Comparative Effectiveness of Antibiotic Prophylaxis Regimens in Pediatric Acute Myeloid Leukemia
BACKGROUND: There are limited real-world comparative effectiveness data on different antibiotic prophylaxis regimens of children receiving treatment for acute myeloid leukemia (AML). PROCEDURE: We compared the effectiveness of third/fourth-generation cephalosporin (cephalosporin) or quinolone prophylaxis with no antibiotic prophylaxis to prevent bacteremia during frontline AML therapy using an established cohort from 17 institutions. The prophylaxis regimen was at the discretion of the treating clinician. Secondary outcomes were Clostridioides difficile infection (CDI), time to next chemotherapy course, and mortality. RESULTS: A total of 550 pediatric patients with AML contributed data from 1758 chemotherapy courses. Incident bacteremia was lower following cephalosporin and quinolone prophylaxis compared to no prophylaxis in post-induction I chemotherapy courses (6.9% cephalosporin vs. 33.9% no prophylaxis, risk ratio [RR] 0.20, p < 0.01; 20.8% quinolone vs. 33.9% no prophylaxis, RR 0.61, p < 0.01). Reduction in bacteremia risk was greater with cephalosporin than with quinolone prophylaxis (RR 0.33, p < 0.01). CDI was rare and was not increased in those receiving prophylaxis (2.5% quinolone vs. 3.6% cephalosporin vs. 5.7% no prophylaxis; p = 0.05). Time to next course of chemotherapy was similar between groups except during intensification I, where patients receiving cephalosporin prophylaxis had a longer time to next chemotherapy (50 days for cephalosporin vs. 41 days for no prophylaxis, p < 0.01). Deaths during treatment were rare. CONCLUSIONS: Cephalosporin and quinolone prophylaxis reduced bacteremia without an increased risk of CDI. Additional work is needed to assess the differential impact of prophylaxis regimen on subsequent use of empiric therapy and development of resistance.
Authors
- Elaine R. Morgan (ORCID: https://orcid.org/0000-0003-2505-8885)
- Rajen J. Mody (ORCID: https://orcid.org/0000-0001-5574-1779)
- Yimei Li (ORCID: https://orcid.org/0000-0001-9067-6992)
- Emi Caywood (ORCID: https://orcid.org/0000-0002-2873-6058)
- Tamara P. Miller (ORCID: https://orcid.org/0000-0003-4250-5376)
- Jennifer Jill Wilkes (ORCID: https://orcid.org/0000-0002-3806-6019)
- Maria Monica Gramatges (ORCID: https://orcid.org/0000-0002-0947-104X)
- Brian T. Fisher (ORCID: https://orcid.org/0000-0002-8224-4281)
- Naomi Joan Winick (ORCID: https://orcid.org/0000-0002-6636-3870)
- Meret Henry (ORCID: https://orcid.org/0000-0001-5612-3294)
- Kira O'Neil Bona (ORCID: https://orcid.org/0000-0001-5602-7059)
- Catherine C. Aftandilian (ORCID: https://orcid.org/0000-0001-9775-2839)
- Taumoha Ghosh (ORCID: https://orcid.org/0000-0003-3420-3167)
- Victor Wong (ORCID: https://orcid.org/0000-0002-5254-0039)
- Richard Aplenc (ORCID: https://orcid.org/0000-0001-7482-5644)
- Kelly D. Getz
- Arunkumar Modi
- Kelly Maloney
- Craig Lotterman
Institutions
- Boston Children's Hospital (US)
- Lurie Children's Hospital (US)
- Seattle Children's Hospital (US)
- Arkansas Children's Hospital (US)
- Primary Children's Hospital (US)
- Children's Hospital of Philadelphia (US)
- Palo Alto University (US)
- Baylor College of Medicine (US)
- University of Utah (US)
- University of Michigan (US)
- Ochsner Medical Center (US)
- Community Health Systems - Dupont Hospital (US)
- Rady Children's Hospital-San Diego (US)
- Children's Hospital Colorado (US)
- Michigan United (US)
- Children's Hospital of New Orleans (US)
- Children's Hospital of Michigan (US)
- Children's Healthcare of Atlanta (US)
- Texas Children's Hospital (US)
- Boston Children's Museum (US)
- University of Pennsylvania (US)
- The University of Texas Southwestern Medical Center (US)
- University of Colorado Denver (US)
- Stanford University (US)
Publication Details
- Journal
- Pediatric Blood & Cancer
- Published
- 2026-09-21
- DOI
- https://doi.org/10.1002/1545-5017.70678
- Primary Topic
- Neutropenia and Cancer Infections
- Type
- article
- Field-Weighted Citation Impact
- 0.00