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https://www.readbyqxmd.com/read/28695630/a-pilot-phase-ii-study-of-ofatumumab-monotherapy-for-extranodal-marginal-zone-b-cell-lymphoma-of-the-mucosa-associated-lymphoid-tissue-malt-lymphoma
#1
Barbara Kiesewetter, Ortrun Neuper, Marius E Mayerhoefer, Werner Dolak, Julius Lukas, Ingrid Simonitsch-Klupp, Markus Raderer
These are the final results of the Ofatumumab in MALT lymphoma study (O-MA 1), a pilot phase II trial evaluating the capacity and safety of ofatumumab to induce objective responses in patients with Helicobacter pylori eradication refractory or extragastric MALT lymphoma. Ofatumumab was given at 4 weekly doses (1000 mg) followed by 4 doses at 2-month intervals starting at week 8. According to protocol, a total of 16 patients were recruited (median age 69 years; range 38-85). Thirty one percent (5/16) of patients had primary gastric MALT lymphoma while the remaining 69% (11/16) presented with extragastric manifestations...
July 10, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28695471/ocrelizumab-and-other-cd20-b-cell-depleting-therapies-in-multiple-sclerosis
#2
REVIEW
Jeffrey M Gelfand, Bruce A C Cree, Stephen L Hauser
Selective depletion of CD20(+) B cells by anti-CD20 monoclonal antibodies as monotherapy in multiple sclerosis (MS) profoundly suppresses acute inflammatory disease activity and signifies an important advance in the treatment of relapsing-remitting MS. Ocrelizumab, a humanized anti-CD20 monoclonal antibody, is also the first proven therapy to lessen disability progression in primary progressive MS-a breakthrough for patients with a disease that had no proven therapy. Ocrelizumab is generally well tolerated, with the most common adverse events experienced being infusion reactions and infections...
July 10, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28687625/a-phase-ii-trial-evaluating-the-safety-of-rapid-infusion-of-ofatumumab-in-patients-with-previously-treated-chronic-lymphocytic-leukemia
#3
William Donnellan, Jesus G Berdeja, Diana Shipley, Edward R Arrowsmith, David Wright, Scott Lunin, Richard Brown, James H Essell, Ian W Flinn
LESSONS LEARNED: Ofatumumab infusion reactions can be diminished by escalating the dose rate in individual patients in sequential infusions. BACKGROUND: Ofatumumab (OFA) is a fully humanized, anti-CD20 antibody approved for use in chronic lymphocytic leukemia (CLL). The recommended administration requires long infusion times. We evaluated an accelerated infusion regimen of 2 hours. METHODS: The first dose of OFA (300 mg) was given on week 1 day 1 starting at 3...
July 7, 2017: Oncologist
https://www.readbyqxmd.com/read/28684557/predicting-and-managing-primary-and-secondary-non-response-to-rituximab-using-b-cell-biomarkers-in-systemic-lupus-erythematosus
#4
Md Yuzaiful Md Yusof, Daniel Shaw, Yasser M El-Sherbiny, Emma Dunn, Andy C Rawstron, Paul Emery, Edward M Vital
OBJECTIVE: To assess factors associated with primary and secondary non-response to rituximab in systemic lupus erythematosus (SLE) and evaluate management of secondary non-depletion non-response (2NDNR). METHODS: 125 patients with SLE treated with rituximab over 12 years were studied prospectively. A major clinical response was defined as improvement of all active British Isles Lupus Assessment Group (BILAG)-2004 domains to grade C/better and no A/B flare. Partial responders were defined by one persistent BILAG B...
July 6, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28638602/b-cell-depleting-therapy-with-rituximab-or-ofatumumab-in-immunoglobulin-a-nephropathy-or-vasculitis-with-nephritis
#5
Sigrid Lundberg, Emelie Westergren, Jessica Smolander, Annette Bruchfeld
BACKGROUND: Approximately 30% of adult patients with immunoglobulin A (IgA) nephropathy (IgAN) or IgA vasculitis with nephritis (IgAVN) develop end-stage renal disease during long-term follow-up. In particular, patients with nephritic-nephrotic syndrome have an increased risk of rapid progression. Conventional immunosuppressive therapy with corticosteroids (CSs) may be insufficient for disease control and is associated with a number of side effects. Rituximab (RTX) has been shown to be well tolerated and effective in a range of glomerular diseases, but there is little information on its therapeutic potential in IgAN...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28605680/surrogate-cd16-expressing-effector-cell-lines-for-determining-the-bioactivity-of-therapeutic-monoclonal-antibodies
#6
Shalom A Gurjar, Jeremy P Derrick, Rebecca J Dearman, Robin Thorpe, Simon Hufton, Ian Kimber, Meenu Wadhwa
Traditional antibody dependent cellular cytotoxicity (ADCC) assays use donor derived natural killer (NK) or peripheral blood mononuclear cells, but donor genetic variability and the technically challenging nature of the assay means that alternative in vitro assay formats are required. We explored the utility of two reporter gene cell lines, the J2 and J9, as surrogate effector cells for ADCC assays. Both express the ADCC relevant Fcγ receptor CD16, crosslinking of which leads to firefly luciferase expression...
September 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28596831/ofatumumab-associated-acute-pneumonitis-not-new-but-still-the-first-case
#7
Alice Bonanni, Enrica Bertelli, Chiara Panicucci, Matteo D'Alessandro, Andrea Moscatelli, Elisabetta Lampugnani, Oliviero Sacco, Gian Michele Magnano, Pietro Ravani, Gian Marco Ghiggeri
Ofatumumab is an anti-CD20 humanized monoclonal antibody utilized in the treatment of several clinical conditions resistant to other treatments. In spite there was a general expectation that ofatumumab was less toxic compared to rituximab, side effects have been reported that resemble those of its anti-CD20 chimeric precursor. Here, we describe the first case of Ofatumumab associate lung injury occurring in a 14-year-old boy affected by nephrotic syndrome dependent to prednisone plus cyclosporine A who had been treated with the dose of drug utilized in nephrotic syndrome (1500 mg/173 m(2))...
February 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28592889/extended-follow-up-and-impact-of-high-risk-prognostic-factors-from-the-phase-3-resonate-tm-study-in-patients-with-previously-treated-cll-sll
#8
J R Brown, P Hillmen, S O'Brien, J C Barrientos, N M Reddy, S E Coutre, C S Tam, S P Mulligan, U Jaeger, P M Barr, R R Furman, T J Kipps, F Cymbalista, P Thornton, F Caligaris-Cappio, J Delgado, M Montillo, S DeVos, C Moreno, J M Pagel, T Munir, J A Burger, D Chung, J Lin, L Gau, B Chang, G Cole, E Hsu, D F James, J C Byrd
In the phase 3 RESONATE(TM) study, ibrutinib demonstrated superior progression-free survival (PFS), overall survival (OS), and overall response rate (ORR) compared with ofatumumab in relapsed/refractory CLL patients with high-risk prognostic factors. We report updated results from RESONATE in these traditionally chemotherapy resistant high-risk genomic subgroups at a median follow-up of 19 months. Mutations were detected by Foundation One Heme Panel. Baseline mutations in the ibrutinib arm included TP53 (51%), SF3B1 (31%), NOTCH1 (28%), ATM (19%), and BIRC3 (14%)...
June 8, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28584371/shifting-focus-in-the-therapeutics-of-immunobullous-disease
#9
Abhishek De, Asad Ansari, Nidhi Sharma, Aarti Sarda
Therapeutics of autoimmune bullous disease has seen a major shift of focus from more global immunosuppression to targeted immunotherapy. Anti CD 20 monoclonal antibody Rituximab revolutionized the therapeutics of autoimmune bullous disease particularly pemphigus. Though it is still being practiced off-label, evidences in the form of RCT and meta analysis are now available. Other novel anti CD 20 monoclonal antibodies like ofatumumab, veltuzumab, and ocrelizumab, tositumomab or obinutuzumab/GA101 may add to the therapeutic options in coming days...
May 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28580841/safety-and-efficacy-of-ofatumumab-in-chronic-lymphocytic-leukemia-a-systematic-review-and-meta-analysis
#10
Yougen Wu, Yang Wang, Yuting Gu, Ju Xia, Xiaoyang Kong, Qingqing Qian, Yang Hong
OBJECTIVES: Increasing numbers of clinical studies have been carried out to investigate the therapeutic effect of Ofatumumab for patients with chronic lymphocytic leukemia (CLL) but no studies have yet reported a pooled estimate of the treatment effect. We performed a meta-analysis of evidence from 13 clinical trials to assess effectiveness and safety of Ofatumumab-based therapy in patients with CLL. METHODS: Relevant publications from PubMed, Web of Science, Embase, and ClinicalTrials...
June 3, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28559746/estimating-outcomes-and-cost-effectiveness-using-a-single-arm-clinical-trial-ofatumumab-for-double-refractory-chronic-lymphocytic-leukemia
#11
Anthony J Hatswell, Gwilym J Thompson, Penny A Maroudas, Oleg Sofrygin, Thomas E Delea
BACKGROUND: Ofatumumab (Arzerra(®), Novartis) is a treatment for chronic lymphocytic leukemia refractory to fludarabine and alemtuzumab [double refractory (DR-CLL)]. Ofatumumab was licensed on the basis of an uncontrolled Phase II study, Hx-CD20-406, in which patients receiving ofatumumab survived for a median of 13.9 months. However, the lack of an internal control arm presents an obstacle for the estimation of comparative effectiveness. METHODS: The objective of the study was to present a method to estimate the cost effectiveness of ofatumumab in the treatment of DR-CLL...
2017: Cost Effectiveness and Resource Allocation: C/E
https://www.readbyqxmd.com/read/28516439/reassessment-of-anti-cd20-therapy-in-lymphoid-malignancies-impact-limitations-and-new-directions
#12
REVIEW
Patrick M Reagan, Jonathan W Friedberg
The addition of anti-CD20 monoclonal antibodies to the treatment of B-cell malignancies has dramatically affected the field as well as the lives of patients. Rituximab in particular has been combined safely with conventional chemotherapy and has resulted in improved overall survival in major histologic subtypes of B-cell lymphoma and chronic lymphocytic leukemia. It is incorporated into the standard initial treatment of nearly all of these diseases. Novel anti-CD20 antibodies are currently under development...
May 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28499646/dancing-partners-at-the-ball-rational-selection-of-next-generation-anti-cd20-antibodies-for-combination-therapy-of-chronic-lymphocytic-leukemia-in-the-novel-agents-era
#13
REVIEW
L A Butler, C S Tam, J F Seymour
The anti-CD20 antibodies represent a major advancement in the therapeutic options available for chronic lymphocytic leukemia. The addition of rituximab, ofatumumab and obinutuzumab to various chemotherapy regimens has led to considerable improvements in both response and survival. Ocaratuzumab, veltuzumab and ublituximab are currently being explored within the trial setting. We review the current status of these antibodies, and discuss how their mechanisms of action may impact on the choice of combinations with novel small molecule agents...
May 3, 2017: Blood Reviews
https://www.readbyqxmd.com/read/28456094/new-biologics-in-the-treatment-of-rare-glomerular-diseases-of-childhood
#14
REVIEW
Paolo Cravedi, Andrea Angeletti, Giuseppe Remuzzi
Minimal change disease and focal segmental glomerulosclerosis are rare but important causes of end-stage kidney disease in children. Though their pathogenesis is still unclear, evidence of immune abnormalities provided the background for the use of immunosuppressive drugs, such as corticosteroids, calcineurin inhibitors, antiproliferative and alkylating agents. Unfortunately, these treatments fail to achieve a sustained remission in a significant portion of patients and are burdened by significant toxicities...
April 26, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28450895/targeting-b-cells-in-relapsing-remitting-multiple-sclerosis-from-pathophysiology-to-optimal-clinical-management
#15
REVIEW
Stefan Bittner, Tobias Ruck, Heinz Wiendl, Oliver M Grauer, Sven G Meuth
Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease that is caused by an autoimmune response against central nervous system (CNS) structures. Traditionally considered a T-cell-mediated disorder, the contribution of B cells to the pathogenesis of MS has long been debated. Based on recent promising clinical results from CD20-depleting strategies by three therapeutic monoclonal antibodies in clinical phase II and III trials (rituximab, ocrelizumab and ofatumumab), targeting B cells in MS is currently attracting growing interest among basic researchers and clinicians...
January 2017: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/28439883/an-update-for-richter-syndrome-new-directions-and-developments
#16
REVIEW
Toby A Eyre, Anna Schuh
High-grade transformation of chronic lymphocytic leukaemia [Richter syndrome (RS)] is rare and represents a unique and uncommon clinical challenge. Clonally related diffuse large B cell type RS is a chemotherapy-resistant and devastating disease. Patients are typically elderly, immunosuppressed and present with a rapidly deteriorating performance status. Historical outcomes suggest a median overall survival of approximately 8 months. RS remains is an area of high unmet clinical need. The molecular profile and treatment needs of patients are likely to change over time with the advent of novel B cell receptor inhibitors, monoclonal antibodies and BH3 mimetics...
April 25, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28421390/ofatumumab-combined-with-chlorambucil-for-previously-untreated-chronic-lymphocytic-leukemia-a-phase-i-ii-open-label-study-in-japan
#17
Kiyohiko Hatake, Michinori Ogura, Kohichi Takada, Masafumi Taniwaki, Fanghong Zhang, Taizo Fujita, Kiyoshi Ando
Elderly/comorbid patients with chronic lymphocytic leukemia (CLL) require low-toxicity treatments. Internationally, the standard treatment for such patients is chlorambucil and an anti-CD20 therapy; however, chlorambucil is not approved in Japan. The aim of the present study was to evaluate the safety, efficacy and pharmacokinetics of ofatumumab in combination with chlorambucil in Japanese patients with previously untreated CLL who were inappropriate for fludarabine-based therapy. Ten patients were enrolled and treated in this study, all of whom received at least one dose of the study drugs...
August 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28314744/randomised-controlled-trial-comparing-ofatumumab-to-rituximab-in-children-with-steroid-dependent-and-calcineurin-inhibitor-dependent-idiopathic-nephrotic-syndrome-study-protocol
#18
Pietro Ravani, Alice Bonanni, Gian Marco Ghiggeri
INTRODUCTION: Oral steroids induce remission in about 90% of children with idiopathic nephrotic syndrome (INS), which is characterised by severe proteinuria and hypoalbuminaemia. Some children become steroid-dependent (SD) and require addition of calcineurin inhibitors (CNI) to maintain remission. Since these oral agents are toxic, alternative interventions are needed for long-term treatment. The anti-CD20 antibody rituximab has shown promising steroid-sparing properties in clinical trials, but benefits are less convincing in complicated forms of SD-INS...
March 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28273193/-drug-therapy-of-lymphomas
#19
Lajos Gergely
The therapy of lymphomas has undergone a major expansion during the last decade. Novel therapeutic targets have appeared beyond classical chemotherapeutic combinations. These novel drugs have very pronounced action across lymphoma types, and their toxicity profile is usually better tolerable compared to standard chemotherapies. These new therapies are enabling us to offer treatment to those patients who have refractory disease, and we had no option to treat them before these drugs. The author describes several new therapeutic options...
March 8, 2017: Magyar Onkologia
https://www.readbyqxmd.com/read/28269762/cloning-and-molecular-characterization-of-the-cdnas-encoding-the-variable-regions-of-an-anti-cd20-monoclonal-antibody
#20
Dariush Shanehbandi, Jafar Majidi, Tohid Kazemi, Behzad Baradaran, Leili Aghebati-Maleki
BACKGROUND: CD20-based targeting of B-cells in hematologic malignancies and autoimmune disorders is associated with outstanding clinical outcomes. Isolation and characterization of VH and VL cDNAs encoding the variable regions of the heavy and light chains of monoclonal antibodies (MAb) is necessary to produce next generation MAbs and their derivatives such as and bispecific antibodies (bsAb) and single-chain variable fragments (scFv). OBJECTIVE: This study was aimed at cloning and characterization of the VH and VL cDNAs from a hybridoma cell against the CD20 antigen...
February 24, 2017: Human Antibodies
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