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Intellectual disability

Gene: HMGXB4

Red List (low evidence)

HMGXB4 (HMG-box containing 4)
EnsemblGeneIds (GRCh38): ENSG00000100281
EnsemblGeneIds (GRCh37): ENSG00000100281
OMIM: 604702, Gene2Phenotype
HMGXB4 is in 1 panel

1 review

Arina Puzriakova (Genomics England Curator)

PMID: 39166056 (2024) report three affected individuals from a single family with ID/GDD, obesity and dysmorphic facial features. WGS revealed a homozygous frameshift variant (c.1193_1196del; p.(Lys398Argfs*25)) in exon 5 of the HMGXB4 gene which completely segregated with disease. RT-qPCR revealed a substantial decrease in the HMGXB4 gene expression in affected individuals as compared to unaffected individuals of the family.

Rating Red for now as only a single family has been identified to date.
Sources: Literature
Created: 18 Mar 2025, 11:47 a.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Intellectual disability, developmental delay, and dysmorphic features

Publications

Details

Mode of Inheritance
BIALLELIC, autosomal or pseudoautosomal
Sources
  • Literature
Phenotypes
  • Intellectual disability, developmental delay, and dysmorphic features
OMIM
604702
Clinvar variants
Variants in HMGXB4
Penetrance
None
Publications
Panels with this gene

History Filter Activity

18 Mar 2025, Gel status: 1

Created, Added New Source, Set mode of inheritance, Set publications, Set Phenotypes

Arina Puzriakova (Genomics England Curator)

gene: HMGXB4 was added gene: HMGXB4 was added to Intellectual disability. Sources: Literature Mode of inheritance for gene: HMGXB4 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: HMGXB4 were set to 39166056 Phenotypes for gene: HMGXB4 were set to Intellectual disability, developmental delay, and dysmorphic features