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Copaescu AM, James F, Vogrin S, Rose M, Chua K, Holmes NE, Turner NA, Stone C, Phillips E, Trubiano J. Use of a penicillin allergy clinical decision rule to enable direct oral penicillin provocation: an international multicentre randomised control trial in an adult population (PALACE): study protocol. BMJ Open 2022; 12:e063784. [PMID: 35940831 PMCID: PMC9364402 DOI: 10.1136/bmjopen-2022-063784] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Penicillin allergies are highly prevalent in the healthcare setting and associated with the prescription of second-line inferior antibiotics. More than 85% of all penicillin allergy labels can be removed by skin testing and 96%-99% of low-risk penicillin allergy labels can be removed by direct oral challenge. An internally and externally validated clinical assessment tool for penicillin allergy, PEN-FAST, can identify a low-risk penicillin allergy without the need for skin testing; a score of less than 3 has a negative predictive value of 96.3% (95% CI, 94.1 to 97.8) for the presence of a penicillin allergy. It is hypothesised that PEN-FAST is a safe and effective tool for assessing penicillin allergy in an outpatient clinic setting. METHODS AND ANALYSIS This is an international, multicentre randomised control trial using the PEN-FAST tool to risk-stratify penicillin allergy labels in adult outpatients. The study's primary objective is to evaluate the non-inferiority of using PEN-FAST score-guided management with direct oral challenge compared with standard care (defined as prick and intradermal skin testing followed by oral penicillin challenge). Participants will be randomised 1:1 to the intervention arm (direct oral penicillin challenge) or standard of care arm (skin testing followed by oral penicillin challenge, if skin testing is negative). The sample size of 380 randomised patients (190 per treatment arm) is required to demonstrate non-inferiority. ETHICS AND DISSEMINATION The study will be performed according to the guidelines of the Helsinki Declaration and is approved by the Austin Health Human Research Ethics Committee (HREC/62425/Austin-2020) in Melbourne Australia, Vanderbilt University Institutional Review Board (IRB #202174) in Tennessee, USA, Duke University Institutional Review Board (IRB #Pro00108461) in North Carolina, USA and McGill University Health Centre Research Ethics Board in Canada (PALACE/2022-7605). The results of this study will be published and presented in various scientific forums. TRIAL REGISTRATION NUMBER NCT04454229.
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Affiliation(s)
- Ana-Maria Copaescu
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia
- Department of Medicine, Division of Allergy and Clinical Immunology, McGill University Health Centre (MUHC), Montreal, Quebec, Canada
- The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Fiona James
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia
| | - Sara Vogrin
- Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, Victoria, Australia
| | - Morgan Rose
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia
- Department of Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
| | - Kyra Chua
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia
| | - Natasha E Holmes
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia
- Department of Critical Care, Melbourne Medical School, The University of Melbourne, Parkville, Victoria, Australia
| | - Nicholas A Turner
- Department of Infectious Diseases, Duke University Medical Center, Durham, Carolina, USA
| | - Cosby Stone
- Department of Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Elizabeth Phillips
- Department of Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - Jason Trubiano
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia
- Department of Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
- The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
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Almeida-Brasil CC, Hanly JG, Urowitz M, Clarke AE, Ruiz-Irastorza G, Gordon C, Ramsey-Goldman R, Petri M, Ginzler EM, Wallace DJ, Bae SC, Romero-Diaz J, Dooley MA, Peschken C, Isenberg D, Rahman A, Manzi S, Jacobsen S, Lim S, van Vollenhoven RF, Nived O, Jönsen A, Kamen DL, Aranow C, Sanchez-Guerrero J, Gladman DD, Fortin PR, Alarcón GS, Merrill JT, Kalunian K, Ramos-Casals M, Steinsson K, Zoma A, Askanase A, Khamashta MA, Bruce IN, Inanc M, Abrahamowicz M, Bernatsky S. Flares after hydroxychloroquine reduction or discontinuation: results from the Systemic Lupus International Collaborating Clinics (SLICC) inception cohort. Ann Rheum Dis 2022; 81:370-378. [PMID: 34911705 PMCID: PMC8862090 DOI: 10.1136/annrheumdis-2021-221295] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 11/10/2021] [Indexed: 12/21/2022]
Abstract
OBJECTIVES To evaluate systemic lupus erythematosus (SLE) flares following hydroxychloroquine (HCQ) reduction or discontinuation versus HCQ maintenance. METHODS We analysed prospective data from the Systemic Lupus International Collaborating Clinics (SLICC) cohort, enrolled from 33 sites within 15 months of SLE diagnosis and followed annually (1999-2019). We evaluated person-time contributed while on the initial HCQ dose ('maintenance'), comparing this with person-time contributed after a first dose reduction, and after a first HCQ discontinuation. We estimated time to first flare, defined as either subsequent need for therapy augmentation, increase of ≥4 points in the SLE Disease Activity Index-2000, or hospitalisation for SLE. We estimated adjusted HRs (aHRs) with 95% CIs associated with reducing/discontinuing HCQ (vs maintenance). We also conducted separate multivariable hazard regressions in each HCQ subcohort to identify factors associated with flare. RESULTS We studied 1460 (90% female) patients initiating HCQ. aHRs for first SLE flare were 1.20 (95% CI 1.04 to 1.38) and 1.56 (95% CI 1.31 to 1.86) for the HCQ reduction and discontinuation groups, respectively, versus HCQ maintenance. Patients with low educational level were at particular risk of flaring after HCQ discontinuation (aHR 1.43, 95% CI 1.09 to 1.87). Prednisone use at time-zero was associated with over 1.5-fold increase in flare risk in all HCQ subcohorts. CONCLUSIONS SLE flare risk was higher after HCQ taper/discontinuation versus HCQ maintenance. Decisions to maintain, reduce or stop HCQ may affect specific subgroups differently, including those on prednisone and/or with low education. Further study of special groups (eg, seniors) may be helpful.
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Affiliation(s)
- Celline C Almeida-Brasil
- Division of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - John G Hanly
- Division of Rheumatology, Department of Medicine and Department of Pathology, Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada
| | - Murray Urowitz
- Center for Prognosis Studies in the Rheumatic Diseases, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Ann Elaine Clarke
- Divisions of Clinical Immunology/Allergy and Clinical Epidemiology, University of Calgary, Calgary, Alberta, Canada
| | | | - Caroline Gordon
- Rheumatology Research Group, University of Birmingham, Birmingham, UK
| | | | - Michelle Petri
- Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Ellen M Ginzler
- Medicine/Rheumatology, SUNY Downstate Medical Center, New York City, New York, USA
| | - D J Wallace
- Cedars-Sinai/David Geffen School of Medicine at UCLA, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Sang-Cheol Bae
- Rheumatology, Hanyang University, Seongdong-gu, Seoul, The Republic of Korea
| | - Juanita Romero-Diaz
- Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Ciudad de Mexico, Mexico
| | - Mary Anne Dooley
- Medicine, Unversity of North Carolina, Chapel Hill, North Carolina, USA
| | - Christine Peschken
- Division of Rheumatology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - David Isenberg
- Division of Medicine, University College London, London, UK
| | | | - Susan Manzi
- Allegheny Singer Research Institute, Allegheny Health Network, Pittsburgh, Pennsylvania, USA
| | - Søren Jacobsen
- Copenhagen Lupus and Vasculitis Clinic, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark
| | - Sam Lim
- School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Ronald F van Vollenhoven
- Department of Rheumatology, Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
| | - Ola Nived
- Rheumatology, Lund University, Lund, Sweden
| | - Andreas Jönsen
- Faculty of Medicine, Department of Clinical Sciences Lund, Section of Rheumatology, Lund University, Lund, Sweden
| | - Diane L Kamen
- Medical University of South Carolina, Charleston, South Carolina, USA
| | - Cynthia Aranow
- Northwell Health Feinstein Institutes for Medical Research Institute of Health Innovations and Outcomes Research, Manhasset, New York, USA
| | - Jorge Sanchez-Guerrero
- Center for Prognosis Studies in the Rheumatic Diseases, Toronto Western Hospital, Toronto, Ontario, Canada
| | | | - Paul R Fortin
- Medicine-Rheumatology, Université Laval, Quebec, Quebec, Canada
| | - Graciela S Alarcón
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham Center for Health Promotion, Birmingham, Alabama, USA
| | - Joan T Merrill
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Kenneth Kalunian
- Division of Rheumatology, Allergy and Immunology, University of California San Diego School of Medicine, La Jolla, California, USA
| | - Manuel Ramos-Casals
- Department of Autoimmune Diseases, Universitat de Barcelona, Barcelona, Catalunya, Spain
| | - Kristján Steinsson
- Rheumatology, Department of Obstetrics and Gynecology, Landspitali University Hospital, Reyjavik, Iceland
| | - Asad Zoma
- Lanarkshire Centre for Rheumatology, Hairmyres Hospital, East Kilbride, South Lanarkshire, UK
| | - Anca Askanase
- Rheumatology, Columbia University Medical Center, New York, New York, USA
| | | | - Ian N Bruce
- Arc Epidemiology Unit, The University of Manchester, Manchester, UK
| | - Murat Inanc
- Department of Internal Medicine, Division of Rheumatology, Istanbul University, Fatih, Istanbul, Turkey
| | - Michal Abrahamowicz
- Department of Epidemiology Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Sasha Bernatsky
- Division of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Division of Rheumatology, McGill University Health Centre, Montreal, Quebec, Canada
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