Uveal melanoma: Towards a molecular understanding

Area of Science:

• Ophthalmology
• Oncology
• Genetics

Background:

• Uveal melanoma (UM) is an aggressive eye cancer originating from melanocytes.
• Metastasis occurs in up to 50% of UM patients despite primary tumor treatment.
• UM has unique genetic features and lower mutational burden compared to cutaneous melanoma, limiting immunotherapy efficacy.

Purpose of the Study:

• To review current knowledge on genetic events driving uveal melanoma.
• To discuss the implications of these genetic alterations for disease course and prognosis.
• To explore therapeutic strategies targeting specific aberrant pathways in UM.

Main Methods:

• Review of independent studies identifying genetic aberrations in uveal melanoma.
• Analysis of expression profiling and epigenetic data.
• Correlation of genetic mutations with chromosomal anomalies and metastatic risk.

Main Results:

• Activating mutations in the Gα11/Q pathway are key oncogenic drivers.
• Mutations in BAP1, SF3B1, or EIF1AX predict metastatic progression.
• Distinct chromosomal anomalies (chromosomes 3, 6, 8) correlate with specific mutation subtypes and adverse outcomes.

Conclusions:

• Genetic profiling of uveal melanoma enables improved classification and prognostication.
• Subdivision into metastatic risk subgroups based on mutations (BAP1, SF3B1, EIF1AX) is supported by molecular data.
• Future treatment and prevention strategies may be tailored to individual tumor genetic profiles.