Plasma microRNAs as biomarkers of pancreatic cancer risk in a prospective cohort study
File(s)miRNAs Expression and PDAC Risk_27Mar2017.doc (399 KB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Noninvasive biomarkers for early pancreatic ductal adenocarcinoma (PDAC) diagnosis and disease risk stratification are greatly needed. We conducted a nested case-control study within the Prospective Investigation into Cancer and Nutrition (EPIC) cohort to evaluate prediagnostic microRNAs (miRs) as biomarkers of subsequent PDAC risk. A panel of eight miRs (miR-10a, -10b, -21-3p, -21-5p, -30c, -106b, -155 and -212) based on previous evidence from our group was evaluated in 225 microscopically confirmed PDAC cases and 225 controls matched on center, sex, fasting status and age/date/time of blood collection. MiR levels in prediagnostic plasma samples were determined by quantitative RT-PCR. Logistic regression was used to model levels and PDAC risk, adjusting for covariates and to estimate area under the receiver operating characteristic curves (AUC). Plasma miR-10b, -21-5p, -30c and -106b levels were significantly higher in cases diagnosed within 2 years of blood collection compared to matched controls (all p-values <0.04). Based on adjusted logistic regression models, levels for six miRs (miR-10a, -10b, -21-5p, -30c, -155 and -212) overall, and for four miRs (-10a, -10b, -21-5p and -30c) at shorter follow-up time between blood collection and diagnosis (≤5 yr, ≤2 yr), were statistically significantly associated with risk. A score based on the panel showed a linear dose-response trend with risk (p-value = 0.0006). For shorter follow-up (≤5 yr), AUC for the score was 0.73, and for individual miRs ranged from 0.73 (miR-212) to 0.79 (miR-21-5p).
Date Issued
2017-06-12
Date Acceptance
2017-04-19
Citation
International Journal of Cancer, 2017, 141 (5), pp.905-915
ISSN
0020-7136
Publisher
Wiley
Start Page
905
End Page
915
Journal / Book Title
International Journal of Cancer
Volume
141
Issue
5
Copyright Statement
© 2017 UICC. This is the pre-peer reviewed version of the following article, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/ijc.30790/abstract
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000404842200006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Life Sciences & Biomedicine
Oncology
biomarkers
microRNAs
pancreatic cancer
cohort studies
DUCTAL ADENOCARCINOMA
POOR-PROGNOSIS
EXPRESSION
DIAGNOSIS
PROMOTES
SURVIVAL
CELLS
MICROENVIRONMENT
EVOLUTION
PATTERNS
Publication Status
Published