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  1. Fulltext A novel de novo mutation in COL2A1 gene associated with fetal skeletal dysplasia
    Chu FC, Hii LY, Hung TH, Lo LM, Hsieh TT, Shaw SW
    Taiwan J Obstet Gynecol, 2021 Mar;60(2):359-362.
    PMID: 33678343 DOI: 10.1016/j.tjog.2021.01.017
    OBJECTIVE: Skeletal dysplasias, caused by genetic mutations, are a heterogenous group of heritable disorders affecting bone development during fetal life. Stickler syndrome, one of the skeletal dysplasias, is an autosomal dominant connective tissue disorder caused by abnormal collagen synthesis owing to a genetic mutation in COL2A1.

    CASE REPORT: We present the case of a 38-year-old multipara woman whose first trimester screening showed a normal karyotype. However, the bilateral femur and humerus length symmetrically shortened after 20 weeks. Next-generation sequencing for mutations in potential genes leading to skeletal dysplasia detected a novel de novo mutation (c.1438G > A, p.Gly480Arg) in COL2A1, causing Stickler syndrome type 1. This pathogenic mutation might impair or destabilize the collagen structure, leading to collagen type II, IX, and XI dysfunction.

    CONCLUSION: We identified a novel de novo mutation in COL2A1 related to the STL1 syndrome and delineated the extent of the skeletal dysplasia disease spectrum.

    Matched MeSH terms: Hearing Loss, Sensorineural/embryology
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