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Prognostic value of chromosome 1 and 8 copy number in invasive ductal breast carcinoma among iranian women: An interphase FISH analysis

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Pathology & Oncology Research

Abstract

Breast cancer is amongst the leading causes of death in women worldwide and the most common cancer amongst Iranian women. Unfortunately, the current clinical and histological criteria can only help 60 percent of women with breast cancer in diagnosis and long-term treatment. Therefore, genetic markers both at single gene and chromosomal level can play an important role in improving the diagnosis and prognosis of breast cancer patients. The aim of this retrospective study was to investigate the role of chromosome 1 and 8 copy number assessed by interphase fluorescence in situ hybridization (FISH), as prognostic parameters in 50 Iranian women, aged 35 to 64 years, with sporadic invasive ductal breast carcinoma. Chromosome 1 and 8 copy numbers were evaluated in relation to established clinicopathological parameters, the immunohistochemical markers ER, PR, P53 and cathepsin D, DNA index by flow cytometry, age and survival status of the patients. FISH using centromeric probes for chromosomes 1 and 8 was applied to interphase cell suspensions prepared from archived, Carnoyfixed tumor cells and selected paraffin-embedded tumor sections. Aneusomy for chromosomes 1 and 8 was present in all 50 patients to different levels. The total abnormality rate for chromosome 1 was 33.92 percent (4.24 percent monosomy and 29.68 percent polysomy), whereas for chromosome 8 this rate was 28.30 percent (6.48 percent monosomy and 21.82 percent polysomy). Statistically significant association (p<0.05) was demonstrated between monosomy 1 and patients’ age below 50 years, and between monosomy 1 and poor survival, respectively. Disomy 8 was significantly associated with P53 expression. A borderline significant correlation was demonstrated between polysomy 8 and diploid DNA content, as well as between disomy 1 and disease-free status of the patients. Chromosome 1 and 8 copy numbers may be considered as useful prognostic markers in invasive ductal carcinoma of the breast.

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Authors and Affiliations

  1. Department of Medical Genetics, Cancer Institute, Faculty of Medicine, Tehran University of Medical Sciences, Iran

    Farkhondeh Behjati, Mahdi Zamani & Parvin Mehdipour

  2. Department of Surgery, Cancer Institute, Faculty of Medicine, Tehran University of Medical Sciences, Iran

    Morteza Atri

  3. Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Iran

    Hossein Najmabadi

  4. Department of Epidemiology & Biostatistics, School of Public Health, Tehran University of Medical Sciences, Iran

    Keramat Nouri

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  1. Farkhondeh Behjati
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  2. Morteza Atri
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  3. Hossein Najmabadi
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  4. Keramat Nouri
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  5. Mahdi Zamani
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  6. Parvin Mehdipour
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Correspondence to Parvin Mehdipour.

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Behjati, F., Atri, M., Najmabadi, H. et al. Prognostic value of chromosome 1 and 8 copy number in invasive ductal breast carcinoma among iranian women: An interphase FISH analysis. Pathol. Oncol. Res. 11, 157–163 (2005). https://doi.org/10.1007/BF02893392

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  • DOI: https://doi.org/10.1007/BF02893392

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