Adverse Reactions to Gadoterate Meglumine: Review of Over 25 Years of Clinical Use and More Than 50 Million Doses

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ObjectiveThe aim of this study was to evaluate the safety profile of gadoterate meglumine from clinical trials, postmarketing observational studies, and pharmacovigilance reports of adverse drug reactions (ADRs) encompassing 25 years of clinical use and over 50 million administered doses.Materials and MethodsAssessment of the safety of gadoterate meglumine through processing and review of all safety data was collected after magnetic resonance imaging procedures. All ADRs originated from 3 major sources: (1) a clinical study database including 50 phase I to IV studies involving 2822 patients, (2) a safety database including 8 postmarketing safety studies (PMSs) involving 151,050 patients, and (3) a pharmacovigilance database compiling safety experience following over 50 million doses administered between March 1989 and September 2015.ResultsAmong the 2822 patients receiving gadoterate meglumine in the clinical trials, 241 (8.5%) experienced 405 postinjection adverse events (AEs), considered related to the contrast agent for 113 patients (4.0%). Serious AEs were reported for 27 patients (1.0%) and assessed as related to gadoterate meglumine for 2 patients (0.07%). None of the PMS studies showed evidence of unexpected safety issues, with a very low rate of AEs (<1%). Postmarketing safety experience with over 50 million doses of gadoterate meglumine prescribed for 25 years of approved use worldwide compiled spontaneous reports for 3797 patients who experienced 8397 ADRs, yielding a very low reported incidence of ADRs of 0.007% of patients. There was no single-agent case of confirmed nephrogenic systemic fibrosis with gadoterate meglumine either from clinical development programs or from postmarketing experience.ConclusionsBased on clinical trials, postmarketing observational studies and pharmacovigilance data, a very low incidence of ADRs was reported with gadoterate meglumine, which has no impact on its favourable benefit-risk ratio.

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