Intractable Rare Dis Res. 2018;7(1):37-41. (DOI: 10.5582/irdr.2018.01010)

Osteogenesis imperfecta type III/Ehlers-Danlos overlap syndrome in a Chinese man.

Lu YQ, Wang YZ, Rauch F, Li H, Zhang Y, Zhai NX, Zhang J, Ren XZ, Han JX


SUMMARY

Osteogenesis imperfecta (OI) and Ehlers-Danlos syndrome (EDS) are rare genetic disorders that are typically inherited in an autosomal dominant manner. Few cases of OI/EDS overlap syndrome have been documented. Described here is a 30-year-old Chinese male with OI type III and EDS. Sequencing of genomic DNA revealed a heterozygous COL1A1 mutation (c.671G>A, p.Gly224Asp) that affected the N-anchor domain of the alpha 1 chain of collagen type I. Ultrastructural analysis of a skin biopsy specimen revealed thin collagen fibers with irregular alignment of collagen fibers. These findings have expanded the genotypic spectrum of the OI/EDS overlap syndrome.


KEYWORDS: Ehlers-Danlos syndrome, osteogenesis imperfecta, transmission electron microscopy, collagen type I

Full Text: