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Genomic structure of the human tetratricopeptide repeat-containing gene, TTC4, from chromosome region 1p31 and mutation analysis in breast cancers.

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Loss of heterozygosity (LOH) in 1p31 is a frequent genetic alteration in breast tumors indicating the site of a tumor suppressor gene. We recently isolated a new member of the human tetratricopeptide repeat-containing family of genes, TTC4, which maps to this region. Other members of this gene family have been implicated in tumorigenesis suggesting that TTC4 may represent a breast cancer tumor suppressor gene. We now report the exon/intron structure of TTC4 and single strand conformation polymorphism (SSCP) analysis of DNA from 20 sporadic breast tumors. Although polymorphic variations were identified no mutations affecting the open reading frame of TTC4 were detected. Since the overall region of chromosome 1p31 which undergoes LOH can be relatively large, excluding involvement of newly isolated genes from this region in breast cancer tumorigenesis is an important process for the successful identification of the critical gene. Understanding the structure of TTC4 now makes mutation analysis possible for other cancers and diseases that map to this region.
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Document Type: Research Article

Affiliations: Center for Molecular Genetics/NB20, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA.

Publication date: February 1, 2000

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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