Novel ANKRD17 variants implicate synaptic and mitochondrial disruptions in intellectual disability and autism spectrum disorder.

Publication date: Jul 02, 2025

ANKRD17 has recently been implicated in intellectual disability (ID) and autism spectrum disorder (ASD); however, the underlying molecular mechanisms remain unclear. Using trio whole-exome sequencing (Trio-WES) and chromosomal microarray analysis (CMA), we identified two unrelated cases with novel de novo heterozygous ANKRD17 variants. Case 1 describes a fetus with multiple congenital anomalies, where genetic analysis revealed a microdeletion at 4q13. 3 truncating the ANKRD17 gene. Case 2 involves a 12-year-old male presenting with mild ID and progressive social impairments, associated with a NM_032217. 5: c. 1252 C > T (p. Arg418*) variation in ANKRD17. Our study highlighted in mouse models an association between Ankrd17 haploinsufficiency and deficits in social behavior, spatial learning and memory, as well as elevated anxiety. Furthermore, our studies suggest dysregulation of synaptic proteins and mitochondrial function, along with impaired neural circuits following Ankrd17 knockdown. These results expand the genetic and phenotypic spectrum of ANKRD17-related disorders, underscore the critical role of mitochondrial dysfunction in the pathophysiology of ANKRD17-related ID and ASD.

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Concepts Keywords
Autism ANKRD17 haploinsufficiency
Chromosomal Autism Spectrum Disorder
Models Child
Unrelated Humans
Intellectual Disability
Intellectual Disability (ID)
Male
Mitochondria
Mitochondrial inhibition
Synapses
Synaptic protein abnormalities

Semantics

Type Source Name
disease MESH intellectual disability
disease MESH autism spectrum disorder
disease MESH haploinsufficiency
disease MESH anxiety
disease MESH mitochondrial dysfunction
pathway REACTOME Reproduction
disease MESH Neurodevelopmental Disorders
disease MESH abnormalities
drug DRUGBANK Edetic Acid
drug DRUGBANK Isoflurane
drug DRUGBANK Ethanol
drug DRUGBANK Tromethamine
drug DRUGBANK Sucrose

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