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BabyScreen+ newborn screening v1.114 MAGT1 Tommy Li Added phenotypes Immunodeficiency, X-linked, with magnesium defect, Epstein-Barr virus infection and neoplasia (MIM# 300853) for gene: MAGT1
Publications for gene MAGT1 were updated from 31036665; 31714901 to 31714901; 31036665
BabyScreen+ newborn screening v0.2025 MAGT1 Zornitza Stark Marked gene: MAGT1 as ready
BabyScreen+ newborn screening v0.2025 MAGT1 Zornitza Stark Gene: magt1 has been classified as Green List (High Evidence).
BabyScreen+ newborn screening v0.2025 MAGT1 Zornitza Stark Classified gene: MAGT1 as Green List (high evidence)
BabyScreen+ newborn screening v0.2025 MAGT1 Zornitza Stark Gene: magt1 has been classified as Green List (High Evidence).
BabyScreen+ newborn screening v0.2024 MAGT1 Zornitza Stark gene: MAGT1 was added
gene: MAGT1 was added to Baby Screen+ newborn screening. Sources: Expert list
treatable, immunological tags were added to gene: MAGT1.
Mode of inheritance for gene: MAGT1 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: MAGT1 were set to 31036665; 31714901
Phenotypes for gene: MAGT1 were set to Immunodeficiency, X-linked, with magnesium defect, Epstein-Barr virus infection and neoplasia (MIM# 300853)
Review for gene: MAGT1 was set to GREEN
Added comment: XMEN is an X-linked recessive immunodeficiency characterized by CD4 lymphopenia, severe chronic viral infections, and defective T-lymphocyte activation. Affected individuals have chronic Epstein-Barr virus (EBV) infection and are susceptible to the development of EBV-associated B-cell lymphoproliferative disorders.

Variable age of onset, including in early childhood.

Treatment: Mg supplementation; IVIG, BMT.

Non-genetic confirmatory testing: immunoglobulin levels, T and B Lymphocyte and Natural Killer Cell Profile, Carbohydrate deficient glycosylation profile
Sources: Expert list