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natural killer cell lymphoma

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https://www.readbyqxmd.com/read/29140757/new-insights-into-lymphoma-pathogenesis
#1
Kojo S J Elenitoba-Johnson, Megan S Lim
Lymphomas represent clonal proliferations of lymphocytes that are broadly classified based upon their maturity (peripheral or mature versus precursor) and lineage (B cell, T cell, and natural killer cell). Insights into the pathogenetic mechanisms involved in lymphoma impact the classification of lymphoma and have significant implications for the diagnosis and clinical management of patients. Serial scientific and technologic advances over the last 30 years in immunology, cytogenetics, molecular biology, gene expression profiling, mass spectrometry-based proteomics, and, more recently, next-generation sequencing have contributed to greatly enhance our understanding of the pathogenetic mechanisms in lymphoma...
November 15, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/29132010/inhibition-of-sonic-hedgehog-signaling-blocks-cell-migration-and-growth-but-induces-apoptosis-via-suppression-of-foxq1-in-natural-killer-t-cell-lymphoma
#2
Pingyi Liu, Lingling Chen
The present study explored the effects of Forkhead box Q1 (FOXQ1) on cell proliferation, cell cycle and apoptosis via the Sonic hedgehog (Shh) pathway in Natural killer/T-cell lymphoma (NKTCL). Quantitative real time-polymerase chain reaction (qRT-PCR) was performed to detect FOXQ1 expression in 117 NKTCL patients and 120 healthy controls. Additionally, FOXQ1 expression in NKTCL cell lines (HANK-1, NK-92, SNK-6, SNT-8 and YT) was determined by western blotting and qRT-PCR. SNK-6 cells were transfected with FOXQ1-shRNA or Shh pathway inhibitor Cyclopamine/recombinant protein Shh...
November 10, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29118009/immunotherapy-targeting-4-1bb-mechanistic-rationale-clinical-results-and-future-strategies
#3
Cariad Chester, Miguel F Sanmamed, Jun Wang, Ignacio Melero
4-1BB (CD137, TNFRSF9) is an inducible costimulatory receptor expressed on activated T and natural killer (NK) cells. 4-1BB ligation on T cells triggers a signaling cascade that results in upregulation of antiapoptotic molecules, cytokine secretion, and enhanced effector function. In dysfunctional T cells that have a decreased cytotoxic capacity, 4-1BB ligation demonstrates a potent ability to restore effector functions. On NK cells, 4-1BB signaling can increase antibody-dependent cell-mediated cytotoxicity...
November 8, 2017: Blood
https://www.readbyqxmd.com/read/29108312/tumor-necrosis-and-complete-resection-has-significant-impacts-on-survival-in-patients-with-limited-stage-upper-aerodigestive-tract-nk-t-cell-lymphoma
#4
Moo-Kon Song, Joo-Seop Chung, Ho-Young Yhim, Sung-Nam Lim, Seong-Jang Kim, Yeon-Hee Han, Hye-Kyung Shim, Sung-Hoon Jung, Je-Jung Lee, Deok-Hwan Yang
Tumor necrosis (TN) is associated with worse prognosis in several solid cancers. Whether TN predicts poor outcome in natural killer cell / T cell lymphoma (NKTCL) is unclear. We investigated the clinical impact of TN on survival and other novel prognostic parameters in upper aero-digestive tract (UAT) NKTCL of 100 patients with limited stage. TN was significantly associated with poor performance status (p = 0.049), high Korean Prognostic Index score (p = 0.024), high C-reactive protein/albumin ratio (p = 0...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29105525/pegasparaginase-silent-inactivation-during-therapy-for-nk-t-cell-lymphoma
#5
Deeter R Neumann, Bernard L Marini, Tycel J Phillips, Ryan A Wilcox, Tera L Mayer, Anna Brown, Anthony J Perissinotti
Natural Killer/T cell (NK/T cell) lymphoma is a rare, yet aggressive T cell lymphoma, which often displays resistance to traditional chemotherapies. Asparagainse (ASNase), through its unique mechanism of action, has become a vital component in the treatment of NK/T cell lymphoma. However, because ASNase is of bacterial origin, antibody formation can render the therapy ineffective, even in the absence of clinical hypersensitivity, which has been coined 'silent inactivation.' While the phenomenon of silent inactivation of PEG-ASNase is well documented in the treatment of ALL, it has not been described in NK/T cell lymphoma patients...
November 6, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29078283/humanized-mouse-model-supports-development-function-and-tissue-residency-of-human-natural-killer-cells
#6
Dietmar Herndler-Brandstetter, Liang Shan, Yi Yao, Carmen Stecher, Valerie Plajer, Melanie Lietzenmayer, Till Strowig, Marcel R de Zoete, Noah W Palm, Jie Chen, Catherine A Blish, Davor Frleta, Cagan Gurer, Lynn E Macdonald, Andrew J Murphy, George D Yancopoulos, Ruth R Montgomery, Richard A Flavell
Immunodeficient mice reconstituted with a human immune system represent a promising tool for translational research as they may allow modeling and therapy of human diseases in vivo. However, insufficient development and function of human natural killer (NK) cells and T cell subsets limit the applicability of humanized mice for studying cancer biology and therapy. Here, we describe a human interleukin 15 (IL15) and human signal regulatory protein alpha (SIRPA) knock-in mouse on a Rag2(-/-) Il2rg(-/-) background (SRG-15)...
November 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29077846/sequential-chemotherapy-radiotherapy-was-comparable-with-concurrent-chemoradiotherapy-for-stage-i-ii-nk-t-cell-lymphoma
#7
Y L Kwong, S J Kim, E Tse, S Y Oh, J Y Kwak, H S Eom, Y R Do, Y C Mun, S R Lee, H J Shin, C Suh, S S Chuang, Y S Lee, S T Lim, K Izutsu, R Suzuki, T Relander, F d'Amore, N Schmitz, A Jaccard, W S Kim
Background: In stage I/II natural killer (NK)/T-cell lymphoma, concurrent chemoradiotherapy (CCRT) had previously been shown to result in superior outcome compared with anthracycline-containing regimens, which have since been considered ineffective. The role of CCRT in comparison with approaches employing non-anthracycline-containing chemotherapy (CT) and sequential radiotherapy (RT) in such patients remains to be defined. Patients and methods: Three hundred and three untreated patients (207 men, 96 women; median age: 51, 18-86, years) with stage I/II NK/T-cell lymphoma who had received non-anthracycline-containing regimens were collected from an international consortium and retrospectively analyzed...
October 24, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29063643/primary-central-nervous-system-extranodal-nasal-type-natural-killer-t-cell-lymphoma-with-cd20-expression
#8
Dujuan Li, Fangfang Fu, Lifei Lian
We report a unique case of primary CNS extranodal natural killer/T-cell lymphoma (PCNS ENKTCL) with CD20 expression and the monoclonal rearrangement of Ig heavey chain (IgH) gene. Resection specimens were evaluated using HE-stained sections, immunohistochemistry, in situ hybridization and PCR. Histopathologic examination, immunohistochemistry and molecular studies showed the intermediate-sized lymphoma cells expressing CD2, CD3ε, granzyme B, TIA-1, CD20 and Epstein-Barr virus-encoded RNA, with germline T-cell receptor gene and the monoclonal rearrangement of IgH gene...
October 24, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/29056540/a-phase-ii-study-of-methotrexate-etoposide-dexamethasone-and-pegaspargase-sandwiched-with-radiotherapy-in-the-treatment-of-newly-diagnosed-stage-ie-to-iie-extranodal-natural-killer-t-cell-lymphoma-nasal-type
#9
Peng-Peng Xu, Jie Xiong, Shu Cheng, Xia Zhao, Chao-Fu Wang, Gang Cai, Hui-Juan Zhong, Heng-Ye Huang, Jia-Yi Chen, Wei-Li Zhao
BACKGROUND: A phase II study of methotrexate, etoposide, dexamethasone, and pegaspargase (MESA) sandwiched with radiotherapy for newly diagnosed, stage IE-IIE extranodal natural-killer/T-cell lymphoma, nasal-type (ENKTL) was conducted to explore its clinical efficacy and safety, as well as novel serum biomarkers upon anti-metabolic treatment. METHODS: Four cycles of MESA sandwiched with radiotherapy were administered. The primary end point was the overall response rate (ORR)...
November 2017: EBioMedicine
https://www.readbyqxmd.com/read/29035394/infusion-of-autograft-natural-killer-cell-cd14-hla-dr-dim-cell-ratio-predicts-survival-in-lymphoma-post-autologous-stem-cell-transplantation
#10
A Kansagra, D J Inwards, S M Ansell, I N Micallef, P B Johnston, W J Hogan, S N Markovic, L F Porrata
The infusion of autograft absolute lymphocyte count (A-ALC) and autograft natural killer cells (A-NKC) are prognostic factors for overall survival (OS) and PFS in non-Hodgkin's lymphoma (NHL) patients undergoing autologous peripheral blood hematopoietic stem cell transplantation (APBHSCT). The human monocytic CD14(+)HLA-DR(DIM) cells are associated with worse prognosis in NHL. Thus, we investigated whether the autograft A-NKC/A-CD14(+)HLA-DR(DIM) ratio predicts survival in NHL. In a total of 111 NHL patients, we analyzed apheresis collection samples for the content of A-NKC and A-CD14(+)HLA-DR(DIM)...
October 16, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29025287/-incidence-and-treatment-of-extranodal-natural-killer-t-cell-lymphoma-nasal-type-hungarian-experiences
#11
Annamária Bakos, Árpád Szomor, Tamás Schneider, Zsófia Miltényi, Imelda Marton, Zita Borbényi, Judit Pammer, László Krenács, Enikő Bagdi, Klára Piukovics
INTRODUCTION: Extranodal natural killer/T (NK/T) cell lymphoma, nasal type (ENKTL) represents a rare subtype of T-cell lymphomas with aggressive clinical behavior according to WHO 2016 classification. AIM: ENKTL has distinctive geographic distribution with higher incidence in Asia and Latin America (10% of all non-Hodgkin lymphoma cases), than in Europe and North America (<1%). ENKTL tipically origins from nasopharynx and upper aerodigestive tract. Anthracycline-based chemotherapy regimens are largely ineffective in the treatment of ENKTL...
October 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/29018171/dual-enhancement-of-t-and-nk-cell-function-by-pulsatile-inhibition-of-ship1-improves-antitumor-immunity-and-survival
#12
Matthew Gumbleton, Raki Sudan, Sandra Fernandes, Robert W Engelman, Christopher M Russo, John D Chisholm, William G Kerr
The success of immunotherapy in some cancer patients has revealed the profound capacity for cytotoxic lymphocytes to eradicate malignancies. Various immunotherapies work by blocking key checkpoint proteins that suppress immune cell activity. The phosphatase SHIP1 (SH2-containing inositol polyphosphate 5-phosphatase) limits signaling from receptors that activate natural killer (NK) cells and T cells. However, unexpectedly, genetic ablation studies have shown that the effector functions of SHIP1-deficient NK and T cells are compromised in vivo...
October 10, 2017: Science Signaling
https://www.readbyqxmd.com/read/29016569/efficacy-of-pegaspargase-etoposide-methotrexate-and-dexamethasone-in-newly-diagnosed-advanced-stage-extra-nodal-natural-killer-t-cell-lymphoma-with-the-analysis-of-the-prognosis-of-whole-blood-ebv-dna
#13
J-H Liang, L Wang, R Peter Gale, W Wu, Y Xia, L Fan, J-Y Li, W Xu
No abstract text is available yet for this article.
September 15, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28982299/multivariate-analysis-of-prognosis-for-patients-with-natural-killer-t-cell-lymphoma-associated-hemophagocytic-lymphohistiocytosis
#14
Zhili Jin, Yini Wang, Jingshi Wang, Lin Wu, Ruijun Pei, Wenyuan Lai, Zhao Wang
OBJECTIVE: A major cause of hemophagocytic lymphohistiocytosis (HLH) is malignant neoplasms of the blood system, among which NK/T cell lymphoma is one of the most common risk factors. Patients with NK/T cell lymphoma hemophagocytic lymphohistiocytosis (NK/T-LAHS) have a worse prognosis and higher mortality. We aimed to explore the factors that affect the prognosis of NK/T-LAHS. METHODS: Clinical data of 42 patients with NK/T-LAHS diagnosed by Beijing Friendship Hospital from June 2008 to June 2016 were analyzed retrospectively...
October 6, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28980601/-the-clinical-observation-of-nk-t-cell-lymphoma-of-the-nasal-type
#15
A B Turovsky, N A Shostak, M E Artemyev, N K Khuazheva, T P Bessarab, P L Chumakov, A V Artemieva-Karelova
The objective of the present work was to present the results of the clinical analysis of the patient presenting with natural killer (NK)/T-cell lymphoma of the nasal type. We undertook the analysis of the medical documentation concerning the case of interest. It was shown that the development of progressive perforation of the nasal septum and the pronounced destructive changes in the intranasal and adjacent structures following the endonasal surgical interventions made necessary differential diagnostics between the condition under consideration and certain latent disorders (such as Wegener's granulomatosis, leprosy, syphilis, leishmaniasis, dirofilariasis tuberculosis, etc...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28980517/comparison-of-chemoradiotherapy-with-radiotherapy-alone-for-early-stage-extranodal-natural-killer-t-cell-lymphoma-nasal-type-in-elderly-patients
#16
Chang Su, Kevin A Nguyen, Harrison X Bai, Dhikshitha Balaji, Ya Cao, Giorgos Karakousis, Paul J Zhang, Guiying Zhang, Rong Xiao
It remains controversial whether concurrent or subsequent chemoradiotherapy (CRT) provides additional survival benefits when compared to radiotherapy (RT) alone in localized extranodal natural killer/T-cell lymphoma (ENKTL), nasal type We identified 248 patients from the US National Cancer Data Base who were diagnosed with localized ENKTL from 2004-2014; 68.9% received CRT and 31.1% received RT alone. Over time, the use of CRT increased, while the use of RT alone decreased (p < .001). On multivariate analysis, CRT was associated with longer OS than RT alone (HR: 0...
October 5, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28966520/epstein-barr-virus-associated-vesiculopapular-eruption-on-the-face-of-a-patient-with-natural-killer-t-cell-lymphoma
#17
Ji Soo Lim, Tae Min Kim, Kwang Hyun Cho
Unlike typical hydroa vacciniforme (HV), Epstein-Barr virus (EBV)-associated HV-like eruption is more variable in its clinical manifestations. In some patients, progression to lymphoma or leukemia has been reported, which are characterized by the T-cell immunophenotype. Here, we report the first Korean case of EBV-associated vesiculopapular eruption on the face of a patient with natural killer (NK)/T cell lymphoma. A 32-year-old Korean man presented with a late adolescent-onset recurrent necrotic papulovesicles on his face...
October 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28966461/natural-killer-t-cell-lymphoma-invading-the-orbit-and-globe
#18
Lance J Lyons, Ivan Vrcek, Marie Somogyi, Kevin Taheri, Joan H Admirand, Saradha Chexal, Demetrius F Loukas, Tanuj Nakra
Natural killer/T-cell lymphomas are extremely rare and carry high mortality rates. Epidemiologically, these cancers tend to affect mainly Asian and South American patients and are associated with Epstein-Barr virus seropositivity. This report details a 78-year-old Vietnamese woman who presented initially with vitritis of unknown cause, but later developed proptosis and conjunctival involvement as her disease spread. Biopsies of the orbit, ethmoid sinus, and conjunctiva were found to be significant for natural killer/T-cell lymphoma...
October 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28947989/intensity-modulated-radiotherapy-has-superior-outcomes-to-three-dimensional-conformal-radiotherapy-in-patients-with-stage-ie-iie-extranodal-nasal-type-natural-killer-t-cell-lymphoma
#19
Yi-Yang Li, Hai-Qun Lin, Lu-Lu Zhang, Ling-Ling Feng, Shao-Qing Niu, Han-Yu Wang, Yu-Jing Zhang, Xi-Cheng Wang
We compared the treatment outcomes, toxicities and prognoses of patients with stage IE-IIE extranodal natural killer/T-cell lymphoma (ENKTL) treated with intensity-modulated radiotherapy (IMRT) or three-dimensional conformal radiotherapy (3DCRT). Newly diagnosed early-stage ENKTL patients (N = 173) were enrolled and received extended involved-field radiotherapy following induction chemotherapy. Patients were treated with 3DCRT (n = 98) or IMRT (n = 75). One-to-one matching of the IMRT and 3DCRT groups was performed through propensity score matching, which yielded 23 pairs of patients...
September 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28937369/study-of-association-of-epstein-barr-virus-in-lymphomas-by-epstein-barr-virus-encoded-rna-in-situ-hybridization-an-indian-perspective-from-a-tertiary-care-cancer-institute
#20
Roshani Gala, Jatin S Gandhi, Gurudutt Gupta, Shrruti K Grover, Anila Sharma, Sunil Pasricha, Anurag Mehta
BACKGROUND: The Epstein-Barr virus (EBV), also called human herpesvirus 4, is a virus of the herpes family. The EBV-associated lymphomas include Burkitt lymphoma, classic Hodgkin lymphoma (HL), lymphomas arising in immunocompromised individuals, peripheral T-cell lymphomas, angioimmunoblastic T-cell lymphoma, extranodal nasal-type natural killer/T-cell lymphoma, and other rare histotypes. OBJECTIVE: The present study evaluated the role of EBV as an etiologic agent in various lymphomas and determined an Indian perspective in a tertiary care cancer center compared to that of Western literature...
July 2017: Indian Journal of Pathology & Microbiology
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