Ceftolozane-Tazobactam for Directed Treatment of Pseudomonas Aeruginosa Bacteremia and Pneumonia in Patients With Hematological Malignancies and Hematopoietic Stem Cell Transplantation

Summary

The goal of this clinical trial is to learn whether the antibiotic ceftolozane-tazobactam works to treat serious Pseudomonas aeruginosa infections in people with blood cancers or who received a stem cell transplant. The main question it aims to answer is whether participants reach clinical success 30 days after the infection is first found. Clinical success means the person is alive, their infection symptoms are improving, and the infection has not returned. Participants will receive ceftolozane-tazobactam through a vein every 8 hours for 10 to 14 days. Treatment may continue for up to 21 days if the infection is not improving or keeps coming back. The infection is diagnosed using the hospital's standard rapid molecular tests, which help confirm Pseudomonas aeruginosa quickly so treatment can begin right away. Researchers will follow participants during their hospital stay and check on them around 30 and 60 days to see how well the treatment worked. The study will also look at how long it takes for the infection to clear, how long participants stay in the hospital or intensive care unit, and whether the bacteria become resistant to antibiotics. In addition to the prospective ceftolozane-tazobactam group, the study includes a historical control group made up of patients with similar infections who were treated in the past with standard anti-pseudomonal antibiotics (such as cefepime, ceftazidime, piperacillin-tazobactam, or meropenem). Data from these historical controls are collected by chart review and analyzed alongside the prospective group to compare outcomes. Historical controls do not receive study-directed treatment and are not actively enrolled under this protocol.

Timeline

Start

2023-01-10

Primary completion

2025-03-16

Completion

2025-03-16

Publications

• Background Satlin MJ, Walsh TJ. Multidrug-resistant Enterobacteriaceae, Pseudomonas aeruginosa, and vancomycin-resistant Enterococcus: Three major threats to hematopoietic stem cell transplant recipients. Transpl Infect Dis. 2017 Dec;19(6):10.1111/tid.12762. doi: 10.1111/tid.12762. Epub 2017 Oct 25.
• Background Freifeld AG, Bow EJ, Sepkowitz KA, Boeckh MJ, Ito JI, Mullen CA, Raad II, Rolston KV, Young JA, Wingard JR; Infectious Diseases Society of America. Clinical practice guideline for the use of antimicrobial agents in neutropenic patients with cancer: 2010 update by the infectious diseases society of america. Clin Infect Dis. 2011 Feb 15;52(4):e56-93. doi: 10.1093/cid/cir073.
• Background Nguyen L, Garcia J, Gruenberg K, MacDougall C. Multidrug-Resistant Pseudomonas Infections: Hard to Treat, But Hope on the Horizon? Curr Infect Dis Rep. 2018 Jun 6;20(8):23. doi: 10.1007/s11908-018-0629-6.
• Background Kaye KS, Pogue JM. Infections Caused by Resistant Gram-Negative Bacteria: Epidemiology and Management. Pharmacotherapy. 2015 Oct;35(10):949-62. doi: 10.1002/phar.1636.
• Background Munita JM, Aitken SL, Miller WR, Perez F, Rosa R, Shimose LA, Lichtenberger PN, Abbo LM, Jain R, Nigo M, Wanger A, Araos R, Tran TT, Adachi J, Rakita R, Shelburne S, Bonomo RA, Arias CA. Multicenter Evaluation of Ceftolozane/Tazobactam for Serious Infections Caused by Carbapenem-Resistant Pseudomonas aeruginosa. Clin Infect Dis. 2017 Jul 1;65(1):158-161. doi: 10.1093/cid/cix014.
• Background Gallagher JC, Satlin MJ, Elabor A, Saraiya N, McCreary EK, Molnar E, El-Beyrouty C, Jones BM, Dixit D, Heil EL, Claeys KC, Hiles J, Vyas NM, Bland CM, Suh J, Biason K, McCoy D, King MA, Richards L, Harrington N, Guo Y, Chaudhry S, Lu X, Yu D. Ceftolozane-Tazobactam for the Treatment of Multidrug-Resistant Pseudomonas aeruginosa Infections: A Multicenter Study. Open Forum Infect Dis. 2018 Oct 31;5(11):ofy280. doi: 10.1093/ofid/ofy280. eCollection 2018 Nov.
• Background Petraitis V, Petraitiene R, Naing E, Aung T, Thi WP, Kavaliauskas P, Win Maung BB, Michel AO, Ricart Arbona RJ, DeRyke AC, Culshaw DL, Nicolau DP, Satlin MJ, Walsh TJ. Ceftolozane-Tazobactam in the Treatment of Experimental Pseudomonas aeruginosa Pneumonia in Persistently Neutropenic Rabbits: Impact on Strains with Genetically Defined Mechanisms of Resistance. Antimicrob Agents Chemother. 2019 Aug 23;63(9):e00344-19. doi: 10.1128/AAC.00344-19. Print 2019 Sep.

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