Aspergillus vertebral osteomyelitis in a child with a primary monocyte killing defect: response to GM-CSF therapy

Area of Science:

• Immunology
• Infectious Diseases
• Pediatrics

Background:

• Primary immunodeficiencies can predispose children to severe infections.
• Defective monocyte killing is an extremely rare immunodeficiency.
• Vertebral aspergillosis is a rare and aggressive fungal infection.

Observation:

• A child with defective monocyte killing presented with extensive vertebral aspergillosis.
• The infection involved the vertebral column, mediastinum, pleura, and lung.
• Standard antifungal treatments and granulocyte transfusions were ineffective.

Findings:

• In vitro assays confirmed impaired monocyte killing of pathogens.
• Granulocyte macrophage-colony stimulating factor (GM-CSF) led to dramatic clinical and radiological improvement.
• This case highlights a potential therapeutic role for GM-CSF.

Implications:

• GM-CSF may be a valuable adjunctive therapy for invasive aspergillosis in select immunocompromised patients.
• Further research is needed to evaluate GM-CSF efficacy in invasive aspergillosis.
• This case expands the understanding of rare immunodeficiencies and their management.