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Peripheral T cell lymphoma

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https://www.readbyqxmd.com/read/27932776/nasal-type-extranodal-natural-killer-t-nk-t-cell-lymphoma-presenting-as-periorbital-cellulitis-a-case-report
#1
Ma'in Ali Al Shawabkeh, Mansour Al Sulaiti, Hamad Al Sa'ey, Shanmugam Ganesan
BACKGROUND Extranodal lymphoma of the paranasal sinuses is a rare clinical entity seen in only 5-8% of extranodal lymphomas of the head and neck. Nasal natural killer/T cell lymphoma (Nasal NKTCL), which is a subtype of peripheral T cell lymphoma, constitutes about 1.4% of all lymphomas. NKTCL is usually diagnosed at a late stage because it presents with nonspecific symptoms in the early stages. CASE REPORT We report the case of a 25-year-old male patient who presented with periorbital swelling treated as fungal sinusitis but proven to have NKTCL...
December 9, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27928959/potential-application-of-5-aryl-substituted-2-amino-benzamide-type-of-hdac1-2-selective-inhibitors-to-pharmaceuticals
#2
Shinichi Uesato, Yoshiyuki Hirata, Tsutomu Sasaki
Diverse histone deacetylase (HDAC) inhibitors have been developed to date. They control not only histone modification but also gene expression of diverse proteins and thus are expected to provide useful therapeutic effects on various diseases, including cancers, psychiatric and cognitive disorders and neurodegenerative diseases, as well as cardiovascular and diabetic diseases. Some isoform-nonselective HDAC inhibitors have been successfully used for clinical treatments of the haematological malignancies, including advanced forms of cutaneous T-cell lymphoma, refractory peripheral T-cell lymphoma and multiple myeloma...
December 8, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27928587/prognosis-of-patients-with-peripheral-t-cell-lymphoma-who-achieve-complete-response-after-chop-chop-like-chemotherapy-without-autologous-stem-cell-transplantation-as-an-initial-treatment
#3
Hideaki Kitahara, Dai Maruyama, Akiko Miyagi Maeshima, Shinichi Makita, Ken-Ichi Miyamoto, Suguru Fukuhara, Wataru Munakata, Tatsuya Suzuki, Yukio Kobayashi, Kinuko Tajima, Takashi Terauchi, Hiroaki Kurihara, Hirokazu Taniguchi, Norio Komatsu, Kensei Tobinai
Cyclophosphamide, doxorubicin, vincristine, and prednisolone (CHOP)/CHOP-like chemotherapy has been mostly applied to patients with untreated peripheral T cell lymphoma (PTCL). Because the long-term outcome of patients with PTCL, especially those achieving complete response (CR), has not been fully elucidated, we retrospectively analyzed 78 consecutive patients initially treated with CHOP/CHOP-like chemotherapy, without high-dose chemotherapy followed by autologous stem cell transplantation (HDC/auto-SCT). Median overall and progression-free survivals in all 78 patients were 44 and 17 months, respectively, with a median follow-up of 62 months...
December 7, 2016: Annals of Hematology
https://www.readbyqxmd.com/read/27921272/bcl6-locus-is-hypermethylated-in-angioimmunoblastic-t-cell-lymphoma
#4
Shoko Nishizawa, Mamiko Sakata-Yanagimoto, Keiichiro Hattori, Hideharu Muto, Tran Nguyen, Koji Izutsu, Kenichi Yoshida, Seishi Ogawa, Naoya Nakamura, Shigeru Chiba
BCL6, a master transcription factor for differentiation of follicular helper T (TFH) cells, is highly expressed in angioimmunoblastic T-cell lymphoma (AITL) and peripheral T-cell lymphomas (PTCL) containing tumor cells with TFH features. TET2, encoding an epigenetic regulator, is frequently mutated in AITL/PTCL. We previously reported that Tet2 knockdown mice developed T-cell lymphomas with TFH features. Hypermethylation of the Bcl6 locus followed by BCL6 upregulation was thought to be the key event for lymphoma development in mice...
December 5, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27915968/peripheral-t-cell-lymphoma-a-posttransplant-lymphoproliferative-disorder-presenting-as-a-jejunal-mass-in-a-renal-transplant-recipient
#5
Aanchal Kakkar, Immanuel Pradeep, Geetika Singh, Amit Dinda, Sanjay K Agarwal
Posttransplant lymphoproliferative disorders are a spectrum of lymphoproliferative disorders seen in recipients of solid-organ, bone marrow, and stem cell allografts. They include polyclonal early lesions mimicking infectious mononucleosis and monoclonal proliferations of B and T cells, indistinguishable from lymphomas occurring in immunocompetent individuals. Although most posttransplant lymphoproliferative disorders are B-cell neoplasms, T-cell posttransplant lymphoproliferative disorders are very rare. Among solid-organ transplants, renal allografts have low risk for development of posttransplant lymphoproliferative disorders...
December 2, 2016: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27911989/a-prospective-cohort-study-of-patients-with-peripheral-t-cell-lymphoma-in-the-united-states
#6
Steven M Horwitz, Lauren C Pinter-Brown, Steven T Rosen, Barbara Pro, Eric D Hsi, Massimo Federico, Christian Gisselbrecht, Marc Schwartz, Lisa A Bellm, Mark A Acosta, Andrei R Shustov, Ranjana H Advani, Tatyana A Feldman, Mary Jo Lechowicz, Sonali M Smith, Frederick Lansigan, Anil Tulpule, Michael D Craig, John P Greer, Brad S Kahl, Joseph W Leach, Neil Morganstein, Carla Casulo, Steven I Park, Francine M Foss
BACKGROUND: Long-term survival in patients with aggressive peripheral T-cell lymphoma (PTCL) is generally poor, and there currently is no clear consensus regarding the initial therapy used for these diseases. Herein, the authors analyzed treatment patterns and outcomes in a prospectively collected cohort of patients with a new diagnosis of nodal PTCL in the United States. METHODS: Comprehensive Oncology Measures for Peripheral T-cell Lymphoma Treatment (COMPLETE) is a prospective multicenter cohort study designed to identify the most common prevailing treatment patterns used for patients newly diagnosed with PTCL in the United States...
December 2, 2016: Cancer
https://www.readbyqxmd.com/read/27904177/a-clinicopathological-analysis-of-primary-cutaneous-lymphomas-a-6-year-observational-study-at-a-tertiary-care-center-of-south-india
#7
Anza Khader, Shiny Padinjarayil Manakkad, Mohammed Shaan, Sarita Sasidharan Pillai, Najeeba Riyaz, P Binitha Manikoth, Muhammed Kunnummel, Sunitha Balakrishnan
BACKGROUND: Little data are available concerning clinical and pathological patterns of cutaneous lymphomas in India. AIM: To analyze the clinical and histopathological characteristics of cutaneous lymphomas in Indian patients. MATERIALS AND METHODS: This is a single-center, prospective, observational study carried out from January 1, 2010, to December 31, 2015. The patients underwent clinical examination, human T-cell lymphotropic virus-1 (HTLV-1) screening, skin biopsy with hematoxylin and eosin and immunohistochemistry staining...
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27898263/genetic-alterations-affecting-gtpases-and-t-cell-receptor-signaling-in-peripheral-t-cell-lymphomas
#8
Rebecca L Boddicker, Gina L Razidlo, Andrew L Feldman
Peripheral T-cell lymphomas (PTCLs) are rare, heterogeneous tumors with poor response to standard therapy and few targeted treatments available. The identification of mutations in the T-cell receptor (TCR) signaling pathway that either directly or indirectly affect Ras- and Rho-family GTPases is an emerging theme across PTCL subtypes. This review summarizes the role of GTPases in TCR signaling and highlights the constellation of mutations in this pathway among PTCLs. In particular, focus is given to the functional impact of the mutations and opportunities for targeted therapy...
November 29, 2016: Small GTPases
https://www.readbyqxmd.com/read/27894880/lymphoma-of-the-eyelid
#9
REVIEW
Frederik Holm Svendsen, Steffen Heegaard
Lymphoma of the eyelid constitutes 5% of ocular adnexal lymphoma. In previously published cases, 56% of lymphomas of the eyelid are of B-cell origin and 44% are of T-cell origin. The most frequent B-cell lymphomas are extranodal marginal zone lymphoma (27 cases--14%) and diffuse large B-cell lymphoma (18 cases--9%). T-cell lymphomas are most frequently mycosis fungoides (25 cases--13%), extranodal NK/T-cell, nasal type lymphoma (12 cases--6%) and primary cutaneous anaplastic large cell lymphoma (12 cases--6%)...
November 25, 2016: Survey of Ophthalmology
https://www.readbyqxmd.com/read/27893842/t-cell-receptor-v%C3%AE-staining-identifies-the-malignant-clone-in-adult-t-cell-leukemia-and-reveals-killing-of-leukemia-cells-by-autologous-cd8-t-cells
#10
Aileen G Rowan, Aviva Witkover, Anat Melamed, Yuetsu Tanaka, Lucy B M Cook, Paul Fields, Graham P Taylor, Charles R M Bangham
There is growing evidence that CD8+ cytotoxic T lymphocyte (CTL) responses can contribute to long-term remission of many malignancies. The etiological agent of adult T-cell leukemia/lymphoma (ATL), human T lymphotropic virus type-1 (HTLV-1), contains highly immunogenic CTL epitopes, but ATL patients typically have low frequencies of cytokine-producing HTLV-1-specific CD8+ cells in the circulation. It remains unclear whether patients with ATL possess CTLs that can kill the malignant HTLV-1 infected clone. Here we used flow cytometric staining of TCRVβ and cell adhesion molecule-1 (CADM1) to identify monoclonal populations of HTLV-1-infected T cells in the peripheral blood of patients with ATL...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27888017/circulating-cxcr5-cd4-t-cells-assist-in-the-survival-and-growth-of-primary-diffuse-large-b-cell-lymphoma-cells-through-interleukin-10-pathway
#11
Zhanshan Cha, Guangfang Qian, Yan Zang, Haihui Gu, Yanyan Huang, Lishuang Zhu, Jinqi Li, Yang Liu, Xiaohua Tu, Haihan Song, Baohua Qian
Diffuse large B cell lymphoma (DLBCL) is a common and aggressive cancer caused by the malignant transformation of B cells. Although it has been established that the follicular helper T (Tfh) cells play a central role in B cell development, little information is available on their involvement in DLBCL pathogenesis. We studied the role of the peripheral Tfh equivalent, the CXCR5(+) CD4(+) T cells, in DLBCL. Data showed that compared to CXCR5(-) CD4(+) T cells, CXCR5(+) CD4(+) T cells were significantly more effective at promoting the proliferation as well as inhibiting the apoptosis of primary autologous DLBCL tumor cells...
November 23, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27885817/serum-ferritin-level-is-a-prognostic-marker-in-patients-with-peripheral-t-cell-lymphoma
#12
S Koyama, S Fujisawa, R Watanabe, M Itabashi, D Ishibashi, Y Ishii, Y Hattori, Y Nakajima, K Motohashi, H Takasaki, R Kawasaki, C Hashimoto, E Yamazaki, H Koharazawa, S Takemura, N Tomita, R Sakai, S Motomura, H Nakajima
INTRODUCTION: The prognostic value of serum ferritin level in patients with peripheral T-cell lymphoma (PTCL) remains unknown. METHODS: We retrospectively analyzed clinical data from 78 consecutive patients with newly diagnosed PTCL that were treated with anthracycline-containing regimens between 1998 and 2011. RESULTS: The patients consisted of 50 males and 28 females with a median age of 64 years (range, 16-83 years). The subtypes of PTCL were 39 PTCL, not otherwise specified and 39 angioimmunoblastic T-cell lymphoma (AITL)...
November 24, 2016: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/27873737/erythroderma-and-non-hodgkin-t-cell-lymphoma-what-else-apart-from-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#13
Alessandro Pileri, Cinzia Pellegrini, Claudio Agostinelli, Vieri Grandi, Annalisa Patrizi, Pier Luigi Zinzani, Nicola Pimpinelli
BACKGROUND: Peripheral T-cell lymphomas, not otherwise specified (PTCL-NOS), are a rare condition characterised by specific histology, nodal presentation, and a poor prognosis. In total, 10-18% of patients present with cutaneous involvement which is regarded as a poor prognostic marker. However, cutaneous PTCL-NOS lesions have been rarely reported in the literature. OBJECTIVES: We sought to describe PTCL-NOS cases characterised by erythrodermic dissemination to the skin...
November 21, 2016: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/27868052/friend-or-foe-mogamulizumab-in-allogeneic-hematopoietic-stem-cell-transplantation-for-adult-t-cell-leukemia-lymphoma
#14
REVIEW
Shigeo Fuji, Takero Shindo
Adult T-cell leukemia/lymphoma (ATL/ATLL) is a peripheral T-cell neoplasm associated with human T-lymphotropic virus type-1 (HTLV-1). Even the currently most intensive chemotherapy regimen modified LSG15 (mLSG15, VCAP-AMP-VECP) results in a dismal clinical outcome, with a median overall survival of only around 1 year. Although allogeneic hematopoietic stem cell transplantation (allo-HSCT) may lead to long-term remission in a proportion of patients with aggressive ATL, the clinical outcome in patients with refractory or relapsed ATL is unsatisfactory...
2016: Stem Cell Investigation
https://www.readbyqxmd.com/read/27866525/-peripheral-t-cell-lymphoma-treatment-in-the-precision-medicine-era
#15
Y Huang, Y K Shi
No abstract text is available yet for this article.
November 15, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27863842/development-of-t-follicular-helper-cells-and-their-role-in-disease-and-immune-system
#16
REVIEW
Sadegh Eivazi, Salman Bagheri, Mohammad Sadegh Hashemzadeh, Majdedin Ghalavand, Elmira Safaie Qamsari, Ruhollah Dorostkar, Maryam Yasemi
The T follicular helper cells (TFH) are a subset of CD4+ T cells specialized to regulate antibody responses. The production of these cells is associated with the dendritic cells (DCs) and B cells. TFH cells help B cells form germinal centers (GC) differentiate into memory and plasma cells (antibody-secreting cells) as humoral responses. In addition, there is strong evidence that TFH cells play a pivotal role in the development of long-lived humoral immunity. Molecular factors such as transcription factors, surface receptors, cytokine and micro RNAs are involved in the formation of TFH cells...
November 15, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27863540/comparison-of-serum-cytokine-levels-between-dogs-with-multicentric-lymphoma-and-healthy-dogs
#17
Jerome Calvalido, Geoffrey A Wood, Anthony J Mutsaers, Darren Wood, William Sears, J Paul Woods
In humans, multiple cytokines have been linked to the development of lymphoma, and are relevant biomarkers for response to chemotherapy and prognosis. In contrast, only a few circulating cytokines have been studied in dogs with lymphoma. We prospectively enrolled thirty-one dogs newly diagnosed with multicentric lymphoma. Immunophenotype was determined by flow cytometry in all dogs, separating them into 2 subgroups: B cell lymphoma (n=21) and T cell lymphoma (n=10). Nineteen healthy dogs were enrolled in the control group...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27862162/erythema-multiforme-like-cutaneous-lesions-in-monomorphic-epitheliotropic-intestinal-t-cell-lymphoma-a-rare-case-report
#18
Kumpol Aiempanakit, Chitiarpa Amatawet, Kanokphorn Chiratikarnwong, Sauvarat Auepemkiate, Kanita Kayasut, Supaporn Suwiwat, Benjawan Apinantriyo
Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), also known as Type II enteropathy-associated T-cell lymphoma (EATL), is an aggressive peripheral T-cell lymphoma. EATL generally presents in adults with gastrointestinal symptoms. Skin involvement is very rare, found only in approximately five percent of patients. The authors report a 67-year-old Asian male who presented with chronic diarrhea and developed erythema multiforme-like cutaneous lesions. A skin biopsy revealed extensive pagetoid spread of atypical lymphocytes in the epidermis...
November 10, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27861791/foxp1-is-a-key-regulator-of-quiescence-in-healthy-human-cd3-cd4-t-cells-and-is-constitutively-repressed-in-cd3-cd4-t-cells-from-patients-with-lymphoproliferative-disorders
#19
Soizic Garaud, Florence Roufosse, Pushpamali De Silva, Chunyan Gu-Trantien, Jean-Nicolas Lodewyckx, Hugues Duvillier, Sarah Dedeurwaerder, Martin Bizet, Matthieu Defrance, François Fuks, Françoise Bex, Karen Willard-Gallo
The forkhead box P1 (FOXP1) transcription factor has been shown to regulate the generation and maintenance of quiescent naïve murine T cells. In humans, FOXP1 expression has been correlated with overall survival in patients with peripheral T-cell lymphoma (PTCL), although its regulatory role in T-cell function is currently unknown. We found that FOXP1 is normally expressed in all human leukocyte subpopulations. Focusing on primary human CD4(+) T cells, we show that nuclear expression of FOXP1 predominates in naïve cells with significant downregulation detected in memory cells from blood and tonsils...
November 8, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27861596/pd-l1-status-in-refractory-lymphomas
#20
Semir Vranic, Nilanjan Ghosh, Jeffery Kimbrough, Nurija Bilalovic, Ryan Bender, David Arguello, Yvonne Veloso, Aida Dizdarevic, Zoran Gatalica
Targeted immunotherapy based on PD-1/PD-L1 suppression has revolutionized the treatment of various solid tumors. A remarkable improvement has also been observed in the treatment of patients with refractory/relapsing classical Hodgkin lymphoma (cHL). We investigated PD-L1 status in a variety of treatment resistant lymphomas. Tumor samples from 78 patients with therapy resistant lymphomas were immunohistochemically (IHC) investigated for the expression of PD-L1 using two antibody clones (SP142 and SP263, Ventana)...
2016: PloS One
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