RNU6 Retinitis Pigmentosa
RNU6 is a small nuclear RNA gene that works alongside RNU4-2 in the spliceosome, the cellular machine that processes genetic instructions in the retina. Variants in RNU6 were identified in 2026 as a newly recognized genetic cause of retinitis pigmentosa (RP), an inherited disease that causes progressive vision loss. This page explains what an RNU6 diagnosis means, how it is found through genetic testing, what a variant of uncertain significance (VUS) is, and how affected families can connect with research.
RNU6 Retinitis Pigmentosa
Medically reviewed by Allan Jacob, MD — co-author of the study identifying RNU4-2 and RNU6 retinal disease. Last reviewed July 2026.
Also known as: RNU6 · RNU6-1 · RNU6-2 · RNU6-8 · RNU6-9 · RNU6 gene · RNU6 retinal disease · RNU6 retinitis pigmentosa.
About the discovery
RNU4-2 and RNU6 retinal disease was identified in a 2026 study published in Nature Genetics. CURE4/6's Allan Jacob, MD is a co-author, and the study's lead authors serve on our Scientific & Medical Advisory Board. The discovery gave a name — and a research path — to families who had searched for a diagnosis for years.
Frequently asked questions
- Is RNU4-2 / RNU6 retinitis pigmentosa inherited?
- Sometimes it is inherited but sometimes it occurs de novo which is a genetic change that is new in a person and was not inherited from either parent. It often affects several members of the same family across generations.
- Will it cause total blindness?
- RP causes gradual, progressive vision loss, usually beginning with night vision and side (peripheral) vision. Many people keep some central vision for a long time. How much vision is affected, and how quickly, varies from person to person and family to family, so it does not follow the same course for everyone.
- I was told I carry a "variant of uncertain significance" (VUS). What does that mean?
- A VUS is a genetic change that has been found but not yet confirmed as either disease-causing or harmless — there isn't enough evidence yet to classify it. It is not a final answer. As more affected families are identified and more data is gathered, many of these variants are eventually reclassified. Joining the registry helps build the evidence that can resolve them.
- Can other members of my family be affected?
- Possibly. Because these variants are dominant, close blood relatives may carry the same genetic change. Some carriers lose vision while others have few or no symptoms. A retina specialist or genetic counselor can advise on testing for family members.
- Is there a treatment yet?
- Not yet. This disease was only identified in 2026 and research is at an early stage. CURE4/6 was created to accelerate that research toward treatments, and the registry is how affected families stay connected to new studies and clinical trials as they become available.
- How do I take part?
- The CURE4/6 registry is opening soon — leave your email to be notified. (Once it is live, this becomes: Visit cure46.org and choose Join the Registry. It takes about 10 minutes, is private and secure, and you can register anonymously.)
Stay connected
The CURE4/6 registry is opening soon — leave your email to be notified.
Related: RNU4-2 retinitis pigmentosa · About the disease · The registry