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Severe combined immunodeficiency in a Malaysian child
1Dept of Immunology, School of Medicine, Universiti Sains Malaysia, Kelantan.
Abstract:
A 3-month-old Malay male infant presented with multiple infections (candidiasis, Pseudomonas aeruginosa, Cytomegalovirus), persistent pneumonia, intractable diarrhoea and failure to thrive. There was lymphopaenia affecting both T and B subsets. He developed Graft versus Host disease weeks following transfusion with non irradiated blood. In spite of aggressive microbicidal and supportive therapy including regular immunoglobulin infusions, the child succumbed to infection before a bone marrow transplant could be instituted.
Insights
A severe T and B cell lymphopenia led to recurrent infections and Graft versus Host disease in an infant. Despite intensive care, the infant succumbed to infection before a bone marrow transplant.
Area of Science:
- Immunology
- Pediatric Infectious Diseases
- Hematology
Background:
- Severe combined immunodeficiency (SCID) or other primary immunodeficiencies (PIDs) can present in early infancy.
- Early diagnosis and management are crucial for improving outcomes in infants with PIDs.
Observation:
- A 3-month-old infant experienced recurrent infections (Candida, Pseudomonas aeruginosa, Cytomegalovirus), persistent pneumonia, intractable diarrhea, and failure to thrive.
- Laboratory findings revealed lymphopenia affecting both T and B lymphocyte subsets.
- The infant developed Graft versus Host disease following a transfusion with non-irradiated blood products.
Findings:
- The infant's presentation was consistent with a severe T and B cell lymphopenia, indicative of a profound underlying immunodeficiency.
- The development of Graft versus Host disease highlighted the compromised immune system and the risks associated with blood product transfusions in such patients.
- Despite aggressive antimicrobial therapy, immunoglobulin infusions, and supportive care, the infant's condition deteriorated due to overwhelming infection.
Implications:
- This case underscores the critical need for early recognition and diagnosis of primary immunodeficiencies in infants presenting with severe or recurrent infections.
- It highlights the potential complications, such as Graft versus Host disease, associated with blood product transfusions in immunocompromised infants.
- The case emphasizes the challenges in managing severe PIDs and the importance of timely hematopoietic stem cell transplantation as a definitive treatment option.