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Biomarkers in Tissue and Blood Samples From Patients With Early Stage Non-Small Cell Lung Cancer

2014-08-27 03:13:03 | BioPortfolio

Summary

RATIONALE: Studying samples of blood and tumor tissue from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer.

PURPOSE: This research study is studying biomarkers in tissue and blood samples from patients with early-stage non-small cell lung cancer.

Description

OBJECTIVES:

- Evaluate aberrant methylation patterns in tissue and serum samples from patients with early-stage non-small cell lung cancer (NSCLC) to validate the Johns Hopkins single institutional study.

- Attempt to define subgroups of patients at greater risk for recurrent or metastatic disease who may benefit from more aggressive adjuvant therapeutic regimens.

- Develop prognostic indicators for disease-specific and overall survival.

- Define new potential molecular targets for therapy.

OUTLINE: Archived tumor and intrathoracic lymph node tissue samples are analyzed for aberrant DNA methylation (p16/CDKN2A, DAP kinase, H-cadherin, APC, and RASSF1A) by methylation-specific PCR. Analyses are then compared with the preliminary data from the Johns Hopkins institutional study.

Study Design

N/A

Conditions

Lung Cancer

Intervention

DNA methylation analysis, polymerase chain reaction, laboratory biomarker analysis

Status

Not yet recruiting

Source

National Cancer Institute (NCI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:13:03-0400

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Medical and Biotech [MESH] Definitions

MOLECULAR BIOLOGY techniques used in the diagnosis of disease. Included are such techniques as IN SITU HYBRIDIZATION of chromosomes for CYTOGENETIC ANALYSIS; OLIGONUCLEOTIDE ARRAY SEQUENCE ANALYSIS of gene expression patterns in disease states; identification of pathogenic organisms by analysis of species specific DNA sequences; and detection of mutations with POLYMERASE CHAIN REACTION.

Methods for using more than one primer set in a polymerase chain reaction to amplify more than one segment of the target DNA sequence in a single reaction.

Methods used for detecting the amplified DNA products from the polymerase chain reaction as they accumulate instead of at the end of the reaction.

In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.

A heat stable DNA-DIRECTED DNA POLYMERASE from the bacteria Thermus aquaticus. It is widely used for the amplification of genes through the process of POLYMERASE CHAIN REACTION. EC 2.7.7.-.

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