Autoinflammatory Disorders
Gene: REXO2
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes
Type 1 interferonopathy of childhood, MONDO:0957408, REXO2-related
Female infant of Chinese ancestry, presented at 2 years of age with whole-body rash with histological features of hyperkeratosis, parakeratosis and acanthosis with elongated rete ridges, focal liquefaction and degeneration of the basal layers of epidermis, vascular proliferation in the superficial dermis, infiltration of lymphocytes and eosinophils around small blood vessels in the dermis. She has recurrent infections (frequent and severe pneumonia).
Extensive functional validation demonstrating heterozygous de novo mutation (p.T132A) impairs REXO2’s ability to cleave RNA leading to activation of the dsRNA sensor MDA5 leading to a Type 1 interferonopathy.
Sources: LiteratureCreated: 12 Aug 2024, 12:08 a.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes
type 1 interferonopathy
Publications
Mode of pathogenicity
Other
Gene: rexo2 has been classified as Amber List (Moderate Evidence).
Phenotypes for gene: REXO2 were changed from type 1 interferonopathy to Type 1 interferonopathy of childhood, MONDO:0957408, REXO2-related
Gene: rexo2 has been classified as Amber List (Moderate Evidence).
gene: REXO2 was added gene: REXO2 was added to Systemic Autoinflammatory Disease_Periodic Fever. Sources: Literature Mode of inheritance for gene: REXO2 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: REXO2 were set to PMID: 39107301 Phenotypes for gene: REXO2 were set to type 1 interferonopathy Mode of pathogenicity for gene: REXO2 was set to Other Review for gene: REXO2 was set to AMBER