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https://www.readbyqxmd.com/read/29454849/escmid-study-group-for-infections-in-compromised-hosts-esgich-consensus-document-on-the-safety-of-targeted-and-biological-therapies-an-infectious-diseases-perspective-intracellular-signaling-pathways-tyrosine-kinase-and-mtor-inhibitors
#1
REVIEW
Mark Reinwald, Jose T Silva, Nicolas J Mueller, Jesús Fortún, Christian Garzoni, Johan W de Fijter, Mario Fernández-Ruiz, Paolo Grossi, Jose María Aguado
BACKGROUND: The present review is part of the ESCMID Study Group for Infections in Compromised Hosts (ESGICH) Consensus Document on the safety of targeted and biological therapies. AIMS: To review, from an Infectious Diseases perspective, the safety profile of therapies targeting different intracellular signaling pathways and to suggest preventive recommendations. SOURCES: Computer-based MEDLINE searches with MeSH terms pertaining to each agent or therapeutic family...
February 15, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29390581/novel-treatment-of-blastic-plasmacytoid-dendritic-cell-neoplasm-a-case-report
#2
Solomiya Grushchak, Cossette Joy, Arielle Gray, Dan Opel, Jodi Speiser, Jeave Reserva, Rebecca Tung, Scott E Smith
RATIONALE: Blastic plasmacytoid dendritic cell neoplasm (BPDCN), derived from precursors of plasmacytoid dendritic cells, is a rare and aggressive malignancy with frequent cutaneous involvement. Although cutaneous lesions are often chemosensitive, BPDCN portends a poor prognosis as most patients relapse after developing drug resistance. PATIENT CONCERNS: We report a case of a 65-year-old man who presented with a rapidly enlarging hyperpigmented plaque on his shoulder with subsequent similarly appearing macules and plaques on his chest, back, and neck...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29386360/therapeutic-synergy-between-tigecycline-and-venetoclax-in-a-preclinical-model-of-myc-bcl2-double-hit-b-cell-lymphoma
#3
Micol Ravà, Aleco D'Andrea, Paola Nicoli, Ilaria Gritti, Giulio Donati, Mirko Doni, Marco Giorgio, Daniela Olivero, Bruno Amati
High-grade B cell lymphomas with concurrent activation of the MYC and BCL2 oncogenes, also known as double-hit lymphomas (DHL), show dismal prognosis with current therapies. MYC activation sensitizes cells to inhibition of mitochondrial translation by the antibiotic tigecycline, and treatment with this compound provides a therapeutic window in a mouse model of MYC-driven lymphoma. We now addressed the utility of this antibiotic for treatment of DHL. BCL2 activation in mouse Eμ-myc lymphomas antagonized tigecycline-induced cell death, which was specifically restored by combined treatment with the BCL2 inhibitor venetoclax...
January 31, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29383130/gsk-3%C3%AE-inhibitor-9-ing-41-reduces-cell-viability-and-halts-proliferation-of-b-cell-lymphoma-cell-lines-as-a-single-agent-and-in-combination-with-novel-agents
#4
Reem Karmali, Vineela Chukkapalli, Leo I Gordon, Jeffrey A Borgia, Andrey Ugolkov, Andrew P Mazar, Francis J Giles
The complexities of GSK-3β function and interactions with PI3K/AKT/mTOR signaling, cell cycling, and apoptotic pathways are poorly understood in the context of lymphomagenesis and cancer therapeutics. In this study, we explored the anti-tumor effects of the GSK-3β inhibitor, 9-ING-41, in lymphoma cell lines as a single agent and in combination with novel agents comprising BCL-2 inhibitor (Venetoclax), CDK-9 inhibitor (BAY-1143572) and p110δ-PI3K inhibitor (Idelalisib). Treatment of Daudi, SUDHL-4, Karpas 422, KPUM-UH1, and TMD8 lymphoma cell lines with 1 μM 9-ING-41 reduced cell viability by 40-70% (p<0...
December 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29382644/venetoclax-data-prompt-rethink-of-cll-therapy
#5
(no author information available yet)
The BCL2 inhibitor venetoclax is approved in the United States for only a subset of patients with refractory chronic lymphocytic leukemia. However, in light of data presented at the American Society of Hematology 2017 Annual Meeting, clinicians are thinking ahead to administering the drug more broadly-in combinations and as a first-line therapy-for other patients with the disease.
January 30, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29353886/the-bet-bromodomain-inhibitor-cpi203-overcomes-resistance-to-abt-199-venetoclax-by-downregulation-of-bfl-1-a1-in-in-vitro-and-in-vivo-models-of-myc-bcl2-double-hit-lymphoma
#6
A Esteve-Arenys, J G Valero, A Chamorro-Jorganes, D Gonzalez, V Rodriguez, I Dlouhy, I Salaverria, E Campo, D Colomer, A Martinez, G Rymkiewicz, P Pérez-Galán, A Lopez-Guillermo, G Roué
High-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements, mostly known as double-hit lymphoma (DHL), is a rare entity characterized by morphologic and molecular features between Burkitt lymphoma and the clinically manageable diffuse large B-cell lymphoma (DLBCL). DHL patients usually undergo a rapidly progressing clinical course associated with resistance to standard chemo-immunotherapy. As a consequence, the prognosis of this entity is particularly poor with a median overall survival inferior to 1 year...
January 22, 2018: Oncogene
https://www.readbyqxmd.com/read/29352235/systems-modeling-accurately-predicts-responses-to-genotoxic-agents-and-their-synergism-with-bcl-2-inhibitors-in-triple-negative-breast-cancer-cells
#7
Federico Lucantoni, Andreas U Lindner, Norma O'Donovan, Heiko Düssmann, Jochen H M Prehn
Triple negative breast cancer (TNBC) is an aggressive form of breast cancer which accounts for 15-20% of this disease and is currently treated with genotoxic chemotherapy. The BCL2 (B-cell lymphoma 2) family of proteins controls the process of mitochondrial outer membrane permeabilization (MOMP), which is required for the activation of the mitochondrial apoptosis pathway in response to genotoxic agents. We previously developed a deterministic systems model of BCL2 protein interactions, DR_MOMP that calculates the sensitivity of cells to undergo mitochondrial apoptosis...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29351984/venetoclax-induced-a-complete-response-in-a-patient-with-al-amyloidosis-plateaued-on-cybord
#8
Nelson Leung, Stephan D Thomé, Angela Dispenzieri
No abstract text is available yet for this article.
January 19, 2018: Haematologica
https://www.readbyqxmd.com/read/29340082/reciprocal-sensitivity-of-diffuse-large-b-cell-lymphoma-cells-to-bcl-2-inhibitors-bird-2-versus-venetoclax
#9
Tamara Vervloessem, Haidar Akl, Thomas Tousseyn, Humbert De Smedt, Jan B Parys, Geert Bultynck
Bcl-2 is often upregulated in cancers to neutralize the BH3-only protein Bim at the mitochondria. BH3 mimetics (e.g. ABT-199 (venetoclax)) kill cancer cells by targeting Bcl-2's hydrophobic cleft and disrupting Bcl-2/Bim complexes. Some cancers with elevated Bcl-2 display poor responses towards BH3 mimetics, suggesting an additional function for anti-apoptotic Bcl-2 in these cancers. Indeed, Bcl-2 via its BH4 domain prevents cytotoxic Ca2+ release from the endoplasmic reticulum (ER) by directly inhibiting the inositol 1,4,5-trisphosphate receptor (IP3R)...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339097/safety-and-preliminary-efficacy-of-venetoclax-with-decitabine-or-azacitidine-in-elderly-patients-with-previously-untreated-acute-myeloid-leukaemia-a-non-randomised-open-label-phase-1b-study
#10
Courtney D DiNardo, Keith W Pratz, Anthony Letai, Brian A Jonas, Andrew H Wei, Michael Thirman, Martha Arellano, Mark G Frattini, Hagop Kantarjian, Relja Popovic, Brenda Chyla, Tu Xu, Martin Dunbar, Suresh K Agarwal, Rod Humerickhouse, Mack Mabry, Jalaja Potluri, Marina Konopleva, Daniel A Pollyea
BACKGROUND: Elderly patients (aged ≥65 years) with acute myeloid leukaemia have poor outcomes and no effective standard-of-care therapy exists. Treatment with hypomethylating agents such as azacitidine and decitabine is common, but responses are modest and typically short-lived. The oral anti-apoptotic B-cell lymphoma 2 protein inhibitor, venetoclax, has shown promising single-agent activity in patients with relapsed or refractory acute myeloid leukaemia and preclinical data suggested synergy between hypomethylating agents and venetoclax, which led to this combination phase 1b study...
January 12, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29333953/the-irreversible-erbb1-2-4-inhibitor-neratinib-interacts-with-the-bcl-2-inhibitor-venetoclax-to-kill-mammary-cancer-cells
#11
Laurence Booth, Jane L Roberts, Francesca Avogadri-Connors, Richard E CutlerJr, Alshad S Lalani, Andrew Poklepovic, Paul Dent
The irreversible ERBB1/2/4 inhibitor, neratinib, down-regulates the expression of ERBB1/2/4 as well as the levels of MCL-1 and BCL-XL. Venetoclax (ABT199) is a BCL-2 inhibitor. At physiologic concentrations neratinib interacted in a synergistic fashion with venetoclax to kill HER2+ and TNBC mammary carcinoma cells. This was associated with the drug-combination: reducing the expression and phosphorylation of ERBB1/2/3; in an eIF2α-dependent fashion reducing the expression of MCL-1 and BCL-XL and increasing the expression of Beclin1 and ATG5; and increasing the activity of the ATM-AMPKα-ULK1 S317 pathway which was causal in the formation of toxic autophagosomes...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333561/pharmacokinetics-of-the-b-cell-lymphoma-2-bcl-2-inhibitor-venetoclax-in-female-subjects-with-systemic-lupus-erythematosus
#12
Mukul Minocha, Jiewei Zeng, Jeroen K Medema, Ahmed A Othman
BACKGROUND AND OBJECTIVE: Venetoclax is an oral selective Bcl-2 inhibitor approved for the treatment of patients with chronic lymphocytic leukemia with 17p deletion. Mechanistic and preclinical evidence warranted evaluation of venetoclax for the treatment of systemic lupus erythematosus (SLE). This work characterized the pharmacokinetics of venetoclax in female subjects with SLE. METHODS: Single (10-500 mg) and multiple (30-600 mg) escalating doses of venetoclax or matching placebo were evaluated using randomized, double-blind, placebo-controlled designs (6 active and 2 placebo per dose with 73 unique SLE patients enrolled, 25 of whom enrolled twice)...
January 15, 2018: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/29305552/venetoclax-for-patients-with-chronic-lymphocytic-leukemia-who-progressed-during-or-after-idelalisib-therapy
#13
Steven Coutre, Michael Choi, Richard R Furman, Herbert Eradat, Leonard Heffner, Jeffrey A Jones, Brenda Chyla, Lang Zhou, Suresh Agarwal, Tina Waskiewicz, Maria Verdugo, Rod A Humerickhouse, Jalaja Potluri, William G Wierda, Matthew S Davids
B-cell receptor pathway inhibitors (BCRi) have transformed treatment for chronic lymphocytic leukemia (CLL); however, efficacy of therapies for patients whose disease is refractory to/relapses after (R/R) BCRi is unknown. Venetoclax is a selective, orally bioavailable BCL-2 inhibitor with activity in patients with CLL, including those who are heavily pretreated or have 17p deletion. This phase 2 study prospectively evaluated venetoclax in patients with R/R CLL after ibrutinib or idelalisib; here we report on patients who received idelalisib as the last BCRi prior to enrollment...
January 5, 2018: Blood
https://www.readbyqxmd.com/read/29302721/impact-of-ritonavir-dose-and-schedule-on-cyp3a-inhibition-and-venetoclax-clinical-pharmacokinetics
#14
Kevin J Freise, Beibei Hu, Ahmed Hamed Salem
PURPOSE: Venetoclax is a selective BCL-2 inhibitor indicated for the treatment of patients with chronic lymphocytic leukemia (CLL). It is predominately metabolized by cytochrome P450 (CYP) 3A. The study objective was to determine the effect of different dosage regimens of ritonavir, a strong CYP3A inhibitor, on the pharmacokinetics of venetoclax in 20 healthy subjects. METHODS: In cohorts 1 and 2, subjects received single 10 mg doses of venetoclax in periods 1 and 2 and a single 50- or 100-mg dose of ritonavir in period 2...
January 4, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29297516/erratum-jayappa-kd-portell-ca-gordon-vl-et-al-microenvironmental-agonists-generate-de-novo-phenotypic-resistance-to-combined-ibrutinib-plus-venetoclax-in-cll-and-mcl-blood-adv-2017-1-14-933-946
#15
(no author information available yet)
[This corrects the article DOI: 10.1182/bloodadvances.2016004176.].
August 22, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296962/venetoclax-a-primer
#16
Andrew W Roberts
No abstract text is available yet for this article.
February 28, 2017: Blood Advances
https://www.readbyqxmd.com/read/29291023/combined-venetoclax-and-alvocidib-in-acute-myeloid-leukemia
#17
James Bogenberger, Clifford Whatcott, Nanna Hansen, Devora Delman, Chang-Xin Shi, Wontak Kim, Hillary Haws, Katherine Soh, Ye Sol Lee, Peter Peterson, Adam Siddiqui-Jain, Steven Weitman, Keith Stewart, David Bearss, Ruben Mesa, Steven Warner, Raoul Tibes
More effective treatment options for elderly acute myeloid leukemia (AML) patients are needed as only 25-50% of patients respond to standard-of-care therapies, response duration is typically short, and disease progression is inevitable even with some novel therapies and ongoing clinical trials. Anti-apoptotic BCL-2 family inhibitors, such as venetoclax, are promising therapies for AML. Nonetheless, resistance is emerging. We demonstrate that venetoclax combined with cyclin-dependent kinase (CDK) inhibitor alvocidib is potently synergistic in venetoclax-sensitive and -resistant AML models in vitro, ex vivo and in vivo...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29283906/new-therapeutic-strategies-for-high-risk-acute-myeloid-leukemia
#18
Kamal Menghrajani, Martin S Tallman
PURPOSE OF REVIEW: Treatments for acute myeloid leukemia (AML) had remained essentially unchanged for several years; however, the advent of molecular testing has generated insight into the biology of this disease which is now being translated into clinical practice. New treatment strategies which improve drug delivery and exploit cellular targets are changing the landscape of how we treat this disease. RECENT FINDINGS: Induction therapy is in the process of changing for several patient populations...
December 27, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/29250930/management-of-high-risk-chronic-lymphocytic-leukaemia-cll-patients-in-australia
#19
REVIEW
Bryone J Kuss, Constantine S Tam
BACKGROUND: Chronic lymphocytic leukaemia (CLL) frequently responds to chemoimmunotherapy combining cytotoxic chemotherapy and monoclonal antibodies. However, CLL is associated with significant genetic heterogeneity, and some high-risk forms are known to be chemo-resistant and associated with early relapse. AIMS: To review the current treatment paradigm of patients with high-risk disease, in particular those with del(17p) and TP53 variants. RESULTS: A 'watch and wait' approach is recommended for all patients who are asymptomatic...
December 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/29246804/venetoclax-a-chance-for-patients-with-chronic-lymphocytic-leukaemia-previously-treated-with-ibrutinib
#20
Francesca R Mauro, Robin Foà
No abstract text is available yet for this article.
December 12, 2017: Lancet Oncology
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