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Updated: Jun 23, 2026

Zebrafish Model of Neuroblastoma Metastasis
Published on: March 14, 2021
Neuroblastoma rat sarcoma mutated melanoma: That's what we got so far
Elisa Bertoli1,2, Marco Giavarra1,2, Maria Grazia Vitale1,2
1Department of Medicine (DAME), University of Udine, Udine, Italy.
Abstract:
Neuroblastoma rat sarcoma (NRAS) mutation, occurring in about 20%-30% of cutaneous melanomas, leads to activation of RAS-RAF-MAPK cascade and represents a clear distinct clinicopathological entity in melanoma. In contrast with BRAF mutant melanoma, no specific target therapies are available outside the setting of clinical trials. In the field of immunoncology, the predictive role of NRAS mutation with respect to checkpoint inhibitors treatment has not clearly established and deserves further investigation. At present, the standard treatment is the same as for BRAF wild type melanoma. Ongoing trials are exploring novel combination strategies among patients with advanced NRAS mutant melanoma.
Insights
Neuroblastoma rat sarcoma (NRAS) mutations are common in melanoma, activating key cell signaling pathways. Unlike BRAF mutations, NRAS-mutant melanoma lacks targeted therapies, necessitating further research into effective treatments.
Area of Science:
- Oncology
- Dermatology
- Molecular Biology
Background:
- Neuroblastoma rat sarcoma (NRAS) mutations occur in 20%-30% of cutaneous melanomas.
- NRAS mutations activate the RAS-RAF-MAPK signaling cascade, defining a distinct clinicopathological entity.
- Unlike BRAF-mutant melanoma, NRAS-mutant melanoma currently lacks specific targeted therapies outside clinical trials.
Purpose of the Study:
- To investigate the role of NRAS mutations in melanoma.
- To explore potential therapeutic strategies for NRAS-mutant melanoma.
- To clarify the predictive value of NRAS mutations in response to checkpoint inhibitor therapy.
Main Methods:
- Review of current literature on NRAS mutations in melanoma.
- Analysis of clinical trial data for NRAS-mutant melanoma patients.
- Exploration of ongoing research into novel combination therapies.
Main Results:
- NRAS mutations are associated with a distinct clinicopathological entity in melanoma.
- No specific targeted therapies are currently approved for NRAS-mutant melanoma.
- The predictive role of NRAS mutations in response to checkpoint inhibitors requires further investigation.
Conclusions:
- NRAS-mutant melanoma represents a significant challenge due to the lack of targeted therapies.
- Further research is crucial to establish the efficacy of immunoncology treatments in NRAS-mutant melanoma.
- Ongoing clinical trials are exploring novel treatment combinations for advanced NRAS-mutant melanoma.
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