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

Frédéric Brillant-Marquis1, Pauline Tibout2, Roseline Thibeault3

  • 1Immunology and allergy Department, CHU de Québec, Québec.

Haematologica
|May 28, 2026
PubMed

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Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...