Tae, Sok-Kun and Ra, Mazlan and Thong, Meow-Keong (2024) Case report: The evolving phenotype of ESCO2 spectrum disorder in a 15-year-old Malaysian child. FRONTIERS IN GENETICS, 14. ISSN 1664-8021, DOI https://doi.org/10.3389/fgene.2023.1286489.
Full text not available from this repository.Abstract
ESCO2 spectrum disorder is an autosomal recessive developmental disorder characterized by growth retardation, symmetrical mesomelic limb malformation, and distinctive facies with microcephaly, with a wide phenotypic continuum that ranges from Roberts syndrome (MIM #268300) at the severe end to SC phocomelia (MIM #269000) at the milder end. ESCO2 encodes a 601-amino acid protein belonging to the Eco1/Ctf7 family of acetyltransferases that is involved in the establishment of sister chromatid cohesion, which is essential for accurate chromosome segregation and genomic stability and thus belongs to a group of disorders called ``cohesinopathies''. We describe a 15-year-old Malaysian female who presented with the characteristic triad of ESCO2 spectrum disorder, with an equivocal chromosomal breakage study and normal karyotyping findings. She was initially suspected to have mosaic Fanconi anemia but whole exome sequencing (WES) showed a likely pathogenic homozygous splice variant c.955 + 2_955+5del in the ESCO2 gene. During the 15-year diagnostic odyssey, she developed type 2 diabetes mellitus, primary ovarian insufficiency, increased optic cup-to-disc ratio with tortuous vessels bilaterally, and an evolving but distinct facial and skin hypopigmentation phenotype. Of note, there was an absence of learning disabilities. Our findings provide further evidence for ESCO2 spectrum disorder in an Asian child and contribute to defining the clinical and radiographic spectrum.
| Item Type: | Article |
|---|---|
| Funders: | Global Genomic Medicine Consortium, Genetic Medicine Unit, University of Malaya Medical Centre, Kuala Lumpur, Malaysia |
| Uncontrolled Keywords: | Roberts syndrome; ESCO2 spectrum disorders; cohesinopathy; ESCO2 gene; Malaysia |
| Subjects: | R Medicine > RJ Pediatrics R Medicine > RJ Pediatrics > Diseases of children and adolescents |
| Divisions: | Faculty of Medicine > Paediatrics Department Universiti Malaya Medical Centre (UMMC) |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 14 Jun 2024 04:05 |
| Last Modified: | 14 Jun 2024 04:05 |
| URI: | http://eprints.um.edu.my/id/eprint/44170 |
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