Intratumor heterogeneity inferred from targeted deep sequencing as a prognostic indicator.

Abstract:

:Tumor genetic heterogeneity may underlie poor clinical outcomes because diverse subclones could be comprised of metastatic and drug resistant cells. Targeted deep sequencing has been used widely as a diagnostic tool to identify actionable mutations in cancer patients. In this study, we evaluated the clinical utility of estimating tumor heterogeneity using targeted panel sequencing data. We investigated the prognostic impact of a tumor heterogeneity (TH) index on clinical outcomes, using mutational profiles from targeted deep sequencing data acquired from 1,352 patients across 8 cancer types. The TH index tended to be increased in high pathological stage disease in several cancer types, indicating clonal expansion of cancer cells as tumor progression proceeds. In colorectal cancer patients, TH index values also correlated significantly with clinical prognosis. Integration of the TH index with genomic and clinical features could improve the power of risk prediction for clinical outcomes. In conclusion, deep sequencing to determine the TH index could serve as a promising prognostic indicator in cancer patients.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Oh BY,Shin HT,Yun JW,Kim KT,Kim J,Bae JS,Cho YB,Lee WY,Yun SH,Park YA,Park YH,Im YH,Lee J,Joung JG,Kim HC,Park WY

doi

10.1038/s41598-019-41098-0

subject

Has Abstract

pub_date

2019-03-14 00:00:00

pages

4542

issue

1

issn

2045-2322

pii

10.1038/s41598-019-41098-0

journal_volume

9

pub_type

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