porphyria cutanea tarda

An acute porphyria characterized by painful, blistering skin lesions that develop on sun-exposed skin.

Bloom syndrome

A syndrome characterized by sun sensitivity, short stature, predisposition to the development of cancer and genomic instability.

Cockayne syndrome B

A Cockayne syndrome that is characterized by severe physical and mental retardation, microcephaly, progressive neurologic and retinal degeneration, skeletal abnormalities, gait defects, and sun sensitivity with no increased frequency of cancer, and that has_material_basis_in homozygous or compound heterozygous mutation in the gene encoding the group 6 excision repair cross-complementing protein on chromosome 10q11.

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.

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.