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Updated: Jul 15, 2026
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A Robust Discovery Platform for the Identification of Novel Mediators of Melanoma Metastasis
Published on: March 8, 2022
Gene expression profiling of primary cutaneous melanoma
V Winnepenninckx1, J J Van den Oord
1Laboratorium voor Morfologie en Moleculaire Pathologie, Departement Medisch Diagnostische Wetenschappen, Faculteit Geneeskunde, KULeuven, Minderbroedersstraat 12 - B-3000 Leuven.
Verhandelingen - Koninklijke Academie Voor Geneeskunde Van Belgie
|April 13, 2007
Summary
This study identifies a 254-gene signature for predicting cutaneous malignant melanoma (CMM) progression and outcome. Mini-chromosome maintenance proteins (mcm3, 4, and 6) show independent prognostic value, offering new therapeutic targets for melanoma.
Area of Science:
- Oncology
- Genomics
- Dermatology
Background:
- Cutaneous malignant melanoma (CMM) incidence is rising, with high mortality and poorly understood progression mechanisms.
- Current prognostic markers for CMM lack sufficient predictive accuracy.
- Identifying molecular drivers of CMM progression is crucial for improved patient outcomes.
Purpose of the Study:
- To investigate molecular mechanisms of CMM progression using gene-expression profiling.
- To identify novel prognostic markers for CMM.
- To explore therapeutic targets for advanced CMM.
Main Methods:
- Global gene-expression profiling of 83 primary melanomas, 9 metastases, and 23 nevi using 44K oligonucleotide micro-arrays.
- Unsupervised and supervised analyses to identify patient clusters and prognostic gene signatures.
- Immunohistochemical validation of potential prognostic markers, including mini-chromosome maintenance (mcm) proteins.
Main Results:
- Identified distinct patient clusters based on gene expression profiles, correlating with patient outcomes.
- Discovered a 254-gene genomic signature with prognostic significance, largely associated with tumor thickness.
- Validated the signature's predictive accuracy, comparable to established markers like tumor thickness and ulceration.
- Identified 8 new potential prognostic markers, with mcm3, mcm4, and mcm6 demonstrating independent prognostic value.
- Observed gene expression similarities between primary CMM and metastases.
Conclusions:
- The study provides insights into molecular mechanisms driving CMM progression.
- A novel 254-gene signature aids in CMM prognostication.
- Mcm proteins (mcm3, 4, 6) emerge as independent prognostic markers for melanoma.
- Findings may inform the development of targeted therapies for advanced CMM.
