대장암에서 7, 20번 염색체의 Amplification

Amplification on 7th and 20th Chromosome from Colorectal Carcinoma

Colorectal carcinoma from various cancers is fourth ranked occurred to Korean. Due to western dietary life, this cancer has been increased continuously. Therefore, the further study will be needed to find a candidate gene involved in the development and progression of colorectal carcinoma as well as to diagnose and treatment helpfully. The purpose of this study was designed to find a carcinogenesis gene using microsatellite marker on chromosomes 7th and 20th from 30 colon cancer patients. The amplification was investigated in order of D20S97 57% (17/30), D20S101 57% (17/30), D20S119 53% (16/30), D7S483 50% (15/30), D7S495 47% (14/30), D7S498 47% (14/30). The genetic mutation pattern depends on loci of colorectal carcinoma was shown highly amplified with 3.77 from colon cancer than with 2.08 from right colorectal carcinoma (P<0.018). The genetic mutation with lymph nodes was investigated higher with 4.13 at metastasized group than with 1.93 at non-metastasized group (P<0.001). There was no difference at comparison between histological classfication and serological CEA increase as well as on genetic mutated pattern depends on disease stage. It is suggested that the amplification on chromosomes 7q and 20q determines a pivotal role from first stage to metastasis cancer and also functions as an useful marker on diagnosis and treatment of colorectal carcinoma patients as well as follow-up checkup. Recently, the diagnosis and study using genetic analyzer are necessary for efficient application. Fortunately, several university hospitals run this genetic analyzer currently so it is expected that this method makes full use of clinical application.