Andrej Segec1, Jim Slattery1, Daniel R Morales1,2, Justina Januskiene1, Xavier Kurz1, Peter Arlett1,3. 1. Pharmacovigilance and Epidemiology Department, European Medicines Agency, Amsterdam, The Netherlands. 2. Division of Population Health and Genomics, University of Dundee, Dundee, UK. 3. London School of Hygiene & Tropical Medicine, London, UK.
Abstract
PURPOSE: To evaluate the impact of including a medicine in the list of medicinal products subject to additional monitoring (AM) on the reporting of adverse drug reactions (ADRs) in the european economic area (EEA). METHODS: Interrupted time series using the monthly number of EEA ADR reports in EudraVigilance during 12 months before and after the addition to AM list. The main outcome was the change (%) in reporting of ADRs with step change as the a priori impact model. Further time series analysis was performed using Joinpoint Regression. RESULTS: The analysis included 11 active substances. No significant immediate (step change) increase of reporting was identified for any product at time of addition to AM list. We identified a significant gradual increase of ADR reporting after addition to AM list (slope change) for two out of five new products-boceprevir (10% per month, 95% confidence interval (CI) 3%-18%) and denosumab-Xgeva (13% per month, 95% CI 4%-22%). No change was identified for Prolia, another denosumab-containing product not subject to AM. No significant increase was identified for any product included in the AM list due to the requirement to conduct a PASS. Conversely, a gradual decrease in reporting was identified for natalizumab (-5% per month; 95% CI -10% to -1%), rivaroxaban (-5%; -8 to -3%), and varenicline (-16%; -21 to -10%). The results were corroborated by the Joinpoint analyses, which yielded similar results. CONCLUSIONS: We identified limited evidence that reporting of ADRs increased modestly and gradually for some new products and not for products with PASS requirement.
PURPOSE: To evaluate the impact of including a medicine in the list of medicinal products subject to additional monitoring (AM) on the reporting of adverse drug reactions (ADRs) in the european economic area (EEA). METHODS: Interrupted time series using the monthly number of EEA ADR reports in EudraVigilance during 12 months before and after the addition to AM list. The main outcome was the change (%) in reporting of ADRs with step change as the a priori impact model. Further time series analysis was performed using Joinpoint Regression. RESULTS: The analysis included 11 active substances. No significant immediate (step change) increase of reporting was identified for any product at time of addition to AM list. We identified a significant gradual increase of ADR reporting after addition to AM list (slope change) for two out of five new products-boceprevir (10% per month, 95% confidence interval (CI) 3%-18%) and denosumab-Xgeva (13% per month, 95% CI 4%-22%). No change was identified for Prolia, another denosumab-containing product not subject to AM. No significant increase was identified for any product included in the AM list due to the requirement to conduct a PASS. Conversely, a gradual decrease in reporting was identified for natalizumab (-5% per month; 95% CI -10% to -1%), rivaroxaban (-5%; -8 to -3%), and varenicline (-16%; -21 to -10%). The results were corroborated by the Joinpoint analyses, which yielded similar results. CONCLUSIONS: We identified limited evidence that reporting of ADRs increased modestly and gradually for some new products and not for products with PASS requirement.
Authors: Andrej Segec; Jim Slattery; Daniel R Morales; Justina Januskiene; Xavier Kurz; Peter Arlett Journal: Pharmacoepidemiol Drug Saf Date: 2020-12-08 Impact factor: 2.732
Authors: Andrej Segec; Jim Slattery; Daniel R Morales; Justina Januskiene; Xavier Kurz; Peter Arlett Journal: Pharmacoepidemiol Drug Saf Date: 2020-12-08 Impact factor: 2.732