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

Identifikátory výsledku

  • Kód výsledku v 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>

  • Nalezeny alternativní kódy

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

  • Výsledek na webu

    <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>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

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

  • Popis výsledku v původním jazyce

    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.

  • Název v anglickém jazyce

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

  • Popis výsledku anglicky

    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.

Klasifikace

  • Druh

    J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

  • CEP obor

    FD - Onkologie a hematologie

  • OECD FORD obor

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/NR9029" target="_blank" >NR9029: Epidemiologická studie genetických a behaviorálních rizikových faktorů karcinomu pankreatu</a><br>

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2016

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Oncotarget

  • ISSN

    1949-2553

  • e-ISSN

  • Svazek periodika

    7

  • Číslo periodika v rámci svazku

    48

  • Stát vydavatele periodika

    US - Spojené státy americké

  • Počet stran výsledku

    14

  • Strana od-do

    78827-78840

  • Kód UT WoS článku

    000389636000052

  • EID výsledku v databázi Scopus