KRAS mutations in blood circulating cell-free DNA: a pancreatic cancer case-control study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17110%2F16%3AA21026YM" target="_blank" >RIV/61988987:17110/16:A21026YM - isvavai.cz</a>
Alternative codes found
RIV/00216224:14110/16:00093898 RIV/00216208:11110/16:10330365 RIV/61989592:15110/16:33160566 RIV/00209805:_____/16:N0000057
Result on the web
<a href="http://dx.doi.org/10.18632/oncotarget.12386" target="_blank" >http://dx.doi.org/10.18632/oncotarget.12386</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.18632/oncotarget.12386" target="_blank" >10.18632/oncotarget.12386</a>
Alternative languages
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 cfDNA should be further assessed in large case-control series.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30302 - Epidemiology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ONCOTARGET
ISSN
1949-2553
e-ISSN
1949-2553
Volume of the periodical
7
Issue of the periodical within the volume
48
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
78827-78840
UT code for WoS article
000389636000052
EID of the result in the Scopus database
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