Case Reports

Atypical presentation of RAG1-associated SCID: diagnostic challenges beyond infections and lymphocyte count

Immunology and allergy Department, CHU de Québec, Québec
Department of pediatrics, Faculty of Medicine, Laval University, Québec, Canada; Division of Pediatric Hemato-oncology, CHU de Québec, Québec
Department of pediatrics, Faculty of Medicine, Laval University, Québec, Canada; Division of Pediatric Hemato-oncology, CHU de Québec, Québec, Canada; Division of Pediatric Infectious Diseases, CHU de Québec, Québec
Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montréal, Québec
Division of Pediatric Hemato-oncology, CHU Ste-Justine, Montréal
Department of pediatrics, Faculty of Medicine, Laval University, Québec, Canada; Division of Pediatric Hemato-oncology, CHU de Québec, Québec, Canada; Division of Pediatric Infectious Diseases, CHU de Québec, Québec, Canada; Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montréal, Québec, Canada; Division of Pediatric Hemato-oncology, CHU Ste-Justine, Montréal, Canada; Division of Pediatric Intensive Care Medicine, CHU de Québec, Québec
Immunology and allergy Department, CHU de Québec, Québec, Canada; Department of pediatrics, Faculty of Medicine, Laval University, Québec, Canada; Division of Pediatric Hemato-oncology, CHU de Québec, Québec, Canada; Division of Pediatric Infectious Diseases, CHU de Québec, Québec, Canada; Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montréal, Québec, Canada; Division of Pediatric Hemato-oncology, CHU Ste-Justine, Montréal, Canada; Division of Pediatric Intensive Care Medicine, CHU de Québec, Québec, Canada; Division of Specialized Medicine of the Faculty of Medicine, Laval University, Québec, Canada; CHU de Quebec Research center, Laval University, Québec
Haematologica Early view May 28, 2026 https://doi.org/10.3324/haematol.2025.288435