Major histocompatibility complex class II deficiency: A rare inborn error immunity disorder

Ha Phuong Anh, Dang Thi Ha, Tran Thi Thuy Hanh, Nguyen Thi Van Anh, Nguyen Thi Thanh Huong, Nguyen Thanh Binh, Cao Viet Tung, Nguyen Ngoc Quynh Le

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Abstract

Major histocompatibility complex class II deficiency is a rare inborn error of immunity disorder characterized by recurrent respiratory and gastrointestinal infections, malnutrition, and early death. This syndrome is caused by mutations in transcription regulators of the MHC II gene. Genetic tests revealed a compound heterozygous mutation in CIITA gene; consequently, the child was diagnosed with class II histocompatibility complex deficiency. He was treated aggressively with antibiotics, antifungals, immunoglobulins replacement therapy, and hematopoietic stem cell transplantation, but passed away despite all treatment. Clinicians should be aware of inborn errors of immunity in children with early-onset recurrent infections in the first year of life.

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References

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