X-linked immunodeficiency with magnesium defect, EBV infection, and neoplasia (XMEN)
X-linked immunodeficiency with magnesium defect, EBV infection, and neoplasia (XMEN) is seen in boys and is characterized by low CD4 T cells, chronic Epstein-Barr virus (EBV) infections, and lymphoproliferative disorders related to the EBV.
Tricho-hepato-enteric syndrome
Tricho-hepato-enteric syndrome (THES) is a rare, recessive disorder characterized by chronic diarrhea with poor growth, liver disease, hair and facial abnormalities, and immunodeficiency with impaired antibody function and lymphopenia.
TCRa deficiency
TCRa deficiency causes susceptibility to recurrent respiratory tract infections, candidiasis, gastroenteritis, and herpesvirus infections, as well as autoimmune symptoms.
TFR1 deficiency
Deficiency of transferrin receptor 1 (TFR1) is a rare, recessive immunodeficiency that causes hypogammaglobulinemia, defective T cell function, intermittent neutropenia and thrombocytopenia, and mild anemia.
STK4 deficiency
The clinical phenotype for STK4 deficiency includes persistent viral infections and bacterial infections. Other reported features include fungal infections, mild eczema, autoimmune cytopenias, and lymphopenia.
Schimke’s immuno-osseous dysplasia
Schimke’s immuno-osseous dysplasia, an autosomal recessive disorder, is caused by a variant in a gene responsible for chromatin remodeling (SMARCAL1).
RIDDLE syndrome
RIDDLE is short for radiosensitivity, immunodeficiency, dysmorphic features, and learning difficulties. It is an autosomal recessive disorder, in which individuals have difficulty repairing DNA damage sustained by the cells.
RHOH deficiency
RHOH deficiency is an autosomal recessive disorder caused by variants in the Ras homolog gene family member H (RHOH) gene leading to a defect of T cell function.
RelB deficiency
RelB deficiency has been found in a small number of individuals with poor T cell and B cell function in spite of normal lymphocyte numbers.
Purine nucleoside phosphorylase deficiency
Purine nucleotide phosphorylase (PNP) deficiency is a rare recessive disorder resulting in moderate to severe immunodeficiency, with reduced T cell numbers and risk of recurrent infections, as well as autoimmune disease.
