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https://www.readbyqxmd.com/read/29220298/gastrointestinal-stromal-tumors
#1
Margaret von Mehren, Heikki Joensuu
GI stromal tumors (GISTs) are neoplasms with a varying malignancy potential ranging from virtually indolent tumors to rapidly progressing cancers. GISTs occur throughout the intestinal tract, and most harbor an activating mutation in either KIT or platelet-derived growth factor A ( PDGFRA). Diagnosis is made using immunohistochemistry, but molecular testing with mutation analysis is paramount for selection of appropriate therapy. Most small GISTs are cured with surgery. Tyrosine kinase inhibitor (TKI) therapy has led to substantial improvements in survival, both for patients with localized GIST and those with advanced disease...
December 8, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29220296/carcinosarcomas-and-related-cancers-tumors-caught-in-the-act-of-epithelial-mesenchymal-transition
#2
Angela Pang, Mariana Carbini, Andre L Moreira, Robert G Maki
In this review, we outline the biology and management of patients with carcinosarcomas and related malignancies, which are often included under the broader concept of sarcomatoid carcinomas. Carcinosarcomas are unusual tumors that are commonly gynecologic in origin, where they are referred to as malignant mixed Müllerian tumors, but may appear in any anatomic site. Although a variety of hypotheses have been presented as to the biphasic nature of these tumors, carcinosarcomas seem to represent the best example in human cancers of the concept of epithelial-mesenchymal transition (EMT), in which the two parts of the tumor are genomically related to one another, as opposed to the mesenchymal component that represents a second neoplasm or (benign) reactive process...
December 8, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29207182/antitumor-activity-of-the-synthetic-retinoid-st1926-on-primary-effusion-lymphoma-in-vitro-and-in-vivo-models
#3
Louna Karam, Bilal Houshaymi, Rana Abdel-Samad, Mariam Jaafar, Iman Halloum, Claudio Pisano, Frank Neipel, Nadine Darwiche, Raghida Abou Merhi
Primary effusion lymphoma (PEL) is a rare B-cell neoplasm, associated with Kaposi sarcoma-associated herpes virus/human herpes virus-8 (KSHV/HHV-8), arising as malignant effusions in body cavities. PEL cells do not harbor conventional genetic cancer mutations; however, their oncogenesis is mainly attributed to HHV-8 latent genes. Treatment strategies are inefficient resulting in poor prognosis of PEL patients, stressing the need for new effective therapy. ST1926 is a synthetic retinoid with favorable antitumor properties and no cross-resistance with the natural retinoid, all-trans retinoic acid...
December 5, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29206214/immunotherapy-for-prostate-cancer-where-we-are-headed
#4
REVIEW
Giuseppe Schepisi, Alberto Farolfi, Vincenza Conteduca, Filippo Martignano, Delia De Lisi, Giorgia Ravaglia, Lorena Rossi, Cecilia Menna, Salvatore Roberto Bellia, Domenico Barone, Roberta Gunelli, Ugo De Giorgi
Prostate cancer is one of the most common malignant neoplasms in men worldwide, and is the fifth cause of cancer-related death. In recent years, a new generation of therapies have been approved for the management of metastatic disease. Moreover, the development of new immunotherapeutic drugs has become a novel frontier for the treatment of several tumor types; to date, numerous studies have investigated their potential activity, including in prostate cancer. In this article, we discuss the role of emerging immunotherapeutic drugs in prostate cancer patients...
December 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29203116/diagnosis-and-management-of-metastatic-neoplasms-with-unknown-primary
#5
REVIEW
Tilmann Bochtler, Harald Löffler, Alwin Krämer
In cancer of unknown primary (CUP), metastases are clinically and histologically confirmed, but the primary tumor site remains elusive after extensive work-up. CUPs make up for 2-3% of all epithelial malignancies. The two prevailing histologies are adenocarcinomas and undifferentiated carcinomas, whereas squamous cell carcinomas, neuroendocrine carcinomas and rare histologies account for the remaining 10%. The diagnostic work-up in CUP relies strongly on a detailed immunohistological (IHC) analysis in order to characterize the tumor type, nowadays aided by molecular techniques...
November 26, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/29200695/metaplastic-carcinoma-of-breast-and-neurofibromatosis-1-a-rare-association
#6
Gnanapriya Vellaisamy, Suravi Mohanty, Pritilata Rout, Suraj Manjunath
Neurofibromatosis 1 (NF1) patients are generally at higher risk of developing common malignant tumors such as brain and soft tissue tumors. These patients are 5-fold increased the risk of developing breast cancer by the age of 50 years after that the risk remains the same. The most common reported cancer is infiltrating duct carcinoma. We report a case of 61-year-old female with NF1 presented with pain and breast lump for the past 2 months. On mammography, a retroareolar solid cystic lesion measuring 32 mm × 30 mm × 30 mm was noted which was definitive for malignancy...
July 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29200163/therapy-related-acute-myeloid-leukemia-after-the-treatment-of-primary-solid-cancer-in-children-a-single-center-experience
#7
Kyung Taek Hong, Jung Yoon Choi, Che Ry Hong, Hyoung Jin Kang, Kyung Duk Park, Hee Young Shin
Therapy-related acute myeloid leukemia (t-AML) has a dismal prognosis and is one of the most frequent second malignant neoplasms which could be encountered by pediatric oncologists. Between October 2000 and September 2016, 16 patients who had primary solid tumors were diagnosed with t-AML at the Seoul National University Children's Hospital. The median patient age at the time of diagnosis of their primary solid tumors was 9.6 years (range, 0.1 to 15.4 y), and that of t-AML was 14.0 years (range, 4.7 to 23...
December 1, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29198676/case-report-primary-de-novo-sarcoma-in-transplant-pancreas-allograft
#8
S Nagaraju, S J Grethlein, S Vaishnav, A A Sharfuddin, J A Powelson, J A Fridell
BACKGROUND: The majority of malignancies after transplantation appear to be virally mediated and of recipient origin. Donor-derived neoplasms occur early, whereas recipient-origin tumors typically occur many years after transplantation. Sarcomas are a relatively rare form of cancer. The etiology of sarcomas remains largely unknown, although some are linked to viruses, familial cancer syndromes, or therapeutic radiation exposure. Primary sarcomas are extremely rare, accounting for <0...
December 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29198586/metastases-of-malignant-neoplasms-historical-biological-clinical-considerations
#9
REVIEW
Mark R Wick
The metastasis of neoplastic cells from their site of origin to distant anatomic locations continues to be the principal cause of death from malignant tumors, and that fact has been recognized by physicians for over a century. After the work done by Halsted in the treatment of breast cancer in the 1880s, accepted surgical canon held that metastasis occurred in a linear fashion, with centrifugal "growth in continuity" from the primary neoplasm that first involved regional lymph nodes. Those structures were considered to then be the sources of more distant, visceral metastases...
November 24, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/29194093/cdkn2a-b-deletion-and-double-hit-mutations-of-the-mapk-pathway-underlie-the-aggressive-behavior-of-langerhans-cell-tumors
#10
Luc Xerri, José Adélaïde, Cornel Popovici, Séverine Garnier, Arnaud Guille, Lenaïg Mescam-Mancini, Camille Laurent, Pierre Brousset, Carole Coze, Gérard Michel, Max Chaffanet, Reda Bouabdallah, Diane Coso, François Bertucci, Daniel Birnbaum
Langerhans cell histiocytosis (LCH) has a mostly favorable outcome, whereas Langerhans cell sarcoma (LCS) is an aggressive tumor. It is still unclear whether any specific molecular alterations could underlie the aggressive behavior of Langerhans cell proliferations. We used targeted next-generation sequencing and array-comparative genomic hybridization to profile 22 LCH samples from different patients together with 3 LCS samples corresponding to different relapses from the same patient. The third LCS relapse was a composite tumor including both B-cell chronic lymphocytic leukemia and LCS components...
November 29, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29192747/-situational-diagnosis-of-cancer-care-at-the-instituto-mexicano-del-seguro-social
#11
Sonia Patricia de Santillana-Hernández, María Teresa García-Flores, Héctor Galván-Oseguera, Gilberto Pérez-Rodríguez, Héctor David Martínez-Chapaca
Cancer is a public health problem with an impact on Health Services in Mexico; it is also, one of the leading causes of mortality (mortality rate: 610.6 / 100 000) and is expected to double the total number of new cases by 2035 (GLOBOCAN). The most frequent neoplasms are the malignant tumor of breast, prostate, cervix and uterin, colorectal and pulmonary. The most affected groups are the female, and by age the 65 years and older (INEGI). At the IMSS, the mortality rate for malignant tumors has varied, with a sustained decline since 2010...
2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/29192477/mast-cells-and-cancer-a-review-of-literature
#12
Giovanni Paolino, Paola Corsetti, Elisa Moliterni, Serena Corsetti, Dario Didona, Marcello Albanesi, Carlo Mattozzi, Paolo Lido, Stefano Calvieri
Mast cells (MCs) are a potent proangiogenic factor in tumors, they product several pro- angiogenic factors such as fibroblast growth factor 2 (FGF-2), vascular epithelial growth factor (VEGF), tryptase and chymase. Tryptase is a serine protease classified as α-tryptase and β-tryptase, both produced by MCs. Tryptase degrades the tissues, playing an important role in angiogenesis and in the development of metastases. Serum tryptase increases with age, with increased damage to cells and risk of developing a malignancy and it could be considered the expression of a fundamental role of MCs in tumor growth or, on the contrary, in the antitumor response...
November 30, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/29191842/targeting-the-anion-exchanger-2-with-specific-peptides-as-a-new-therapeutic-approach-in-b-lymphoid-neoplasms
#13
Jon Celay, Teresa Lozano, Axel R Concepcion, Elena Beltrán, Francesc Rudilla, María José García-Barchino, Eloy F Robles, Obdulia Rabal, Irene de Miguel, Carlos Panizo, Noelia Casares, Julen Oyarzabal, Jesús Prieto, Juan F Medina, Juan José Lasarte, José Ángel Martínez-Climent
Regulatory T (Treg) cells can weaken antitumor immune responses, and inhibition of their function appears as a promising immunotherapeuticimmunotherapy therapeutic approach in cancer patients. Mice with targeted deletion of the gene encoding the Cl-HCO3-anion exchanger AE2 (also termed SLC4A2), a membrane-bound carrier involved in intracellular pH regulation, showed a progressive decrease in the number of Treg cells. We therefore challenged AE2 as a potential target for tumor immune therapy, and generated linear peptides designed to bind the third extracellular loop of AE2, which is crucial for its exchange activity...
November 30, 2017: Haematologica
https://www.readbyqxmd.com/read/29186874/do-cervical-cancer-patients-diagnosed-with-opportunistic-screening-live-longer-an-arkhangelsk-cancer-registry-study
#14
Elena E Roik, Evert Nieboer, Olga A Kharkova, Andrej M Grjibovski, Vitaly A Postoev, Jon Ø Odland
The aim of the current study was to compare cervical cancer (СС) patients diagnosed with and without screening in terms of: (i) sociodemographic and clinical characteristics; (ii) factors associated with survival; and (iii), and levels of risk. A registry-based study was conducted using data from the Arkhangelsk Cancer Registry. It included women with newly diagnosed malignant neoplasm of the uterine cervix during the period of 1 January 2005 to 11 November 2016 (N = 1548). The Kaplan-Meier method, the log-rank test, and Cox regression were applied...
November 26, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29179472/bcrp-expression-in-schwannoma-plexiform-neurofibroma-and-mpnst
#15
Maurits de Vries, Olaf van Tellingen, Andel G L van der Mey, Antonius M G Bunt, Inge Briaire-de Bruijn, Pancras C W Hogendoorn
Background: peripheral nerve sheath tumors comprise a broad spectrum of neoplasms. Vestibular schwannomas and plexiform neurofibromas are symptomatic albeit benign, but a subset of the latter pre-malignant lesions will transform to malignant peripheral nerve sheath tumors (MPNST). Surgery and radiotherapy are the primary strategies to treat these tumors. Intrinsic resistance to drug therapy characterizes all three tumor subtypes. The breast cancer resistance protein BCRP is a transmembrane efflux transporter considered to play a key role in various biological barriers such as the blood brain barrier...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29178827/genome-wide-segregation-of-single-nucleotide-and-structural-variants-into-single-cancer-cells
#16
John Easton, Veronica Gonzalez-Pena, Donald Yergeau, Xiaotu Ma, Charles Gawad
BACKGROUND: Single-cell genome sequencing provides high-resolution details of the clonal genomic modifications that occur during cancer initiation, progression, and ongoing evolution as patients undergo treatment. One limitation of current single-cell sequencing strategies is a suboptimal capacity to detect all classes of single-nucleotide and structural variants in the same cells. RESULTS: Here we present a new approach for determining comprehensive variant profiles of single cells using a microfluidic amplicon-based strategy to detect structural variant breakpoint sequences instead of using relative read depth to infer copy number changes...
November 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29178089/-current-status-of-hereditary-gastrointestinal-neoplasms
#17
Yulong He
Gastric cancer and colorectal cancer are two common malignant tumors in digestive tract. 1% to 3% of gastric cancer and 5% to 15% of colorectal cancer are definitely hereditary cancer caused by germline gene mutation. Hereditary gastric cancer includes hereditary diffuse gastric cancer(HDGC) and hereditary intestinal gastric cancer (HIGC). CDH1 gene mutation is the main reason to cause HDGC, so the first degree and the second degree family members of HDGC patients are recommended to receive CDH1 mutation detection, endoscopic examination every year and undergo preventive total gastrectomy...
November 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29175211/nutlin-sensitizes-lung-carcinoma-cells-to-interferon-alpha-treatment-in-mdm2-dependent-but-p53-independent-manner
#18
Oleg Shuvalov, Alena Kizenko, Ajgul Shakirova, Olga Fedorova, Alexey Petukhov, Nikolai Aksenov, Elena Vasileva, Alexandra Daks, Nickolai Barlev
As an anticancer therapeutic, Interferon-alpha (IFNα) is used to treat a number of malignancies. However, the application of IFNα is restricted mostly due to its high toxicity. Therefore, novel combination therapeutic regimens are required to decrease the toxicity of IFNα and enhance its efficacy. Here we show that the treatment of p53-deficient human non-small lung carcinoma H1299 cells with IFNα in combination with an inhibitor of MDM2, Nutlin-3a, synergistically affects the proliferation of cancer cells...
November 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29169802/akt-activity-is-elevated-in-aggressive-thyroid-neoplasms-where-it-promotes-proliferation-and-invasion
#19
Daniel R Matson, Heather Hardin, Darya Buehler, Ricardo V Lloyd
The PI3K/AKT/mTOR signaling pathway controls major cellular processes such as cell growth, proliferation and survival. Stimulation of this pathway leads to AKT phosphorylation and activation, resulting in phosphorylation of mTOR and myriad other targets. AKT upregulation has been implicated in thyroid cancer pathogenesis and is a candidate treatment target for patients with advanced disease that has not responded to traditional therapies. Here we evaluate a large series of benign and malignant thyroid tumors for AKT activity and intracellular distribution...
November 20, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29168152/dermatomyositis-and-colorectal-cancer-a-systematic-review
#20
Ioannis D Gkegkes, Evelyn E Minis, Christos Iavazzo
BACKGROUND: Dermatomyositis (DM) is an idiopathic inflammatory myositis. The principal characteristics are cutaneous rash, muscle ache, and muscle weakness. In the past, associations have been established between DM and malignancy, including colorectal cancer. METHODS: A systematic PubMed and Scopus search was conducted. RESULTS: The median age of the patients was 65 years (range 40-82). The majority were female (17 out of 27, 63%). Adenocarcinoma was the most frequent histological type of colorectal neoplasm...
November 22, 2017: Irish Journal of Medical Science
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