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GTF2IRD1 gene
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Gene

GTF2IRD1 gene

The GTF2IRD1 gene encodes a transcription factor that plays a significant role in gene regulation, particularly in the brain, skeletal muscles, and craniofacial development.

Normal Function

The GTF2IRD1 gene provides instructions for making a protein that acts as a transcription factor. By interacting with specific regions of DNA and other proteins, it helps turn genes on or off. While its exact functions are still being researched, the GTF2IRD1 protein is active in many tissues and is considered particularly important for regulating genes in the brain and in skeletal muscles used for movement. It also appears to play a role in the development of tissues in the head and face (craniofacial development).

Health Conditions Related to Genetic Changes

Williams syndrome

Williams syndrome is a developmental disorder caused by a deletion in a region of chromosome 7 that includes the GTF2IRD1 gene. Individuals with this condition are missing one copy of the gene in each cell. This deletion is associated with several characteristic features of the syndrome, including:

  • Distinctive facial features
  • Personality characteristics, such as increased sociability
  • Difficulties with visual-spatial tasks, such as writing and drawing

Researchers are currently investigating how the loss of this specific gene contributes to these clinical features.

Frequently Asked Questions

While the most prominent effects are neurocognitive and craniofacial, GTF2IRD1 is expressed in skeletal muscle and other tissues, contributing to the mild connective‑tissue abnormalities seen in Williams syndrome (e.g., supravalvular aortic stenosis, joint laxity). Regular cardiac evaluation (echocardiogram) and musculoskeletal monitoring are part of standard care, even though the primary driver of these issues is the broader 7q11.23 deletion rather than GTF2IRD1 alone.
GTF2IRD1 encodes a transcription factor that regulates genes involved in craniofacial development. When one copy is missing, the balance of signaling pathways that shape bone and soft‑tissue growth is disrupted, leading to the characteristic “elfin” facial appearance—broad forehead, short nose with a upturned tip, and full lips. The exact downstream targets are still being studied, but the gene’s role in facial morphogenesis is well supported.
Yes. Early occupational and visual‑motor therapy can improve fine‑motor coordination and spatial reasoning. Structured programs that use block building, puzzle solving, and computer‑based spatial training have shown benefit. Incorporating multisensory cues (tactile, auditory) helps compensate for the underlying neural circuitry affected by GTF2IRD1 haploinsufficiency. Regular reassessment guides therapy intensity.
The deletion is identified by chromosomal microarray analysis (CMA) or high‑resolution SNP array, which can pinpoint the exact size of the 7q11.23 loss. Once confirmed, parental testing (usually by the same CMA platform) determines whether the deletion arose de novo (most common) or is inherited from a parent with a balanced rearrangement. If a parent carries the same deletion, they may have milder features and have a 50 % recurrence risk for future children; thus, testing is recommended.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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