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https://www.readbyqxmd.com/read/29336888/lxr-apoe-activation-restricts-innate-immune-suppression-in-cancer
#1
Masoud F Tavazoie, Ilana Pollack, Raissa Tanqueco, Benjamin N Ostendorf, Bernardo S Reis, Foster C Gonsalves, Isabel Kurth, Celia Andreu-Agullo, Mark L Derbyshire, Jessica Posada, Shugaku Takeda, Kimia N Tafreshian, Eric Rowinsky, Michael Szarek, Roger J Waltzman, Elizabeth A Mcmillan, Connie Zhao, Monica Mita, Alain Mita, Bartosz Chmielowski, Michael A Postow, Antoni Ribas, Daniel Mucida, Sohail F Tavazoie
Therapeutic harnessing of adaptive immunity via checkpoint inhibition has transformed the treatment of many cancers. Despite unprecedented long-term responses, most patients do not respond to these therapies. Immunotherapy non-responders often harbor high levels of circulating myeloid-derived suppressor cells (MDSCs)-an immunosuppressive innate cell population. Through genetic and pharmacological approaches, we uncovered a pathway governing MDSC abundance in multiple cancer types. Therapeutic liver-X nuclear receptor (LXR) agonism reduced MDSC abundance in murine models and in patients treated in a first-in-human dose escalation phase 1 trial...
January 9, 2018: Cell
https://www.readbyqxmd.com/read/29320474/high-response-rate-to-pd-1-blockade-in-desmoplastic-melanomas
#2
Zeynep Eroglu, Jesse M Zaretsky, Siwen Hu-Lieskovan, Dae Won Kim, Alain Algazi, Douglas B Johnson, Elizabeth Liniker, Ben Kong, Rodrigo Munhoz, Suthee Rapisuwon, Pier Federico Gherardini, Bartosz Chmielowski, Xiaoyan Wang, I Peter Shintaku, Cody Wei, Jeffrey A Sosman, Richard W Joseph, Michael A Postow, Matteo S Carlino, Wen-Jen Hwu, Richard A Scolyer, Jane Messina, Alistair J Cochran, Georgina V Long, Antoni Ribas
Desmoplastic melanoma is a rare subtype of melanoma characterized by dense fibrous stroma, resistance to chemotherapy and a lack of actionable driver mutations, and is highly associated with ultraviolet light-induced DNA damage. We analysed sixty patients with advanced desmoplastic melanoma who had been treated with antibodies to block programmed cell death 1 (PD-1) or PD-1 ligand (PD-L1). Objective tumour responses were observed in forty-two of the sixty patients (70%; 95% confidence interval 57-81%), including nineteen patients (32%) with a complete response...
January 10, 2018: Nature
https://www.readbyqxmd.com/read/29283791/durable-complete-response-after-discontinuation-of-pembrolizumab-in-patients-with-metastatic-melanoma
#3
Caroline Robert, Antoni Ribas, Omid Hamid, Adil Daud, Jedd D Wolchok, Anthony M Joshua, Wen-Jen Hwu, Jeffrey S Weber, Tara C Gangadhar, Richard W Joseph, Roxana Dronca, Amita Patnaik, Hassane Zarour, Richard Kefford, Peter Hersey, Jin Zhang, James Anderson, Scott J Diede, Scot Ebbinghaus, F Stephen Hodi
Purpose Pembrolizumab provides durable antitumor activity in metastatic melanoma, including complete response (CR) in about 15% of patients. Data are limited on potential predictors of CR and patient disposition after pembrolizumab discontinuation after CR. We describe baseline characteristics and long-term follow-up in patients who experienced CR with pembrolizumab in the KEYNOTE-001 study ( ClinicalTrials.gov identifier: NCT01295827). Patients and Methods Patients with ipilimumab-naive or -treated advanced/metastatic melanoma received one of three dose regimens of pembrolizumab...
December 28, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29247021/first-in-class-erk1-2-inhibitor-ulixertinib-bvd-523-in-patients-with-mapk-mutant-advanced-solid-tumors-results-of-a-phase-i-dose-escalation-and-expansion-study
#4
Ryan J Sullivan, Jeffrey R Infante, Filip Janku, Deborah Jean Lee Wong, Jeffrey A Sosman, Vicki Keedy, Manish R Patel, Geoffrey I Shapiro, James W Mier, Anthony W Tolcher, Andrea Wang-Gillam, Mario Sznol, Keith Flaherty, Elizabeth Buchbinder, Richard D Carvajal, Anna M Varghese, Mario E Lacouture, Antoni Ribas, Sapna P Patel, Gary A DeCrescenzo, Caroline M Emery, Anna L Groover, Saurabh Saha, Mary Varterasian, Dean J Welsch, David M Hyman, Bob T Li
Ulixertinib (BVD-523) is an ERK1/2 kinase inhibitor with potent preclinical activity in BRAF- and RAS-mutant cell lines. In this multicenter phase I trial (NCT01781429), 135 patients were enrolled to an accelerated 3 + 3 dose-escalation cohort and six distinct dose-expansion cohorts. Dose escalation included 27 patients, dosed from 10 to 900 mg twice daily and established the recommended phase II dose (RP2D) of 600 mg twice daily. Ulixertinib exposure was dose proportional to the RP2D, which provided near-complete inhibition of ERK activity in whole blood...
December 15, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/29229836/single-cell-analysis-resolves-the-cell-state-transition-and-signaling-dynamics-associated-with-melanoma-drug-induced-resistance
#5
Yapeng Su, Wei Wei, Lidia Robert, Min Xue, Jennifer Tsoi, Angel Garcia-Diaz, Blanca Homet Moreno, Jungwoo Kim, Rachel H Ng, Jihoon W Lee, Richard C Koya, Begonya Comin-Anduix, Thomas G Graeber, Antoni Ribas, James R Heath
Continuous BRAF inhibition of BRAF mutant melanomas triggers a series of cell state changes that lead to therapy resistance and escape from immune control before establishing acquired resistance genetically. We used genome-wide transcriptomics and single-cell phenotyping to explore the response kinetics to BRAF inhibition for a panel of patient-derived BRAFV600 -mutant melanoma cell lines. A subset of plastic cell lines, which followed a trajectory covering multiple known cell state transitions, provided models for more detailed biophysical investigations...
December 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29156488/association-of-pd-l1-expression-with-treatment-outcomes-in-patients-with-braf-mutation-positive-melanoma-treated-with-vemurafenib-or-cobimetinib-combined-with-vemurafenib
#6
Matthew J Wongchenko, Antoni Ribas, Brigitte Dréno, Paolo A Ascierto, Grant A McArthur, Jorge D Gallo, Isabelle A Rooney, Jessie Hsu, Hartmut Koeppen, Yibing Yan, James Larkin
The prognostic significance of programmed death ligand-1 (PD-L1) on treatment outcomes in patients receiving BRAF with or without MEK inhibitors is not well understood. This retrospective exploratory analysis evaluated the association of tumour PD-L1 expression with progression-free survival (PFS) and overall survival (OS) among 210 patients in the coBRIM trial treated with cobimetinib plus vemurafenib or placebo plus vemurafenib. In the vemurafenib cohort, there was a trend of increased PFS and OS in those with PD-L1(+) melanoma, with hazard ratios (HRs) (PD-L1(+) versus PD-L1(-) ) of 0...
November 20, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29076950/vemurafenib-treatment-for-patients-with-locally-advanced-unresectable-stage-iiic-or-metastatic-melanoma-and-activating-exon-15-braf-mutations-other-than-v600e
#7
Sigrun Hallmeyer, Rene Gonzalez, David H Lawson, Lee D Cranmer, Gerald P Linette, Igor Puzanov, Bret Taback, C Lance Cowey, Antoni Ribas, Gregory A Daniels, Timothy Moore, Geoffrey T Gibney, Hussein Tawbi, Eric Whitman, Geraldine Lee, Yong Mun, Shiyao Liu, Omid Hamid
BRAF mutations are found in ~50% of metastatic melanomas, most commonly in codon V600. Vemurafenib improves progression-free survival and overall survival in patients with advanced BRAF-mutated melanoma. The results of a descriptive study evaluating vemurafenib in patients with advanced melanoma harbouring BRAF mutations other than V600E are reported. Eligible patients with stage IIIC or IV melanoma and non-V600E BRAF mutations received vemurafenib (960 mg, twice daily). End points included investigator-assessed best overall response rate (primary), time to response, duration of response, progression-free survival, overall survival and safety...
December 2017: Melanoma Research
https://www.readbyqxmd.com/read/29058502/axicabtagene-ciloleucel-a-first-in-class-car-t-cell-therapy-for-aggressive-nhl
#8
Zachary J Roberts, Marc Better, Adrian Bot, Margo R Roberts, Antoni Ribas
The development of clinically functional chimeric antigen receptor (CAR) T cell therapy is the culmination of multiple advances over the last three decades. Axicabtagene ciloleucel (formerly KTE-C19) is an anti-CD19 CAR T cell therapy in development for patients with refractory diffuse large B cell lymphoma (DLBCL), including transformed follicular lymphoma (TFL) and primary mediastinal B cell lymphoma (PMBCL). Axicabtagene ciloleucel is manufactured from patients' own peripheral blood mononuclear cells (PBMC) during which T cells are engineered to express a CAR that redirects them to recognize CD19-expressing cells...
October 23, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28994212/high-frequency-of-brain-metastases-after-adjuvant-therapy-for-high-risk-melanoma
#9
Wolfram E Samlowski, James Moon, Merle Witter, Michael B Atkins, John M Kirkwood, Megan Othus, Antoni Ribas, Vernon K Sondak, Lawrence E Flaherty
The incidence of CNS progression in patients with high-risk regional melanoma (stages IIIAN2a-IIIC) is not well characterized. Data from the S0008 trial provided an opportunity to examine the role of CNS progression in treatment failure and survival. All patients were surgically staged. Following wide excision and full regional lymphadenectomy, patients were randomized to receive adjuvant biochemotherapy (BCT) or high-dose interferon alfa-2B (HDI). CNS progression was retrospectively identified from data forms...
November 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28961465/final-analysis-of-a-randomised-trial-comparing-pembrolizumab-versus-investigator-choice-chemotherapy-for-ipilimumab-refractory-advanced-melanoma
#10
Omid Hamid, Igor Puzanov, Reinhard Dummer, Jacob Schachter, Adil Daud, Dirk Schadendorf, Christian Blank, Lee D Cranmer, Caroline Robert, Anna C Pavlick, Rene Gonzalez, F Stephen Hodi, Paolo A Ascierto, April K S Salama, Kim A Margolin, Tara C Gangadhar, Ziwen Wei, Scot Ebbinghaus, Nageatte Ibrahim, Antoni Ribas
AIM: To evaluate the protocol-specified final analysis of overall survival (OS) in the KEYNOTE-002 study (NCT01704287) of pembrolizumab versus chemotherapy in patients with ipilimumab-refractory, advanced melanoma. METHODS: In this randomised, phase II study, eligible patients had advanced melanoma with documented progression after two or more ipilimumab doses, previous BRAF or MEK inhibitor or both, if BRAF(V600) mutant-positive. Patients were randomised to pembrolizumab 2 mg/kg or 10 mg/kg every 3 weeks or investigator-choice chemotherapy...
September 26, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28941311/endocrinopathies-with-use-of-cancer-immunotherapies
#11
Natalie M Villa, Abtin Farahmand, Lin Du, Michael W Yeh, Stephanie Smooke-Praw, Antoni Ribas, Bartosz Chmielowski, Grace Cherry, Angela M Leung
BACKGROUND: Immunomodulatory therapies, including CTLA-4 and PD-1 inhibitors, provide a directed attack against cancer cells by preventing T cell deactivation. However, these drugs also prevent the downregulation of auto-reactive T cells, resulting in immune-related adverse events (IRAEs). Reports show a varied incidence of endocrine IRAEs, ranging from 0% to 63%. OBJECTIVE: To describe the frequency and clinical characteristics of endocrine IRAEs in patients taking cancer immunomodulatory therapies...
September 23, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28886381/oncolytic-virotherapy-promotes-intratumoral-t-cell-infiltration-and-improves-anti-pd-1-immunotherapy
#12
Antoni Ribas, Reinhard Dummer, Igor Puzanov, Ari VanderWalde, Robert H I Andtbacka, Olivier Michielin, Anthony J Olszanski, Josep Malvehy, Jonathan Cebon, Eugenio Fernandez, John M Kirkwood, Thomas F Gajewski, Lisa Chen, Kevin S Gorski, Abraham A Anderson, Scott J Diede, Michael E Lassman, Jennifer Gansert, F Stephen Hodi, Georgina V Long
Here we report a phase 1b clinical trial testing the impact of oncolytic virotherapy with talimogene laherparepvec on cytotoxic T cell infiltration and therapeutic efficacy of the anti-PD-1 antibody pembrolizumab. Twenty-one patients with advanced melanoma were treated with talimogene laherparepvec followed by combination therapy with pembrolizumab. Therapy was generally well tolerated, with fatigue, fevers, and chills as the most common adverse events. No dose-limiting toxicities occurred. Confirmed objective response rate was 62%, with a complete response rate of 33% per immune-related response criteria...
September 7, 2017: Cell
https://www.readbyqxmd.com/read/28864476/recurrent-tumor-cell-intrinsic-and-extrinsic-alterations-during-mapki-induced-melanoma-regression-and-early-adaptation
#13
Chunying Song, Marco Piva, Lu Sun, Aayoung Hong, Gatien Moriceau, Xiangju Kong, Hong Zhang, Shirley Lomeli, Jin Qian, Clarissa C Yu, Robert Damoiseaux, Mark C Kelley, Kimberley B Dahlman, Philip O Scumpia, Jeffrey A Sosman, Douglas B Johnson, Antoni Ribas, Willy Hugo, Roger S Lo
Treatment of advanced BRAF(V600)-mutant melanoma using a BRAF inhibitor or its combination with a MEK inhibitor typically elicits partial responses. We compared the transcriptomes of patient-derived tumors regressing on MAPK inhibitor (MAPKi) therapy against MAPKi-induced temporal transcriptomic states in human melanoma cell lines or murine melanoma in immune-competent mice. Despite heterogeneous dynamics of clinical tumor regression, residual tumors displayed highly recurrent transcriptomic alterations and enriched processes, which were also observed in MAPKi-selected cell lines (implying tumor cell-intrinsic reprogramming) or in bulk mouse tumors (and the CD45-negative or CD45-positive fractions, implying tumor cell-intrinsic or stromal/immune alterations, respectively)...
September 1, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28822576/pembrolizumab-versus-ipilimumab-for-advanced-melanoma-final-overall-survival-results-of-a-multicentre-randomised-open-label-phase-3-study-keynote-006
#14
Jacob Schachter, Antoni Ribas, Georgina V Long, Ana Arance, Jean-Jacques Grob, Laurent Mortier, Adil Daud, Matteo S Carlino, Catriona McNeil, Michal Lotem, James Larkin, Paul Lorigan, Bart Neyns, Christian Blank, Teresa M Petrella, Omid Hamid, Honghong Zhou, Scot Ebbinghaus, Nageatte Ibrahim, Caroline Robert
BACKGROUND: Interim analyses of the phase 3 KEYNOTE-006 study showed superior overall and progression-free survival of pembrolizumab versus ipilimumab in patients with advanced melanoma. We present the final protocol-specified survival analysis. METHODS: In this multicentre, open-label, randomised, phase 3 trial, we recruited patients from 87 academic institutions, hospitals, and cancer centres in 16 countries (Australia, Austria, Belgium, Canada, Chile, Colombia, France, Germany, Israel, Netherlands, New Zealand, Norway, Spain, Sweden, UK, and USA)...
August 16, 2017: Lancet
https://www.readbyqxmd.com/read/28808226/atr-inhibition-facilitates-targeting-of-leukemia-dependence-on-convergent-nucleotide-biosynthetic-pathways
#15
Thuc M Le, Soumya Poddar, Joseph R Capri, Evan R Abt, Woosuk Kim, Liu Wei, Nhu T Uong, Chloe M Cheng, Daniel Braas, Mina Nikanjam, Peter Rix, Daria Merkurjev, Jesse Zaretsky, Harley I Kornblum, Antoni Ribas, Harvey R Herschman, Julian Whitelegge, Kym F Faull, Timothy R Donahue, Johannes Czernin, Caius G Radu
Leukemia cells rely on two nucleotide biosynthetic pathways, de novo and salvage, to produce dNTPs for DNA replication. Here, using metabolomic, proteomic, and phosphoproteomic approaches, we show that inhibition of the replication stress sensing kinase ataxia telangiectasia and Rad3-related protein (ATR) reduces the output of both de novo and salvage pathways by regulating the activity of their respective rate-limiting enzymes, ribonucleotide reductase (RNR) and deoxycytidine kinase (dCK), via distinct molecular mechanisms...
August 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/28756137/survival-of-patients-with-advanced-metastatic-melanoma-the-impact-of-novel-therapies-update-2017
#16
REVIEW
Selma Ugurel, Joachim Röhmel, Paolo A Ascierto, Keith T Flaherty, Jean Jacques Grob, Axel Hauschild, James Larkin, Georgina V Long, Paul Lorigan, Grant A McArthur, Antoni Ribas, Caroline Robert, Dirk Schadendorf, Claus Garbe
The treatment of metastatic melanoma is still undergoing a process of major change. The two most important novel therapeutic strategies, selective kinase inhibitors and immune checkpoint blockers, both significantly prolong survival times of patients with advanced metastatic disease. Different agents, dose regimens and combinations have been tested against each other vigorously within these two groups. However, results from prospective head-to-head comparative studies of both strategies are still lacking. We performed an exploratory analysis of survival data from selected clinical trials representative for the new treatment strategies in advanced metastatic melanoma...
September 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28738052/collaborative-care-in-melanoma-the-essential-role-of-the-nurse%C3%A2
#17
John M Kirkwood, Antoni Ribas
This article provides perspective from medical oncologists on the importance of this supplement from the Melanoma Nursing Initiative. The authors (a) delineate the challenges inherent in addressing adverse event (AE) management with newer melanoma therapies, particularly in the community setting; (b) illustrate how advanced practice providers with extensive clinical trial experience in melanoma are in a key position to set the agenda and educate colleagues on best practices in AE management; and
August 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28729151/standard-dose-pembrolizumab-in-combination-with-reduced-dose-ipilimumab-for-patients-with-advanced-melanoma-keynote-029-an-open-label-phase-1b-trial
#18
RANDOMIZED CONTROLLED TRIAL
Georgina V Long, Victoria Atkinson, Jonathan S Cebon, Michael B Jameson, Bernie M Fitzharris, Catriona M McNeil, Andrew G Hill, Antoni Ribas, Michael B Atkins, John A Thompson, Wen-Jen Hwu, F Stephen Hodi, Alexander M Menzies, Alexander D Guminski, Richard Kefford, Benjamin Y Kong, Babak Tamjid, Archana Srivastava, Anna J Lomax, Mohammed Islam, Xinxin Shu, Scot Ebbinghaus, Nageatte Ibrahim, Matteo S Carlino
BACKGROUND: Reduced-dose nivolumab in combination with standard-dose ipilimumab improves objective response and progression-free survival compared with standard-dose ipilimumab alone, but increases toxicity. We assessed the safety and anti-tumour activity of standard-dose pembrolizumab in combination with reduced-dose ipilimumab. METHODS: In this open-label, phase 1b trial, we recruited patients from 12 medical centres in Australia, New Zealand, and the USA. Eligible patients were aged at least 18 years, had advanced melanoma, had an Eastern Coooperative Oncology Group performance status of 0 or 1, had measurable disease according to the Response Evaluation Criteria in Solid Tumors (RECIST) version 1...
September 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28692921/exploring-the-relationship-between-non-suicidal-self-injury-and-borderline-personality-traits-in-young-adults
#19
Daniel Vega, Rafael Torrubia, Àngel Soto, Joan Ribas, Joaquim Soler, Juan Carlos Pascual, Antoni Rodríguez-Fornells, Josep Marco-Pallarés
Non-suicidal self-injury (NSSI) is highly prevalent during late adolescence and young adulthood. There is some evidence of a link between NSSI and Borderline Personality Disorder (BPD), but little is known about the association between BPD traits and the various functions that maintain NSSI. The main purpose of this study was to explore the association between borderline personality traits and NSSI functions in a sample of college students. We also compared NSSI functions in college students who engaged in NSSI to those in an age-matched sample of BPD patients...
July 4, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28652246/mapk-signaling-and-inflammation-link-melanoma-phenotype-switching-to-induction-of-cd73-during-immunotherapy
#20
Julia Reinhardt, Jennifer Landsberg, Jonathan L Schmid-Burgk, Bartomeu Bibiloni Ramis, Tobias Bald, Nicole Glodde, Dorys Lopez-Ramos, Arabella Young, Shin Foong Ngiow, Daniel Nettersheim, Hubert Schorle, Thomas Quast, Waldemar Kolanus, Dirk Schadendorf, Georgina V Long, Jason Madore, Richard A Scolyer, Antoni Ribas, Mark J Smyth, Paul C Tumeh, Thomas Tüting, Michael Hölzel
Evolution of tumor cell phenotypes promotes heterogeneity and therapy resistance. Here we found that induction of CD73, the enzyme that generates immunosuppressive adenosine, is linked to melanoma phenotype switching. Activating MAPK mutations and growth factors drove CD73 expression, which marked both nascent and full activation of a mesenchymal-like melanoma cell state program. Proinflammatory cytokines like TNFα cooperated with MAPK signaling through the c-Jun/AP-1 transcription factor complex to activate CD73 transcription by binding to an intronic enhancer...
September 1, 2017: Cancer Research
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