AUTS2-related syndrome: Insights from a large European cohort.

(Genetics in medicine : official journal of the American College of Medical Genetics, v27.6:101375)

Purpose

AUTS2-related syndrome is characterized by developmental delay, autism spectrum disorder, and intellectual disability. From alternative promoters, AUTS2 encodes 2 distinct long and short isoforms encoding a putative transcriptional activator.

Methods

Through a European collaborative study, we collected clinical and genotype data on the largest AUTS2-related syndrome cohort of 58 patients harboring genomic rearrangements or single-nucleotide variants (SNVs).

Results

Pathogenic SNVs were recurrently found in individuals from different countries, suggesting mutational hotspots. Independent of the underlying defect at the AUTS2 locus, we observed that autistic behavior, hyperactivity, learning difficulties, and speech delay are common features of AUTS2-related syndrome. Among patients with SNVs, individuals carrying pathogenic variants affecting both longer and shorter AUTS2 transcripts showed a recognizable phenotype with microcephaly, brachycephaly, microretrognathia, broad nasal base, and anteverted nares. Behavioral disorders were more common in patients with variants affecting only the longer isoform. Arthrogryposis and stiff movements were only observed in patients with SNVs.

Conclusion

This study provides a comprehensive clinical characterization of AUTS2-related syndrome, reveals few genotype-phenotype correlations, and suggests that the disruption of the 2 distinct AUTS2 transcripts has a different impact on the clinical phenotype.

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Overview publication

Title	AUTS2-related syndrome: Insights from a large European cohort.
Date	2025-02-12
Issue name	Genetics in medicine : official journal of the American College of Medical Genetics
Issue number	v27.6:101375
DOI	10.1016/j.gim.2025.101375
PubMed	39953909
Authors	Loberti L, Adamo L, Antolini E, Casamassima G, Destrèe A, Brunetti-Pierri N, Genevieve D, Christophe P, Coubes C, Van Esch H, Herget T, Kortüm F, Lisfeld J, Möllring AC, Zenker M, Levy J, Perrin L, Tabet AC, Maruani A, Sorlin A, Stieber D, Herissant L, Dahan K, Sinibaldi L, Capolino R, Dentici ML, Dallapiccola B, Novelli A, Garavelli L, Caraffi SG, Piatelli G, Valenzuela I, Digilio MC, Caumes R, Knopp C, Chwiałkowska K, Jezela-Stanek A, Kwasniewski M, Korotko U, Gorzałczyńska E, Canitano R, Grosso S, Rahikkala E, Mattern L, Elbracht M, Zuffardi O, Caputo V, Toschi B, Beunders G, Leeuwen L, Elting MW, van der Laan L, Broekema MF, Groffen AJ, van de Kamp JM, van Haelst MM, Alders M, Mauro SP, De Razza F, Varvara D, Kick J, Gaspar H, Braun D, Lausberg E, Maier A, Ruault V, Genesio R, Tartaglia M, Tita R, Bruttini M, Longo I, Baldassarri M, Mencarelli MA, Renieri A & Pinto AM
Keywords	AUTS2, AUTS2-syndrome, Dysmorphology, Genotype-phenotype, Neurodevelopmental disorder
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