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https://www.readbyqxmd.com/read/27913471/sequencing-of-chronic-lymphocytic-leukemia-therapies
#1
Jacqueline C Barrientos
It is an unprecedented time for the treatment of patients with chronic lymphocytic leukemia (CLL) with the recent approval of several targeted agents for use in frontline, relapsed, refractory, and high-risk disease. Traditionally, frontline management of CLL has been a combination of chemotherapy (fludarabine, cyclophosphamide, bendamustine, or chlorambucil) with an anti-CD20 monoclonal antibody (rituximab, ofatumumab, obinutuzumab). The current landscape is rapidly evolving with the advent of therapies that demonstrate selective inhibition of important pathways necessary for CLL proliferation and survival...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27889784/targeted-therapy-of-cll
#2
Othman Al-Sawaf, Kirsten Fischer, Barbara Eichhorst, Michael Hallek
The landscape of chronic lymphocytic leukemia (CLL) has undergone profound changes in the past years. First, the addition of CD20-targeting antibodies to conventional chemotherapy has improved the therapeutic outcome in the majority of CLL patients. Since the establishment of the critical role of the B cell receptor signaling pathway in the pathogenesis of CLL, several agents have been developed to target this pathway. Ibrutinib and idelalisib, 2 potent kinase inhibitors, have both become available for CLL therapy in the first and second line...
2016: Oncology Research and Treatment
https://www.readbyqxmd.com/read/27872741/novel-drugs-in-follicular-lymphoma
#3
REVIEW
Antonella Anastasia, Giuseppe Rossi
Follicular lymphoma(FL) is the most common indolent non-Hodgkin lymphoma and constitutes 15% to 30% of lymphoma diagnoses. The natural history of the disease is characterized by recurrent relapses and progressively shorter remissions with a median survival of 10yrs. The impossibility of achieving a definite cure, have prompted investigations into the possible role of more active and less toxic strategies with innovative therapeutic agents. Recently Casulo et al. demonstrated that approximately 20% of patients with FL relapse within two years after achieving remission with R-CHOP and have a poor prognosis...
2016: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/27854102/the-next-generation-of-targeted-molecules-for-the-treatment-of-chronic-lymphocytic-leukemia
#4
REVIEW
Deepa Jeyakumar, Susan O'Brien
With the recent approval of several new targeted therapies for chronic lymphocytic leukemia (CLL), there are now multiple options for its treatment. Inhibitors of Bruton tyrosine kinase (with ibrutinib being the first-in-class US Food and Drug Administration-approved agent) and phosphoinositide 3-kinase (with idelalisib as the first-in-class approved agent) are promising because they are generally well tolerated and highly effective against this malignancy. These agents may be particularly important in the treatment of older patients who are less able to tolerate the myelosuppression (and subsequent infections) associated with chemoimmunotherapy...
November 15, 2016: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/27846451/sar-study-of-5-alkynyl-substituted-quinazolin-4-3h-ones-as-phosphoinositide-3-kinase-delta-pi3k%C3%AE-inhibitors
#5
Manman Wei, Xi Zhang, Xiang Wang, Zilan Song, Jian Ding, Ling-Hua Meng, Ao Zhang
PI3Kδ is a key component in the aberrant signaling transduction in B cell malignancy, therefore specific targeting PI3Kδ has become an attractive molecularly targeted therapy for chronic lymphocytic leukemia (CLL). Herein, we describe the discovery and optimization of a series of 5-alkynyl substituted PI3Kδ inhibitors based on the first FDA-approved inhibitor idelalisib. Compound 8d bearing the 1-morpholinohex-5-yn-1-one moiety as the C5-substituent was identified to have high potency against PI3Kδ (3.82 nM) and SU-DHL-6 cells (7...
January 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27834943/idelalisib-improves-cd37-antibody-bi-836826-cytotoxicity-against-chemo-resistant-relapse-initiating-cll-cells-a-rationale-for-combination-treatment
#6
S Betrian, L Ysebaert, K H Heider, J P Delord, J J Fournié, A Quillet-Mary
No abstract text is available yet for this article.
November 11, 2016: Blood Cancer Journal
https://www.readbyqxmd.com/read/27818019/sequential-disseminated-aspergillosis-and-pulmonary-tuberculosis-in-a-patient-treated-by-idelalisib-for-chronic-lymphocytic-leukemia
#7
B Lafon-Desmurs, G Monsel, V Leblond, M Papo, E Caumes, A Fekkar, S Jaureguiberry
No abstract text is available yet for this article.
November 3, 2016: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/27808579/predictive-and-prognostic-biomarkers-in-the-era-of-new-targeted-therapies-for-chronic-lymphocytic-leukemia
#8
Davide Rossi, Bernhard Gerber, Georg Stüssi
Treatment options for chronic lymphocytic leukemia (CLL) have improved with the introduction of the B-cell receptor inhibitors ibrutinib and idelalisib, and of the BCL2 inhibitor venetoclax. While awaiting the results of head to head comparisons between novel agents and chemoimmunotherapy, predictive biomarkers can assist physicians in treatment tailoring. Though novel agents have modified the landscape of predictors at the time of treatment requirement, the usefulness of historical CLL prognostic biomarkers is still up-to-date when considering anticipation of time to first treatment...
November 3, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27796157/management-of-elderly-and-unfit-patients-with-chronic-lymphocytic-leukemia
#9
Francesca R Mauro, Adriano Salaroli, Maria D Caputo, Gioia Colafigli, Luigi Petrucci, Melissa Campanelli, Antonietta Ferretti, Anna R Guarini, Robin Foà
About 75% of patients with chronic lymphocytic leukemia (CLL) are more than 65 years at the time of diagnosis. Treatment of the elderly remains complicated due to multiple factors, such as comorbidities, decline in functional reserve and fitness. Since chronological age by itself cannot properly predict life expectancy and treatment tolerance, an accurate assessment of the fitness status is of crucial importance for an optimal treatment choice. Areas covered: This review will discuss the most relevant aspects concerning the issues experienced in the management of elderly/unfit patients with CLL...
December 2016: Expert Review of Hematology
https://www.readbyqxmd.com/read/27784673/silencing-c-myc-translation-as-a-therapeutic-strategy-through-targeting-pi3k-delta-and-ck1-epsilon-in-hematological-malignancies
#10
Changchun Deng, Mark R Lipstein, Luigi Scotto, Xavier O Jirau Serrano, Michael A Mangone, Shirong Li, Jeremie Vendome, Yun Hao, Xiaoming Xu, Shi-Xian Deng, Ronald B Realubit, Nicholas P Tatonetti, Charles Karan, Suzanne Lentzsch, David A Fruman, Barry Honig, Donald W Landry, Owen A O'Connor
Phosphoinositide 3-kinase (PI3K) and the proteasome pathway are both involved in activating the mechanistic target of rapamycin (mTOR). Because mTOR signaling is required for initiation of mRNA translation, we hypothesized that co-targeting the PI3K and proteasome pathways might synergistically inhibit translation of c-Myc. We found that a novel PI3K delta isoform inhibitor TGR-1202, but not the approved PI3Kδ inhibitor idelalisib, was highly synergistic with the proteasome inhibitor carfilzomib in lymphoma, leukemia, and myeloma cell lines and primary lymphoma and leukemia cells...
October 26, 2016: Blood
https://www.readbyqxmd.com/read/27748929/idelalisib-induces-g1%C3%A2-arrest-and-apoptosis-in-chronic-myeloid-leukemia-k562-cells
#11
Yali Chen, Qianxiang Zhou, Lei Zhang, Ran Wang, Meihua Jin, Yuling Qiu, Dexin Kong
Increasing resistance of imatinib, a BCR-ABL tyrosine kinase inhibitor, hinders its use in the therapy of chronic myeloid leukemia (CML). The PI3K pathway is known to be closely involved in BCR-ABL transformation and the tumorigenesis of CML, suggesting that PI3K may be a potential target for CML therapy. Idelalisib, a specific inhibitor of PI3K p110δ, has been approved for the treatment of chronic lymphocytic leukemia (CLL). However, the antileukemia effect of idelalisib on CML remains unknown. In the present study, the antileukemia activity of idelalisib alone or in combination with imatinib was investigated by use of K562 cells...
October 17, 2016: Oncology Reports
https://www.readbyqxmd.com/read/27742069/b-cell-receptor-inhibition-as-a-target-for-cll-therapy
#12
Deepa Jeyakumar, Susan O'Brien
Inhibitors of the B cell receptor (BCR) represent an attractive therapeutic option for patients with chronic lymphocytic leukemia. Recently approved inhibitors of Bruton's tyrosine kinase (ibrutinib) and phosphatidylinositol 3-kinase (idelalisib), are promising agents because they are generally well tolerated and highly effective. These agents may be particularly important in the treatment of older patients who are less able to tolerate the myelosuppression (and infections) associated with chemoimmunotherapy...
March 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27742066/the-21st-century-revolution-in-cll-why-this-matters-to-patients
#13
Brian Koffman, Andrew Schorr
The 21st century has seen rapid, positive changes in the management of chronic lymphocytic leukaemia from the patient's perspective. New prognostic and predictive markers have ushered in the start of more precise and individualized therapy. For the first time, combined therapy [fludarabine, cyclophosphamide and rituximab] has been shown to prolong life significantly. Clinical trials have become more adaptive, faster and more patient friendly. Perhaps the greatest change of all is the development of novel oral agents (ibrutinib and idelalisib) and powerful monoclonal antibodies that offer robust and durable disease control...
March 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27742065/current-strategies-to-create-tailored-and-risk-adapted-therapies-for-cll-patients
#14
Paula Cramer, Barbara Eichhorst, Hans Christian Reinhardt, Michael Hallek
Given the current dynamics in the development of novel agents for CLL therapy, the task to find optimal, non-toxic combinations has become the primary goal. This article gives an update of the most interesting novel drugs. The strategy of the German CLL Study Group to use these agents in combinations is described in detail, highlighting the strategy and first results of a recently started series of phase II combination trials, the BXX series using agents such as bendamustine, idelalisib, ibrutinib, obinutuzumab, ofatumumab and venetoclax...
March 2016: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/27739372/phosphoinositide-3-kinases-as-the-novel-therapeutic-targets-for-the-inflammatory-diseases-current-and-future-perspectives
#15
Preeti Vyas, Divya Vohora
Recent findings have publicized phosphoinositide-3-kinases (PI3Ks) as novel therapeutic targets, which are also purported to be involved in the complex pathophysiology of inflammatory and various other diseases. They are recognized to participate in the inflammatory cellular responses by modulating the growth, development and proliferation of various immune cells and hence, affect the release of various cytokines and other inflammatory mediators involved in these manifestations. The review presents a brief synopsis of the PI3K/AKT/mTOR signalling pathway along with the current and future prospects of targeting PI3Ks for various diseases, like malignant, autoimmune, inflammatory, cardiovascular, neurological disorders etc...
October 13, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/27733358/pharmacological-restoration-and-therapeutic-targeting-of-the-b-cell-phenotype-in-classical-hodgkin-s-lymphoma
#16
Jing Du, Martin Neuenschwander, Yong Yu, J Henry M Däbritz, Nina-Rosa Neuendorff, Kolja Schleich, Aitomi Bittner, Maja Milanovic, Gregor Beuster, Silke Radetzki, Edgar Specker, Maurice Reimann, Frank Rosenbauer, Stephan Mathas, Philipp Lohneis, Michael Hummel, Bernd Dörken, Jens Peter von Kries, Soyoung Lee, Clemens A Schmitt
Classical Hodgkin's lymphoma (cHL), although originating from B-cells, is characterized by the virtual lack of gene products whose expression constitutes the B-cell phenotype. Epigenetic repression of B-cell-specific genes via promoter hypermethylation and histone deacetylation as well as compromised expression of B-cell-committed transcription factors were previously reported to contribute to the lost B-cell phenotype in cHL. Restoring the B-cell phenotype may not only correct a central malignant property, but render cHL susceptible to clinically established antibody therapies targeting B-cell surface receptors or small compounds interfering with B-cell receptor signaling...
October 12, 2016: Blood
https://www.readbyqxmd.com/read/27601462/outcomes-of-cll-patients-treated-with-sequential-kinase-inhibitor-therapy-a-real-world-experience
#17
Anthony R Mato, Chadi Nabhan, Paul M Barr, Chaitra S Ujjani, Brian T Hill, Nicole Lamanna, Alan P Skarbnik, Christina Howlett, Jeffrey J Pu, Alison R Sehgal, Lauren E Strelec, Alexandra Vandegrift, Danielle M Fitzpatrick, Clive S Zent, Tatyana Feldman, Andre Goy, David F Claxton, Spencer Henick Bachow, Gurbakhash Kaur, Jakub Svoboda, Sunita Dwivedy Nasta, David Porter, Daniel J Landsburg, Stephen J Schuster, Bruce D Cheson, Pavel Kiselev, Andrew M Evens
B Cell receptor (BCR) kinase inhibitor (KI) therapy represents a paradigm shift in Chronic Lymphocytic Leukemia (CLL) management, but data on practice patterns after KI discontinuation and optimal sequencing are limited. We conducted a multicenter, retrospective, comprehensive analysis on 178 CLL patients (ibrutinib=143; idelalisib=35) who discontinued KI therapy. We examined responses, toxicity, post-KI therapies, and overall survival (OS). Patients had a median of 3 prior therapies (range 0-11); del17p (34%), p53 mutation (27%), del11q (33%), and complex karyotype (29%)...
September 6, 2016: Blood
https://www.readbyqxmd.com/read/27579615/janus-and-pi3-kinases-mediate-glucocorticoid-resistance-in-activated-chronic-leukemia-cells
#18
Sina Oppermann, Avery J Lam, Stephanie Tung, Yonghong Shi, Lindsay McCaw, Guizhei Wang, Jarkko Ylanko, Brian Leber, David Andrews, David E Spaner
Glucorticoids (GCs) such as dexamethasone (DEX) remain important treatments for Chronic Lymphocytic Leukemia (CLL) but the mechanisms are poorly understood and resistance is inevitable. Proliferation centers (PC) in lymph nodes and bone marrow offer protection against many cytotoxic drugs and circulating CLL cells were found to acquire resistance to DEX-mediated killing in conditions encountered in PCs including stimulation by toll-like receptor agonists and interactions with stromal cells. The resistant state was associated with impaired glucocorticoid receptor-mediated gene expression, autocrine activation of STAT3 through Janus Kinases (JAKs), and increased glycolysis...
August 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27562445/idelalisib-in-waldenstr%C3%A3-m-macroglobulinemia-high-incidence-of-hepatotoxicity
#19
Jorge J Castillo, Joshua N Gustine, Kirsten Meid, Toni Dubeau, Guang Yang, Lian Xu, Zachary R Hunter, Steven P Treon
No abstract text is available yet for this article.
August 26, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27541051/new-drugs-for-follicular-lymphoma
#20
Marc Sorigue, Josep-Maria Ribera, Cristina Motlló, Juan-Manuel Sancho
Despite the improvement in prognosis since the advent of rituximab, follicular lymphoma is still incurable and remains the cause of death of most afflicted patients. With the expanding knowledge of the pathogenesis of B-cell malignancies, in the last few years a plethora of new therapies acting through a variety of mechanisms have shown promising results. This review attempts to analyze the evidence available on these new drugs, which include new monoclonal antibodies and immunoconjugates, the anti-angiogenic and immunomodulatory agent lenalidomide, the proteasome inhibitor bortezomib, inhibitors of B-cell receptor pathway enzymes, such as ibrutinib, idelalisib, duvelisib and entospletinib, BCL2 inhibitors and checkpoint inhibitors...
October 2016: Leukemia Research
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