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Clinical Trial Summary

RATIONALE: Studying the genes expressed in samples of tumor tissue from patients with cancer may help doctors identify biomarkers related to cancer.

PURPOSE: This research study is looking at tumor tissue samples from patients with stage I, stage II, or stage III malignant melanoma.


Clinical Trial Description

OBJECTIVES:

- Determine the genetic profile of primary melanomas with and without synchronous regional nodal involvement by examining for 1) activating mutations B-Raf and N-Ras associated with melanoma development, and 2) allelic imbalances across the genome.

- Compare the genetic profile of primary melanomas from patients with and without lymph node involvement.

- Determine the combinations of genetic lesions that correlate with nodal metastasis by adopting a statistical machine learning approach to build a lesion-based classifier for nodal metastasis.

OUTLINE: Laser capture microdissection is performed on the archived tissue samples to isolate melanoma cells. DNA is then purified from the samples and amplified using PCR. Matrix-assisted laser desorption/ionization (MALDI)-time of flight mass spectrometry technology is used to detect mutations of B-Raf and N-Ras. Single nucleotide polymorphism arrays are also performed.

Information about the patient's demographics (e.g., TNM staging, sex, age, and tissue collection dates) will be gathered by chart review or from the Multidisciplinary Melanoma Conference at University Hospitals tumor conference report in order to match cases. ;


Study Design

Time Perspective: Prospective


Related Conditions & MeSH terms


NCT number NCT00991991
Study type Observational
Source Case Comprehensive Cancer Center
Contact
Status Terminated
Phase N/A
Start date July 2009
Completion date March 2016

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