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Flanagan RJ, Lally J, Gee S, Lyon R, Every-Palmer S. Clozapine in the treatment of refractory schizophrenia: a practical guide for healthcare professionals. Br Med Bull 2020; 135:73-89. [PMID: 32885238 PMCID: PMC7585831 DOI: 10.1093/bmb/ldaa024] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/18/2020] [Accepted: 06/29/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Clozapine remains the only medication licensed for treating refractory schizophrenia. However, it remains underutilized in part due to concerns regarding adverse events. SOURCES OF DATA Published literature. AREAS OF AGREEMENT Common adverse events during clozapine treatment include sedation, hypersalivation, postural hypotension, dysphagia, gastrointestinal hypomotility, weight gain, diabetes mellitus and dyslipidaemia. Rare but serious events include agranulocytosis, cardiomyopathy, myocarditis, pneumonia, paralytic ileus and seizure. AREAS OF CONTROVERSY It remains unclear how best to minimize clozapine-induced morbidity/mortality (i) during dose titration, (ii) from hypersalivation and (iii) from gastrointestinal hypomotility. It is also unclear how clozapine pharmacokinetics are affected by (i) gastrointestinal hypomotility, (ii) systemic infection and (iii) passive exposure to cigarette smoke. Whether monthly haematological monitoring needs to continue after 12 months of uninterrupted therapy is also a subject of debate. GROWING POINTS There is a need for better management of serious clozapine-related adverse events in addition to agranulocytosis. There is also a need for better education of patients and carers, general practitioners, A&E and ITU staff and others of the problems posed in using clozapine safely. AREAS TIMELY FOR DEVELOPING RESEARCH There is a need for more research on assessing clozapine dosage (i) as patients get older, (ii) with respect to exposure to cigarette smoke and (iii) optimizing response if adverse events or other factors limit dosage.
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Affiliation(s)
- R J Flanagan
- Precision Medicine, Networked Services, Bessemer Wing, King's College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK.,Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London SE5 8AF, UK
| | - J Lally
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, De Crespigny Park, London SE5 8AF, UK.,Department of Psychiatry, Mater Misericordiae University Hospital, 63 Eccles Street, Dublin 7, Ireland.,Department of Psychiatry, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland
| | - S Gee
- Pharmacy Department, South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, UK
| | - R Lyon
- Department of Pharmacy, Sussex Partnership NHS Foundation Trust, Chichester Centre, Graylingwell Drive, Chichester, West Sussex PO19 6GS UK
| | - S Every-Palmer
- Department of Psychological Medicine, University of Otago, Wellington, PO Box 7343, Newtown, Wellington 6242, NZ
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Firth J, Siddiqi N, Koyanagi A, Siskind D, Rosenbaum S, Galletly C, Allan S, Caneo C, Carney R, Carvalho AF, Chatterton ML, Correll CU, Curtis J, Gaughran F, Heald A, Hoare E, Jackson SE, Kisely S, Lovell K, Maj M, McGorry PD, Mihalopoulos C, Myles H, O'Donoghue B, Pillinger T, Sarris J, Schuch FB, Shiers D, Smith L, Solmi M, Suetani S, Taylor J, Teasdale SB, Thornicroft G, Torous J, Usherwood T, Vancampfort D, Veronese N, Ward PB, Yung AR, Killackey E, Stubbs B. The Lancet Psychiatry Commission: a blueprint for protecting physical health in people with mental illness. Lancet Psychiatry 2019; 6:675-712. [PMID: 31324560 DOI: 10.1016/s2215-0366(19)30132-4] [Citation(s) in RCA: 693] [Impact Index Per Article: 138.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 04/01/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Joseph Firth
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia; Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia.
| | - Najma Siddiqi
- Department of Health Sciences, University of York, Hull York Medical School, Bradford, UK; Bradford District Care NHS Foundation Trust, Bradford, UK
| | - Ai Koyanagi
- Research and Development Unit, Parc Sanitari Sant Joan de Déu, Universitat de Barcelona, Fundació Sant Joan de Déu, Barcelona, Spain; Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental, Madrid, Spain; Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain
| | - Dan Siskind
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia; School of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Simon Rosenbaum
- School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Cherrie Galletly
- Ramsay Health Care Mental Health, Adelaide, SA, Australia; Northern Adelaide Local Health Network, Adelaide, SA, Australia; Discipline of Psychiatry, University of Adelaide, Adelaide, SA, Australia
| | - Stephanie Allan
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Constanza Caneo
- Departamento de Psiquiatría, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rebekah Carney
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Youth Mental Health Research Unit, Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Andre F Carvalho
- Centre for Addiction and Mental Health, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Mary Lou Chatterton
- Deakin Health Economics, Institute for Health Transformation, Faculty of Health, Deakin University, Melbourne, VIC, Australia
| | - Christoph U Correll
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA; Department of Psychiatry, Zucker Hillside Hospital, Glen Oaks, NY, USA; Department of Child and Adolescent Psychiatry, Charité Universitätsmedizin, Berlin, Germany
| | - Jackie Curtis
- School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; Keeping the Body in Mind Program, South Eastern Sydney Local Health District, Sydney, NSW, Australia
| | - Fiona Gaughran
- South London and Maudsley NHS Foundation Trust, London, UK; Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Adrian Heald
- Division of Diabetes, Endocrinology and Gastroenterology, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Diabetes and Endocrinology, Salford Royal Hospital, Salford, UK
| | - Erin Hoare
- Food and Mood Centre, Deakin University, Melbourne, VIC, Australia
| | - Sarah E Jackson
- Department of Behavioural Science and Health, University College London, London, UK
| | - Steve Kisely
- School of Medicine, University of Queensland, Brisbane, QLD, Australia; Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | - Karina Lovell
- Division of Nursing, Midwifery and Social Work, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Mario Maj
- Department of Psychiatry, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Patrick D McGorry
- Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia
| | - Cathrine Mihalopoulos
- Deakin Health Economics, Institute for Health Transformation, Faculty of Health, Deakin University, Melbourne, VIC, Australia
| | - Hannah Myles
- Discipline of Psychiatry, University of Adelaide, Adelaide, SA, Australia
| | - Brian O'Donoghue
- Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia
| | - Toby Pillinger
- South London and Maudsley NHS Foundation Trust, London, UK; Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; Medical Research Council London Institute of Medical Sciences, London, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - Jerome Sarris
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia; Department of Psychiatry, University of Melbourne, Melbourne, VIC, Australia; The Melbourne Clinic, Melbourne, VIC, Australia
| | - Felipe B Schuch
- Department of Sports Methods and Techniques, Federal University of Santa Maria, Santa Maria, Brazil
| | - David Shiers
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Psychosis Research Unit, Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Lee Smith
- Cambridge Centre for Sport and Exercise Sciences, Anglia Ruskin University, Cambridge, UK
| | - Marco Solmi
- Neurosciences Department and Padua Neuroscience Centre, University of Padua, Padua, Italy
| | - Shuichi Suetani
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia; Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia; Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia
| | - Johanna Taylor
- Department of Health Sciences, University of York, Hull York Medical School, Bradford, UK
| | - Scott B Teasdale
- School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; Keeping the Body in Mind Program, South Eastern Sydney Local Health District, Sydney, NSW, Australia
| | - Graham Thornicroft
- Centre for Global Mental Health, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - John Torous
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Tim Usherwood
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia; Department of General Practice, Westmead Clinical School, University of Sydney, Westmead, NSW, Australia
| | - Davy Vancampfort
- Department of Rehabilitation Sciences, Katholieke Universiteit Leuven, Leuven, Belgium; University Psychiatric Centre, Katholieke Universiteit Leuven, Kortenberg, Belgium
| | - Nicola Veronese
- National Research Council, Neuroscience Institute, Aging Branch, Padova, Italy
| | - Philip B Ward
- School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; Schizophrenia Research Unit, Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Alison R Yung
- Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia
| | - Eoin Killackey
- Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia
| | - Brendon Stubbs
- South London and Maudsley NHS Foundation Trust, London, UK; Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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