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1996 Fiscal Year Final Research Report Summary

Association between prognosis and LOH in colorectal cancers

Research Project

Project/Area Number 07671366
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Digestive surgery
Research InstitutionTokyo University

Principal Investigator

MASAKI Tadahiko  Tokyo University Medicine assistant, 医学部・附属病院, 助手 (30238894)

Co-Investigator(Kenkyū-buntansha) ISHIMARU Gosei  Tokyo University Medicine assistant, 医学部・附属病院, 助手 (70272557)
TOMINAGA Osamu  Tokyo University Medicine assistant, 医学部・附属病院, 助手 (10261976)
Project Period (FY) 1995 – 1996
KeywordsLOH (Loss of heterozygosity) / Colorectal cencer / DCC / p53
Research Abstract

Background. The aim of this study is to define the association of allelic losses with the metastatic potential of colorectal carcinoma and to determine whether allelic losses can be genetic markers for the prognosis of patients with colorectal carcinoma.
Methods. Eighty primary colorectal tumors examined for loss of heterozygosity at the DCC by using polymerase chain reaction. Association of survival was studied by multivariate analyssi.
Results. DCC alterations were detected more frequently in primary tumors with higher metastatic potential. Although no statistically significant association was found between these losses and survival or distant metastasis, patients with DCC losses showed poorer survival (p=0.056).
Conclusions. It was suggested that alterations of the DCC are critical genetic events for the acquisition of metastatic potential in colorectal carcinoma. However, further studies will be required to utilize these genetic alterations as valuable prognostic markers.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] G Ishimaru et al.: "Microsatellite instability in primary and metestatic colorctal cancers" Int. J. Cancer. 64. 153-157 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 石丸悟正: "大腸癌-診断と治療 (大腸癌の転移と遺伝子変化)" 日本メデカルセンター, 248-254 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] G.Ishimaru et al.: "Micro satellite imsbelility in primay and metastatic colorectal cancers" Int.J Cencer. 64. 153-157 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] G.Ishimaru et al.: "Colorecal ca. -Diagnosis & Treatment" Japanese Medical Center. 248-254 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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