Clinical characteristics and the identification of novel mutations of COL1A1 and COL1A2 in 61 Chinese patients with osteogenesis imperfecta

  • Authors:
    • Hao Zhang
    • Hua Yue
    • Chun Wang
    • Weiwei Hu
    • Jiemei Gu
    • Jinwei He
    • Wenzhen Fu
    • Yunqiu Hu
    • Miao Li
    • Zhenlin Zhang
  • View Affiliations

  • Published online on: October 12, 2016     https://doi.org/10.3892/mmr.2016.5835
  • Pages: 4918-4926
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Osteogenesis imperfecta (OI) is an inherited connective tissue disorder characterized by brittle bone fractures. The aim of the present study was to investigate the pathogenic gene mutation spectrum and clinical manifestations of mutations in collagen type I, alpha 1 (COL1A1) and collagen type I, alpha 2 (COL1A2) genes in Chinese patients with OI. A total of 61 unrelated Chinese OI patients with COL1A1 and COL1A2 mutations were recruited. All the exons and the exon-intron boundaries of the COL1A1 and COL1A2 genes were amplified and directly sequenced and lumbar spine bone mineral density was measured by dual‑energy X‑ray absorptiometry. The mutations of the 61 probands included 33 missense mutations, 8 nonsense mutations, 7 splicing variants and 13 frameshift mutations in COL1A1 and COL1A2 genes. A total of 25 novel mutations were identified, including 18 in COL1A1 and 7 in COL1A2. The mutations p.Gly257Arg, p.Gly767Ser and p.Gly821Ser in COL1A1 and p.Gly337Ser in COL1A2 may be located at a mutation hotspot for human OI due to the high repetition rate in OI patients. Family history was positive for OI in 33 probands (54%). All probands had suffered fractures and the most common fracture site was the femur. A total of 49 probands presented with blue sclerae (80.3%), 20 probands suffered from dentinogenesis imperfecta (32.8%) and 1 patient had hearing loss (1.6%). These findings may improve understanding of the pathogenic gene mutation spectrum and the clinical manifestations of mutations of COL1A1 and COL1A2 genes in Chinese patients with OI.
View Figures
View References

Related Articles

Journal Cover

November-2016
Volume 14 Issue 5

Print ISSN: 1791-2997
Online ISSN:1791-3004

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Zhang H, Yue H, Wang C, Hu W, Gu J, He J, Fu W, Hu Y, Li M, Zhang Z, Zhang Z, et al: Clinical characteristics and the identification of novel mutations of COL1A1 and COL1A2 in 61 Chinese patients with osteogenesis imperfecta. Mol Med Rep 14: 4918-4926, 2016
APA
Zhang, H., Yue, H., Wang, C., Hu, W., Gu, J., He, J. ... Zhang, Z. (2016). Clinical characteristics and the identification of novel mutations of COL1A1 and COL1A2 in 61 Chinese patients with osteogenesis imperfecta. Molecular Medicine Reports, 14, 4918-4926. https://doi.org/10.3892/mmr.2016.5835
MLA
Zhang, H., Yue, H., Wang, C., Hu, W., Gu, J., He, J., Fu, W., Hu, Y., Li, M., Zhang, Z."Clinical characteristics and the identification of novel mutations of COL1A1 and COL1A2 in 61 Chinese patients with osteogenesis imperfecta". Molecular Medicine Reports 14.5 (2016): 4918-4926.
Chicago
Zhang, H., Yue, H., Wang, C., Hu, W., Gu, J., He, J., Fu, W., Hu, Y., Li, M., Zhang, Z."Clinical characteristics and the identification of novel mutations of COL1A1 and COL1A2 in 61 Chinese patients with osteogenesis imperfecta". Molecular Medicine Reports 14, no. 5 (2016): 4918-4926. https://doi.org/10.3892/mmr.2016.5835