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A Cohesin Subunit Variant Identified from a Peripheral Sclerocornea Pedigree.
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- Author(s): Zhang BN;Zhang BN; Chan TCY; Chan TCY; Tam POS; Tam POS; Liu Y; Liu Y; Pang CP; Pang CP; Jhanji V; Jhanji V; Chen LJ; Chen LJ; Chu WK; Chu WK; Chu WK
- Source:
Disease markers [Dis Markers] 2019 Nov 12; Vol. 2019, pp. 8781524. Date of Electronic Publication: 2019 Nov 12 (Print Publication: 2019).- Publication Type:
Journal Article- Language:
English - Source:
- Additional Information
- Source: Publisher: Hindawi Pub. Corp Country of Publication: United States NLM ID: 8604127 Publication Model: eCollection Cited Medium: Internet ISSN: 1875-8630 (Electronic) Linking ISSN: 02780240 NLM ISO Abbreviation: Dis Markers Subsets: MEDLINE
- Publication Information: Publication: 2015- : New York, NY : Hindawi Pub. Corp.
Original Publication: Chichester ; New York : Wiley, c1983- - Subject Terms: Mutation*; Biomarkers/*analysis ; Cell Cycle Proteins/*genetics ; Cornea/*abnormalities ; Cornea/*pathology ; Corneal Diseases/*genetics ; Corneal Diseases/*pathology ; DNA-Binding Proteins/*genetics; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Cells, Cultured ; Child ; Cornea/metabolism ; Female ; Follow-Up Studies ; Humans ; Lymphocytes/metabolism ; Lymphocytes/pathology ; Male ; Middle Aged ; Pedigree ; Prognosis ; Protein Subunits ; Retrospective Studies ; Young Adult
- Abstract: Background: Sclerocornea is a rare congenital disorder characterized with the opacification of the cornea. Here, we report a nonconsanguineous Chinese family with multiple peripheral sclerocornea patients spanning across three generations inherited in an autosomal dominant manner.
Methods: This is a retrospective case series of a peripheral sclerocornea pedigree. Comprehensive ophthalmic examinations were conducted and assessed on 14 pedigree members. Whole-exome sequencing was used to identify the genetic alterations in the affected pedigree members. Lymphoblastoid cell lines (LCLs) were established using blood samples from the family members. Functional tests were performed with these cell lines.
Results: Six affected and eight unaffected members of a family with peripheral sclerocornea were examined. All affected individuals showed features of scleralization over the peripheral cornea of both eyes. Mean horizontal and vertical corneal diameter were found significantly decreased in the affected members. Significant differences were also observed on the mean apex pachymetry between affected and unaffected subjects. These ophthalmic parameters did not resemble that of cornea plana. A RAD21 C1348T variant was identified by whole-exome sequencing. Although this variant causes RAD21 R450C substitution at the separase cleavage site, cells from peripheral sclerocornea family members had no mitosis and ploidy defects.
Conclusion: We report a family of peripheral sclerocornea with no association with cornea plana. A RAD21 variant was found cosegregating with peripheral sclerocornea. Our results suggest that RAD21 functions, other than its cell cycle and chromosome segregation regulations, could underline the pathogenesis of peripheral sclerocornea.
Competing Interests: All authors declare no conflict of interest.
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Nat Protoc. 2009;4(7):1073-81. (PMID: 19561590) - Accession Number: 0 (Biomarkers)
0 (Cell Cycle Proteins)
0 (DNA-Binding Proteins)
0 (Protein Subunits)
0 (RAD21 protein, human) - Subject Terms: Sclerocornea
- Publication Date: Date Created: 20191130 Date Completed: 20200427 Latest Revision: 20220411
- Publication Date: 20240628
- Accession Number: PMC6875196
- Accession Number: 10.1155/2019/8781524
- Accession Number: 31781308
- Source:
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