Lymphoid leukemia
| Lymphoid leukemia | |
|---|---|
| Other names | Lymphocytic, lymphogenous, lymphoblastic leukemias |
| Specialty | Oncology,hematology |
Lymphoid leukemiasare a group ofleukemiasaffecting circulatinglymphocytes,a type ofwhite blood cell.The lymphocytic leukemias are closely related tolymphomasof the lymphocytes, to the point that some of them are unitary disease entities that can be called by either name (for example,adult T-cell leukemia/lymphoma). Such diseases are alllymphoproliferative disorders.Most lymphoid leukemias involve a particular subtype of lymphocytes, theB cells.
Classification
[edit]Historically, they have been most commonly divided by the stage of maturation at which the clonal (neoplastic) lymphoid population stopped maturing:[citation needed]
However, the influential WHO Classification (published in 2001) emphasized a greater emphasis on cell lineage. To this end, lymphoid leukemias can also be divided by the type of cells affected:
The most common type of lymphoid leukemia isB-cell chronic lymphocytic leukemia.
B-cell leukemias
[edit]B-cell leukemia describes several different types of lymphoid leukemia which affectB cells.
| Comparison of most common B-cell leukemias | Incidence | Histopathology | Cell markers | Comments |
|---|---|---|---|---|
| B-cell chronic lymphocytic leukemia (ICD-O:9823/3) |
30% of all leukemias. Also 3 to 4% of lymphomas in adults[1] | Small resting lymphocytes mixed with variable number of large activated cells. Lymph nodes are diffuselyeffaced[1] | CD5,surfaceimmunoglobulin[1] | Occurs in older adults. Usually involves lymph nodes, bone marrow and spleen. Most patients have peripheral blood involvement. Indolent.[1] |
| Precursor B-cell lymphoblastic leukemia (ICD-O: 9835/3-9836/3) |
85% ofacute leukemiasin childhood,[1]Less common in adults[1] | Lymphoblastswith irregular nuclear contours, condensed chromatin, small nucleoli and scant cytoplasm without granules.[1] | TdT,CD19[1] | Usually presents asacute leukemia[1] |
Other types include (withICD-Ocode):
- 9826/3 –Acute lymphoblastic leukemia,mature B-cell type
- 9833/3 –B-cell prolymphocytic leukemia
- 9940/3 –Hairy cell leukemia
T-cell leukemias
[edit]T-cell leukemia describes several different types of lymphoid leukemias which affectT cells.[citation needed]
The most common T-cell leukemia isprecursor T-cell lymphoblastic leukemia.[1]It causes 15% of acute leukemias in childhood, and also 40% of lymphomas in childhood.[1]It is most common inadolescentmales.[1]Its morphology is identical to that ofprecursor B-cell lymphoblastic leukemia.[1]Cell markers include TdT,CD2,CD7.[1]It often presents as amediastinal massbecause of involvement of thethymus.[1]It is highly associated withNOTCH1mutations.[1]
Other types include:
In practice, it can be hard to distinguish T-cell leukemia fromT-cell lymphoma,and they are often grouped together.
NK cell leukemia
[edit]Aggressive NK-cell leukemia(ANKL) is a lymphoid leukemia that is a deficiency NK cells. Not very much is known about this disease due to its rarity, but it is highly aggressive. A majority of patients with NK cell leukemia die within a year of diagnosis, and for ANKL in particular, half of patients die within two months.[2]
Diagnosis
[edit]The requirements for diagnosing ANKL are as follows:[3]
- Immature-looking NK cells
- Certain immunophenotypes[4]
- Germline configuration genes: TCR-β and IgH
- Restricted cytotoxicity
TheT-cell receptor(TCR) is an important factor when ANKL is being diagnosed along withT-cell leukemia.The TCR gene transcripts are normally positive for ANKL.[5]Current Research is attempting to find the causation of ANKL. So far, the researchers have concluded that lineage of the T-cell receptor gene does not predict the behavior of the disease.
Treatment
[edit]ANKL is treated similarly to mostB-cell lymphomas.Anthracycline-containingchemotherapy regimensare commonly offered as the initial therapy. Some patients may receive astem cell transplant.[6][7]
Overall survivaldepends on thestageof the cancer when treatment is initiated, and on a composite of numerous risk factors. The median time from diagnosis to death is less than 1 year in patients overall. Patients diagnosed early and/or with fewer risk factors can sometimes enter complete remission and expect much longer survival.[2]
Diagnosis
[edit]Flow cytometryis a diagnostic tool in order to count/visualize the amount of lymphatic cells in the body. T cells, B cells and NK cells are nearly impossible to distinguish under a microscope, therefore one must use a flow cytometer to distinguish them.
Treatment
[edit]Targeted therapy
[edit]Several molecular tumor profiling protocols have been initiated in Europe (e.g., MOSCATO-01, iTHER, and ESMART) to identify actionable lesions for targeted treatment in specific subgroups of patients.[8]
NK cell therapy
[edit]Natural killer (NK) cell therapy is used in pediatrics for children with relapsed lymphoid leukemia. These patients normally have a resistance to chemotherapy, therefore, in order to continue on, must receive some kind of therapy. In some cases, NK cell therapy is a choice.[9]
NK cells are known for their ability to eradicate tumor cells without any prior sensitization to them.[10]One problem when using NK cells in order to fight off lymphoid leukemia is the fact that it is hard to amount enough of them to be effective.[10]One can receive donations of NK cells from parents or relatives through bone marrow transplants. There are also the issues of cost, purity and safety.[11]Unfortunately, there is always the possibility ofGraft vs host diseasewhile transplanting bone marrow.
NK cell therapy is a possible treatment for many different cancers such asMalignant glioma.[12]
References
[edit]- ^abcdefghijklmnopTable 12-8 in:Mitchell, Richard Sheppard; Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson (2007).Robbins Basic Pathology.Philadelphia: Saunders.ISBN978-1-4160-2973-1.8th edition.
- ^abSuzuki R, Suzumiya J, Yamaguchi M, Nakamura S, Kameoka J, Kojima H, Abe M, Kinoshita T, Yoshino T, Iwatsuki K, Kagami Y, Tsuzuki T, Kurokawa M, Ito K, Kawa K, Oshimi K (May 2010)."Prognostic factors for mature natural killer (NK) cell neoplasms: aggressive NK cell leukemia and extranodal NK cell lymphoma, nasal type".Ann. Oncol.21(5): 1032–40.doi:10.1093/annonc/mdp418.PMID19850638.
- ^Oshimi K (July 2003). "Leukemia and lymphoma of natural killer lineage cells".Int. J. Hematol.78(1): 18–23.doi:10.1007/bf02983235.PMID12894846.S2CID24785150.
- ^Landay AL, Muirhead KA (July 1989). "Procedural guidelines for performing immunophenotyping by flow cytometry".Clin. Immunol. Immunopathol.52(1): 48–60.doi:10.1016/0090-1229(89)90192-x.PMID2656019.
- ^Hong M, Lee T, Young Kang S, Kim SJ, Kim W, Ko YH (May 2016)."Nasal-type NK/T-cell lymphomas are more frequently T rather than NK lineage based on T-cell receptor gene, RNA, and protein studies: lineage does not predict clinical behavior".Mod. Pathol.29(5): 430–43.doi:10.1038/modpathol.2016.47.PMID27015135.
- ^Mercadal S, Briones J, Xicoy B, Pedro C, Escoda L, Estany C, Camós M, Colomo L, Espinosa I, Martínez S, Ribera JM, Martino R, Gutiérrez-García G, Montserrat E, López-Guillermo A (May 2008)."Intensive chemotherapy (high-dose CHOP/ESHAP regimen) followed by autologous stem-cell transplantation in previously untreated patients with peripheral T-cell lymphoma".Ann. Oncol.19(5): 958–63.doi:10.1093/annonc/mdn022.PMID18303032.
- ^Reimer P, Schertlin T, Rüdiger T, Geissinger E, Roth S, Kunzmann V, Weissinger F, Nerl C, Schmitz N, Müller-Hermelink HK, Wilhelm M (2004). "Myeloablative radiochemotherapy followed by autologous peripheral blood stem cell transplantation as first-line therapy in peripheral T-cell lymphomas: first results of a prospective multicenter study".Hematol. J.5(4): 304–11.doi:10.1038/sj.thj.6200359.PMID15297846.
- ^Cordo V, Meijerink J (January 2021)."T-cell Acute Lymphoblastic Leukemia: A Roadmap to Targeted Therapies".Blood Cancer Discovery.2(1): 19–31.doi:10.1158/2643-3230.BCD-20-0093.PMC8447273.PMID34661151.
- ^Rubnitz JE, Inaba H, Kang G, Gan K, Hartford C, Triplett BM, Dallas M, Shook D, Gruber T, Pui CH, Leung W (August 2015)."Natural killer cell therapy in children with relapsed leukemia".Pediatr Blood Cancer.62(8): 1468–72.doi:10.1002/pbc.25555.PMC4634362.PMID25925135.
- ^abSakamoto, N; Ishikawa, T; Kokura, S; Okayama, T; Oka, K; Ideno, M; Sakai, F; Kato, A; Tanabe, M; Enoki, T; Mineno, J; Naito, Y; Itoh, Y; Yoshikawa, T (2015)."Phase I clinical trial of autologous NK cell therapy using novel expansion method in patients with advanced digestive cancer".Journal of Translational Medicine.13:277.doi:10.1186/s12967-015-0632-8.PMC4548900.PMID26303618.
- ^Bachanova, Veronika; Miller, Jeffrey S. (2014)."NK Cells in Therapy of Cancer".Critical Reviews in Oncogenesis.19(1–2): 133–41.doi:10.1615/CritRevOncog.2014011091.PMC4066212.PMID24941379.
- ^Ogbomo, Henry; Cinatl, Jindrich; Mody, Christopher H.; Forsyth, Peter A. (2011). "Immunotherapy in gliomas: Limitations and potential of natural killer (NK) cell therapy".Trends in Molecular Medicine.17(8): 433–41.doi:10.1016/j.molmed.2011.03.004.PMID21507717.