Infectious events prior to chemotherapy initiation in children with acute myeloid leukemia

Area of Science:

• Pediatric Oncology
• Infectious Diseases
• Hematology

Background:

• Infectious complications are a significant concern in pediatric acute myeloid leukemia (AML).
• Understanding infection patterns at diagnosis is crucial for timely management.
• The role of neutropenia in early infections in pediatric AML requires clarification.

Purpose of the Study:

• To describe infectious complications in children with AML from healthcare presentation to chemotherapy initiation.
• To analyze how these infections differ based on neutropenia status.

Main Methods:

• Retrospective, population-based cohort study.
• Inclusion of children and adolescents with AML diagnosed and treated at 15 Canadian centers.
• Evaluation of infections occurring between initial healthcare presentation and chemotherapy initiation.

Main Results:

• Out of 328 children, 92 (28.0%) presented with neutropenia.
• Only 3.4% had microbiologically documented infections; bacteremia was rare (4 cases).
• Neutropenia did not influence the infection rate, and no deaths from infection occurred before chemotherapy.

Conclusions:

• Empiric antibiotics may be withheld in well-appearing, febrile, non-neutropenic children with newly diagnosed AML before chemotherapy.
• Further research into biomarkers or clinical scores could identify high-risk children with invasive infections.
• This finding supports a more nuanced approach to managing fever in newly diagnosed pediatric AML patients.