Genetic Basis and Molecular Mechanisms of Uveal Melanomas
A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Oncology".
Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 46278
Special Issue Editors
Interests: rare cancers genetics; stem cells microenvironment
Special Issues, Collections and Topics in MDPI journals
Interests: uveal melanoma; sarcoma; genetics; biomarkers; stem cells; targeted therapies
Special Issue Information
Dear Colleagues,
Uveal melanoma (UM) is the most common primary eye tumour of adults. For most patients the primary tumour is effectively controlled with surgical or radio-therapeutic approaches. Unfortunately, about 50% of patients will later present with metastases, usually affecting the liver. The time between treatment of the primary tumour and metastasis ranges from simultaneous presentation to decades later. For many patients however, treatment of the primary tumour is analogous to “closing the door after the horse has bolted”, since the tumour has already spread prior to the removal of the eye.
It is now 30 years since the first publications reported UM as having recurrent abnormalities of chromosomes 1, 3, 6 and 8. These changes are reliable genetic biomarkers of aggressive UM. Their presence detected by a number of methods, and the use of other genetic tests, contribute to the prognostic assessment of UM. In the intervening 30 years however, little headway has been made in understanding the mechanistic control these changes exert. The target genes in the large areas affected have not been fully identified. Even for targets, such as BAP1 there is still much to learn regarding its role in UM. Other mutations, such as those of GNAQ and GNA11, are ubiquitous amongst UM and in combination with additional mutations point to dysregulation of key pathways. UM however remain at odds with many solid tumours, and specifically unlike their cutaneous counterpart, they mainly do not demonstrate high levels of genetic instability. Recent studies combining bioinformatics with additional investigations have contributed to the identification of new targets for exploration and revealed that epigenetic modulation of UM maybe a key driver in their development. The consequences of molecular / cytogenetic changes to the mechanistic regulation of UM is not clearly understood. Equally, studies have shown the perversion in UM of regulatory pathways but the mechanism instigating these changes is again poorly detailed. As a cancer of unmet need, a better understanding of its genetic basis and sequences is essential to improving the treatment of patients with disseminated disease.
This special issue will cover all aspects of the genetic background to UM and the mechanistic consequences. Areas of focus include, but are not limited to, tumour heterogeneity and targeted treatment based on genetic alterations, a better understanding of the DNA Damage response (DDR), and the effect of changes on the mechanisms and control of UM.
Dr. Karen Sisley
Guest Editor
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Keywords
- genetic
- regulatory mechanisms
- heterogeneity
- biomarkers
- DNA repair
- chromosomes
- mutational analysis
- epigenetic
- synthetic lethality
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