Lack of correlation between survival and allele loss on chromosome 7q31-32 in primary breast cancer

Marianna Sztán, István Besznyák, Tibor Kovács, J. Tóth, Irén Számel, E. Oláh

Research output: Contribution to journalArticle

Abstract

High incidence of loss of heterozygosity (LOH), affecting the 7q31-32 chromosome region in sporadic primary human breast carcinomas suggests the presence of a tumor suppressor gene in this region which seems relevant to the development of breast cancer. To further determine the possible role of this region in the pathogenesis of human primary breast cancer and association with survival, LOH analysis was performed on 52 primary breast cancer patients using a set of highly polymorphic microsatellite markers. Our panel contained twenty biopsy cases of unknown survival, nineteen cases with more than five years survival and fourteen cases with less than two years survival. Corresponding normal and tumor DNAs were analyzed by polymerase chain reaction (PCR). The data presented here demonstrate that all patients were informative at least at one locus and 20 (38%) out of 53 cases showed LOH at one or more loci on chromosome 7q31-32. Relatively high incidence of LOH (34%) was detected at the D7S522 microsatellite marker located near to the cMet proto-oncogene while lower frequencies were observed at D7S523 (19%) and D7S495 (17%) loci, supporting the existence of a putative tumor suppressor gene at the chromosome 7q31.1 region. Our results suggest that allelic imbalance on 7q may occur at an early stage of breast carcinogenesis, as no correlation was observed between allelic loss and clinico-pathological data.

Original languageEnglish
Pages (from-to)48-51
Number of pages4
JournalPathology and Oncology Research
Volume2
Issue number1-2
DOIs
Publication statusPublished - Mar 1996

Fingerprint

Loss of Heterozygosity
Chromosomes
Alleles
Breast Neoplasms
Survival
Tumor Suppressor Genes
Microsatellite Repeats
Allelic Imbalance
Proto-Oncogenes
Incidence
Carcinogenesis
Breast
Biopsy
Polymerase Chain Reaction
DNA
Neoplasms

Keywords

  • chromosome 7q
  • loss of heterozygosity
  • primary breast carcinoma
  • tumor suppressor gene

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Oncology
  • Cancer Research

Cite this

Lack of correlation between survival and allele loss on chromosome 7q31-32 in primary breast cancer. / Sztán, Marianna; Besznyák, István; Kovács, Tibor; Tóth, J.; Számel, Irén; Oláh, E.

In: Pathology and Oncology Research, Vol. 2, No. 1-2, 03.1996, p. 48-51.

Research output: Contribution to journalArticle

Sztán, Marianna ; Besznyák, István ; Kovács, Tibor ; Tóth, J. ; Számel, Irén ; Oláh, E. / Lack of correlation between survival and allele loss on chromosome 7q31-32 in primary breast cancer. In: Pathology and Oncology Research. 1996 ; Vol. 2, No. 1-2. pp. 48-51.
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