Abbreviated Name

Biomarkers for early detection of pancreatic cancer

Lead Investigator

Lokshin, Anna — University of Pittsburgh Cancer Institute

Coordinating Investigator

Lokshin, Anna — University of Pittsburgh Cancer Institute

Involved Investigators

• Lokshin, Anna — University of Pittsburgh Cancer Institute
• Brand, Randall E. — University of Pittsburgh
• Grizzle, William E. — University of Alabama at Birmingham
• Allen, Peter J. — Duke University
• Zheng, Yingye — Fred Hutchinson Cancer Center

Abstract

Background: The clinical management of pancreatic cancer is severely hampered by the absence of effective screening tools. Methods: Sixty-seven biomarkers were evaluated in prediagnostic sera obtained from cases of pancreatic cancer enrolled in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO). Results: The panel of CA 19-9, OPN, and OPG, identified in a prior retrospective study, was not effective. CA 19-9, CEA, NSE, bHCG, CEACAM1 and PRL were significantly altered in sera obtained from cases greater than 1 year prior to diagnosis. Levels of CA 19-9, CA 125, CEA, PRL, and IL-8 were negatively correlated with time to diagnosis. A training/validation study using alternate halves of the PLCO set failed to identify a biomarker panel with significantly improved performance over CA 19-9 alone. When the entire PLCO set was used for training at a specificity (SP) of 95%, a panel of CA 19-9, CEA, and Cyfra 21-1 provided significantly elevated sensitivity (SN) levels of 32.4% and 29.7% in samples collected <1 and >1 year prior to diagnosis, respectively, compared to SN levels of 25.7% and 17.2% for CA 19-9 alone. Conclusions: Most biomarkers identified in previously conducted case/control studies are ineffective in prediagnostic samples, however several biomarkers were identified as significantly altered up to 35 months prior to diagnosis. Two newly derived biomarker combination offered some advantage of CA 19-9 alone in terms of SN, particularly in samples collected >1 year prior to diagnosis, however further study will be needed to fully define the implications of these findings.

Aims

1. Validate biomarkers identified in case/control set in preclinical proximal PLCO samples 2. Optimize biomarkers for maximal classification of preclinical disease

Analytic Method

Luminex

Publications

• No publications available at this time for this protocol.

Biomarkers

• No biomarkers available at this time for this protocol.

Data Collections

• Analysis of pancreatic cancer biomarkers in PLCO set

 Team Project

Start Date

Jun 15 2009

Estimated Finish Date

Dec 15 2015

Protocol ID

384

Protocol Type

Validation

Fields of Research

• Proteomics

Collaborative Group

G.I. and Other Associated Cancers Research Group

Cancer Types

• Malignant neoplasm of pancreas

Phased Status

2