PMID- 33415492 OWN - NLM STAT- MEDLINE DCOM- 20210907 LR - 20210907 IS - 1435-4373 (Electronic) IS - 0934-9723 (Print) IS - 0934-9723 (Linking) VI - 40 IP - 6 DP - 2021 Jun TI - Serious adverse events with novel beta-lactam/beta-lactamase inhibitor combinations: a large-scale pharmacovigilance analysis. PG - 1169-1176 LID - 10.1007/s10096-020-04149-3 [doi] AB - The purpose of this study is to characterize adverse events (AEs) of clinical interest reported with ceftolozane-tazobactam and ceftazidime-avibactam, as an aid in monitoring patients affected by severe multidrug-resistant Gram-negative infections. We queried the worldwide FDA Adverse Event Reporting System (FAERS) and performed disproportionality analysis, selecting only designated medical events (DMEs) where ceftolozane-tazobactam and ceftazidime-avibactam were reported as suspect. Serious neurological AEs were further investigated. The reporting odds ratios were calculated, deemed significant by the lower limit of the 95% confidence interval (LL95% CI) > 1. All other drugs/events recorded in FAERS and cephalosporins showing clinical evidence of neurological AEs were respectively selected as comparator for analysis of DMEs and neurotoxicity. Qualitative analysis including case-by-case assessment and deduplication was also performed. Overall, 654 and 506 reports mentioning respectively ceftolozane-tazobactam and ceftazidime-avibactam were found, with DMEs accounting respectively for 13.1% and 10.9% of cases. Agranulocytosis (N = 12; LL95% CI = 12.40) and pancytopenia (14; 6.18) emerged as unexpected AEs with ceftolozane-tazobactam, while acute pancreatitis (7; 8.63) was an over-reported unexpected DME with ceftazidime-avibactam. After deduplication, four unequivocally different cases of agranulocytosis with ceftolozane-tazobactam were retained, occurring on average after 8.8 days. Causality was probable and possible respectively in three and one case. Among neurological AEs exhibiting significant disproportionality, encephalopathy with both antibiotics and mental status changes with ceftazidime-avibactam were retained in at least three cases after deduplication. Although rare, clinicians should monitor high-risk patients (i.e. individuals affected by haematological malignances, HIV infection, or treated with concomitant myelotoxic agents) for early unexpected occurrence of agranulocytosis with ceftolozane-tazobactam. FAU - Gatti, Milo AU - Gatti M AUID- ORCID: 0000-0003-3018-3779 AD - Pharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy. milo.gatti2@unibo.it. FAU - Raschi, Emanuel AU - Raschi E AUID- ORCID: 0000-0003-0487-7996 AD - Pharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy. FAU - De Ponti, Fabrizio AU - De Ponti F AUID- ORCID: 0000-0002-0367-9595 AD - Pharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy. LA - eng PT - Journal Article PT - Observational Study DEP - 20210107 PL - Germany TA - Eur J Clin Microbiol Infect Dis JT - European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology JID - 8804297 RN - 0 (Anti-Bacterial Agents) RN - 0 (Azabicyclo Compounds) RN - 0 (Cephalosporins) RN - 0 (Drug Combinations) RN - 0 (Lactams) RN - 0 (avibactam, ceftazidime drug combination) RN - 0 (beta-Lactamase Inhibitors) RN - 0 (ceftolozane, tazobactam drug combination) RN - 9M416Z9QNR (Ceftazidime) RN - SE10G96M8W (Tazobactam) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Agranulocytosis/*etiology MH - Anti-Bacterial Agents/*adverse effects/therapeutic use MH - Azabicyclo Compounds/adverse effects/therapeutic use MH - Ceftazidime/adverse effects/therapeutic use MH - Cephalosporins/adverse effects/therapeutic use MH - Drug Combinations MH - Drug Therapy, Combination/adverse effects MH - Female MH - Gram-Negative Bacterial Infections/*drug therapy MH - Humans MH - Lactams/*adverse effects/therapeutic use MH - Male MH - Microbial Sensitivity Tests MH - Middle Aged MH - Pancytopenia/etiology MH - Pharmacovigilance MH - Retrospective Studies MH - Tazobactam/adverse effects/therapeutic use MH - beta-Lactamase Inhibitors/*adverse effects/therapeutic use PMC - PMC8139903 OTO - NOTNLM OT - Agranulocytosis OT - Ceftazidime-avibactam OT - Ceftolozane-tazobactam OT - Neurotoxicity OT - Safety profile COIS- The authors declare that they have no conflict of interest. EDAT- 2021/01/09 06:00 MHDA- 2021/09/08 06:00 PMCR- 2021/01/07 CRDT- 2021/01/08 06:15 PHST- 2020/10/23 00:00 [received] PHST- 2020/12/28 00:00 [accepted] PHST- 2021/01/09 06:00 [pubmed] PHST- 2021/09/08 06:00 [medline] PHST- 2021/01/08 06:15 [entrez] PHST- 2021/01/07 00:00 [pmc-release] AID - 10.1007/s10096-020-04149-3 [pii] AID - 4149 [pii] AID - 10.1007/s10096-020-04149-3 [doi] PST - ppublish SO - Eur J Clin Microbiol Infect Dis. 2021 Jun;40(6):1169-1176. doi: 10.1007/s10096-020-04149-3. Epub 2021 Jan 7.