A prospective observational study of the incidence, natural history, and risk factors for intravenous immunoglobulin-mediated hemolysis

Autor: Katerina Pavenski, Jeannie Callum, Lorna Sampson Riden, Christine Cserti-Gazdewich, Tik Nga Tong, Nagina Parmar, Chantal Armali, Aziz Jiwajee, Yulia Lin, Donald R. Branch, Jacob Pendergrast, Lani Lieberman, Beth Binnington, George Tomlinson, Kezia Willie-Ramharack, Wendy Lau, Nadine Shehata
Rok vydání: 2020
Předmět:
Zdroj: TransfusionREFERENCES. 61(4)
ISSN: 1537-2995
Popis: Background Intravenous Immune Globulin (IVIG) is used to treat numerous immune-mediated and inflammatory conditions. There is growing awareness of hemolysis, occasionally severe, as a side-effect of this therapy. While most cases are associated with anti-A and/or anti-B isoagglutinins, the frequency and mechanism of hemolysis remain poorly characterized. Study design and methods A prospective observational study was conducted to determine incidence, natural history and risk factors for IVIG-mediated hemolysis. A total of 99 infusions of high-dose IVIG (2 g/kg or higher) administered to 78 non-group O patients were monitored and graded according to Canadian IVIG Hemolysis Pharmacovigilance Group. Serum ferritin and C3/C4 levels were monitored as indicators of macrophage activation and complement consumption, respectively. Supplementary investigations included assessment for ABO zygosity, Secretor status, FcR polymorphisms, eluate IgG subclass, monocyte monolayer assay, and a panel of cytokines. Results Hemolysis was observed in 32 of 99 (32%) of infusions, with 19 of 99 (19%) grade 2 or higher. Hemolysis was only apparent 5-10 days after a completed IVIG infusion in 84% of cases and was associated with increases in serum ferritin without complement-consumption. In univariate analysis, increased risk was observed in group AB patients, first-time IVIG recipients, those not taking immuosuppressive medications, or patients treated with a specific IVIG brand; however, in multivariate analysis, product association was no longer observed. No other patient- or practice-related risk factors were identified. Conclusion IVIG-mediated hemolysis is common and frequently severe. Monitoring for 5-10 days following an infusion should be considered in non-O patients receiving high-dose IVIG with known risk factors.
Databáze: OpenAIRE