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Idelalisib

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https://www.readbyqxmd.com/read/28081486/front-line-treatment-of-cll-in-the-era-of-novel-agents
#1
REVIEW
Tadeusz Robak, Stephan Stilgenbauer, Alessandra Tedeschi
Although chemoimmunotherapy prolongs survival and as such, is the standard of care for treatment-naïve patients, its effectiveness may be reduced by associated toxicity and dose reductions. In addition, it has been associated with the development of myelosuppression and secondary neoplasms; treatments are hence needed which offer greater survival and lowered toxicity. A range of new targeted agents, ibrutinib, idelalisib and venetoclax, have demonstrated such a balance in a second-line setting, offering CLL patients durable remissions and a modest toxicity profile...
December 30, 2016: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28062113/indirect-treatment-comparisons-of-ibrutinib-versus-physician-s-choice-and-idelalisib-plus-ofatumumab-in-patients-with-previously-treated-chronic-lymphocytic-leukemia
#2
REVIEW
Sonja Sorensen, Mark Wildgust, Nishan Sengupta, Cristina Trambitas, Joris Diels, Suzy van Sanden, Yingxin Xu, Emily Dorman
PURPOSE: Treatment options for patients with relapsed or refractory chronic lymphocytic leukemia (R/R CLL) are limited. Until recently, few effective treatment options existed, and even with the advent of new agents, studies evaluating comparative efficacy are scarce. In the Ibrutinib Versus Ofatumumab in Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia (RESONATE) Phase III study, ibrutinib, an oral, once-a-day, first-in-class covalent Bruton tyrosine kinase inhibitor, improved progression-free survival (PFS) and overall survival (OS) compared with ofatumumab (PFS hazard ratio [HR] = 0...
January 3, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28061982/pi3k-signaling-pathway-in-normal-b-cells-and-indolent-b-cell-malignancies
#3
REVIEW
Georgios Pongas, Bruce D Cheson
In chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphomas (NHLs), B-cell receptor signaling leads to activation of the phosphatidylinositol 3-kinase (PI3K) pathway. Idelalisib, a PI3Kδ inhibitor was approved in 2014 by the US Food and Drug Administration (FDA) in combination with rituximab for the treatment of patients with CLL for whom single-agent rituximab would be considered appropriate and as a single agent for patients with relapsed small lymphocytic lymphoma (SLL) and relapsed follicular lymphoma (FL)...
December 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/28056525/venetoclax
#4
Amber C King, Tim J Peterson, Troy Z Horvat, Mabel Rodriguez, Laura A Tang
OBJECTIVE: To review the pharmacology, efficacy, and safety of venetoclax for treatment of lymphoid malignancies. DATA SOURCES: A literature search was performed of PubMed and MEDLINE databases (2005 to September 2016), abstracts from the American Society of Hematology and the American Society of Clinical Oncology, and ongoing studies from clinicaltrials.gov. Searches were performed utilizing the following key terms: venetoclax, ABT-199, GDC-199, obatoclax, GX15-070, BCL-2 inhibitor, navitoclax, ABT-263, and Venclexta...
December 1, 2016: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28043854/compound-selectivity-and-target-residence-time-of-kinase-inhibitors-studied-with-surface-plasmon-resonance
#5
Nicole Willemsen-Seegers, Joost C M Uitdehaag, Martine B W Prinsen, Judith R F de Vetter, Jos de Man, Masaaki Sawa, Yusuke Kawase, Rogier C Buijsman, Guido J R Zaman
Target residence time (τ) has been suggested to be a better predictor of the biological activity of kinase inhibitors than inhibitory potency (IC50) in enzyme assays. Surface plasmon resonance binding assays for 46 human protein and lipid kinases were developed. The association and dissociation constants of 80 kinase inhibitor interactions were determined. τ and equilibrium affinity constants (KD) were calculated to determine kinetic selectivity. Comparison of τ and KD or IC50 values revealed a strikingly different view on the selectivity of several kinase inhibitors, including the multi-kinase inhibitor ponatinib, which was tested on 10 different kinases...
December 30, 2016: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28032146/effects-of-31-fda-approved-small-molecule-kinase-inhibitors-on-isolated-rat-liver-mitochondria
#6
Jun Zhang, Alec Salminen, Xi Yang, Yong Luo, Qiangen Wu, Matthew White, James Greenhaw, Lijun Ren, Matthew Bryant, William Salminen, Thomas Papoian, William Mattes, Qiang Shi
The FDA has approved 31 small-molecule kinase inhibitors (KIs) for human use as of November 2016, with six having black box warnings for hepatotoxicity (BBW-H) in product labeling. The precise mechanisms and risk factors for KI-induced hepatotoxicity are poorly understood. Here, the 31 KIs were tested in isolated rat liver mitochondria, an in vitro system recently proposed to be a useful tool to predict drug-induced hepatotoxicity in humans. The KIs were incubated with mitochondria or submitochondrial particles at concentrations ranging from therapeutic maximal blood concentrations (Cmax) levels to 100-fold Cmax levels...
December 28, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/28025783/idelalisib-induced-colitis-and-skin-eruption-mimicking-graft-versus-host-disease
#7
Muhammad Bader Hammami, Ahmad Al-Taee, Marshall Meeks, Mark Fesler, M Yadira Hurley, Dengfeng Cao, Jin-Ping Lai
INTRODUCTION: Idelalisib is a selective inhibitor of the delta isoform of phosphatidylinositol 3-kinase which was approved by the United States Federal Drug Administration in 2014 for the treatment of relapsed chronic lymphocytic leukemia and indolent non-Hodgkin lymphoma. Drug-induced injury of the gastrointestinal tract is a relatively frequent but usually under-recognized disease entity. CASE PRESENTATION: We report the case of a 56-year-old male with a history of relapsed follicular lymphoma status post allogenic bone marrow transplant who developed severe diarrhea with a skin eruption mimicking graft-versus-host disease (GVHD) 6 months after starting idelalisib...
December 26, 2016: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28008149/idelalisib-induces-puma-dependent-apoptosis-in-colon-cancer-cells
#8
Shida Yang, Zhiyong Zhu, Xiaobing Zhang, Ning Zhang, Zhicheng Yao
Idelalisib, a PI3K inhibitor, specifically targeting p110δ, has been approved for the treatment of chronic lymphocytic leukemia/small lymphocytic lymphoma and follicular lymphoma. However, the mechanisms of action of idelalisib in colon cancer cells are not well understood. We investigated how idelalisib suppresses colon cancer cells growth and potentiates effects of other chemotherapeutic drugs. In this study, we found that idelalisib treatment induces PUMA in colon cancer cells irrespective of p53 status through the p65 pathway following AKT inhibition and glycogen synthase kinase 3β (GSK3β) activation...
December 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/27979923/efficacy-and-safety-of-idelalisib-in-patients-with-relapsed-rituximab-and-alkylating-agent-refractory-follicular-lymphoma-a-subgroup-analysis-of-a-phase-2-study
#9
Gilles Salles, Stephen J Schuster, Sven de Vos, Nina D Wagner-Johnston, Andreas Viardot, Kristie A Blum, Christopher R Flowers, Wojciech J Jurczak, Ian W Flinn, Brad S Kahl, Peter Martin, Yeonhee Kim, Sanatan Shreay, Matthias Will, Bess Sorensen, Madlaina Breuleux, Pier Luigi Zinzani, Ajay K Gopal
No abstract text is available yet for this article.
December 15, 2016: Haematologica
https://www.readbyqxmd.com/read/27913471/sequencing-of-chronic-lymphocytic-leukemia-therapies
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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...
December 2016: Oncology Reports
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