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Article

Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis

  • Authors:
    • Tingting Yu
    • Yongguo Yu
    • Jian Wang
    • Lei Yin
    • Yunfang Zhou
    • Daming Ying
    • Rongkui Huang
    • Huijin Chen
    • Shenmei Wu
    • Yongnian Shen
    • Qihua Fu
    • Fuxiang Chen
  • View Affiliations / Copyright

    Affiliations: Department of Laboratory Medicine, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China, Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, P.R. China, Department of Laboratory Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, P.R. China, Department of Internal Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, P.R. China, Rare Diseases Outpatient Clinic, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, P.R. China
  • Pages: 1191-1196
    |
    Published online on: February 17, 2014
       https://doi.org/10.3892/mmr.2014.1955
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Abstract

Osteopetrosis is a heritable bone disorder that exhibits highly clinical and genetical heterogeneity, and is caused by defective osteoclastic resorption. The three main forms are the autosomal recessive severe (ARO), the intermediate autosomal and the autosomal dominant benign osteopetrosis forms. In the present study, the clinical, biochemical and radiological manifestations were described in a patient with osteopetrosis. Sequence analysis identified the compound heterozygous mutations, c.909C>A (p.Tyr303X) and c.2008C>T (p.Arg670X), in TCIRG1, and a heterozygous splicing mutation, c.1798‑1G>T, in the chloride channel 7 gene (CLCN7). Two aberrant forms of the CLCN7 transcripts, c.1798_1883 (exon 20) deletion predicted to cause p.Leu601GlyfsX13, and the c.1798_1821 deletion, the first 24 bp of the exon 20, predicted to cause p.Gly600_Gln607del, were detected by further analysis of the splicing patterns in the leukocytes. The patient's asymptomatic mother carried the TCIRG1 c.909C>A (p.Tyr303X) and CLCN7 c.1798‑1G>T mutations, while the asymptomatic father carried the TCIRG1 c.2008C>T (p.Arg670X) mutation only. The patient was finally diagnosed with ARO on the basis of clinical and biochemical parameters, radiological changes and genetic defects. To the best of our knowledge, this is the first reported case of a patient with osteopetrosis who carries TCIRG1 and CLCN7 mutations. In addition, among the three mutations, TCIRG1 c.909C>A and CLCN7 c.1798‑1G>T were novel mutations.
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Copy and paste a formatted citation
Spandidos Publications style
Yu T, Yu Y, Wang J, Yin L, Zhou Y, Ying D, Huang R, Chen H, Wu S, Shen Y, Shen Y, et al: Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis. Mol Med Rep 9: 1191-1196, 2014.
APA
Yu, T., Yu, Y., Wang, J., Yin, L., Zhou, Y., Ying, D. ... Chen, F. (2014). Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis. Molecular Medicine Reports, 9, 1191-1196. https://doi.org/10.3892/mmr.2014.1955
MLA
Yu, T., Yu, Y., Wang, J., Yin, L., Zhou, Y., Ying, D., Huang, R., Chen, H., Wu, S., Shen, Y., Fu, Q., Chen, F."Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis". Molecular Medicine Reports 9.4 (2014): 1191-1196.
Chicago
Yu, T., Yu, Y., Wang, J., Yin, L., Zhou, Y., Ying, D., Huang, R., Chen, H., Wu, S., Shen, Y., Fu, Q., Chen, F."Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis". Molecular Medicine Reports 9, no. 4 (2014): 1191-1196. https://doi.org/10.3892/mmr.2014.1955
Copy and paste a formatted citation
x
Spandidos Publications style
Yu T, Yu Y, Wang J, Yin L, Zhou Y, Ying D, Huang R, Chen H, Wu S, Shen Y, Shen Y, et al: Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis. Mol Med Rep 9: 1191-1196, 2014.
APA
Yu, T., Yu, Y., Wang, J., Yin, L., Zhou, Y., Ying, D. ... Chen, F. (2014). Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis. Molecular Medicine Reports, 9, 1191-1196. https://doi.org/10.3892/mmr.2014.1955
MLA
Yu, T., Yu, Y., Wang, J., Yin, L., Zhou, Y., Ying, D., Huang, R., Chen, H., Wu, S., Shen, Y., Fu, Q., Chen, F."Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis". Molecular Medicine Reports 9.4 (2014): 1191-1196.
Chicago
Yu, T., Yu, Y., Wang, J., Yin, L., Zhou, Y., Ying, D., Huang, R., Chen, H., Wu, S., Shen, Y., Fu, Q., Chen, F."Identification of TCIRG1 and CLCN7 gene mutations in a patient with autosomal recessive osteopetrosis". Molecular Medicine Reports 9, no. 4 (2014): 1191-1196. https://doi.org/10.3892/mmr.2014.1955
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