Longitudinal molecular characterization of endoscopic specimens from colorectal lesions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00179906%3A_____%2F16%3A10327248" target="_blank" >RIV/00179906:_____/16:10327248 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11110/16:10327248 RIV/00216208:11150/16:10327248 RIV/61383082:_____/16:00000203

Výsledek na webu

<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4873886/" target="_blank" >https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4873886/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3748/wjg.v22.i20.4936" target="_blank" >10.3748/wjg.v22.i20.4936</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Longitudinal molecular characterization of endoscopic specimens from colorectal lesions

Popis výsledku v původním jazyce

AIM: To compare molecular profiles of proximal colon, distal colon and rectum in large adenomas, early and late carcinomas. To assess feasibility of testing directed at molecular markers from this study in routine clinical practice. METHODS: A prospective 3-year study has resulted in the acquisition of samples from 159 large adenomas and 138 carcinomas along with associated clinical parameters including localization, grade and histological type for adenomas and localization and stage for carcinomas. A complex molecular phenotyping has been performed using multiplex ligation-dependent probe amplification technique for the evaluation of CpG-island methylator phenotype (CIMP), PCR fragment analysis for detection of microsatellite instability and denaturing capillary electrophoresis for sensitive detection of somatic mutations in KRAS, BRAF, TP53 and APC genes. RESULTS: Molecular types according to previously introduced Jass classification have been evaluated for large adenomas and early and late carcinomas. An increase in CIMP+ type, eventually accompanied with KRAS mutations, was notable between large adenomas and early carcinomas. As expected, the longitudinal observations revealed a correlation of the CIMP+/BRAF+ type with proximal location. CONCLUSION: Prospective molecular classification of tissue specimens is feasible in routine endoscopy practice. Increased frequency of some molecular types corresponds to the developmental stages of colorectal tumors. As expected, a clear distinction is notable for tumors located in proximal colon supposedly arising from the serrated (methylation) pathway.

Název v anglickém jazyce

Longitudinal molecular characterization of endoscopic specimens from colorectal lesions

Popis výsledku anglicky

AIM: To compare molecular profiles of proximal colon, distal colon and rectum in large adenomas, early and late carcinomas. To assess feasibility of testing directed at molecular markers from this study in routine clinical practice. METHODS: A prospective 3-year study has resulted in the acquisition of samples from 159 large adenomas and 138 carcinomas along with associated clinical parameters including localization, grade and histological type for adenomas and localization and stage for carcinomas. A complex molecular phenotyping has been performed using multiplex ligation-dependent probe amplification technique for the evaluation of CpG-island methylator phenotype (CIMP), PCR fragment analysis for detection of microsatellite instability and denaturing capillary electrophoresis for sensitive detection of somatic mutations in KRAS, BRAF, TP53 and APC genes. RESULTS: Molecular types according to previously introduced Jass classification have been evaluated for large adenomas and early and late carcinomas. An increase in CIMP+ type, eventually accompanied with KRAS mutations, was notable between large adenomas and early carcinomas. As expected, the longitudinal observations revealed a correlation of the CIMP+/BRAF+ type with proximal location. CONCLUSION: Prospective molecular classification of tissue specimens is feasible in routine endoscopy practice. Increased frequency of some molecular types corresponds to the developmental stages of colorectal tumors. As expected, a clear distinction is notable for tumors located in proximal colon supposedly arising from the serrated (methylation) pathway.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FE - Ostatní obory vnitřního lékařství

OECD FORD obor

—

Projekt

<a href="/cs/project/NT14383" target="_blank" >NT14383: Využití volné nádorové DNA jako nového cíle pro minimálně-invazivní diagnostiku a zpřesnění molekulární klasifikace kolorektálních nádorů.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

World Journal of Gastroenterology

ISSN

1007-9327

e-ISSN

—

Svazek periodika

22

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

10

Strana od-do

4936-4945

Kód UT WoS článku

000377075500016

EID výsledku v databázi Scopus

2-s2.0-84979021669