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Rucaparib

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https://www.readbyqxmd.com/read/28264872/a-phase-i-ii-study-of-the-oral-poly-adp-ribose-polymerase-inhibitor-rucaparib-in-patients-with-germline-brca1-2-mutated-ovarian-carcinoma-or-other-solid-tumors
#1
Rebecca Kristeleit, Geoffrey I Shapiro, Howard A Burris, Amit M Oza, Patricia M LoRusso, Manish Patel, Susan M Domchek, Judith Balmaña, Yvette Drew, Lee-May Chen, Tamar Safra, Ana Montes, Heidi Giordano, Lara Maloney, Sandra Goble, Jeff Isaacson, Jim Xiao, Jen Borrow, Lindsey Rolfe, Ronnie Shapira-Frommer
PURPOSE: Rucaparib is a potent, oral, small-molecule poly(ADP-ribose) polymerase inhibitor. This phase I-II study was the first to evaluate single-agent oral rucaparib at multiple doses. EXPERIMENTAL DESIGN: Part 1 (phase I) sought to determine the maximum tolerated dose (MTD), recommended phase II dose (RP2D), and pharmacokinetics of oral rucaparib administered in 21-day continuous cycles in patients with advanced solid tumors. Part 2A (phase II) enrolled patients with platinum-sensitive, high-grade ovarian carcinoma (HGOC) associated with a germline BRCA1/2 mutation who received two to four prior regimens and had a progression-free interval of 6 months or more following their most recent platinum therapy...
March 6, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28250698/pharmaceutical-approval-update
#2
Mary Choy
Insulin degludec/liraglutide (Xultophy 100/3.6) for type-2 diabetes; rucaparib (Rubraca) for the treatment of deleterious BRCA mutation-associated ovarian cancer; and nusinersen (Spinraza) for the treatment of spinal muscular atrophy.
March 2017: P & T: a Peer-reviewed Journal for Formulary Management
https://www.readbyqxmd.com/read/28247266/rucaparib-first-global-approval
#3
Yahiya Y Syed
Rucaparib (Rubraca™) is an oral, small molecule, poly (ADP-ribose) polymerase inhibitor being developed by Clovis Oncology, Inc. (Boulder, CO, USA) for the treatment of solid tumours. It has been approved in the USA as monotherapy for the treatment of patients with deleterious BRCA mutation (germline and/or somatic) associated advanced ovarian cancer who have been treated with two or more chemotherapies. A marketing authorization application for rucaparib for the same indication has been submitted to the European Medicines Agency...
March 1, 2017: Drugs
https://www.readbyqxmd.com/read/28222073/a-phase-i-study-of-intravenous-and-oral-rucaparib-in-combination-with-chemotherapy-in-patients-with-advanced-solid-tumours
#4
Richard H Wilson, Tr Jeffry Evans, Mark R Middleton, L Rhoda Molife, James Spicer, Veronique Dieras, Patricia Roxburgh, Heidi Giordano, Sarah Jaw-Tsai, Sandra Goble, Ruth Plummer
BACKGROUND: This study evaluated safety, pharmacokinetics, and clinical activity of intravenous and oral rucaparib, a poly(ADP-ribose) polymerase inhibitor, combined with chemotherapy in patients with advanced solid tumours. METHODS: Initially, patients received escalating doses of intravenous rucaparib combined with carboplatin, carboplatin/paclitaxel, cisplatin/pemetrexed, or epirubicin/cyclophosphamide. Subsequently, the study was amended to focus on oral rucaparib (once daily, days 1-14) combined with carboplatin (day 1) in 21-day cycles...
February 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28205191/novel-and-expanded-oncology-drug-approvals-of-2016-part-1-new-options-in-solid-tumor-management
#5
REVIEW
Todd C Knepper, James Saller, Christine M Walko
The nonradiologic medical management of solid tumors has evolved from the use of traditional cytotoxic agents to modern targeted therapies, monoclonal antibodies, and immunotherapies. Advances in the understanding of cancer biology and therapeutic strategies have resulted in increasing numbers of new drug applications and approvals. Consequently, practicing oncologists need to learn how the newly available agents function and what toxicities to watch for, as well as ways to optimize the use of both new drugs and previously approved drugs with new indications...
February 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28069724/synthetic-lethality-exploitation-by-an-anti-trop-2-sn-38-antibody-drug-conjugate-immu-132-plus-parp-inhibitors-in-brca1-2-wild-type-triple-negative-breast-cancer
#6
Thomas M Cardillo, Robert M Sharkey, Diane L Rossi, Roberto Arrojo, Ali Mostafa, David M Goldenberg
PURPOSE: Both Poly(ADP-ribose) polymerase inhibitors (PARPi) and sacituzumab govitecan (IMMU-132) are currently under clinical evaluation in triple-negative breast cancer (TNBC). We sought to investigate the combined DNA-damaging effects of the topoisomerase I (Topo I)-inhibitory activity of IMMU-132 with PARPi disruption of DNA repair in TNBC. EXPERIMENTAL DESIGN: In vitro, human TNBC cell lines were incubated with IMMU-132 and various PARPi (olaparib, rucaparib, or talazoparib) to determine the effect on growth, double-stranded DNA (dsDNA) breaks, and cell-cycle arrest...
January 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28057616/rucaparib-approved-for-ovarian-cancer
#7
(no author information available yet)
The FDA approved the PARP inhibitor rucaparib to treat women with advanced ovarian cancer who have already been treated with at least two chemotherapies and have a BRCA1 or BRCA2 gene mutation identified by an approved companion diagnostic test. The agency also gave a nod to the FoundationFocus CDxBRCA test to detect BRCA alterations.
January 5, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28001384/structural-basis-for-potency-and-promiscuity-in-poly-adp-ribose-polymerase-parp-and-tankyrase-inhibitors
#8
Ann-Gerd Thorsell, Torun Ekblad, Tobias Karlberg, Mirjam Löw, Ana Filipa Pinto, Lionel Trésaugues, Martin Moche, Michael S Cohen, Herwig Schüler
Selective inhibitors could help unveil the mechanisms by which inhibition of poly(ADP-ribose) polymerases (PARPs) elicits clinical benefits in cancer therapy. We profiled 10 clinical PARP inhibitors and commonly used research tools for their inhibition of multiple PARP enzymes. We also determined crystal structures of these compounds bound to PARP1 or PARP2. Veliparib and niraparib are selective inhibitors of PARP1 and PARP2; olaparib, rucaparib, and talazoparib are more potent inhibitors of PARP1 but are less selective...
February 23, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27940438/genomic-loh-may-predict-rucaparib-response-in-ovarian-cancer
#9
(no author information available yet)
High LOH is associated with response to the PARP inhibitor rucaparib in BRCA wild-type ovarian cancer.
January 2017: Cancer Discovery
https://www.readbyqxmd.com/read/27908594/rucaparib-in-relapsed-platinum-sensitive-high-grade-ovarian-carcinoma-ariel2-part-1-an-international-multicentre-open-label-phase-2-trial
#10
Elizabeth M Swisher, Kevin K Lin, Amit M Oza, Clare L Scott, Heidi Giordano, James Sun, Gottfried E Konecny, Robert L Coleman, Anna V Tinker, David M O'Malley, Rebecca S Kristeleit, Ling Ma, Katherine M Bell-McGuinn, James D Brenton, Janiel M Cragun, Ana Oaknin, Isabelle Ray-Coquard, Maria I Harrell, Elaina Mann, Scott H Kaufmann, Anne Floquet, Alexandra Leary, Thomas C Harding, Sandra Goble, Lara Maloney, Jeff Isaacson, Andrew R Allen, Lindsey Rolfe, Roman Yelensky, Mitch Raponi, Iain A McNeish
BACKGROUND: Poly(ADP-ribose) polymerase (PARP) inhibitors have activity in ovarian carcinomas with homologous recombination deficiency. Along with BRCA1 and BRCA2 (BRCA) mutations genomic loss of heterozygosity (LOH) might also represent homologous recombination deficiency. In ARIEL2, we assessed the ability of tumour genomic LOH, quantified with a next-generation sequencing assay, to predict response to rucaparib, an oral PARP inhibitor. METHODS: ARIEL2 is an international, multicentre, two-part, phase 2, open-label study done at 49 hospitals and cancer centres in Australia, Canada, France, Spain, the UK, and the USA...
January 2017: Lancet Oncology
https://www.readbyqxmd.com/read/27866910/proteome-wide-profiling-of-clinical-parp-inhibitors-reveals-compound-specific-secondary-targets
#11
Claire E Knezevic, Gabriela Wright, Lily L Remsing Rix, Woosuk Kim, Brent M Kuenzi, Yunting Luo, January M Watters, John M Koomen, Eric B Haura, Alvaro N Monteiro, Caius Radu, Harshani R Lawrence, Uwe Rix
Poly(ADP-ribose) polymerase (PARP) inhibitors (PARPi) are a promising class of targeted cancer drugs, but their individual target profiles beyond the PARP family, which could result in differential clinical use or toxicity, are unknown. Using an unbiased, mass spectrometry-based chemical proteomics approach, we generated a comparative proteome-wide target map of the four clinical PARPi, olaparib, veliparib, niraparib, and rucaparib. PARPi as a class displayed high target selectivity. However, in addition to the canonical targets PARP1, PARP2, and several of their binding partners, we also identified hexose-6-phosphate dehydrogenase (H6PD) and deoxycytidine kinase (DCK) as previously unrecognized targets of rucaparib and niraparib, respectively...
December 22, 2016: Cell Chemical Biology
https://www.readbyqxmd.com/read/27716873/the-current-status-of-parp-inhibitors-in-ovarian-cancer
#12
REVIEW
Jennifer McLachlan, Angela George, Susana Banerjee
Recent advances in our understanding of the molecular biology of epithelial ovarian cancer have led to the development of a number of targeted therapies, including poly-ADP-ribose polymerase (PARP) inhibitors. PARP inhibitors are a novel class of therapeutic agents that target tumors with deficiencies in the homologous recombination DNA repair pathway. Early studies have shown significant efficacy for PARP inhibitors in patients with germline BRCA1/2 mutations. It has become evident that BRCA wild-type patients with other defects in the homologous recombination repair pathway benefit from this therapeutic approach...
October 13, 2016: Tumori
https://www.readbyqxmd.com/read/27702817/ovarian-cancers-harbor-defects-in-nonhomologous-end-joining-resulting-in-resistance-to-rucaparib
#13
Aiste McCormick, Peter Donoghue, Michelle Dixon, Richard O'Sullivan, Rachel L O'Donnell, James Murray, Angelika Kaufmann, Nicola J Curtin, Richard J Edmondson
PURPOSE: DNA damage defects are common in ovarian cancer and can be used to stratify treatment. Although most work has focused on homologous recombination (HR), DNA double-strand breaks are repaired primarily by nonhomologous end joining (NHEJ). Defects in NHEJ have been shown to contribute to genomic instability and have been associated with the development of chemoresistance. EXPERIMENTAL DESIGN: NHEJ was assessed in a panel of ovarian cancer cell lines and 47 primary ascetic-derived ovarian cancer cultures, by measuring the ability of cell extracts to end-join linearized plasmid monomers into multimers...
October 4, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27600766/evaluation-of-the-radiosensitizing-potency-of-chemotherapeutic-agents-in-prostate-cancer-cells
#14
Colin Rae, Robert J Mairs
PURPOSE: Despite recent advances in the treatment of metastatic prostate cancer, survival rates are low and treatment options are limited to chemotherapy and hormonal therapy. Although ionizing radiation is used to treat localized and metastatic prostate cancer, the most efficient use of radiotherapy is yet to be defined. Our purpose was to determine in vitro the potential benefit to be gained by combining radiation treatment with cytotoxic drugs. MATERIALS AND METHODS: Inhibitors of DNA repair and heat shock protein 90 and an inducer of oxidative stress were evaluated in combination with X-radiation for their capacity to reduce clonogenic survival and delay the growth of multicellular tumor spheroids...
October 3, 2016: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/27530326/crispr-cas9-mediated-trp53-and-brca2-knockout-to-generate-improved-murine-models-of-ovarian-high-grade-serous-carcinoma
#15
Josephine Walton, Julianna Blagih, Darren Ennis, Elaine Leung, Suzanne Dowson, Malcolm Farquharson, Laura A Tookman, Clare Orange, Dimitris Athineos, Susan Mason, David Stevenson, Karen Blyth, Douglas Strathdee, Frances R Balkwill, Karen Vousden, Michelle Lockley, Iain A McNeish
There is a need for transplantable murine models of ovarian high-grade serous carcinoma (HGSC) with regard to mutations in the human disease to assist investigations of the relationships between tumor genotype, chemotherapy response, and immune microenvironment. In addressing this need, we performed whole-exome sequencing of ID8, the most widely used transplantable model of ovarian cancer, covering 194,000 exomes at a mean depth of 400× with 90% exons sequenced >50×. We found no functional mutations in genes characteristic of HGSC (Trp53, Brca1, Brca2, Nf1, and Rb1), and p53 remained transcriptionally active...
October 15, 2016: Cancer Research
https://www.readbyqxmd.com/read/27515310/an-evaluation-in-vitro-of-parp-1-inhibitors-rucaparib-and-olaparib-as-radiosensitisers-for-the-treatment-of-neuroblastoma
#16
Donna L Nile, Colin Rae, Iain J Hyndman, Mark N Gaze, Robert J Mairs
BACKGROUND: The radiopharmaceutical (131)I-meta-iodobenzylguanidine ((131)I-MIBG) is an effective treatment for neuroblastoma. However, maximal therapeutic benefit from (131)I-MIBG is likely to be obtained by its combination with chemotherapy. We previously reported enhanced antitumour efficacy of (131)I-MIBG by inhibition of the poly(ADP-ribose) polymerase-1 (PARP-1) DNA repair pathway using the phenanthridinone derivative PJ34. Recently developed alternative PARP-1 inhibitors have greater target specificity and are expected to be associated with reduced toxicity to normal tissue...
August 11, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27440269/parp-inhibitor-activity-correlates-with-slfn11-expression-and-demonstrates-synergy-with-temozolomide-in-small-cell-lung-cancer
#17
Benjamin H Lok, Eric E Gardner, Valentina E Schneeberger, Andy Ni, Patrice Desmeules, Natasha Rekhtman, Elisa de Stanchina, Beverly A Teicher, Nadeem Riaz, Simon N Powell, John T Poirier, Charles M Rudin
PURPOSE: PARP inhibitors (PARPi) are a novel class of small molecule therapeutics for small cell lung cancer (SCLC). Identification of predictors of response would advance our understanding, and guide clinical application, of this therapeutic strategy. EXPERIMENTAL DESIGN: Efficacy of PARP inhibitors olaparib, rucaparib, and veliparib, as well as etoposide and cisplatin in SCLC cell lines, and gene expression correlates, was analyzed using public datasets. HRD genomic scar scores were calculated from Affymetrix SNP 6...
January 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27415012/abcb1-mdr1-induction-defines-a-common-resistance-mechanism-in-paclitaxel-and-olaparib-resistant-ovarian-cancer-cells
#18
Aparajitha Vaidyanathan, Lynne Sawers, Anne-Louise Gannon, Probir Chakravarty, Alison L Scott, Susan E Bray, Michelle J Ferguson, Gillian Smith
BACKGROUND: Clinical response to chemotherapy for ovarian cancer is frequently compromised by the development of drug-resistant disease. The underlying molecular mechanisms and implications for prescription of routinely prescribed chemotherapy drugs are poorly understood. METHODS: We created novel A2780-derived ovarian cancer cell lines resistant to paclitaxel and olaparib following continuous incremental drug selection. MTT assays were used to assess chemosensitivity to paclitaxel and olaparib in drug-sensitive and drug-resistant cells±the ABCB1 inhibitors verapamil and elacridar and cross-resistance to cisplatin, carboplatin, doxorubicin, rucaparib, veliparib and AZD2461...
August 9, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27327149/advanced-ovarian-cancer-displays-functional-intratumor-heterogeneity-that-correlates-to-ex-vivo-drug-sensitivity
#19
Rachel L O'Donnell, Angelika Kaufmann, Laura Woodhouse, Aiste McCormick, Paul A Cross, Richard J Edmondson, Nicola J Curtin
INTRODUCTION: Epithelial ovarian cancer is recognized to be heterogeneous but is currently treated with a single treatment strategy. Successful patient stratification of emerging chemotherapy agents is dependent upon the availability of reliable biomarkers indicative of the entire tumor. AIM: The aim of this study was to evaluate intertumor and intratumor heterogeneity within a series of epithelial ovarian cancer using homologous recombination (HR) DNA repair status...
July 2016: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27251881/linker-design-for-the-modular-assembly-of-multifunctional-and-targeted-platinum-ii-containing-anticancer-agents
#20
S Ding, U Bierbach
A versatile and efficient modular synthetic platform was developed for assembling multifunctional conjugates and targeted forms of platinum-(benz)acridines, a class of highly cytotoxic DNA-targeted hybrid agents. The synthetic strategy involved amide coupling between succinyl ester-modified platinum compounds (P1, P2) and a set of 11 biologically relevant primary and secondary amines (N1-N11). To demonstrate the feasibility and versatility of the approach, a structurally and functionally diverse range of amines was introduced...
August 16, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
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