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RNF216 gene

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

RNF216 gene

The RNF216 gene encodes a protein that regulates the degradation of unwanted proteins, playing a vital role in immune response and cognitive function.

Normal Function

The RNF216 gene provides instructions for making a protein that functions as an E3 ubiquitin ligase. This protein is part of the ubiquitin-proteasome system, which tags damaged or excess proteins with molecules called ubiquitin. This tag signals specialized cell structures called proteasomes to degrade the tagged proteins.

The RNF216 protein helps control the early immune response (inflammation) and regulates the amount of a protein called Arc in nerve cells (neurons). Arc is involved in synaptic plasticity—the ability of connections between neurons to adapt—which is critical for learning and memory.

Health Conditions Related to Genetic Changes

Gordon Holmes syndrome

At least eight RNF216 gene mutations have been found to cause Gordon Holmes syndrome, a rare condition characterized by hypogonadotropic hypogonadism (reduced production of hormones directing sexual development) and cerebellar ataxia (difficulty coordinating movements). Many individuals also experience a decline in intellectual function (dementia).

These mutations impair the ability of the RNF216 protein to tag unneeded proteins for degradation. The resulting impaired breakdown of Arc disrupts normal synaptic connections and plasticity, which likely contributes to the dementia observed in this syndrome. It remains unclear how a lack of RNF216 function leads to hypogonadotropic hypogonadism or cerebellar ataxia.

Other Names for This Gene

  • CAHH
  • E3 ubiquitin-protein ligase RNF216 isoform a
  • E3 ubiquitin-protein ligase RNF216 isoform b
  • RING-type E3 ubiquitin transferase RNF216
  • triad domain-containing protein 3
  • TRIAD3
  • U7I1
  • UBCE7IP1
  • ubiquitin-conjugating enzyme 7-interacting protein 1
  • ZIN
  • zinc finger protein inhibiting NF-kappa-B

Frequently Asked Questions

Early cognitive changes often present as subtle memory lapses, difficulty concentrating, or slower problem‑solving. Over time, these may progress to more pronounced learning difficulties, executive dysfunction, and eventually dementia. Monitoring with neuropsychological testing every 12–18 months helps track progression.
taxia is managed with physical therapy, occupational therapy, and balance training to reduce falls. For hypogonadotropic hypogonadism, hormone replacement therapy (e.g., testosterone in men, estrogen/progesterone in women) can restore puberty and fertility. Regular endocrine evaluation and adjustment of hormone doses are essential.
RNF216‑related Gordon Holmes syndrome is inherited in an autosomal recessive pattern. Both parents are usually carriers, giving each child a 25 % chance of being affected and a 50 % chance of being a carrier. Genetic counseling and carrier testing for relatives can clarify risks and guide family planning.
definitive diagnosis is made by sequencing the RNF216 gene to identify pathogenic variants. Whole‑exome sequencing or targeted gene panels that include RNF216 are commonly used. Once a mutation is found, segregation analysis in the family can confirm inheritance and rule out other causes of ataxia or hypogonadism.
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.