.'') </span>
  
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
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!Notes
 
!Notes
 
|-
 
|-
|EXAMPLE: TP53; Variable LOF mutations
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|<span class="blue-text">EXAMPLE:</span> TP53; Variable LOF mutations
  
EXAMPLE:
+
<span class="blue-text">EXAMPLE:</span>
  
 
EGFR; Exon 20 mutations
 
EGFR; Exon 20 mutations
  
EXAMPLE: BRAF; Activating mutations
+
<span class="blue-text">EXAMPLE:</span> BRAF; Activating mutations
|EXAMPLE: TSG
+
|<span class="blue-text">EXAMPLE:</span> TSG
|EXAMPLE: 20% (COSMIC)
+
|<span class="blue-text">EXAMPLE:</span> 20% (COSMIC)
  
EXAMPLE: 30% (add Reference)
+
<span class="blue-text">EXAMPLE:</span> 30% (add Reference)
|EXAMPLE: IDH1 R123H
+
|<span class="blue-text">EXAMPLE:</span> IDH1 R123H
|EXAMPLE: EGFR amplification
+
|<span class="blue-text">EXAMPLE:</span> EGFR amplification
 
|
 
|
 
|
 
|
 
|
 
|
|EXAMPLE:  Excludes hairy cell leukemia (HCL) (add reference).
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|<span class="blue-text">EXAMPLE:</span>  Excludes hairy cell leukemia (HCL) (add reference).
 
<br />
 
<br />
 
|}
 
|}
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!Type!!Gene/Region/Other
 
!Type!!Gene/Region/Other
 
|-
 
|-
|Concomitant Mutations||EXAMPLE IDH1 R123H
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|Concomitant Mutations||<span class="blue-text">EXAMPLE:</span> IDH1 R123H
 
|-
 
|-
|Secondary Mutations||EXAMPLE Trisomy 7
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|Secondary Mutations||<span class="blue-text">EXAMPLE:</span> Trisomy 7
 
|-
 
|-
|Mutually Exclusive||EXAMPLE EGFR Amplification
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|Mutually Exclusive||<span class="blue-text">EXAMPLE:</span> EGFR Amplification
 
|}
 
|}
  
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==Genes and Main Pathways Involved==
 
==Genes and Main Pathways Involved==
  
Put your text here and fill in the table <span style="color:#0070C0">(''Instructions: Can include references in the table.'')</span>
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Put your text here and fill in the table <span style="color:#0070C0">(''Instructions: Can include references in the table. Do not delete table.'')</span>
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
 
|-
 
|-
 
!Gene; Genetic Alteration!!Pathway!!Pathophysiologic Outcome
 
!Gene; Genetic Alteration!!Pathway!!Pathophysiologic Outcome
 
|-
 
|-
|EXAMPLE: BRAF and MAP2K1; Activating mutations
+
|<span class="blue-text">EXAMPLE:</span> BRAF and MAP2K1; Activating mutations
|EXAMPLE: MAPK signaling
+
|<span class="blue-text">EXAMPLE:</span> MAPK signaling
|EXAMPLE: Increased cell growth and proliferation
+
|<span class="blue-text">EXAMPLE:</span> Increased cell growth and proliferation
 
|-
 
|-
|EXAMPLE: CDKN2A; Inactivating mutations
+
|<span class="blue-text">EXAMPLE:</span> CDKN2A; Inactivating mutations
|EXAMPLE: Cell cycle regulation
+
|<span class="blue-text">EXAMPLE:</span> Cell cycle regulation
|EXAMPLE: Unregulated cell division
+
|<span class="blue-text">EXAMPLE:</span> Unregulated cell division
 
|-
 
|-
|EXAMPLE:  KMT2C and ARID1A; Inactivating mutations
+
|<span class="blue-text">EXAMPLE:</span>  KMT2C and ARID1A; Inactivating mutations
|EXAMPLE:  Histone modification, chromatin remodeling
+
|<span class="blue-text">EXAMPLE:</span>  Histone modification, chromatin remodeling
|EXAMPLE:  Abnormal gene expression program
+
|<span class="blue-text">EXAMPLE:</span>  Abnormal gene expression program
 
|}
 
|}
  
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==Links==
 
==Links==
  
Put your text placeholder here (or anywhere appropriate on the page) and use the "Link" icon at the top of the page <span style="color:#0070C0">(''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 "<nowiki>http://www</nowiki>." portion.'')</span>
+
Put your text placeholder here (or anywhere appropriate on the page) and use the "Link" icon at the top of the page <span style="color:#0070C0">(''Instructions: Highlight text to which you want to add a link in this section or elsewhere, 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 by including the "<nowiki>http://www</nowiki>." portion.'')</span>
  
 
==References==
 
==References==

Latest revision as of 17:35, 6 September 2024

Haematolymphoid Tumours (WHO Classification, 5th ed.)

editContent 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:Adult T-cell Leukemia/Lymphoma.

(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); to add (or move) a row or column to a table, click within the table and select the > symbol that appears to be given options. 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)*

Prasad R. Kopparapu, PhD and Ferrin C. Wheeler, PhD, FACMG

Vanderbilt University Medical Center

WHO Classification of Disease

Structure Disease
Book Haematolymphoid Tumours (5th ed.)
Category T-cell and NK-cell lymphoid proliferations and lymphomas
Family Mature T-cell and NK-cell neoplasms
Type Mature T-cell and NK-cell leukaemias
Subtype(s) Adult T-cell leukaemia/lymphoma

Definition / Description of Disease

Adult T-cell Leukemia/Lymphoma (ATLL) is a systemic, aggressive T-cell malignancy cause by chronic infection of human T lymphotropic virus 1 (HTLV-1) with poor prognosis[1].

Synonyms / Terminology

Adult T-cell leukemia, Adult T-cell lymphoma, HTLV-1 associated adult T-cell leukemia-lymphoma.

Epidemiology / Prevalence

ATLL is endemic in many parts of Southwestern Japan, the Caribbean basin, Sub-Saharan Africa, South America, Romania, Northern Iran, parts of the Middle East and Australo-Melanesia[2][3].

ATLL occurs only in adults between 30 to 90 years of age with an average age of 58 years. The male-to-female ratio is 1.5:1[4].

Transmission occurs through breast milk, sexual fluids, peripheral blood and blood products[2].

Clinical Features

Put your text here and fill in the table (Instruction: Can include references in the table. Do not delete table.)

Signs and Symptoms EXAMPLE: Asymptomatic (incidental finding on complete blood counts)

EXAMPLE: B-symptoms (weight loss, fever, night sweats)

EXAMPLE: Fatigue

EXAMPLE: Lymphadenopathy (uncommon)

Laboratory Findings EXAMPLE: Cytopenias

EXAMPLE: Lymphocytosis (low level)


editv4:Clinical Features
The content below was from the old template. Please incorporate above.

ATLL is classified into four clinical subtypes: Acute, Lymphoma, Chronic and Smoldering[5].

Acute: Most common type (65% of patients) with elevated WBC count, skin rash and generalized lymphadenopathy, hypercalcemia, hepatosplenomegaly, elevated LDH and frequent opportunistic infections like pneumocystis jirovecii pneumonia and strongyloidiasis.

Lymphoma: The lymphomatous variant is characterized by lymphadenopathy, absence of lymphocytosis, possible extranodal lesions with minimal peripheral blood involvement and less frequent hypercalcemia.

Chronic: The chronic variant can progress to acute or lymphomatous subtype. This variant manifests with lymphocytosis and exfoliative skin lesions.  Atypical lymphocytes are fewer in number in peripheral blood. There can be mild hepatosplenomegaly and lymphadenopathy. Hypercalcemia is not observed, and no involvement of CNS, bone and gastrointestinal tract, and neither ascites nor pleural effusion.

Smoldering: This variant may also progress to the acute subtype upon long duration. This variant may present with skin or lung lesions. More than 5% circulating abnormal T-cell lymphocytes can be found in the absence of leukocytosis. No manifestation of hypercalcemia, hepatosplenomegaly or lymphadenopathy.

Sites of Involvement

In addition to lymph node involvement, there is involvement in extranodal sites like spleen, skin, lung, liver, gastrointestinal tract and CNS, making this a systemic disease with peripheral blood involvement[6].

Morphologic Features

The morphological features of ATLL in skin include erythema, papules, and nodules based on macroscopic examination and perivascular infiltration of atypical lymphoid cells, diffuse infiltration of medium to large sized atypical lymphoid cells and infiltration of large atypical lymphoid cell as per histopathological observations.

Lymph node lesions present as pleomorphic small, medium and large cell types, anaplastic and an angioimmunoblastic T-cell lymphoma type.

Infiltration of atypical lymphoid cells with irregular or round nuclei is seen in the bone marrow cavity with detection of hypercalcemia.

In liver, infiltration of atypical medium to large sized lymphoid cells with irregular nuclei is seen.

Diffuse, pleomorphic and anaplastic type cells can infiltrate the stomach destroying the gastric glands.

In peripheral blood, “flower like” cells that have multilobed nucleus with basophilic cytoplasm can be observed by Giemsa staining[7].

Immunophenotype

In most patients, tumor cells exhibit phenotype of mature CD4+ T cells by expressing CD2, CD3, CD5, CD25, CD45RO, CD29, T-cell receptor αβ, FOXP3, CD52,  and HLA-DR[8][9].

Most cases are CD4+CD8-, but rarely, cases can be CD4-CD8+ or CD4+CD8+. A typical immunophenotype for ATLL is: CD2+, CD3+, CD4+, CD7-, CD8-, CD25+, CD30+/-, TCR αβ+[10].

Immunophenotypic characterization of CD3, CD4, CD7 , CD8, and CD25 are the minimum requirement for an ATLL diagnosis.

Finding Marker
Positive (universal) CD2, CD3, CD5, CD4, CCD4
Positive (subset) CD8, CD4, CD30, FOXP3
Negative (universal) CD7, CD8, TdT, TCL1, ALK1, B cell antigens, cytotoxic molecules
Negative (subset) CD4,CD8, ALK

Chromosomal Rearrangements (Gene Fusions)

Put your text here and fill in the table

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
EXAMPLE: t(9;22)(q34;q11.2) EXAMPLE: 3'ABL1 / 5'BCR EXAMPLE: der(22) EXAMPLE: 20% (COSMIC)

EXAMPLE: 30% (add reference)

Yes No Yes 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).


editv4:Chromosomal Rearrangements (Gene Fusions)
The content below was from the old template. Please incorporate above.

Tandem duplications of  2q33.2 segments cause formation of CTLA4-CD28 and ICOS-CD28 fusion products that render prolonged co-stimulatory signals[11].

Chromosomal Rearrangement Genes in Fusion (5’ or 3’ Segments) Pathogenic Derivative Prevalence
2q33.2 (Tandem Duplication) 5’ CTLA/3’CD28 der(2) 7%
2q33.2 (Tandem Duplication) 5’ICOS/3’CD28 der(2) 7%


editv4:Clinical Significance (Diagnosis, Prognosis and Therapeutic Implications).
Please incorporate this section into the relevant tables found in:
  • Chromosomal Rearrangements (Gene Fusions)
  • Individual Region Genomic Gain/Loss/LOH
  • Characteristic Chromosomal Patterns
  • Gene Mutations (SNV/INDEL)

ATLL diagnosis can be made based on seropositivity for HTLV-1 and histologically and/or cytologically proven peripheral T cell lymphoma (PTCL). Diagnosis can also be made by quantifying proviral DNA loads (PVLs) in peripheral blood mononuclear cells using real time PCR. PVL of an infected person can range from 0.01 to 50% or higher. Other diagnostic criteria includes appropriate patient demographic information, hypercalcemia, skin lesions and a leukemic phase.

The prognosis of ATLL is largely dependent on the subtype. The acute and lymphomatous subtypes are aggressive, with a median survival of 6.2 months and 10.2 months, respectively. The less-aggressive chronic and smoldering subtypes have a median survival of approximately 4.5 years[5]. Prognostic factors include clinical variant, age, serum calcium and LDH levels as well as detection of opportunistic infections of parasitic or viral types and p16 gene deletion and p53 mutation.

As ATLL is resistant to most chemotherapy, there is no standard chemotherapy regimen. High dose combination chemotherapy and bone marrow transplantation have been tried previously[12]. Monoclonal antibody-based therapies against IL-2R (anti-Tac), CCR4 (mogamulizumab) and CD52 (alemtuzumab) have also been attempted along with arsenic trioxide, interferon α and zidovudine[13].

Individual Region Genomic Gain / Loss / LOH

Put your text here and fill in the table (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. Do not delete table.)

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
EXAMPLE:

7

EXAMPLE: Loss EXAMPLE:

chr7:1- 159,335,973 [hg38]

EXAMPLE:

chr7

Yes Yes No EXAMPLE:

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).

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).

editv4:Genomic Gain/Loss/LOH
The content below was from the old template. Please incorporate above.

ATLL with high number of chromosomal imbalances is associated with poor survival[14][15][16][17].

Chromosome Number Gain/Loss/Amp/LOH Region
1 Gain 1q
2 Gain 2p
3 Gain 3p
4 Gain 4q
6 Loss 6q
7 Gain 7p, 7q
9 Amp 9p
10 Loss 10p
13 Loss 13q
14 Gain 14q
16 Loss 16q
18 Loss 18p

Characteristic Chromosomal Patterns

Put your text here (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. Do not delete table.)

Chromosomal Pattern Diagnostic Significance (Yes, No or Unknown) Prognostic Significance (Yes, No or Unknown) Therapeutic Significance (Yes, No or Unknown) Notes
EXAMPLE:

Co-deletion of 1p and 18q

Yes No No EXAMPLE:

See chromosomal rearrangements table as this pattern is due to an unbalanced derivative translocation associated with oligodendroglioma (add reference).

editv4:Characteristic Chromosomal Aberrations / Patterns
The content below was from the old template. Please incorporate above.

Cytogenetic studies show that ATLL often has a complex abnormal karyotype without a single distinct abnormality. Observed recurrent abnormalities include trisomy for 3, 7 or 21 and monosomy for X as well as deletion of Y and abnormalities of chromosome 6 and 14. Chromosome 14 rearrangements involving TCRA and TCRD at 14q11 and TCL1 at 14q32 have been documented[18]. Frequent deletions in known fragile sites have been detected in over 500 patients[11].

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 as 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. Do not delete table.)

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
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.


editv4:Gene Mutations (SNV/INDEL)
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Over 10% of ATLL cases harbor mostly gain of function mutations. ATLL harbors multiple recurrent mutations in genes involved in the TCR-NF-κB pathway, tumor suppressors, transcription factors involved in cell growth and proliferation, apoptosis, and immune surveillance[19][17][20].

Gene Mutation Oncogene/Tumor Suppressor/Other Presumed Mechanism (LOF/GOF/Other; Driver/Passenger) Prevalence (COSMIC/TCGA/Other)
PLCG1 TCR – NF-κB Signaling GOF
PKCB TCR – NF-κB Signaling GOF
CARD11 TCR – NF-κB Signaling GOF
VAV1 TCR – NF-κB Signaling GOF
CD237 TCR – NF-κB Signaling GOF
RHOA RAS-RAF-ERK pathway GOF
IRF4 Transcription Factor GOF
NOTCH1 Transcription Factor GOF
FBXW7 Transcription Factor GOF
STAT3 Transcription Factor GOF
TNFAIP3/A20 TCR – NF-κB Signaling LOF
NFKBIA/IκBα TCR – NF-κB Signaling LOF
TRAF3 TCR – NF-κB Signaling LOF
CBLB TCR – NF-κB Signaling LOF
TP53 Tumor Suppressor LOF
CDKN2 Tumor Suppressor LOF
GATA3 Transcription Factor LOF
EP300 Transcription Factor LOF
FAS Apoptosis LOF
WWOX Apoptosis LOF
HLA-B Immune Surveillance LOF
B2M Immune Surveillance LOF
PD-L1 Immune Surveillance Amplification

Other Mutations

Type Gene/Region/Other
Concomitant Mutations EXAMPLE: IDH1 R123H
Secondary Mutations EXAMPLE: Trisomy 7
Mutually Exclusive EXAMPLE: EGFR Amplification

Epigenomic Alterations

Epigenetic alterations also result in dysregulated TCR/NF-κB signaling in ATLL. DNA hypermethylation of CpG islands is detected in 1/3rd of all ATLL patients. As a result, genes involved in Cys2-His2 (C2H2) zinc finger genes and those encoding MHC class I molecules are silenced[11].

ATLL patients have high expression of polycomb repressive complex (PRC) 2 components like EZH2, its homolog EZH1 and H3K27 methylase causing accumulation of trimethylation of H3K27 and altering the expression of over half of the genes. The severity of the disease is linked to continued down regulation of genes[21].

Genes and Main Pathways Involved

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Gene; Genetic Alteration Pathway Pathophysiologic Outcome
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
editv4:Genes and Main Pathways Involved
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The most important genes involved in the development and progress of ATLL are the Tax and HBZ contributed by the HTLV-1 virus and genes listed in gene mutations table (above) from the host. The main pathways involved are TCR-NF-κB signaling by gain of function and amplifications in PLCG1, VAV1 and FYN, CD28, PRKCB, CARD11, IRF4 and RHOA; and loss of function mutations or deletions in CBLB, TRAF, TNFAIP3 and CSNK1A1[11].

Genes involving the immune surveillance program are also heavy altered to evade the immune response either by deletions in MHC class1 molecules, CD58, FAS or constitutive activation of PD-L1.

Genes involved in the Lymphocyte activation and differentiation(IRF4, GATA3, IKZF2) are also altered.

Chemokine receptors including CCR4 and CCR7 are responsible for the infiltration of neoplastic cells into other organs along with activation of PI3K/AKT signaling.

The epigenetic mechanism is also exploited to alter gene expression and promote ATLL progression as explained above.

Genetic Diagnostic Testing Methods

Initial diagnosis of ATLL should include a comprehensive physical exam with skin evaluation and CT scans of the chest, abdomen and pelvis. The laboratory evaluation should include: a complete blood count (CBC), metabolic panel (serum electrolyte levels, calcium, creatinine and blood urea nitrogen) and serum LDH levels. Testing methods including PCR, Flow Cytometry, ELISA, serology, and immunohistochemistry in addition to morphologic studies may be employed to diagnose ATLL[10].

Familial Forms

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Additional Information

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Links

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References

(use the "Cite" icon at the top of the page) (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. 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.)

  1. Thiele, J. et al., (2017). Adult T-cell leukemia/lymphoma, 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, p363-367
  2. 2.0 2.1 Gessain, Antoine; et al. (2012). "Epidemiological Aspects and World Distribution of HTLV-1 Infection". Frontiers in Microbiology. 3: 388. doi:10.3389/fmicb.2012.00388. ISSN 1664-302X. PMC 3498738. PMID 23162541.
  3. Mehta-Shah, Neha; et al. (08 2017). "Adult T-Cell Leukemia/Lymphoma". Journal of Oncology Practice. 13 (8): 487–492. doi:10.1200/JOP.2017.021907. ISSN 1935-469X. PMC 6366298. PMID 28796966. Check date values in: |date= (help)
  4. Rocquain, Julien; et al. (2010-08-02). "Combined mutations of ASXL1, CBL, FLT3, IDH1, IDH2, JAK2, KRAS, NPM1, NRAS, RUNX1, TET2 and WT1 genes in myelodysplastic syndromes and acute myeloid leukemias". BMC cancer. 10: 401. doi:10.1186/1471-2407-10-401. ISSN 1471-2407. PMC 2923633. PMID 20678218.
  5. 5.0 5.1 Shimoyama, M. (1991-11). "Diagnostic criteria and classification of clinical subtypes of adult T-cell leukaemia-lymphoma. A report from the Lymphoma Study Group (1984-87)". British Journal of Haematology. 79 (3): 428–437. doi:10.1111/j.1365-2141.1991.tb08051.x. ISSN 0007-1048. PMID 1751370. Check date values in: |date= (help)
  6. Bunn, P. A.; et al. (1983-08-04). "Clinical course of retrovirus-associated adult T-cell lymphoma in the United States". The New England Journal of Medicine. 309 (5): 257–264. doi:10.1056/NEJM198308043090501. ISSN 0028-4793. PMID 6602943.
  7. Ohshima, Koichi (2007-06). "Pathological features of diseases associated with human T-cell leukemia virus type I". Cancer Science. 98 (6): 772–778. doi:10.1111/j.1349-7006.2007.00456.x. ISSN 1347-9032. PMID 17388788. Check date values in: |date= (help)
  8. Roncador, G.; et al. (2005-12). "FOXP3, a selective marker for a subset of adult T-cell leukaemia/lymphoma". Leukemia. 19 (12): 2247–2253. doi:10.1038/sj.leu.2403965. ISSN 0887-6924. PMID 16193085. Check date values in: |date= (help)
  9. Ishida, Takashi; et al. (2003-09-01). "Clinical significance of CCR4 expression in adult T-cell leukemia/lymphoma: its close association with skin involvement and unfavorable outcome". Clinical Cancer Research: An Official Journal of the American Association for Cancer Research. 9 (10 Pt 1): 3625–3634. ISSN 1078-0432. PMID 14506150.
  10. 10.0 10.1 NCCN Clinical Practice Guidelines in Oncology, T-Cell Lymphomas, Version 1.2021. Available at NCCN.org.
  11. 11.0 11.1 11.2 11.3 Kataoka, Keisuke; et al. (2015-11). "Integrated molecular analysis of adult T cell leukemia/lymphoma". Nature Genetics. 47 (11): 1304–1315. doi:10.1038/ng.3415. ISSN 1546-1718. PMID 26437031. Check date values in: |date= (help)
  12. Hishizawa, Masakatsu; et al. (2010-08-26). "Transplantation of allogeneic hematopoietic stem cells for adult T-cell leukemia: a nationwide retrospective study". Blood. 116 (8): 1369–1376. doi:10.1182/blood-2009-10-247510. ISSN 1528-0020. PMID 20479287.
  13. Hermine, Olivier; et al. (02 2018). "A Review of New Findings in Adult T-cell Leukemia-Lymphoma: A Focus on Current and Emerging Treatment Strategies". Advances in Therapy. 35 (2): 135–152. doi:10.1007/s12325-018-0658-4. ISSN 1865-8652. PMC 5818559. PMID 29411267. Check date values in: |date= (help)
  14. Itoyama, T.; et al. (2001-06-01). "Cytogenetic analysis and clinical significance in adult T-cell leukemia/lymphoma: a study of 50 cases from the human T-cell leukemia virus type-1 endemic area, Nagasaki". Blood. 97 (11): 3612–3620. doi:10.1182/blood.v97.11.3612. ISSN 0006-4971. PMID 11369658.
  15. Tsukasaki, K.; et al. (2001-06-15). "Comparative genomic hybridization analysis in adult T-cell leukemia/lymphoma: correlation with clinical course". Blood. 97 (12): 3875–3881. doi:10.1182/blood.v97.12.3875. ISSN 0006-4971. PMID 11389029.
  16. Oshiro, Aya; et al. (2006-06-01). "Identification of subtype-specific genomic alterations in aggressive adult T-cell leukemia/lymphoma". Blood. 107 (11): 4500–4507. doi:10.1182/blood-2005-09-3801. ISSN 0006-4971. PMID 16484591.
  17. 17.0 17.1 Kataoka, Keisuke; et al. (01 11, 2018). "Prognostic relevance of integrated genetic profiling in adult T-cell leukemia/lymphoma". Blood. 131 (2): 215–225. doi:10.1182/blood-2017-01-761874. ISSN 1528-0020. PMC 5757690. PMID 29084771. Check date values in: |date= (help)
  18. "Correlation of chromosome abnormalities with histologic and immunologic characteristics in non-Hodgkin's lymphoma and adult T cell leukemia-lymphoma. Fifth International Workshop on Chromosomes in Leukemia-Lymphoma". Blood. 70 (5): 1554–1564. 1987-11. ISSN 0006-4971. PMID 2889485. Check date values in: |date= (help)
  19. Kogure, Yasunori; et al. (2017-09). "Genetic alterations in adult T-cell leukemia/lymphoma". Cancer Science. 108 (9): 1719–1725. doi:10.1111/cas.13303. ISSN 1349-7006. PMC 5581529. PMID 28627735. Check date values in: |date= (help)
  20. Kataoka, Keisuke; et al. (2015-11). "Integrated molecular analysis of adult T cell leukemia/lymphoma". Nature Genetics. 47 (11): 1304–1315. doi:10.1038/ng.3415. ISSN 1546-1718. PMID 26437031. Check date values in: |date= (help)
  21. Fujikawa, Dai; et al. (2016-04-07). "Polycomb-dependent epigenetic landscape in adult T-cell leukemia". Blood. 127 (14): 1790–1802. doi:10.1182/blood-2015-08-662593. ISSN 1528-0020. PMID 26773042.

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: “Adult T-cell leukaemia/lymphoma”. Compendium of Cancer Genome Aberrations (CCGA), Cancer Genomics Consortium (CGC), updated 09/6/2024, https://ccga.io/index.php/HAEM5:Adult_T-cell_leukaemia/lymphoma.