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- W2038272068 abstract "Abstract In colorectal cancer (CRC) care, treatment decisions depend on the efforts to estimate the metastatic potential of tumors. The liver is one of the most common metastatic sites of CRC and the prognosis of CRC patients often reflects metastases to distant sites. To identify chromosomal aberrations associated with liver metastasis, we performed allelic copy number analysis for CRC with or without synchronous liver metastasis using genotyping arrays. By allelic copy number analysis of CRC samples, we observed common aberrations in 14 chromosomal arms in two groups, that is, gains on 7p22.3‐p11.2, 8q22.3‐q24.3, 13q12.12‐q34, and 20q11.22‐q13.33 and loss of heterozygosity (LOH) on 4q12‐q35.1, 5q11.2‐q35.3, 8p23.3‐p12, 15q11.2‐q26.3, 17p13.3‐p11.2, 17q11.2‐q25.1, 18p11.32‐p11.21, 18q11.2‐q23, 20p13‐p12.1, and 22q11.1‐q13.32. We found that gains on 20p13‐p12.1 and 20q11.21‐q13.33 and LOH on 6q14.1‐q25.1 were more frequent in CRC with liver metastasis. We also compared chromosomal aberrations in primary CRC lesions with those of the corresponding liver metastasis and found that the allelic genome imbalance status of a metastatic lesion is similar to that of the primary cancer, which suggests that chromosomal aberrations are largely maintained on hematogenous spread. Intriguingly, several chromosomal aberrations in CRC were found in the primary cancer but not in the corresponding liver metastasis, thus suggesting heterogeneity of cancer cells within solid tumors or the presence of events uniquely developed in primary tumors. Consequently, CRC with and without liver metastasis harbor similar chromosomal aberrations, and chromosomal aberration at 6q, 20p, and 20q may be involved in the process of liver metastasis of CRC. © 2010 Wiley‐Liss, Inc." @default.
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- W2038272068 date "2010-02-19" @default.
- W2038272068 modified "2023-10-18" @default.
- W2038272068 title "Identification of chromosomal aberrations of metastatic potential in colorectal carcinoma" @default.
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- W2038272068 doi "https://doi.org/10.1002/gcc.20759" @default.
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