GATA3 Mutations in Hypoparathyroidism, Deafness, and Renal Dysplasia Syndrome

Hypoparathyroidism, Deafness, and Renal Dysplasia (HDR) syndrome is an autosomal dominant disorder arising from mutations in the GATA3 gene, which encodes a zinc finger transcription factor crucial for the development and function of the parathyroid glands, inner ear and kidneys. Clinically, individuals present with hypocalcaemia due to parathyroid hormone deficiency, sensorineural hearing loss and a spectrum of renal anomalies ranging from dysplasia to functional impairment. The pathogenic variants span missense and nonsense mutations, frameshifts and splice site alterations, resulting in GATA3 haploinsufficiency or dominant-negative effects. Molecular studies have elucidated how disruptions in the dual zinc finger domains compromise DNA binding, protein–protein interactions and transcriptional regulation, yielding variable phenotypic expression even within families. Advances in genetic analysis, including next-generation sequencing and functional assays, have sharpened diagnostic accuracy and deepened insight into genotype–phenotype correlations, informing clinical management and genetic counselling worldwide.

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GATA3 Mutations in Hypoparathyroidism, Deafness, and Renal Dysplasia Syndrome publication trend

The graph below shows the total number of articles in gata3 mutations in hypoparathyroidism, deafness, and renal dysplasia syndrome across all publications each year (not limited to Nature Index journals).

Technical terms

Haploinsufficiency: A condition in which a single functional copy of a gene does not produce sufficient protein to sustain normal function.

Zinc finger transcription factor: A protein that uses zinc-coordinated finger-like domains to bind DNA and regulate gene expression.

Pre-mRNA splicing: The process by which non-coding introns are removed and exons joined to form mature messenger RNA.

Cryptic splice site: A non-canonical site within pre-mRNA that is normally unused but may be activated by mutation, leading to aberrant splicing.

Minigene assay: An experimental system using a simplified gene construct to study the effects of specific mutations on RNA splicing.

Genotype–phenotype correlation: The relationship between specific genetic variants and the resultant clinical manifestations of a disorder.

References

1. Hypoparathyroidism, deafness and renal dysplasia syndrome caused by a GATA3 splice site mutation leading to the activation of a cryptic splice site. Frontiers in Endocrinology (2023).
2. Characterization of GATA3 Mutations in the Hypoparathyroidism, Deafness, and Renal Dysplasia (HDR) Syndrome*. Journal of Biological Chemistry (2004).
3. Primary Hypoparathyroidism Presenting as Idiopathic Intracranial Hypertension in a Patient With Barakat Syndrome. Cureus (2022).
4. A GATA3 gene mutation that causes incorrect splicing and HDR syndrome: a case study and literature review. Frontiers in Genetics (2023).