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Venetoclax lymphoma

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https://www.readbyqxmd.com/read/29340082/reciprocal-sensitivity-of-diffuse-large-b-cell-lymphoma-cells-to-bcl-2-inhibitors-bird-2-versus-venetoclax
#1
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
#2
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/29333561/pharmacokinetics-of-the-b-cell-lymphoma-2-bcl-2-inhibitor-venetoclax-in-female-subjects-with-systemic-lupus-erythematosus
#3
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/29222670/venetoclax-for-treating-chronic-lymphocytic-leukaemia-an-evidence-review-group-perspective-of-a-nice-single-technology-appraisal
#4
REVIEW
Hema Mistry, Chidozie Nduka, Martin Connock, Jill Colquitt, Theodoros Mantopoulos, Emma Loveman, Renata Walewska, James Mason
Venetoclax is licensed to treat relapsed or refractory (R/R) chronic lymphocytic leukaemia (CLL). As part of the Single Technology Appraisal (STA) ID944, the National Institute for Health and Care Excellence (NICE) invited AbbVie, the manufacturer, to submit evidence on the use of venetoclax, within its licensed indication. The Evidence Review Group (ERG), Warwick Evidence, was asked to provide an independent and critical review of the submitted evidence. Evidence came from three single-arm trials in CLL patients with or without 17p deletion [del(17p])/TP53 chromosomal abnormalities...
December 8, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/29126866/advances-in-diagnosis-and-management-of-diffuse-large-b-cell-lymphoma
#5
REVIEW
Fernando Cabanillas, Bijal Shah
The management of diffuse large B-cell lymphoma (DLBCL) has been gradually evolving since the discovery of its 2 major forms, the germinal center B-like (GCB) and activated B-cell (ABC) types. Although the reference standard for the identification of these cell types is considered gene expression profiling (GEP), currently the only method commercially available is immunohistochemistry (IHC). The application of various IHC-based algorithms and their correlation with GEP and clinical outcome are discussed. Because of the adverse prognostic implications of the non-GCB type and its potential effects on treatment selection, the recently revised World Health Organization classification has included these biologic cell types...
December 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/29066507/pqr309-is-a-novel-dual-pi3k-mtor-inhibitor-with-pre-clinical-antitumor-activity-in-lymphomas-as-a-single-agent-and-in-combination-therapy
#6
Chiara Tarantelli, Eugenio Gaudio, Alberto Jesus Arribas, Ivo Kwee, Petra Hillmann, Andrea Rinaldi, Luciano Cascione, Filippo Spriano, Elena Bernasconi, Francesca Guidetti, Laura Carrassa, Roberta Bordone Pittau, Florent Beaufils, Reto Ritschard, Denise Rageot, Alexander Sele, Barbara Dossena, Francesca M Rossi, Antonella Zucchetto, Monica Taborelli, Valter Gattei, Davide Rossi, Anastasios Stathis, Georg Stussi, Massimo Broggini, Matthias P Wymann, Andreas Wicki, Emanuele Zucca, Vladimir Cmiljanovic, Doriano Fabbro, Francesco Bertoni
PURPOSE: Activation of the PI3K/mTOR signaling pathway is recurrent in different lymphoma types and pharmacological inhibition of the PI3K/mTOR pathway has shown activity in lymphoma patients. Here, we extensively characterized the in vitro and in vivo activity and the mechanism of action of PQR309 (bimiralisib), a novel oral selective dual PI3K/mTOR inhibitor under clinical evaluation, in preclinical lymphoma models. EXPERIMENTAL DESIGN: This study included preclinical in vitro activity screening on a large panel of cell lines, both as single agent and in combination, validation experiments on in vivo models and primary cells, proteomics and gene expression profiling and comparison with other signaling inhibitors...
October 24, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29063177/approach-to-richter-transformation-of-chronic-lymphocytic-leukemia-in-the-era-of-novel-therapies
#7
REVIEW
Maliha Khan, Rabbia Siddiqi, Philip A Thompson
Chronic lymphocytic leukemia (CLL) has a highly variable clinical course. About 2-10% of CLL patients develop aggressive histological transformation, most commonly to diffuse large B cell lymphoma (DLBCL), historically called Richter transformation (RT). Clinical features suggestive of RT include elevated LDH and non-specific symptoms such as fever, weight loss, and lymphadenopathy. 18-fluorodeoxyglucose (18-FDG) uptake is increased on PET scan (standardized uptake value max most commonly ≥ 10). PET/CT study can identify optimal site for excisional biopsy, which is the gold standard for RT diagnosis, as well as aid in disease staging and prognostication...
October 23, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/29061914/therapeutics-targeting-bcl-2-in-hematological-malignancies
#8
REVIEW
Astrid Ruefli-Brasse, John C Reed
Members of the B-cell lymphoma 2 (BCL-2) gene family are attractive targets for cancer therapy as they play a key role in promoting cell survival, a long-since established hallmark of cancer. Clinical utility for selective inhibition of specific anti-apoptotic Bcl-2 family proteins has recently been realized with the Food and Drug Administration (FDA) approval of venetoclax (formerly ABT-199/GDC-0199) in relapsed chronic lymphocytic leukemia (CLL) with 17p deletion. Despite the impressive monotherapy activity in CLL, such responses have rarely been observed in other B-cell malignancies, and preclinical data suggest that combination therapies will be needed in other indications...
October 23, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/29034364/microenvironmental-agonists-generate-de-novo-phenotypic-resistance-to-combined-ibrutinib-plus-venetoclax-in-cll-and-mcl
#9
Kallesh D Jayappa, Craig A Portell, Vicki L Gordon, Brian J Capaldo, Stefan Bekiranov, Mark J Axelrod, L Kyle Brett, Julia D Wulfkuhle, Rosa I Gallagher, Emanuel F Petricoin, Timothy P Bender, Michael E Williams, Michael J Weber
De novo resistance and rapid recurrence often characterize responses of B-cell malignancies to ibrutinib (IBR), indicating a need to develop drug combinations that block compensatory survival signaling and give deeper, more durable responses. To identify such combinations, we previously performed a combinatorial drug screen and identified the Bcl-2 inhibitor venetoclax (VEN) as a promising partner for combination with IBR in Mantle Cell Lymphoma (MCL). We have opened a multi-institutional clinical trial to test this combination...
June 13, 2017: Blood Advances
https://www.readbyqxmd.com/read/29027832/clinical-evaluation-of-p-glycoprotein-inhibition-by-venetoclax-a-drug-interaction-study-with-digoxin
#10
Manoj S Chiney, Rajeev M Menon, Orlando F Bueno, Bo Tong, Ahmed Hamed Salem
1. Venetoclax is a novel, small molecule B-cell lymphoma-2 (BCL-2) inhibitor that has demonstrated clinical efficacy in a variety of haematological malignancies. Since venetoclax is an inhibitor of P glycoprotein (P-gp) transporter, a study was conducted in healthy, female volunteers to evaluate the effect of venetoclax on the pharmacokinetics of digoxin, a P-gp probe substrate. 2. Volunteers received a single oral dose of digoxin (0.5 mg) with or without a single oral dose of venetoclax (100  mg). Serial blood samples were obtained for pharmacokinetic assessments of digoxin and venetoclax and serial urine samples were obtained for measurement of digoxin concentrations...
October 13, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28993217/mechanistic-pbpk-modeling-of-the-dissolution-and-food-effect-of-a-bcs-iv-compound-the-venetoclax-story
#11
Arian Emami Riedmaier, David J Lindley, Jeffrey A Hall, Steven Castleberry, Russell T Slade, Patricia Stuart, Robert A Carr, Thomas B Borchardt, Daniel A J Bow, Marjoleen Nijsen
PURPOSE: Venetoclax, a selective B-cell lymphoma-2 inhibitor, is a biopharmaceutics classification system (BCS) class IV compound. The aim of this study was to develop a physiologically-based pharmacokinetic (PBPK) model to mechanistically describe absorption and disposition of an amorphous solid dispersion (ASD) formulation of venetoclax in humans. METHODS: A mechanistic PBPK model was developed incorporating measured amorphous solubility, dissolution, metabolism and plasma protein binding...
October 6, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28984869/bcl2-and-mir-15-16-from-gene-discovery-to-treatment
#12
REVIEW
Yuri Pekarsky, Veronica Balatti, Carlo M Croce
In 1984, we investigated the t(14;18) chromosomal translocations that frequently occur in patients with follicular lymphoma. We first identified a locus on chromosome 18 involved in these translocations with the chromosome 14 containing the immunoglobulin heavy chain locus. Within this region on chromosome 18, we then discovered a gene that we called BCL2, which was activated by the translocations. Since that time, many studies determined that BCL2 is one of the most important oncogenes involved in cancer by inhibiting apoptosis...
October 6, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28972015/synergy-of-bcl2-and-histone-deacetylase-inhibition-against-leukemic-cells-from-cutaneous-t-cell-lymphoma-patients
#13
Benoit M Cyrenne, Julia M Lewis, Jason G Weed, Kacie R Carlson, Fatima N Mirza, Francine M Foss, Michael Girardi
The presence and degree of peripheral blood involvement in patients with cutaneous T-cell lymphoma (CTCL) portend a worse clinical outcome. Available systemic therapies for CTCL may variably decrease tumor burden and improve quality of life, but offer limited effects on survival; thus, novel approaches to the treatment of advanced stages of this non-Hodgkin lymphoma are clearly warranted. Mutational analyses of CTCL patient peripheral blood malignant cell samples suggested the antiapoptotic mediator B-cell lymphoma 2 (BCL2) as a potential therapeutic target...
November 9, 2017: Blood
https://www.readbyqxmd.com/read/28972014/first-in-human-response-of-bcl-2-inhibitor-venetoclax-in-t-cell-prolymphocytic-leukemia
#14
Bernd Boidol, Christoph Kornauth, Emiel van der Kouwe, Nicole Prutsch, Lukas Kazianka, Sinan Gültekin, Gregor Hoermann, Marius E Mayerhoefer, Georg Hopfinger, Alexander Hauswirth, Michael Panny, Marie-Bernadette Aretin, Bernadette Hilgarth, Wolfgang R Sperr, Peter Valent, Ingrid Simonitsch-Klupp, Richard Moriggl, Olaf Merkel, Lukas Kenner, Ulrich Jäger, Stefan Kubicek, Philipp B Staber
T-cell prolymphocytic leukemia (T-PLL) is a rare and aggressive T-lymphoid malignancy usually refractory to current treatment strategies and associated with a short overall survival. By applying next-generation functional testing of primary patient-derived lymphoma cells using a library of 106 FDA-approved anti-cancer drugs or compounds currently in clinical development we pursued to identify novel effective treatments for T-PLL patients. We found that the BCL-2 inhibitor venetoclax (ABT-199) demonstrated the strongest T-PLL specific response when comparing individual ex vivo drug response in 86 patients with refractory hematologic malignancies...
September 27, 2017: Blood
https://www.readbyqxmd.com/read/28945711/venetoclax-management-and-care-for-patients-with-relapsed-or-refractory-chronic-lymphocytic-leukemia%C3%A2
#15
Heather Brumbaugh Paradis, Debbie Alter, Diane Llerandi
BACKGROUND: Venetoclax (Venclexta™) is a potent, selective, orally available, small-molecule B-cell lymphoma 2 inhibitor that achieves response rates of about 80% and has an acceptable safety profile for patients with relapsed or refractory chronic lymphocytic leukemia (CLL).
. OBJECTIVES: The aim was to describe treatment management considerations when caring for patients using venetoclax.
. METHODS: A review was done of safety and management considerations based on current clinical practice and 240 patients with CLL who received venetoclax monotherapy on clinical trials from 2011-2016...
October 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28914567/chemotherapy-free-triple-combination-of-obinutuzumab-venetoclax-and-idasanutlin-antitumor-activity-in-xenograft-models-of-non-hodgkin-lymphoma
#16
Frank Herting, Thomas Friess, Pablo Umaña, Steven Middleton, Christian Klein
No abstract text is available yet for this article.
September 15, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28851760/tumor-lysis-syndrome-in-chronic-lymphocytic-leukemia-with-novel-targeted-agents
#17
REVIEW
Bruce D Cheson, Sari Heitner Enschede, Elisa Cerri, Monali Desai, Jalaja Potluri, Nicole Lamanna, Constantine Tam
Tumor lysis syndrome (TLS) is an uncommon but potentially life-threatening complication associated with the treatment of some cancers. If left untreated, TLS may result in acute renal failure, cardiac dysrhythmia, neurologic complications, seizures, or death. Tumor lysis syndrome is most commonly observed in patients with hematologic malignancies with a high proliferation rate undergoing treatment with very effective therapies. In chronic lymphocytic leukemia (CLL), historically, TLS has been observed less often, owing to a low proliferation rate and slow response to chemotherapy...
November 2017: Oncologist
https://www.readbyqxmd.com/read/28797193/exposure-response-evaluations-of-venetoclax-efficacy-and-safety-in-patients-with-non-hodgkin-lymphoma
#18
Apurvasena Parikh, Sathej Gopalakrishnan, Kevin J Freise, Maria E Verdugo, Rajeev M Menon, Sven Mensing, Ahmed Hamed Salem
Exposure-response analyses were performed for a venetoclax monotherapy study in 106 patients with varying subtypes of non-Hodgkin lymphoma (NHL) (NCT01328626). Logistic regression, time-to-event, and progression-free survival (PFS) analyses were used to evaluate the relationship between venetoclax exposure, NHL subtype and response, PFS, or occurrence of serious adverse events. Trends for small increases in the probability of response with increasing venetoclax exposures were identified, and became more evident when assessed by NHL subtype...
August 10, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28741496/targeting-bcl-2-like-proteins-to-kill-cancer-cells
#19
REVIEW
Suzanne Cory, Andrew W Roberts, Peter M Colman, Jerry M Adams
Mutations that impair apoptosis contribute to cancer development and reduce the effectiveness of conventional anti-cancer therapies. These insights and understanding of how the B cell lymphoma (BCL)-2 protein family governs apoptosis have galvanized the search for a new class of cancer drugs that target its pro-survival members by mimicking their natural antagonists, the BCL-2 homology (BH)3-only proteins. Successful initial clinical trials of the BH3 mimetic venetoclax/ABT-199, specific for BCL-2, have led to its recent licensing for refractory chronic lymphocytic leukemia and to multiple ongoing trials for other malignancies...
August 2016: Trends in Cancer
https://www.readbyqxmd.com/read/28724540/targeting-bcl-2-in-b-cell-lymphomas
#20
REVIEW
Matthew S Davids
The B-cell leukemia/lymphoma-2 (BCL-2) family of proteins governs the intrinsic pathway of mitochondrial apoptosis. Dysregulation of BCL-2 has long been known to be a crucial part of the pathophysiology of B-cell lymphomas; however, several early attempts to target this pathway therapeutically were unsuccessful because of toxicity, lack of efficacy, or both. Recently, a highly potent and selective oral BCL-2 antagonist, venetoclax, was approved in chronic lymphocytic leukemia, where it has proven to be highly active, even in patients with high-risk del(17p) disease...
August 31, 2017: Blood
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