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Genes Chromosomes Cancer. 1997 Jan;18(1):19-29.

Genomic instability in sporadic colorectal cancer quantitated by inter-simple sequence repeat PCR analysis.

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Department of Surgical Oncology, Roswell Park Cancer Institute, Buffalo, New York 14263, USA.


Genomic instability plays a major role in cancer by facilitating tumor progression and tumor heterogeneity. Inter-simple sequence repeat (inter-SSR) PCR has been developed to provide a rapid and reproducible technique for quantitation of the major type of genomic instability observed in sporadic tumors, namely, that manifesting itself as amplifications, deletions, translocations, and insertions. Evaluation of 59 sporadic colorectal cancers by inter-SSR PCR has demonstrated a wide range of instability, independent of tumor stage at diagnosis. Comparison of these data and the results of microsatellite PCR analysis reveals an association of high genomic instability with loss of heterozygosity but no association with the replication error phenomenon arising from defects in mismatch repair.

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