Genomic Characterization and Comparison of Multi-Regional and Pooled Tumor Biopsy Specimens.

ABSTRACT: A single tumor biopsy specimen is typically used in cancer genome studies. However, it may represent incompletely the underlying mutational and transcriptional profiles of tumor biology. Multi-regional biopsies have the advantage of increased sensitivity for genomic profiling, but they are not cost-effective. The concept of an alternative method such as the pooling of multiple biopsies is a challenge. In order to determine if the pooling of distinct regions is representative at the genomic and transcriptome level, we performed sequencing of four regional samples and pooled samples for four cancer types including colon, stomach, kidney and liver cancer. Subsequently, a comparative analysis was conducted to explore differences in mutations and gene expression profiles between multiple region

SUBMITTER: Joung JG 

PROVIDER: S-EPMC4807092 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature