Research and News
Published research on RNU2-2, news coverage, community updates and videos, collected in one place. Each research paper has a short plain-language summary.
Three papers in Nature Genetics describe recessive RNU2-2 syndrome
Together they show that the recessive form is the most common known recessive neurodevelopmental disorder, and that the dominant and recessive forms are distinct conditions. One of the papers cites renu2.org and credits it with naming the condition.
2026
3 papersBiallelic variants in RNU2-2 cause the most prevalent known recessive neurodevelopmental disorder
In plain language: Recessive RNU2-2 syndrome accounts for about 1 in 10 families whose recessive neurodevelopmental disorder can currently be diagnosed by genetic sequencing. This paper cites renu2.org.
Greene D, Mendez R, Lees J, Barbosa M, et al. Nat Genet (2026). doi:10.1038/s41588-026-02539-5
Biallelic variants in RNU2-2 cause a remarkably frequent developmental and epileptic encephalopathy
In plain language: Using data from the 100,000 Genomes Project, the recessive form was by far the most common recessive diagnosis in the group studied. The dominant and recessive forms are genetically and clinically different.
Jackson A, Blakes AJM, Alhaddad B, Henry OJ, et al. Nat Genet (2026). doi:10.1038/s41588-026-02551-9
Systematic analysis of snRNA genes reveals frequent RNU2-2 variants in dominant and recessive developmental and epileptic encephalopathies
In plain language: The largest group studied so far: 141 people from 122 families in France. The recessive form was at least twice as common as the dominant form.
Leitão E, Santini A, Cogné B, Essid M, et al. Nat Genet (2026). doi:10.1038/s41588-026-02547-5
2025
3 papersPathogenic variants in RNU2-2, a non-coding spliceosomal RNA, cause a distinctive developmental and epileptic encephalopathy
In plain language: A separate clinical study. RNU2-2 changes were found in 4 of 672 people with unexplained developmental and epileptic encephalopathy, and one more patient was added later. It describes their clinical and EEG (brain wave) findings.
Chiu et al. Ann Neurol (2026). doi:10.1002/ana.78071
Analysis of R-loop forming regions identifies RNU2-2 and RNU5B-1 as neurodevelopmental disorder genes
In plain language: A second research team independently confirmed RNU2-2 as a cause of neurodevelopmental disorders and identified a related gene, RNU5B-1.
Jackson A, Thaker N, Blakes A, Banka S. Nat Genet 57, 1362–1366 (2025). doi:10.1038/s41588-025-02209-y
Mutations in the small nuclear RNA gene RNU2-2 cause a severe neurodevelopmental disorder with prominent epilepsy
In plain language: The first paper to show that changes in RNU2-2 cause a neurodevelopmental disorder. It describes 25 people with features including epilepsy, developmental delay and low muscle tone.
Greene D, De Wispelaere K, Lees J, et al. Nat Genet 57, 1367–1373 (2025). doi:10.1038/s41588-025-02159-5
2026
7 articles2025
13 articlesRNU2-2 mutations cause severe neurodevelopmental disorder with epilepsy
An expert discussion of the discovery and what it means for diagnosis and for families.
More videos will be added as they become available. Have a video to share? Email info@renu2.org.