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Updated: Feb 10, 2026
A Robust Discovery Platform for the Identification of Novel Mediators of Melanoma Metastasis
Published on: March 8, 2022
Biopanel identifies expression status of targetable proteins in sinonasal melanoma
Lisa Grünmüller1, Julia Thierauf2, Stephanie E Weissinger1
1Institute of Pathology, Ulm University, Ulm, Germany.
Background:
Advanced stage at presentation, lack of BRAF mutations and overall rarity pose unique challenges to the therapy and trial design in sinonasal melanoma.
Methods:
Here, we assessed the expression status of 12 proteins in two independent cohorts of sinonasal melanoma (n = 20).
Results:
Each case showed expression of at least one protein (KIT, TP53, MYC, HER2, EGFR, MET, VEGFR, BRAF V600E and/or MDM2), whereas lack of ALK, FLI1 and PDGFRα expression underscores differences to cutaneous melanoma. Comparison of marker frequencies to a metareview of the literature indicates that MYC, HER2, EGFR and MET had not been previously assessed.
Conclusion:
Expression of at least one potentially targetable protein per case illustrates proteome pathway profiling as one starting point for marker stratified trial design.
Insights
Sinonasal melanoma, a rare cancer, presents unique therapeutic challenges. Proteomic profiling revealed that each tumor expressed at least one targetable protein, aiding future clinical trial design.
Area of Science:
- Oncology
- Melanoma Research
- Proteomics
Background:
- Sinonasal melanoma is rare, often diagnosed at advanced stages.
- Lack of BRAF mutations complicates treatment strategies.
- Therapeutic and clinical trial design face significant challenges.
Purpose of the Study:
- To assess the expression of 12 key proteins in sinonasal melanoma.
- To identify potential therapeutic targets for this rare cancer.
- To inform future clinical trial designs for sinonasal melanoma.
Main Methods:
- Analysis of protein expression in two independent sinonasal melanoma cohorts (n=20).
- Evaluation of 12 specific proteins including KIT, TP53, MYC, HER2, EGFR, MET, VEGFR, BRAF V600E, MDM2, ALK, FLI1, and PDGFRα.
- Comparison of findings with existing literature and meta-reviews.
Main Results:
- All sinonasal melanoma cases expressed at least one assessed protein.
- Absence of ALK, FLI1, and PDGFRα expression differentiates it from cutaneous melanoma.
- MYC, HER2, EGFR, and MET expression were assessed for the first time in this context.
Conclusions:
- The proteomic profile of sinonasal melanoma includes potentially targetable proteins in every case.
- Proteome pathway profiling offers a foundation for developing marker-stratified clinical trials.
- Identifying targetable proteins is crucial for advancing sinonasal melanoma treatment.
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