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Ibrutinib

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https://www.readbyqxmd.com/read/28734581/discovery-of-r-5-benzo-d-1-3-dioxol-5-yl-7-1-vinylsulfonyl-pyrrolidin-2-yl-methyl-7h-pyrrolo-2-3-d-pyrimidin-4-amine-b6-as-a-potent-bmx-inhibitor-for-the-treatment-of-nsclc
#1
Linhong He, Da Li, Chufeng Zhang, Peng Bai, Lijuan Chen
Described as a Btk inhibitor, ibrutinib also potently inhibits Bmx and EGFR, two good targets for lung cancer. Owing to its high CLogP (4.07) and low aqueous solubility (<0.01mg/ml), resulting in unfavorable bioavailability, ibrutinib requires high dosages to achieve good clinical response in the treatment of non-small cell lung cancer (NSCLC). In our effort to improve the CLogP of ibrutinib by structural optimization led to the discovery of a potent anti-cancer agent B6, with beneficial physicochemical parameters (CLogP=2...
July 4, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28728450/chronic-lymphocytic-leukemia-in-a-patient-with-well-controlled-hiv-infection-successful-treatment-with-ibrutinib
#2
James T England, Heather A Leitch
No abstract text is available yet for this article.
July 21, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28720054/impact-of-novel-agents-on-patient-relevant-outcomes-in-patients-with-previously-untreated-cll-who-are-not-eligible-for-fludarabine-based-therapy
#3
Moushmi Singh, Stuart Mealing, Simona Baculea, Sarah Cote, Jo Whelan
BACKGROUND: Chronic lymphocytic leukemia (CLL) is an orphan disease that primarily affects the elderly. The majority of symptomatic patients eligible for frontline treatment are unfit for fludarabine based chemoimmunotherapy. Historical treatment includes chlorambucil (Chl), bendamustine/rituximab (BR), and chlorambucil/rituximab/ChlR combination. Clinical guidelines now recommend the use of novel agents, such as ibrutinib (Ibr), in both frontline and relapse settings and other novel agents, such as idelalisib (with rituximab), in relapse settings...
July 19, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28716053/ibrutinib-a-bruton-s-tyrosine-kinase-inhibitor-exhibits-antitumoral-activity-and-induces-autophagy-in-glioblastoma
#4
Jin Wang, Xiaoyang Liu, Yongzhi Hong, Songtao Wang, Pin Chen, Aihua Gu, Xiaoyuan Guo, Peng Zhao
BACKGROUND: Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults. Ibrutinib, a Bruton's tyrosine kinase (BTK) inhibitor, is a novel anticancer drug used for treating several types of cancers. In this study, we aimed to determine the role of ibrutinib on GBM. METHODS: Cell proliferation was determined by using cell viability, colony formation, and 5-ethynyl-2'-deoxyuridine (EdU) assays. Cell cycle and cell apoptosis were analyzed by flow cytometry...
July 17, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28715249/durable-molecular-remissions-in-chronic-lymphocytic-leukemia-treated-with-cd19-specific-chimeric-antigen-receptor-modified-t-cells-after-failure-of-ibrutinib
#5
Cameron J Turtle, Kevin A Hay, Laïla-Aïcha Hanafi, Daniel Li, Sindhu Cherian, Xueyan Chen, Brent Wood, Arletta Lozanski, John C Byrd, Shelly Heimfeld, Stanley R Riddell, David G Maloney
Purpose We evaluated the safety and feasibility of anti-CD19 chimeric antigen receptor-modified T (CAR-T) cell therapy in patients with chronic lymphocytic leukemia (CLL) who had previously received ibrutinib. Methods Twenty-four patients with CLL received lymphodepleting chemotherapy and anti-CD19 CAR-T cells at one of three dose levels (2 × 10(5), 2 × 10(6), or 2 × 10(7) CAR-T cells/kg). Nineteen patients experienced disease progression while receiving ibrutinib, three were ibrutinib intolerant, and two did not experience progression while receiving ibrutinib...
July 17, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28714866/ibrutinib-treatment-improves-t-cell-number-and-function-in-cll-patients
#6
Meixiao Long, Kyle Beckwith, Priscilla Do, Bethany L Mundy, Amber Gordon, Amy M Lehman, Kami J Maddocks, Carolyn Cheney, Jeffrey A Jones, Joseph M Flynn, Leslie A Andritsos, Farrukh Awan, Joseph A Fraietta, Carl H June, Marcela V Maus, Jennifer A Woyach, Michael A Caligiuri, Amy J Johnson, Natarajan Muthusamy, John C Byrd
BACKGROUND: Ibrutinib has been shown to have immunomodulatory effects by inhibiting Bruton's tyrosine kinase (BTK) and IL-2-inducible T cell kinase (ITK). The relative importance of inhibiting these 2 kinases has not been examined despite its relevance to immune-based therapies. METHODS: Peripheral blood mononuclear cells from chronic lymphocytic leukemia (CLL) patients on clinical trials of ibrutinib (BTK/ITK inhibitor; n = 19) or acalabrutinib (selective BTK inhibitor; n = 13) were collected serially...
July 17, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28714377/ibrutinib-associated-tumor-lysis-syndrome-in-chronic-lymphocytic-leukemia-small-lymphocytic-lymphoma-and-mantle-cell-lymphoma-a-case-series-and-review-of-the-literature
#7
Krystal S Titus-Rains, Jamie N Brown, Julia M Hammond
Background Tumor lysis syndrome results when intracellular contents are released during cell lysis. Ibrutinib, a Bruton tyrosine kinase inhibitor, is used for the treatment of chronic lymphocytic leukemia, small lymphocytic lymphoma, Waldenström's macroglobulinemia, mantle cell lymphoma, and marginal zone lymphoma. Tumor lysis syndrome caused by ibrutinib therapy is potentially life threatening, but is rare and not often reported in clinical trials. Objective The purpose of this case series is to describe the occurrence of tumor lysis syndrome in two patients initiated on ibrutinib, and to highlight the importance of close monitoring during therapy...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28710251/role-for-zap-70-signaling-in-the-differential-effector-functions-of-rituximab-and-obinutuzumab-ga101-in-chronic-lymphocytic-leukemia-b-cells
#8
Sladjana Skopelja-Gardner, Jonathan D Jones, B JoNell Hamilton, Alexey V Danilov, William F C Rigby
Rituximab (RTX) has been the hallmark anti-CD20 mAb for the treatment of B cell neoplasms, including B cell chronic lymphocytic leukemia (B-CLL). Recently, a novel humanized anti-CD20 mAb obinutuzumab (GA101) has been implemented as first-line CLL therapy. Treatment of CLL patients with RTX is associated with CD20 loss via an FcγR-mediated process, trogocytosis. RTX-induced trogocytosis has been characterized as both the means of resistance to therapy, via loss of cell surface target proteins (antigenic modulation), as well as a process that alters B cell phenotype and function...
July 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28708231/ibrutinib-treatment-of-a-patient-with-relapsing-chronic-lymphocytic-leukemia-and-sustained-remission-of-richter-syndrome
#9
Elisa Albi, Stefano Baldoni, Patrizia Aureli, Erica Dorillo, Beatrice Del Papa, Stefano Ascani, Mauro Di Ianni, Franca Falzetti, Paolo Sportoletti
PURPOSE: Richter syndrome (RS) is a rare event in chronic lymphocytic leukemia (CLL) that is influenced by biological factors and prior CLL treatments. Ibrutinib is a Bruton tyrosine kinase inhibitor that has shown remarkable efficacy in CLL; however, little is known about its relationship to RS. We report a case of ibrutinib efficacy against CLL in a patient with prolonged remission of RS. METHODS: The patient was diagnosed with CLL in 2003. Biological findings at onset included absent ZAP70 expression, mutated IGVH, and NOTCH1 mutation...
July 5, 2017: Tumori
https://www.readbyqxmd.com/read/28705083/pyrrolo-2-3-d-pyrimidines-active-as-btk-inhibitors
#10
Francesca Musumeci, Monica Sanna, Chiara Greco, Ilaria Giacchello, Anna Lucia Fallacara, Rosario Amato, Silvia Schenone
Btk is a tyrosine kinase dysregulated in several B-cell malignancies and autoimmune diseases, and this has given rise to a search for Btk inhibitors. Nevertheless, only one Btk inhibitor, ibrutinib, has been approved to date, although other compounds are currently being evaluated in clinical trials or in preclinal stages. Area covered: This review, after a brief introduction on Btk and its inhibitors already in clinical trials, focusses on pyrrolo[2,3-d]pyrimidine derivatives patented in the last five years as Btk inhibitors...
July 13, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28700792/association-of-ibrutinib-treatment-with-bleeding-complications-in-cutaneous-surgery
#11
Cindy E Parra, Emily Newsom, Erica H Lee, John N Allan, Kira Minkis
No abstract text is available yet for this article.
July 12, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28696801/analysis-of-the-risk-of-infection-in-patients-with-chronic-lymphocytic-leukemia-in-the-era-of-novel-therapies
#12
AnnaLynn M Williams, Andrea M Baran, Philip J Meacham, Megan M Feldman, Hugo E Valencia, Catherine Newsom-Stewart, Nealansh Gupta, Michelle C Janelsins, Paul M Barr, Clive S Zent
We studied the risk of infections in patients with chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL). Major infections were defined as requiring hospital admission or intravenous antimicrobial treatment. Incidence rate (IR) ratios (IRR) were used to compare infection rates. Of 263 CLL patients followed for 936.9 person-years, 60% required treatment for progressive CLL (66 received ibrutinib). Infections occurred in 71.9% patients (IR 92.4/100 person-years) with 31.9% having major infections (IR 20...
July 11, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28695755/ibrutinib-therapy-is-effective-in-b-cell-prolymphocytic-leukemia-exhibiting-myc-aberrations
#13
Moussab Damlaj, Mohammed Al Balwi, Areej M Al Mugairi
No abstract text is available yet for this article.
July 11, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28693376/ibrutinib-induced-acute-liver-failure
#14
Allon Kahn, Jennifer L Horsley-Silva, Dora M Lam-Himlin, Craig B Reeder, David D Douglas, Elizabeth J Carey
No abstract text is available yet for this article.
July 11, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28690529/successful-treatment-of-richter-transformation-with-ibrutinib-in-a-patient-with-chronic-lymphocytic-leukemia-following-allogeneic-hematopoietic-stem-cell-transplant
#15
Samip Master, Cheri Leary, Amol Takalkar, James Coltelingam, Richard Mansour, Glenn M Mills, Nebu Koshy
Patients with chronic lymphocytic leukemia (CLL) who progress to Richter transformation (RT) have a poor prognosis. Multi-agent chemotherapy regimens do not have good response rates. There are few case reports on the use of ibrutinib in RT. Here, we present a patient who was heavily pretreated for CLL, including allogeneic stem cell transplant, and progressed to RT. She had a mixed response to multi-agent chemotherapy and was started on ibrutinib. She had a complete response for 16 months on single-agent ibrutinib with minimal toxicity...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28665232/integrating-novel-drugs-to-chemoimmunotherapy-in-diffuse-large-b-cell-lymphoma
#16
Annalisa Chiappella, Elisa Santambrogio, Alessia Castellino, Maura Nicolosi, Umberto Vitolo
Diffuse Large B-cell Lymphoma (DLBCL) is the most common aggressive non-Hodgkin lymphoma (NHL), with an incidence in Europe of 3.8/100.000/year. A multi-drugs chemoimmunotherapy regimen, containing rituximab, cyclophosphamide, vincristine, doxorubicin and prednisone (R-CHOP) administrated every 21 days, is the standard therapy for DLBCL patients. The discovery of several biological features of DLBCL has encouraged the introduction of novel drugs in the treatment. Areas covered: In this article, the use of standard therapies will be reviewed and will be investigated adoption of novel drugs such as Bortezomib, Bruton's tyrosine kinase, IMiDs, Venetoclax, mTOR inhibitors and other biological agents...
June 30, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28663582/bet-protein-proteolysis-targeting-chimera-protac-exerts-potent-lethal-activity-against-mantle-cell-lymphoma-cells
#17
B Sun, W Fiskus, Y Qian, K Rajapakshe, K Raina, K G Coleman, A P Crew, A Shen, D T Saenz, C P Mill, A J Nowak, N Jain, L Zhang, M Wang, J D Khoury, C Coarfa, C M Crews, K N Bhalla
Bromodomain extraterminal protein (BETP) inhibitors transcriptionally repress oncoproteins and NFkB target genes, which undermines the growth and survival of MCL cells. However, BETi treatment causes accumulation of BETPs, associated with reversible binding and incomplete inhibition of BRD4, which potentially compromises the activity of BETi in MCL cells. Unlike BETi, BET-PROTACs (proteolysis-targeting chimera) ARV-825 and ARV-771 (Arvinas, Inc.) recruit and utilize an E3-ubiquitin ligase to effectively degrade BETPs in MCL cells...
June 30, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28659336/ibrutinib-may-impair-serological-responses-to-influenza-vaccination
#18
Abby P Douglas, Jason A Trubiano, Ian Barr, Vivian K Leung, Monica A Slavin, Constantine S Tam
No abstract text is available yet for this article.
June 28, 2017: Haematologica
https://www.readbyqxmd.com/read/28646116/tonic-b-cell-receptor-signaling-in-diffuse-large-b-cell-lymphoma
#19
Ondrej Havranek, Jingda Xu, Stefan Köhrer, Zhiqiang Wang, Lisa Becker, Justin M Comer, Jared Henderson, Wencai Ma, John Man Chun Ma, Jason R Westin, Dipanjan Ghosh, Nicholas Shinners, Luhong Sun, Allen F Yi, Anusha R Karri, Jan A Burger, Tomasz Zal, R Eric Davis
We used CRISPR/Cas9-mediated genomic modification to investigate B-cell receptor (BCR) signaling in cell lines of diffuse large B-cell lymphoma (DLBCL). Three manipulations that altered BCR genes without affecting surface BCR levels showed that BCR signaling differs between the germinal center B-cell (GCB) subtype, which is insensitive to BTK inhibition by ibrutinib, and the activated B-cell (ABC) subtype. Replacing antigen-binding BCR regions had no effect on BCR signaling in GCB-DLBCL lines, reflecting this subtype's exclusive use of tonic BCR signaling...
June 23, 2017: Blood
https://www.readbyqxmd.com/read/28641630/-sdf-1%C3%AE-cxcr4-mediated-drug-resistance-can-be-reversed-by-ibrutinib-in-acute-lymphoblastic-leukemia
#20
Yuan-Yuan Hu, Shan-Dong Tao, Jing-Jing Ma, Li-Tao Zhou, Yue Chen, Liang Yu
OBJECTIVE: To explore the effect of Ibrutinib on the chemoresistance mediated by SDF-1α/CXCR4 axis in ALL cells. METHODS: Flow cytometry was used to detect the apoptosis of cell line and expression of surface membrane CXCR4, Western blot was used to determine the expression level of CXCR4, ERK and Bcl-xL proteins, qPCR was used to assay the mRNA level of CXCR4. RESULTS: Ibrutinib enhanced the apoptosis induced by adriamycin(ADR) (17.100±4...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
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