KRAS mutations in blood circulating cell-free DNA: a pancreatic cancer case-control study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00209805%3A_____%2F16%3AN0000057" target="_blank" >RIV/00209805:_____/16:N0000057 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14110/16:00093898 RIV/00216208:11110/16:10330365 RIV/61989592:15110/16:33160566 RIV/61988987:17110/16:A21026YM

Result on the web

<a href="http://www.impactjournals.com/oncotarget/index.php?journal=oncotarget&page=article&op=view&path" target="_blank" >http://www.impactjournals.com/oncotarget/index.php?journal=oncotarget&page=article&op=view&path</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.18632/oncotarget.12386" target="_blank" >10.18632/oncotarget.12386</a>

Result language

angličtina

Original language name

KRAS mutations in blood circulating cell-free DNA: a pancreatic cancer case-control study

Original language description

The utility of KRAS mutations in plasma circulating cell-free DNA (cfDNA) samples as non-invasive biomarkers for the detection of pancreatic cancer has never been evaluated in a large case-control series. We applied a KRAS amplicon-based deep sequencing strategy combined with analytical pipeline specifically designed for the detection of low-abundance mutations to screen plasma samples of 437 pancreatic cancer cases, 141 chronic pancreatitis subjects, and 394 healthy controls. We detected mutations in 21.1% (N=92) of cases, of whom 82 (89.1%) carried at least one mutation at hotspot codons 12, 13 or 61, with mutant allelic fractions from 0.08% to 79%. Advanced stages were associated with an increased proportion of detection, with KRAS cfDNA mutations detected in 10.3%, 17,5% and 33.3% of cases with local, regional and systemic stages, respectively. We also detected KRAS cfDNA mutations in 3.7% (N=14) of healthy controls and in 4.3% (N=6) of subjects with chronic pancreatitis, but at significantly lower allelic fractions than in cases. Combining cfDNA KRAS mutations and CA19-9 plasma levels on a limited set of case-control samples did not improve the overall performance of the biomarkers as compared to CA19-9 alone. Whether the limited sensitivity and specificity observed in our series of KRAS mutations in plasma cfDNA as biomarkers for pancreatic cancer detection are attributable to methodological limitations or to the biology of cena should be further assessed in large case-control series.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

FD - Oncology and haematology

OECD FORD branch

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Project

<a href="/en/project/NR9029" target="_blank" >NR9029: Genetic and behavioral risk factors of pancreatic cancer - an epidemiological study.</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Oncotarget

ISSN

1949-2553

e-ISSN

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Volume of the periodical

7

Issue of the periodical within the volume

48

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

78827-78840

UT code for WoS article

000389636000052

EID of the result in the Scopus database

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