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Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome

  • Authors:
    • Ying Lin
    • Hongbin Gao
    • Siming Ai
    • Jacob V.P. Eswarakumar
    • Tao Li
    • Bingqian Liu
    • Hongye Jiang
    • Yuhua Liu
    • Xialin Liu
    • Yonghao Li
    • Yao Ni
    • Jiangna Chen
    • Zhuoling Lin
    • Xiaoling Liang
    • Chenjin Jin
    • Xinhua Huang
    • Lin Lu
    • Yizhi Liu
  • View Affiliations / Copyright

    Affiliations: State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China, Guangdong Provincial Key Laboratory of Occupational Diseases Prevention and Treatment, Guangdong Province Hospital for Occupational Diseases Prevention and Treatment, Guangzhou, Guangdong 510300, P.R. China, Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT 06520, USA, Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510000, P.R. China
    Copyright: © Lin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1941-1946
    |
    Published online on: July 11, 2016
       https://doi.org/10.3892/mmr.2016.5497
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Abstract

Crouzon syndrome, a dominantly inherited disorder and the most common type of craniosynostosis syndrome, is caused by mutations in the fibroblast growth factor receptor 2 (FGFR 2) gene, and characterized by craniosynostosis, shallow orbits, ocular proptosis, midface hypoplasia and a curved, beak‑like nose. The purpose of the present study was to investigate the fibroblast growth factor receptor 2 (FGFR 2) gene in two Chinese families with Crouzon syndrome and to characterize the associated clinical features. Two families underwent complete ophthalmic examination, and three patients in two families were diagnosed with Crouzon syndrome. Genomic DNA was extracted from leukocytes of peripheral blood samples, which were collected from the family members and 200 unrelated control subjects from the same population. Exons 8 and 10 of the FGFR 2 gene were amplified using polymerase chain reaction analysis and were directly sequenced. Ophthalmic examinations, including best‑corrected visual acuity, slit‑lamp examination, fundus examination and Computerized Tomography scans, and physical examinations were performed to exclude systemic diseases. These patients were affected with shallow orbits and ocular proptosis, accompanied by midface hypoplasia, craniosynostosis, strabismus or papilloedema, with clinically normal hands and feet. A heterozygous FGFR 2 missense mutation, c.811‑812insGAG (p.273insGlu) in exon 8 was identified in the affected individual, but not in the unaffected family members or the normal control individuals in family 1. In family 2, another heterozygous FGFR 2 missense mutation, c.842A>G (P.Tyr281Cys or Y281C), in exon 8 was identified in the affected boy and his mother, but not in the unaffected family members or the normal control individuals. Although FGFR 2 gene mutations and polymorphisms have been reported in various ethnic groups, particularly in the area of osteology, the present study reported for the first time, to the best of our knowledge, the identification of two novel FGFR 2 gene mutations in Chinese patients with Crouzon syndrome.
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Copy and paste a formatted citation
Spandidos Publications style
Lin Y, Gao H, Ai S, Eswarakumar JV, Li T, Liu B, Jiang H, Liu Y, Liu X, Li Y, Li Y, et al: Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome. Mol Med Rep 14: 1941-1946, 2016.
APA
Lin, Y., Gao, H., Ai, S., Eswarakumar, J.V., Li, T., Liu, B. ... Liu, Y. (2016). Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome. Molecular Medicine Reports, 14, 1941-1946. https://doi.org/10.3892/mmr.2016.5497
MLA
Lin, Y., Gao, H., Ai, S., Eswarakumar, J. V., Li, T., Liu, B., Jiang, H., Liu, Y., Liu, X., Li, Y., Ni, Y., Chen, J., Lin, Z., Liang, X., Jin, C., Huang, X., Lu, L., Liu, Y."Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome". Molecular Medicine Reports 14.3 (2016): 1941-1946.
Chicago
Lin, Y., Gao, H., Ai, S., Eswarakumar, J. V., Li, T., Liu, B., Jiang, H., Liu, Y., Liu, X., Li, Y., Ni, Y., Chen, J., Lin, Z., Liang, X., Jin, C., Huang, X., Lu, L., Liu, Y."Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome". Molecular Medicine Reports 14, no. 3 (2016): 1941-1946. https://doi.org/10.3892/mmr.2016.5497
Copy and paste a formatted citation
x
Spandidos Publications style
Lin Y, Gao H, Ai S, Eswarakumar JV, Li T, Liu B, Jiang H, Liu Y, Liu X, Li Y, Li Y, et al: Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome. Mol Med Rep 14: 1941-1946, 2016.
APA
Lin, Y., Gao, H., Ai, S., Eswarakumar, J.V., Li, T., Liu, B. ... Liu, Y. (2016). Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome. Molecular Medicine Reports, 14, 1941-1946. https://doi.org/10.3892/mmr.2016.5497
MLA
Lin, Y., Gao, H., Ai, S., Eswarakumar, J. V., Li, T., Liu, B., Jiang, H., Liu, Y., Liu, X., Li, Y., Ni, Y., Chen, J., Lin, Z., Liang, X., Jin, C., Huang, X., Lu, L., Liu, Y."Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome". Molecular Medicine Reports 14.3 (2016): 1941-1946.
Chicago
Lin, Y., Gao, H., Ai, S., Eswarakumar, J. V., Li, T., Liu, B., Jiang, H., Liu, Y., Liu, X., Li, Y., Ni, Y., Chen, J., Lin, Z., Liang, X., Jin, C., Huang, X., Lu, L., Liu, Y."Molecular analysis of FGFR 2 and associated clinical observations in two Chinese families with Crouzon syndrome". Molecular Medicine Reports 14, no. 3 (2016): 1941-1946. https://doi.org/10.3892/mmr.2016.5497
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