ELP2 is a novel gene implicated in neurodevelopmental disabilities

Area of Science:

• Molecular Biology
• Genetics
• Neuroscience

Background:

• The Elongator complex, comprising ELP1-6 subunits, is crucial for gene transcription, histone acetylation, and tRNA modification.
• While Elongator complex involvement in intellectual disability (ID) is known, specific clinical data on ELP2 variants remain scarce.

Observation:

• Two brothers presented with severe ID, spastic diplegia, and self-injurious behaviors, remaining undiagnosed for over two decades.
• Whole exome sequencing identified compound heterozygous missense variants in the ELP2 gene in both affected individuals.

Findings:

• The identified ELP2 variants were classified as likely pathogenic.
• This discovery links specific ELP2 mutations to a severe neurodevelopmental disorder phenotype.

Implications:

• This research expands the understanding of ELP2-related disorders and their clinical spectrum.
• It provides a potential genetic diagnosis for patients with severe ID and neurological symptoms previously lacking a clear cause.
• Highlights the importance of investigating ELP2 in undiagnosed neurodevelopmental conditions.