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Harmon M, Riazi K, Callum J, Arnold DM, Barty R, Sidhu D, Heddle NM, MacLeod L, Li N. Immunoglobulin utilization in Canada: a comparative analysis of provincial guidelines and a scoping review of the literature. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2023; 19:85. [PMID: 37717038 PMCID: PMC10504792 DOI: 10.1186/s13223-023-00841-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/05/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND Canada has high immunoglobulin (IG) product utilization, raising concerns about appropriate utilization, cost and risk of shortages. Currently, there is no national set of standardized IG guidelines, and considerable variations exist among the existing provincial guidelines. The aims of this study were: (1) to compare the existing Canadian provincial guidelines on the use of IG products to identify their consistencies and differences and (2) to examine the existing research in Canada on IG supply and utilization following the establishment of IG guidelines to understand the scope of research and pinpoint the gaps. METHODS A comparative analysis accounted for the differences across provincial IG guidelines. We highlighted similarities and differences in recommendations for medical conditions. A scoping review of citations from MEDLINE, PubMed, Scopus and Embase databases was conducted for studies published from January 01, 2014, to April 12, 2023. RESULTS While provincial guidelines represented a considerable overlap in the medical conditions delineated and relatively uniform dose calculations, numerous differences were observed, including in recommendation categories, provision of pediatric dosing, and divergent recommendations for identical conditions based on patient demographics. The scoping review identified 29 studies that focused on the use of IG in Canada. The themes of the studies included: IVIG utilization and audits, the switch from IVIG to SCIG, patient satisfaction with IVIG and/or SCIG, the economic impact of self-administered SCIG versus clinically administered IVIG therapy, and the efficacy and cost-effectiveness of alternative medications to IG treatment. CONCLUSION The differences in guidelines across provinces and the factors influencing IVIG/SCIG use, patient satisfaction, and cost savings are highlighted. Future research may focus on clarifying costs and comparative effectiveness, exploring factors influencing guideline adherence, and evaluating the impact of updated guidelines on IG use and patient outcomes.
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Affiliation(s)
- Megan Harmon
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, CWPH 5E37, 3280 Hospital Dr NW, Calgary, AB, T2N 4Z6, Canada
| | - Kiarash Riazi
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, CWPH 5E37, 3280 Hospital Dr NW, Calgary, AB, T2N 4Z6, Canada
| | - Jeannie Callum
- Department of Pathology and Molecular Medicine, Kingston Health Sciences Centre and Queen's University, Kingston, ON, Canada
- Department of Laboratory Medicine and Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Donald M Arnold
- Michael G. DeGroote Centre for Transfusion Research, McMaster University, Hamilton, ON, Canada
- Centre for Innovation, Canadian Blood Services, Ottawa, ON, Canada
- Department of Medicine, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Rebecca Barty
- Michael G. DeGroote Centre for Transfusion Research, McMaster University, Hamilton, ON, Canada
- Ontario Regional Blood Coordinating Network, Hamilton, ON, Canada
| | - Davinder Sidhu
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Nancy M Heddle
- Michael G. DeGroote Centre for Transfusion Research, McMaster University, Hamilton, ON, Canada
- Centre for Innovation, Canadian Blood Services, Ottawa, ON, Canada
| | - Laurie MacLeod
- Ontario Regional Blood Coordinating Network, Hamilton, ON, Canada
| | - Na Li
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, CWPH 5E37, 3280 Hospital Dr NW, Calgary, AB, T2N 4Z6, Canada.
- Michael G. DeGroote Centre for Transfusion Research, McMaster University, Hamilton, ON, Canada.
- Department of Computing and Software, McMaster University, Hamilton, ON, Canada.
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Gupta S, DeAngelo J, Melamed I, Walter JE, Kobayashi AL, Bridges T, Sublett JW, Bernstein JA, Koterba A, Manning M, Maltese J, Hoeller S, Turpel-Kantor E, Kreuwel H, Kobayashi RH. Subcutaneous Immunoglobulin 16.5% (Cutaquig®) in Primary Immunodeficiency Disease: Safety, Tolerability, Efficacy, and Patient Experience with Enhanced Infusion Regimens. J Clin Immunol 2023:10.1007/s10875-023-01509-4. [PMID: 37160610 PMCID: PMC10169187 DOI: 10.1007/s10875-023-01509-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/03/2023] [Indexed: 05/11/2023]
Abstract
PURPOSE To achieve reductions in infusion time, infusion sites, and frequency, a prospective, open-label, multicenter, Phase 3 study evaluated the safety, efficacy, and tolerability of subcutaneous immunoglobulin (SCIG) 16.5% (Cutaquig®, Octapharma) at enhanced infusion regimens. METHODS Three separate cohorts received SCIG 16.5% evaluating volume, rate, and frequency: Cohort 1) volume assessment/site: up to a maximum 100 mL/site; Cohort 2) infusion flow rate/site: up to a maximum of 100 mL/hr/site or the maximum flow rate achievable by the tubing; Cohort 3) infusion frequency: every other week at twice the patient's weekly dose. RESULTS For Cohort 1 (n = 15), the maximum realized volume per site was 108 mL/site, exceeding the currently labeled (US) maximum (up to 40 mL/site for adults). In Cohort 2 (n = 15), the maximum realized infusion flow rate was 67.5 mL/hr/site which is also higher than the labeled (US) maximum (up to 52 mL/hr/site). In Cohort 3 (n = 34), the mean total trough levels for every other week dosing demonstrated equivalency to weekly dosing (p value = 0.0017). All regimens were well tolerated. There were no serious bacterial infections (SBIs). Most patients had mild (23.4%) or moderate (56.3%) adverse events. The majority of patients found the new infusion regimens to be better or somewhat better than their previous regimens and reported that switching to SCIG 16.5% was easy. CONCLUSIONS SCIG 16.5% (Cutaquig®), infusions are efficacious, safe, and well tolerated with reduced infusion time, fewer infusion sites, and reduced frequency. Further, the majority of patients found the new infusion regimens to be better or somewhat better than their previous regimens.
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Affiliation(s)
| | | | | | | | | | - Tracy Bridges
- Allergy and Asthma Clinics of Georgia, Albany, GA, USA
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Gupta S, Kobayashi RH, Litzman J, Cherwin L, Hoeller S, Kreuwel H. Subcutaneous immunoglobulin 16.5% for the treatment of pediatric patients with primary antibody immunodeficiency. Expert Rev Clin Immunol 2023; 19:7-17. [PMID: 36346032 DOI: 10.1080/1744666x.2023.2144836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
INTRODUCTION Human immunoglobulin (IG) administered intravenously (IVIG) or subcutaneously (SCIG) is used to prevent infections in patients with primary immunodeficiency diseases (PIDDs) such as primary antibody immunodeficiencies. AREAS COVERED This review provides an overview of PIDD with a focus on SCIG treatment, including the properties and clinical trial results of a new SCIG 16.5% (Cutaquig, Octapharma) in pediatric patients. We also discuss the various benefits of SCIG including stable serum immunoglobulin G levels, high tolerability with fewer systemic side effects, and the flexibility of self-administration. EXPERT OPINION Individualized treatment for PIDD in children is necessary given the different factors that affect administration of SCIG. Variables such as the dose, dosing interval, administration sites, and ancillary equipment can be adjusted to impact the long-term satisfaction with SCIG administration in pediatric patients. The successful work that has been conducted by both professional and patient organizations to increase awareness of PIDD, especially in pediatric patients, is substantial and ongoing. The importance of early diagnosis and treatment in the pediatric patient population cannot be overstated. The safety, efficacy, and tolerability of SCIG 16.5% have been demonstrated in pediatric patients with PIDDs providing an additional therapeutic option in this vulnerable population.
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Affiliation(s)
- Sudhir Gupta
- Division of Basic and Clinical Immunology, University of California, Irvine, Irvine, CA, USA
| | - Roger H Kobayashi
- School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jiří Litzman
- Department of Clinical Immunology and Allergology, St. Anne's University in Brno, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Laurel Cherwin
- Scientific and Medical Affairs, Octapharma AG, Paramus, NJ, USA
| | - Sonja Hoeller
- Scientific and Medical Affairs, Octapharma AG, Paramus, NJ, USA
| | - Huub Kreuwel
- Scientific and Medical Affairs, Octapharma AG, Paramus, NJ, USA
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