Abstracts tagged "Uric Acid, Urate"

Abstract Number: 1994 • ACR Convergence 2025
Pharmacokinetics of Ready-to-Use Pegloticase Formulation Compared to Standard Pegloticase Dosing: Data from the AGILE Study
Orrin Troum¹, John Botson², Afroz S. Mohammad³, Xiaoqing Yang⁴, Nathan Roe⁵, Supra Verma⁶ and Brian Lamoreaux⁷, ¹Providence Health Care/Doctor's of St John's (MDSJ) Santa Monica, CA, Santa Monica, CA, ²Orthopedic Physicians Alaska, Anchorage, AK, ³Amgen Inc, Deerfield, ⁴Amgen, Seattle, WA, ⁵Horizon Therapeutics, Boise, ID, ⁶Horizon Therapeutics, Newport Beach, CA, ⁷Amgen, Inc., Deerfield, IL
Background/Purpose: Pegloticase is approved for uncontrolled gout as 8-mg infusions admixed in 250 cc of normal saline over 120 minutes or more administered every 2…
Abstract Number: 1992 • ACR Convergence 2025
Tolerance of Methotrexate Coadministered with Pegloticase in Patients with Uncontrolled Gout: Findings from MIRROR RCT
Vinicius Domingues¹, Alexis Woods², Xiaoqing Yang³, Brian Lamoreaux⁴ and Michael Weinblatt⁵, ¹Rheumatology, Allergy, Asthma & Arthritis Center, Daytona beach, FL, ²Amgen, Detroit, MI, ³Amgen, Seattle, WA, ⁴Amgen, Inc., Deerfield, IL, ⁵Brigham and Women's Hospital/ Harvard Medical School, Waban, MA
Background/Purpose: Methotrexate (MTX) coadministered with pegloticase attenuates anti-drug antibody formation, leading to higher response rates and markedly reduced infusion reaction risk compared with pegloticase +…
Abstract Number: 1990 • ACR Convergence 2025
Pilot Study: Testing the Accuracy of a Capillary Point-of-Care Device Compared to Traditional Venous Analysis for Serum Urate Measurements Among Patients with Gout
Alex Tinianow¹, Saiajay Chigurupati¹, Ethan Carey¹, Jiaqi Wang², Sharan Rai³, Gregory Challener⁴, Hyon K. Choi⁵, Philip Riches⁶, Natalie McCormick¹ and Chio Yokose⁷, ¹Massachusetts General Hospital, Boston, MA, ²Massachusetts General Hospital, BOston, ³Massachusetts General Hospital/Harvard Medical School, Boston, MA, ⁴MGH, Boston, MA, ⁵MASSACHUSETTS GENERAL HOSPITAL, Lexington, MA, ⁶NHS Lothian, Edinburgh, UK, Edinburgh, United Kingdom, ⁷Massachusetts General Hospital, Waltham, MA
Background/Purpose: Rheumatology guidelines endorse a treat-to-target (TTT) approach targeting serum urate (SU) < 6 mg/dL among patients with gout who qualify for urate-lowering therapy (ULT).…
Abstract Number: 1991 • ACR Convergence 2025
Co-Use of Mycophenolate Mofetil with Pegloticase Yielded Similar Clinical Outcomes as the Co-Use of Methotrexate
Tingting Zhang¹, Kenneth Saag², Yasir Qazi³, Bradley Marder⁴ and Brian Lamoreaux⁵, ¹Amgen, Inc., Thousand Oaks, ²The University of Alabama at Birmingham, Birmingham, AL, ³Keck School of Medicine Renal Transplant Program, University of Southern California, Los Angeles, CA, ⁴AMGEN, Inc, Denver, CO, ⁵Amgen, Inc., Deerfield, IL
Background/Purpose: Pegloticase significantly reduces serum uric acid (sUA) values in patients with refractory gout. Co-use of methotrexate (MTX) improves efficacy and safety of pegloticase by…
Abstract Number: 1923 • ACR Convergence 2025
A Real-World Survey On Physicians’ Perspectives Of Uncontrolled Gout And Gout Management Practices.
John Botson¹, Menaka Bhor², Nathan Meyer², Molly Edwards³, Emily Goddard³, Victoria Barton⁴ and Jeff Peterson⁵, ¹Orthopedic Physicians of Alaska, Anchorage, AK, ²Sobi Inc, Waltham, MA, ³Adelphi Real World, Bollington, United Kingdom, ⁴Adelphi Real World, Macclesfield, United Kingdom, ⁵Western Washington Arthritis Clinic, Bothell, WA
Background/Purpose: Managing uncontrolled gout (UG) can involve a multi-disciplinary approach involving physicians of different specialities, all of whom may have differing perspectives or approaches for…
Abstract Number: L05 • ACR Convergence 2024
Prolonged Plasma Urate-Lowering After a Single Intravenous Administration of PRX-115, a Novel PEGylated Uricase, in Participants with Elevated Urate Levels
Christian Schwabe¹, Orit Cohen Barak², Alexandra Cole³, Hadar Reuveni², Liron Shelev², Liora Blinder-Haddad² and Nicola Dalbeth⁴, ¹NZCR, Auckland, New Zealand, ²Protalix Ltd, Karmiel, Israel, ³NZCR, Christchurch, New Zealand, ⁴University of Auckland, Auckland, New Zealand
Background/Purpose: PEGylated uricases have already demonstrated therapeutic modality in the treatment of refractory gout patients. PRX-115 is a recombinant homotetrameric uricase enzyme, produced from Candida…
Abstract Number: 0279 • ACR Convergence 2024
Macrophage Intracellular Fates of Monosodium Urate and Calcium Pyrophosphate Crystals: Phagocytosis, Exchanged/expulsion and Dissolution of Crystals
Charles Leroy¹, Nghia Pham², François Brial³, Brenda Kischkel⁴, gwénaêlle Jayat⁵, Elena Ishow⁶, Christèle Combes⁷, Leo Joosten⁴, Augustin Latourte⁸, Pascal Richette⁹ and Hang-Korng Ea¹⁰, ¹Inserm 1132 / Université Paris Cité, levallois-perret, France, ²INSERM 1132, BIOSCAR, Lariboisière hospital, Paris, France, ³Inserm 1132/ Université Paris Cité, Paris, France, ⁴Radboudumc, Nijmegen, Netherlands, ⁵Université Paris cité / Inserm 1132, paris, France, ⁶Université de Nantes / Ceisam, Nantes, France, ⁷INP-ENSIACET, Toulouse, France, ⁸AP-HP, Paris, France, ⁹Lariboisière Hospital, Paris, France, ¹⁰Université Paris Cité, INSERM UMR 1132 BIOSCAR, Paris, France
Background/Purpose: Gout, due to the presence of monosodium urate crystals (MSU) and calcium pyrophosphate (CPP) crystal deposition disease are both responsible for recurrent inflammation flares.…
Abstract Number: 2023 • ACR Convergence 2024
A PEGylated Mammalian Uricase Suitable for Intramuscular Administration to Patients with Refractory Chronic Gout
Frank Fan¹, Riyong Liu¹ and Yu Wang², ¹Chongqing PegBio Biopharm Co.,Ltd., Chongqing, China (People's Republic), ²Hangzhou Grand Biologic Pharmaceutical, Inc., Hangzhou, China (People's Republic)
Background/Purpose: For patients with refractory chronic gout, i.e., those who have frequent gout flares and/or persistent tophi despite treatment with the highest tolerable doses of…
Abstract Number: 0280 • ACR Convergence 2024
Trends in Management and Consultations for Gout: A Study of 18 Million Adults Using the OpenSAFELY Platform
Mark Russell¹, Jon Massey², Edward Roddy³, Brian MacKenna⁴, Seb Bacon⁴, Ben Goldacre⁴, Colm Andrews⁴, George Hickman⁴, Amir Mehrkar², Arti Mahto⁵, Andrew Rutherford⁶, Samir Patel¹, Maryam Adas⁷, Edward Alveyn⁷, deepak Nagra¹, Katie Bechman⁷, Joanna Ledingham⁸, Joanna Hudson⁹, Sam Norton¹, Andrew Cope⁷ and James Galloway¹⁰, ¹King's College London, London, England, United Kingdom, ²University of Oxford, Oxford, England, United Kingdom, ³Keele University, Keele, England, United Kingdom, ⁴University of Oxford, Oxford, United Kingdom, ⁵King's College Hospital NHS Foundation Trust, London, United Kingdom, ⁶King's College Hospital NHS Foundation Trust, London, England, United Kingdom, ⁷King's College London, London, United Kingdom, ⁸Portsmouth Hospitals University NHS Trust, Portsmouth, United Kingdom, ⁹King's College London, King's College London, United Kingdom, ¹⁰Centre for Rheumatic Diseases, King's College London, London, United Kingdom
Background/Purpose: Data from before the COVID-19 pandemic had shown persistently poor care for people with gout in many countries worldwide. Whether this was further exacerbated…
Abstract Number: 2127 • ACR Convergence 2024
Relationship Between Serum Uric Acid and Trabecular Bone Score (TBS) in Healthy Population
Isabella Silvestre Ignarro¹, Gabriela Tieme Ochikubo², Liliam Takayama³, Valeria de falco Caparbo², Camille Pinto Figueiredo², Marcos Rafael Nogueira Cavalcanti¹, Angelita Gomes De Souza¹, Isabela Judith Martins Bensenor¹, Ricardo Fuller¹ and Diogo Domiciano⁴, ¹Bone Metabolism Laboratory, Division of Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil, ²Bone Metabolism Laboratory, Division of Rheumatology, Faculdade de Medicina, Universidade de São Paulo, Sao Paulo, Brazil, São Paulo, SP, Brazil, ³Division of Rheumatology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, São Paulo, SP, Brazil, ⁴Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil, São Paulo, SP, Brazil
Background/Purpose: Serum uric acid (UA) has been postulated to play a role against bone loss due to antioxidant mechanisms. Some studies have shown association between…
Abstract Number: 0907 • ACR Convergence 2024
Association of Rare and Common Genetic Variants in MOCOS with Inadequate Response to Allopurinol
Niamh Fanning¹, Murray Cadzow², Ruth Topless³, Chris Frampton⁴, Nicola Dalbeth⁵, Tony Merriman⁶ and Lisa Stamp⁴, ¹University of Otago, Christchurch, New Zealand, ²University of Otago, Dunedin 9054, New Zealand, ³University of Otago, Dunedin, New Zealand, ⁴University of Otago, Christchurch, Christchurch, New Zealand, ⁵University of Auckland, Auckland, New Zealand, ⁶University of Alabama at Birmingham, Homewood, AL
Background/Purpose: The minor allele of the common rs2231142 (Q141K) ABCG2 variant predicts inadequate response to allopurinol urate lowering therapy (ULT). We hypothesize that additional variants in genes…
Abstract Number: 2560 • ACR Convergence 2024
Continuous Reduction in Ultrasound Detected Crystal Depositions over 5 Years Follow-up: Results from the NOR-Gout Study
Hilde B Hammer¹, Lars F Karoliussen¹, Lene Terslev², Espen A. Haavardsholm³ and Tillmann Uhlig¹, ¹Diakonhjemmet hospital, Oslo, Norway, ²Rigshospitalet-Glostrup & COPECARE, Glostrup, Denmark, ³Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway, and University of Oslo (UiO), Institute of Clinical Medicine, Oslo, Norway, Oslo, Norway
Background/Purpose: Ultrasound (US) is sensitive for detecting monosodium urate (MSU) crystal depositions in gout, described as double contour (DC), tophi and aggregates. Depositions decreased during…
Abstract Number: 1085 • ACR Convergence 2024
Pharmacokinetics and Pharmacodynamics of Tigulixostat in Participants with Mild, Moderate, and Severe Renal Impairment
Ashish Kumar¹, Ali Hariri¹, Yunjung Lee² and Minhyung Lee², ¹LG Chem Life Sciences USA, Boston, MA, ²LG Chem, Seoul, Republic of Korea
Background/Purpose: Tigulixostat is a potent and highly selective non-purine based xanthine oxidase inhibitor (XOi) being investigated for the management of hyperuricemia in patients with gout.…
Abstract Number: 1090 • ACR Convergence 2024
Hepatic Fibrosis Before and During Intensive Urate-lowering with Pegloticase in the Presence and Absence of Methotrexate Co-therapy
Naomi Schlesinger¹, Katie Obermeyer², Lissa Padnick-Silver², Brian LaMoreaux³ and Peter Lipsky⁴, ¹University of Utah, Salt Lake City, UT, ²Amgen, Inc., Thousand Oaks, CA, ³Amgen, Inc., Deerfield, IL, ⁴AMPEL BioSolutions, Charlottesville, VA
Background/Purpose: Gout is associated with non-alcoholic fatty liver disease (NAFLD),1 with elevated serum urate (SU) and high flare frequency (≥3 flares/yr) contributing.2 The Fib-4 index, calculated from…
Abstract Number: 1091 • ACR Convergence 2024
Mapping Monosodium Urate Crystal Deposition Within Joints in Tophaceous Gout: A Dual Energy CT Study
Chamaya De Silva¹, César Díaz², Gregory Gamble³, Anne Horne³, Anthony Doyle³, Lisa Stamp⁴ and Nicola Dalbeth³, ¹Health NZ Waitemata, Auckland, New Zealand, ²Hospital de la Santa Creu i Sant Pau, Barcelona, Spain, ³University of Auckland, Auckland, New Zealand, ⁴University of Otago, Christchurch, Christchurch, New Zealand
Background/Purpose: In gout, monosodium urate (MSU) crystal deposition occurs preferentially at certain joints, most frequently the first metatarsophalangeal (MTP) joint. Dual energy CT (DECT) allows…

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