Monitoring of Early Changes of Circulating Tumor DNA in the Plasma of Rectal Cancer Patients Receiving Neoadjuvant Concomitant Chemoradiotherapy: Evaluation for Prognosis and Prediction of Therapeutic Response

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26475821%3A_____%2F20%3AN0000003" target="_blank" >RIV/26475821:_____/20:N0000003 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11110/20:10413454 RIV/00216208:11130/20:10413454 RIV/00064203:_____/20:10413454

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fonc.2020.01028/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fonc.2020.01028/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fonc.2020.01028" target="_blank" >10.3389/fonc.2020.01028</a>

Result language

angličtina

Original language name

Monitoring of Early Changes of Circulating Tumor DNA in the Plasma of Rectal Cancer Patients Receiving Neoadjuvant Concomitant Chemoradiotherapy: Evaluation for Prognosis and Prediction of Therapeutic Response

Original language description

Patients with locally advanced rectal cancer (LARC) are undergoing neoadjuvant chemoradiotherapy (NCRT) prior to surgery. Although in some patients the NCRT is known to prevent local recurrence, it is also accompanied by side effects. Accordingly, there is an unmet need to identify predictive markers allowing to identify non-responders to avoid its adverse effects. We monitored circulating tumor DNA (ctDNA) as a potential liquid biopsy-based biomarker. We have investigated ctDNA changes plasma during the early days of NCRT and its relationship to the overall therapy outcome. We have detected a somatic mutation in 33 out of 36 patients (91.7%). Seven patients (7/33, 21.2%) had ctDNA present prior to therapy. The ctDNA positivity before treatment reduced post-operative disease-free survival and overall survival by an average of 1.47 and 1.41 years, respectively (p = 0.015, and p = 0.010). In all patients, ctDNA was strongly reduced or completely eliminated from plasma by the end of the first week of NCRT, with no correlation to any of the parameters analyzed. The baseline ctDNA presence represented a statistically significant negative prognostic biomarker for the overall patient survival. As ctDNA was reduced indiscriminately from circulation of all patients, dynamics during the first week of NCRT is not suited for predicting the outcome of LARC. However, the general effect of rapid ctDNA disappearance apparently occurring during the initial days of NCRT is noteworthy and should further be studied.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30204 - Oncology

Project

<a href="/en/project/NV15-27939A" target="_blank" >NV15-27939A: Benefit of new "liquid biopsy" technology for monitoring of complex treatment of colorectal carcinoma in stage 3 and 4.</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

Frontiers in Oncology

ISSN

2234-943X

e-ISSN

2234-943X

Volume of the periodical

10

Issue of the periodical within the volume

July

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

1028

UT code for WoS article

000560534900001

EID of the result in the Scopus database

2-s2.0-85089347527