Natural Killer Cell Precursor Acute Lymphoma/Leukemia Presenting in an Infant

2001 ◽  
Vol 125 (3) ◽  
pp. 413-418
Author(s):  
Yasodha Natkunam ◽  
Athena M. Cherry ◽  
P. Joanne Cornbleet
Keyword(s):  
Natural Killer ◽  
Nk Cell ◽  
Killer Cell ◽  
Cell Precursor ◽  
Barr Virus ◽  
Hla Dr ◽  
Blue Cell ◽  
Epstein Barr ◽  
Round Blue Cell Tumor ◽  
Hematolymphoid Neoplasms

Abstract Lymphoma/leukemia derived from immature natural killer (NK) cells occur most commonly in adults and are characterized by blastic cytologic features and an aggressive outcome. Predilection for extranodal sites and absence of the Epstein-Barr virus associated with mature NK cell malignancies further distinguish this entity. We present a NK precursor acute lymphoma presenting with multiple masses in an infant without circulating blasts or marrow replacement by disease. The diagnostic difficulty arose from several factors, including young age, presentation with multiple masses, blastic cytologic features mistaken for a small, round, blue cell tumor, and the absence of lineage-specific markers. The CD56+, CD34+, CD33+, MPO−, cytoplasmic CD3+, CD45−, CD7−, HLA-DR−, and TdT− immunophenotype of this neoplasm overlaps with previously reported cases of myeloid/NK precursor acute leukemia and blastic NK cell lymphoma/leukemia. This case emphasizes the need for a strong index of suspicion to recognize this rare entity and to distinguish it from solid tumors and other hematolymphoid neoplasms that occur in infancy.

scholarly journals Natural Killer Cell Responses during Human γ-Herpesvirus Infections

Vaccines ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 655
Author(s):  
Christian Münz
Keyword(s):  
Nk Cells ◽  
Natural Killer ◽  
Epstein Barr Virus ◽  
Nk Cell ◽  
Killer Cell ◽  
Kaposi Sarcoma ◽  
Antibody Dependent Cellular Cytotoxicity ◽  
Barr Virus ◽  
Cell Responses ◽  
Epstein Barr

Herpesviruses are main sculptors of natural killer (NK) cell repertoires. While the β-herpesvirus human cytomegalovirus (CMV) drives the accumulation of adaptive NKG2C-positive NK cells, the human γ-herpesvirus Epstein–Barr virus (EBV) expands early differentiated NKG2A-positive NK cells. While adaptive NK cells support adaptive immunity by antibody-dependent cellular cytotoxicity, NKG2A-positive NK cells seem to preferentially target lytic EBV replicating B cells. The importance of this restriction of EBV replication during γ-herpesvirus pathogenesis will be discussed. Furthermore, the modification of EBV-driven NK cell expansion by coinfections, including by the other human γ-herpesvirus Kaposi sarcoma-associated herpesvirus (KSHV), will be summarized.

Quantification of circulating Epstein-Barr virus (EBV) DNA in the diagnosis and monitoring of natural killer cell and EBV-positive lymphomas in immunocompetent patients

Blood ◽  
2004 ◽  
Vol 104 (1) ◽  
pp. 243-249 ◽  
Author(s):  
Wing-Yan Au ◽  
Annie Pang ◽  
Carolyn Choy ◽  
Chor-Sang Chim ◽  
Yok-Lam Kwong
Keyword(s):  
Multivariate Analysis ◽  
Natural Killer ◽  
Epstein Barr Virus ◽  
Nk Cell ◽  
Disease Stage ◽  
Tumor Biomarker ◽  
Barr Virus ◽  
Ebv Dna ◽  
Epstein Barr ◽  
Immunocompetent Patients

Abstract In Epstein-Barr-virus (EBV)–positive lymphomas in immunocompetent patients, release of EBV DNA from tumor cells into the plasma might be useful for disease monitoring and prognostication. To test this hypothesis, we quantified serially plasma EBV DNA by quantitative polymerase chain reaction in 39 cases of EBV-positive (natural killer [NK] cell, n = 23; T cell, n = 8; B cell, n = 4; Hodgkin, n = 4) lymphomas. As control, EBV DNA was undetectable in 34 cases of EBV-negative lymphomas at diagnosis and during chemotherapy. In all cases of EBV-positive lymphomas, EBV DNA was detectable (105-1010 copies/mL) at diagnosis. It paralleled the clinical course, with EBV DNA becoming undetectable at remission and remaining elevated in refractory disease. On multivariate analysis, high-presentation EBV DNA (> 7.3 × 107 copies/mL) was significantly associated with an inferior overall survival (OS). Subgroup analysis of NK cell lymphomas, the largest cohort in this study, showed that presentation EBV DNA was correlated with disease stage and lactate dehydrogenase. On multivariate analysis, high-presentation EBV DNA (> 6.1 × 107 copies/mL) was significantly associated with an inferior disease-free survival. During treatment, patients with EBV DNA that showed further increases or failed to become undetectable had significantly inferior OS. In EBV-positive lymphomas, plasma EBV DNA is valuable as a tumor biomarker and for prognostication.

scholarly journals Hydroa Vacciniforme and Hydroa Vacciniforme-Like Lymphoproliferative Disorder: A Spectrum of Disease Phenotypes Associated with Ultraviolet Irradiation and Chronic Epstein–Barr Virus Infection

2020 ◽  
Vol 21 (23) ◽  
pp. 9314
Author(s):  
Chien-Chin Chen ◽  
Kung-Chao Chang ◽  
L Jeffrey Medeiros ◽  
Julia Yu-Yun Lee
Keyword(s):  
T Cell ◽  
Natural Killer ◽  
Ultraviolet Irradiation ◽  
Epstein Barr Virus ◽  
Nk Cell ◽  
Current Evidence ◽  
Barr Virus ◽  
Ebv Infection ◽  
Hydroa Vacciniforme ◽  
Epstein Barr

Hydroa vacciniforme (HV) is a rare form of photosensitivity disorder in children and is frequently associated with Epstein–Barr virus (EBV) infection, whereas HV-like lymphoproliferative disorders (HVLPD) describe a spectrum of EBV-associated T-cell or natural killer (NK)-cell lymphoproliferations with HV-like cutaneous manifestations, including EBV-positive HV, atypical HV, and HV-like lymphoma. Classic HV occurs in childhood with papulovesicules on sun-exposed areas, which is usually induced by sunlight and ultraviolet irradiation, and mostly resolves by early adult life. Unlike classic HV, atypical or severe HV manifests itself as recurrent papulovesicular eruptions in sun-exposed and sun-protected areas associated occasionally with facial edema, fever, lymphadenopathy, oculomucosal lesions, gastrointestinal involvement, and hepatosplenomegaly. Notably, atypical or severe HV may progress to EBV-associated systemic T-cell or natural killer (NK)-cell lymphoma after a chronic course. Although rare in the United States and Europe, atypical or severe HV and HV-like lymphoma are predominantly reported in children from Asia and Latin America with high EBV DNA levels, low numbers of NK cells, and T cell clones in the blood. In comparison with the conservative treatment used for patients with classic HV, systemic therapy such as immunomodulatory agents is recommended as the first-line therapy for patients with atypical or severe HV. This review aims to provide an integrated overview of current evidence and knowledge of HV and HVLPD to elucidate the pathophysiology, practical issues, environmental factors, and the impact of EBV infection.

scholarly journals Anti‐tumor effects of suberoylanilide hydroxamic acid on Epstein–Barr virus‐associated T cell and natural killer cell lymphoma

2014 ◽  
Vol 105 (6) ◽  
pp. 713-722 ◽  
Author(s):  
Mohammed N.A. Siddiquey ◽  
Hikaru Nakagawa ◽  
Seiko Iwata ◽  
Tetsuhiro Kanazawa ◽  
Michio Suzuki ◽  
...  
Keyword(s):  
T Cell ◽  
Natural Killer Cell ◽  
Natural Killer ◽  
Hydroxamic Acid ◽  
Epstein Barr Virus ◽  
Cell Lymphoma ◽  
Killer Cell ◽  
Suberoylanilide Hydroxamic Acid ◽  
Barr Virus ◽  
Epstein Barr

Epstein-Barr virus-negative extranodal “true” natural killer-cell lymphoma harbouring a KDM6A mutation

2017 ◽  
Vol 36 (1) ◽  
pp. 328-335 ◽  
Author(s):  
Naoko Tsuyama ◽  
Reimi Asaka ◽  
Akito Dobashi ◽  
Satoko Baba ◽  
Yuko Mishima ◽  
...  
Keyword(s):  
Natural Killer Cell ◽  
Natural Killer ◽  
Epstein Barr Virus ◽  
Cell Lymphoma ◽  
Killer Cell ◽  
Natural Killer Cell Lymphoma ◽  
Barr Virus ◽  
Epstein Barr

Characterization of a Novel Human Natural Killer-Cell Line (NK-YS) Established From Natural Killer Cell Lymphoma/Leukemia Associated With Epstein-Barr Virus Infection

Blood ◽  
1998 ◽  
Vol 92 (4) ◽  
pp. 1374-1383 ◽  
Author(s):  
Junjiro Tsuchiyama ◽  
Tadashi Yoshino ◽  
Masaharu Mori ◽  
Eisaku Kondoh ◽  
Takeshi Oka ◽  
...  
Keyword(s):  
Natural Killer Cell ◽  
Natural Killer ◽  
Cell Line ◽  
Stromal Cell ◽  
Southern Blotting ◽  
Nk Cell ◽  
Cell Lymphoma ◽  
Killer Cell ◽  
Leukemic Cells ◽  
Epstein Barr

A novel cell line was established from a patient with a leukemic-state nasal angiocentric natural killer (NK) cell lymphoma with systemic skin infiltration. The morphology of the leukemic cells was large-granular-lymphocyte (LGL), and their immunophenotype was CD2+, CD3−, CD5+, CD7+, CD16−, CD56+, and CD57−. The presence of Epstein-Barr viral (EBV) genome was shown in specimens from the patient’s nose, skin, and peripheral blood by in situ hybridization using an EBV-encoded small RNA-1 probe or by Southern blotting using a terminal-repeat probe of the EBV genome. Leukemic cells were cocultured with a mouse stromal cell line (SPY3-2) in the presence of 100 U/mL recombinant human interleukin-2 and a novel stromal cell-independent cell line, NK-YS, was established. The NK-YS cells showed LGL morphology and expressed surface CD2, CD5, CD7, CD25, CD56, and CD95. The NK-YS cells retained cytotoxicity against K562 and Jurkat cells. A Southern blotting using a terminal-repeat probe of EBV showed that NK-YS and fresh leukemic cells had a clonal EBV genome, whereas the T-cell receptor β and γ chain genes of NK-YS were not rearranged. In an immunocytochemical analysis, the NK-YS cells showed a type-II latent infection of EBV. The NK-YS cells preserved the original characteristics of NK cell lymphoma/leukemia and will be a useful tool for the study of biological characteristics of EBV-associated nasal angiocentric NK cell lymphoma/leukemia. © 1998 by The American Society of Hematology.

Sign in / Sign up

Export Citation Format

Share Document