AUTS2-related syndrome: Insights from a large European cohort

Lorenzo Loberti, Loredaria Adamo, Enrica Antolini, Giulia Casamassima, Anne Destrèe, Nicola Brunetti-Pierri, David Genevieve, Philippe Christophe, Christine Coubes, Hilde Van Esch, Theresia Herget, Fanny Kortüm, Jasmin Lisfeld, Anna Charlotte Möllring, Martin Zenker, Jonathan Levy, Laurence Perrin, Anne Claude Tabet, Anna Maruani, Arthur SorlinDaniel Stieber, Lucas Herissant, Karin Dahan, Lorenzo Sinibaldi, Rossella Capolino, Maria Lisa Dentici, Bruno Dallapiccola, Antonio Novelli, Livia Garavelli, Stefano Giuseppe Caraffi, Gianluca Piatelli, Irene Valenzuela, Maria Cristina Digilio, Roseline Caumes, Cordula Knopp, Karolina Chwiałkowska, Aleksandra Jezela-Stanek, Miroslaw Kwasniewski, Urszula Korotko, Ewelina Gorzałczyńska, Roberto Canitano, Salvatore Grosso, Elisa Rahikkala, Larissa Mattern, Miriam Elbracht, Orsetta Zuffardi, Valentina Caputo, Benedetta Toschi, Gea Beunders, Lisette Leeuwen, Mariet W. Elting, Liselot van der Laan, Marjoleine F. Broekema, Alexander J. Groffen, Jiddeke M. van de Kamp, Mieke M. van Haelst, Marielle Alders, Salvatore Pietro Mauro, Francesca De Razza, Dora Varvara, Johanna Kick, Harald Gaspar, Dominique Braun, Eva Lausberg, Andrea Maier, Valentin Ruault, Rita Genesio, Marco Tartaglia, Rossella Tita, Mirella Bruttini, Ilaria Longo, Margherita Baldassarri, Maria Antonietta Mencarelli, Alessandra Renieri, Anna Maria Pinto*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.

Original languageEnglish
Article number101375
JournalGenetics in Medicine
Volume27
Issue number6
Early online date12 Feb 2025
DOIs
Publication statusE-pub ahead of print - 12 Feb 2025
Externally publishedYes

Keywords

  • AUTS2
  • AUTS2-syndrome
  • Dysmorphology
  • Genotype-phenotype
  • Neurodevelopmental disorder

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