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Case Reports
. 2023 Aug 24:14:1199710.
doi: 10.3389/fpsyt.2023.1199710. eCollection 2023.

Autism spectrum disorder and Coffin-Siris syndrome-Case report

Luka Milutinovic  1 , Roberto Grujicic  1 , Vanja Mandic Maravic  2 , Ivana Joksic  3 , Natasa Ljubomirovic  1 , Milica Pejovic Milovancevic  1
Affiliations
Case Reports

Autism spectrum disorder and Coffin-Siris syndrome-Case report

Luka Milutinovic et al. Front Psychiatry. .

Abstract

Introduction: Autism spectrum disorders (ASDs) are a group of developmental disorders characterized by deficits in social communicative skills and the occurrence of repetitive and/or stereotyped behaviors. Coffin-Siris syndrome (CSS) is classically characterized by aplasia or hypoplasia of the distal phalanx or nail of the fifth and additional digits, developmental or cognitive delay of varying degrees, distinctive facial features, hypotonia, hirsutism/hypertrichosis, and sparse scalp hair. In this study, we present a detailed description of autistic traits in a boy diagnosed with CSS and further discuss their genetic backgrounds.

Case description: An 8-year-old boy with ASD, congenital anomalies, and neurological problems had been diagnosed with Coffin-Siris syndrome after genetic testing. Genetic testing revealed a heterozygous de novo pathogenic variant (class 5) c.1638_1647del in the ARID1B gene that is causative of Coffin-Siris syndrome but also other intellectual disability (ID)-related disorders, including autism. Tests that preceded the diagnoses, as well as congenital anomalies and developmental issues, were further described in an attempt to better present his phenotype.

Conclusion: Both autism and ARID1B-related disorders are on a spectrum. This report points out the importance and necessity of further research regarding the genetic backgrounds of these disorders to understand their complex etiology.

Keywords: ARID1B; Coffin–Siris syndrome; autism spectrum disorders; developmental disorders; neurodevelopment.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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