Identification of a de novo FOXP1 mutation and incidental discovery of inherited genetic variants contributing to a case of autism spectrum disorder and epilepsy. Issue 7 (20th May 2019)

• Record Type: Journal Article
• Authors: Jay, Kristy; Mitra, Amit; Harding, Taylor; Matthes, David; Van Ness, Brian
• Is Part Of: Molecular genetics & genomic medicine. Volume 7:Issue 7(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-20
• Subjects: COMT -- FOXP1 -- SLC6A4 -- structural variants -- whole genome/exome sequencing; Medical genetics -- Periodicals; Genomics -- Periodicals; 616.042
• DOI: 10.1002/mgg3.751
• Languages: English
• ISSNs: 2324-9269

Abstract

Abstract: Background: Autism spectrum disorder is commonly co‐diagnosed intellectual disability, language disorder, anxiety, and epilepsy, however, symptom management is difficult due to the complex genetic nature of ASD. Methods: We present a next‐generation sequencing‐based case study with both de novo and inherited genetic variants and highlight the impact of structural variants on post‐translational regulation of protein expression. Since management of symptoms has classically been through pharmaceutical therapies, a pharmacogenomics screen was also utilized to determine possible drug/gene interactions. Results: A de novo variant was identified within the FOXP1 3′ untranslated regulatory region using exome sequencing. Additionally, inherited variants that likely contribute to the current and potential future traits were identified within the COMT, SLC6A4, CYP2C19, and CYP2D6 genes. Conclusion: This study aims to elucidate how a collection of variant genotypes could potentially impact neural development resulting in a unique phenotype including ASD and epilepsy. Each gene's contribution to neural development is assessed, and the interplay of these genotypes is discussed. The results highlight the utility of exome sequencing in conjunction with pharmacogenomics screening when evaluating possible causes of and therapeutic treatments for ASD‐related symptoms. Abstract : In this study we present a case report describing a de novo mutation in a repeat sequence of the 3'UTR region of the FOXP1 gene and correlate its likely impact on RNA secondary structure. Additionally, inherited variations were identified that likely add phenotypic complexity in genes associated with development as well as drug responses. Thus, these results highlight the importance of personalized genome sequencing to identify variations contributing to developmental disabilities and potential drug therapies.