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Coffin-Siris syndrome (CSS) is a rare genetic condition associated with mutations in genes responsible for the modulation of gene expression and chromatin remodeling. Patients with CSS commonly present with congenital anomalies, intellectual disabilities, and developmental delays. We describe a case of a 28-year-old woman with a confirmed diagnosis of CSS and mutation who presents with multiple schwannomas and an intra-abdominal neurofibroma. The patient underwent embolization and resection of an enlarging, symptomatic schwannoma of her left medial upper arm. In detailing the patient's presentation, this case report underscores the association between mutations, CSS, and tumorigenesis.
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http://dx.doi.org/10.7759/cureus.67333 | DOI Listing |
Cureus
July 2025
Department of Pediatrics, Armed Forces Hospital Southern Region, Khamis Mushait, SAU.
Coffin-Siris syndrome (CSS) is a rare genetic disorder characterized by underdeveloped toenails or fingernails, developmental delays, and intellectual disability, among other characteristics. The clinical manifestations can vary significantly. We present a case involving a Saudi girl who had global developmental delay, hypertrichosis, and subtle dysmorphic traits since birth but remained undiagnosed until the age of nine.
View Article and Find Full Text PDFG3 (Bethesda)
August 2025
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.
Coffin-Siris syndrome (CSS) is a rare human genetic disorder that is characterized by developmental delay, fifth digit abnormalities, and craniofacial defects. Heterozygous mutations in two SoxC proteins, SOX4 and SOX11, are associated with this disorder. C.
View Article and Find Full Text PDFFam Cancer
August 2025
Institute of Medical Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK.
SMARCB1 is a core unit of the BAF chromatin remodelling complex and its functional impairment interferes with the self-renewal and pluripotency of stem cells, lineage commitment, cellular identity and differentiation. SMARCB1 is also an important tumour suppressor gene and somatic SMARCB1 pathogenic variants (PVs) have been detected in ~ 5% of all human cancers. Additionally, germline SMARCB1 PVs have been identified in patients with conditions as clinically diverse as Rhabdoid Tumour Predisposition Syndrome type 1 (RTPS1), schwannomatosis and neurodevelopmental disorders such as Coffin-Siris syndrome (CSS).
View Article and Find Full Text PDFAm J Ophthalmol Case Rep
September 2025
Division of Ophthalmology, University of California Los Angeles, Los Angeles, CA, USA.
Purpose: To report a case of delayed diagnosis of glaucoma in a patient with Coffin-Siris Syndrome (CSS) who did not have any other predisposing risk factors or typical anterior segment signs of congenital glaucoma.
Observations: A 27-year-old male with CSS was referred to the ophthalmology department for evaluation of strabismus. Past ocular history included a diagnosis of right morning glory anomaly and bilateral hyperopic astigmatism.
Front Genet
July 2025
Center for Medical Genetics, Jiangmen Maternal and Child Health Care Hospital, Jiangmen, China.
Introduction: Neurodevelopmental disorder (NDDs) such as intellectual disability, developmental delay encompasses a diverse group of conditions caused by the disruptions in the central nervous system (CNS) during development. Variants in the SWItch/Sucrose non-fermentable (SWI/SNF) complex genes are significant contributors to NDDs. ARID2, ARID1B, and SMARCC2 are important subunits of the SWI/SNF complex, and their variants can also result in Coffin-Siris syndrome (CSS), a type of NDDs characterized by CNS disorders, global developmental delay, visual/hearing impairment, distinct facial features, and congenital heart disease (CHD).
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