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Transcriptome Analysis in Vulvar Squamous Cell Cancer.
Katharina Prieske1,2,3, Malik Alawi4, Anna Jaeger1
1Department of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
Cancers
|December 24, 2021
Summary
This study reveals distinct RNA expression patterns in vulvar squamous cell carcinoma (VSCC) subtypes. Identifying a specific TP53-mutated subgroup associated with poorer survival offers potential for targeted therapies.
Area of Science:
- Oncology
- Molecular Pathology
- Genomics
Background:
- Vulvar squamous cell carcinoma (VSCC) lacks molecular pathological information for targeted therapy.
- Two etiological pathways exist: HPV-induced and HPV-independent (often TP53-mutated).
Purpose of the Study:
- To analyze RNA expression patterns for VSCC subtype stratification.
- To integrate gene expression data with whole exome sequencing.
- To identify prognostic markers and therapeutic targets.
Main Methods:
- Multiplex gene expression analysis (NanoString) of 770 genes in 24 VSCC samples.
- Integration with prior next-generation sequencing data.
- Comparative analysis between TP53-mutated and HPV-positive VSCC.
Main Results:
- 98 genes were differentially expressed between TP53-mutated and HPV-positive VSCC.
- Cell cycle regulation showed aberrant expression, particularly in HPV-positive disease.
- A distinct TP53-mutated subgroup correlated with significantly worse overall survival (p=0.017).
Conclusions:
- Distinct RNA expression profiles identified for known VSCC subtypes.
- Potential for further subclassification within the TP53-mutated VSCC group.
- Findings may guide development of targeted therapies for VSCC.
