PMID- 31400759 OWN - NLM STAT- MEDLINE DCOM- 20210106 LR - 20220531 IS - 1537-6591 (Electronic) IS - 1058-4838 (Print) IS - 1058-4838 (Linking) VI - 70 IP - 9 DP - 2020 Apr 15 TI - RESTORE-IMI 1: A Multicenter, Randomized, Double-blind Trial Comparing Efficacy and Safety of Imipenem/Relebactam vs Colistin Plus Imipenem in Patients With Imipenem-nonsusceptible Bacterial Infections. PG - 1799-1808 LID - 10.1093/cid/ciz530 [doi] AB - BACKGROUND: The beta-lactamase inhibitor relebactam can restore imipenem activity against imipenem-nonsusceptible gram-negative pathogens. We evaluated imipenem/relebactam for treating imipenem-nonsusceptible infections. METHODS: Randomized, controlled, double-blind, phase 3 trial. Hospitalized patients with hospital-acquired/ventilator-associated pneumonia, complicated intraabdominal infection, or complicated urinary tract infection caused by imipenem-nonsusceptible (but colistin- and imipenem/relebactam-susceptible) pathogens were randomized 2:1 to 5-21 days imipenem/relebactam or colistin+imipenem. Primary endpoint: favorable overall response (defined by relevant endpoints for each infection type) in the modified microbiologic intent-to-treat (mMITT) population (qualifying baseline pathogen and >/=1 dose study treatment). Secondary endpoints: clinical response, all-cause mortality, and treatment-emergent nephrotoxicity. Safety analyses included patients with >/=1 dose study treatment. RESULTS: Thirty-one patients received imipenem/relebactam and 16 colistin+imipenem. Among mITT patients (n = 21 imipenem/relebactam, n = 10 colistin+imipenem), 29% had Acute Physiology and Chronic Health Evaluation II scores >15, 23% had creatinine clearance <60 mL/min, and 35% were aged >/=65 years. Qualifying baseline pathogens: Pseudomonas aeruginosa (77%), Klebsiella spp. (16%), other Enterobacteriaceae (6%). Favorable overall response was observed in 71% imipenem/relebactam and 70% colistin+imipenem patients (90% confidence interval [CI] for difference, -27.5, 21.4), day 28 favorable clinical response in 71% and 40% (90% CI, 1.3, 51.5), and 28-day mortality in 10% and 30% (90% CI, -46.4, 6.7), respectively. Serious adverse events (AEs) occurred in 10% of imipenem/relebactam and 31% of colistin+imipenem patients, drug-related AEs in 16% and 31% (no drug-related deaths), and treatment-emergent nephrotoxicity in 10% and 56% (P = .002), respectively. CONCLUSIONS: Imipenem/relebactam is an efficacious and well-tolerated treatment option for carbapenem-nonsusceptible infections. CLINICAL TRIALS REGISTRATION: NCT02452047. CI - (c) The Author(s) 2019. Published by Oxford University Press for the Infectious Diseases Society of America. FAU - Motsch, Johann AU - Motsch J AD - Universitatsklinikum Heidelberg, Germany. FAU - Murta de Oliveira, Claudia AU - Murta de Oliveira C AD - Santa Casa de Misericordia, Belo Horizonte, Brazil. FAU - Stus, Viktor AU - Stus V AD - Dnipropetrovsk Medical Academy, Dnipro, Ukraine. FAU - Koksal, Iftihar AU - Koksal I AD - Karadeniz Technical University School of Medicine, Trabzon, Turkey. FAU - Lyulko, Olexiy AU - Lyulko O AD - Department of Urology, Zaporozhye State Medical University, Zaporozhye, Ukraine. FAU - Boucher, Helen W AU - Boucher HW AD - Tufts Medical Center, Boston, Massachusetts. FAU - Kaye, Keith S AU - Kaye KS AD - University of Michigan, Ann Arbor, Michigan. FAU - File, Thomas M AU - File TM AD - Summa Health, Akron, Ohio. FAU - Brown, Michelle L AU - Brown ML AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Khan, Ireen AU - Khan I AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Du, Jiejun AU - Du J AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Joeng, Hee-Koung AU - Joeng HK AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Tipping, Robert W AU - Tipping RW AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Aggrey, Angela AU - Aggrey A AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Young, Katherine AU - Young K AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Kartsonis, Nicholas A AU - Kartsonis NA AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Butterton, Joan R AU - Butterton JR AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Paschke, Amanda AU - Paschke A AD - Merck & Co., Inc., Kenilworth, New Jersey. LA - eng SI - ClinicalTrials.gov/NCT02452047 PT - Clinical Trial, Phase III PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Clin Infect Dis JT - Clinical infectious diseases : an official publication of the Infectious Diseases Society of America JID - 9203213 RN - 0 (Anti-Bacterial Agents) RN - 0 (Azabicyclo Compounds) RN - 71OTZ9ZE0A (Imipenem) RN - Y1MYA2UHFL (relebactam) RN - Z67X93HJG1 (Colistin) SB - IM CIN - Clin Infect Dis. 2021 Apr 26;72(8):1485-1486. PMID: 32634242 CIN - Clin Infect Dis. 2021 Apr 26;72(8):1484-1485. PMID: 32634243 MH - Anti-Bacterial Agents/adverse effects MH - Azabicyclo Compounds/adverse effects MH - *Bacterial Infections/drug therapy MH - Colistin/adverse effects MH - Humans MH - *Imipenem/adverse effects MH - Microbial Sensitivity Tests PMC - PMC7156774 OTO - NOTNLM OT - KPC OT - cIAI OT - cUTI OT - carbapenem resistant OT - nosocomial pneumonia EDAT- 2019/08/11 06:00 MHDA- 2021/01/07 06:00 PMCR- 2019/08/10 CRDT- 2019/08/11 06:00 PHST- 2019/03/05 00:00 [received] PHST- 2019/06/24 00:00 [accepted] PHST- 2019/08/11 06:00 [pubmed] PHST- 2021/01/07 06:00 [medline] PHST- 2019/08/11 06:00 [entrez] PHST- 2019/08/10 00:00 [pmc-release] AID - 5546004 [pii] AID - ciz530 [pii] AID - 10.1093/cid/ciz530 [doi] PST - ppublish SO - Clin Infect Dis. 2020 Apr 15;70(9):1799-1808. doi: 10.1093/cid/ciz530.