ZTTK syndrome

A syndrome characterized by delayed psychomotor development and intellectual disability that has_material_basis_in heterozygous mutation in the SON gene on chromosome 21q22.

autosomal dominant hypocalcemia 2

An autosomal dominant hypocalcemia that has_material_basis_in heterozygous mutation in the G protein subunit alpha 11 gene (GNA11) on chromosome 19p13.

immunodeficiency 23

A combined T cell and B cells immunodeficiency characterized by marked atopy and autoimmunity caused by increased T(H)2 and T(H)17 cytokine production by CD4(+) T cells, T-cell lymphopenia, reduced memory B-cell numbers, recurrent respiratory and skin infections beginning in early childhood, increased serum IgE, and variable developmental delay or intellectual impairment that has_material_basis_in homozygous or compound heterozygous mutation in the PGM3 gene on chromosome 6q14.1.

pentosuria

An amino acid metabolic disorder characterized by excretion of excess pentose L-xylulose (1-4 g/day) in the urine that has_material_basis_in homozygous or compound heterozygous mutation in DCXR on 17q25.3.

amelogenesis imperfecta type 2A6

An amelogenesis imperfecta that is characterized by enamel of normal thickness that is hypomineralized and has a mottled appearance and that has_material_basis_in homozygous mutation in the G protein-coupled receptor-68 (GPR68) on chromosome 14q32.

immunodeficiency 31B

A primary immunodeficiency disease characterized by impaired cellular responses to interferons A, B, and G resulting increased susceptibility to mycobacteria, Salmonella, and viruses that has_material_basis_in homozygous or compound heterozygous mutation in the STAT1 gene on chromosome 2q32.2.

severe congenital neutropenia 5

A severe congenital neutropenia characterized by neutropenia and neutrophil dysfunction, a lack of response to G-CSF, life-threatening infections, bone marrow fibrosis, and renal extramedullary hematopoiesis that has_material_basis_in homozygous or compound heterozygous mutation in the VPS45 gene on chromosome 1q21.2.

immunodeficiency 43

A primary immunodeficiency disease characterized by recurrent infections, reduced serum concentrations of immunoglobulin G and albumin due to rapid degradation of these proteins, abnormal renal or liver function, and excessive gastrointestinal protein that has_material_basis_in homozygous or compound heterozygous mutation in B2M on chromosome 15q21.1.

histiocytosis-lymphadenopathy plus syndrome

A syndrome characterized by histiocytosis, hyperpigmentation, hypertrichosis, hepatosplenomegaly, heart anomalies, hearing loss, hypogonadism, and reduced height that has_material_basis_in homozygous or compound heterozygous mutation in SLC29A3 on 10q22.1. This syndrome comprises features from 4 histiocytic disorders that were previously considered distinct: Faisalabad histiocytosis, sinus histiocytosis with massive lymphadenopathy, H syndrome, and pigmented hypertrichosis with insulin-dependent diabetes mellitus syndrome.

X-linked mental retardation-hypotonic facies syndrome-1

A syndromic X-linked intellectual disability that is characterized primarily by severe mental retardation, dysmorphic facies, and a highly skewed X-inactivation pattern in carrier women and that has_material_basis_in mutation in the ATRX gene. X-linked mental retardation-hypotonic facies syndrome comprises several syndromes previously reported separately. These include Carpenter-Waziri, Holmes-Gang, and Smith-Fineman-Myers syndromes. X-linked alpha-thalassemia/mental retardation syndrome is an allelic disorder with a similar phenotype with the addition of alpha-thalassemia and Hb H inclusion bodies in erythrocytes.