Spondylo-ocular syndrome (SOS) is a rare autosomal recessive disorder and affects primarily ocular and spinal tissues. This case report presented an Omani child with a novel homozygous variant, c.2070 G > A (p.Trp690Ter) in associated with SOS for the first time. Oman and other Middle East countries have a high consanguine marriage rate. Our case report will increase knowledge of SOS syndrome to be able to provide genetic diagnosis and counseling for other family members and families as well as prenatal diagnostics for the future pregnancies.
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http://dx.doi.org/10.1055/s-0040-1715113 | DOI Listing |
Biomedicines
March 2024
Institut für Laboratoriums- und Transfusionsmedizin, Herz- und Diabeteszentrum Nordrhein-Westfalen, Universitätsklinik der Ruhr-Universität Bochum, Georgstraße 11, 32545 Bad Oeynhausen, Germany.
Desbuquois dysplasia type 2 (DBQD2) and spondylo-ocular syndrome (SOS) are autosomal recessive disorders affecting the extracellular matrix (ECM) and categorized as glycosaminoglycan (GAG) linkeropathies. Linkeropathies result from mutations within glycosyltransferases involved in the synthesis of the tetrasaccharide linker, a linker between the core protein of proteoglycan (PG) and GAG. DBQD2 and SOS are caused by the isolated mutations of the xylosyltransferase (XT) isoforms.
View Article and Find Full Text PDFFunct Integr Genomics
May 2023
Fisheries College of Jimei University, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Xiamen, 361021, Fujian, China.
pax6 is a canonic master gene for eye formation. Knockout of pax6 affects the development of craniofacial skeleton and eye in mice. Whether pax6 affects the development of spinal bone has not been reported yet.
View Article and Find Full Text PDFAm J Med Genet A
June 2023
Department of Pediatric Genetics, University of Health Sciences, Ankara City Hospital, Ankara, Turkey.
Spondylo-ocular syndrome is a rare autosomal recessive disorder characterized by generalized osteoporosis, hearing loss, visual impairment due to cataract, and platyspondyly. Previous studies have revealed that the syndrome is caused by pathogenic variants in the XYLT2 gene. A patient with spondylo-ocular syndrome and two heterozygous pathogenic variant in the XYLT2 gene in compound state are described here.
View Article and Find Full Text PDFJ Pediatr Genet
March 2022
Department of Clinical Genetics & Counseling, National Genetics Centre, Royal Hospital Muscat, Ministry of Health, Muscat, Sultanate of Oman.
Spondylo-ocular syndrome (SOS) is a rare autosomal recessive disorder and affects primarily ocular and spinal tissues. This case report presented an Omani child with a novel homozygous variant, c.2070 G > A (p.
View Article and Find Full Text PDFGenes (Basel)
August 2019
Division of Biology and Genetics, Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy.
The term linkeropathies (LKs) refers to a group of rare heritable connective tissue disorders, characterized by a variable degree of short stature, skeletal dysplasia, joint laxity, cutaneous anomalies, dysmorphism, heart malformation, and developmental delay. The LK genes encode for enzymes that add glycosaminoglycan chains onto proteoglycans via a common tetrasaccharide linker region. Biallelic variants in XYLT1 and XYLT2, encoding xylosyltransferases, are associated with Desbuquois dysplasia type 2 and spondylo-ocular syndrome, respectively.
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