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Journal ArticleDOI

Nevus versus melanoma: to FISH, or not to FISH.

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TLDR
The historical development of FISH for melanoma diagnosis is introduced and its diagnostic value as well as its potential limitations at present are discussed.
Abstract
Fluorescence in-situ hybridization (FISH) has arisen as a novel ancillary test for the pathological diagnosis of melanoma. It is an outgrowth of studies using comparative genomic hybridization, a technique capable of surveying the entire genome for DNA copy number changes. An original report published in 2009 showed high sensitivity (87%) and specificity (95%) for diagnosing melanoma, using a combination of 4 FISH probes that target 6p25 (RREB1), 6q23 (MYB), 11q13 (CCND1), and chromosome 6 centromere. Since then, a number of studies have been published, supporting the high accuracy of FISH for diagnosing melanoma. In addition, various clinicopathological settings where FISH may be particularly useful are explored. FISH tests for melanoma are now commercially available. Meanwhile, questions have been raised by some about the true diagnostic value of FISH, particularly in melanocytic lesions with ambiguous histopathology. This review will briefly introduce the historical development of FISH for melanoma diagnosis and discuss its diagnostic value as well as its potential limitations at present.

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Journal ArticleDOI

Clinical validation of a gene expression signature that differentiates benign nevi from malignant melanoma

TL;DR: The goal of this study was to identify a gene expression signature that reliably differentiated benign and malignant melanocytic lesions and evaluate its potential clinical applicability, and the development and clinical validation using multiple independent cohorts of melanocytics lesions representing a broad spectrum of histopathologic subtypes.
Journal ArticleDOI

Practical application of new technologies for melanoma diagnosis: Part I. Noninvasive approaches

TL;DR: The practical applications of emerging technologies for noninvasive melanoma diagnosis, including mobile (smartphone) applications, multispectral imaging (ie, MoleMate and MelaFind), and electrical impedance spectroscopy (Nevisense) are reviewed.
Journal ArticleDOI

Molecular beacon-based tricomponent probe for SNP analysis in folded nucleic acids

TL;DR: It was demonstrated that the DNA analytes folded in hairpin structures with stems containing 5, 6, 7, 8, 9, 11, or 13 base pairs can be detected in real time with the limit of detection lying in the nanomolar range.
Journal ArticleDOI

Practical application of new technologies for melanoma diagnosis: Part II. Molecular approaches.

TL;DR: The goal is to provide the clinician with an up to date understanding of these molecular approaches so that they can be applied to their management of challenging melanocytic lesions.
Journal ArticleDOI

Application of Fluorescence In Situ Hybridization (FISH) Technique for the Detection of Genetic Aberration in Medical Science.

TL;DR: Fluorescence in situ hybridization is a macromolecule recognition technique, which is considered as a new advent in the field of cytology and applied to detect genetic abnormalities that include different characteristic gene fusions or the presence of an abnormal number of chromosomes in a cell or loss of a chromosomal region or a whole chromosome.
References
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Journal ArticleDOI

Distinct Sets of Genetic Alterations in Melanoma

TL;DR: The genetic alterations identified in melanoma at different sites and with different levels of sun exposure indicate that there are distinct genetic pathways in the development of melanoma and implicate CDK4 and CCND1 as independent oncogenes in melanomas without mutations in BRAF or N-RAS.
Journal ArticleDOI

High frequency of BRAF mutations in nevi.

TL;DR: In this article, the authors evaluated the timing of mutations in BRAF during melanocytic neoplasia and found that mutations resulted in the V599E amino acid substitution in 41 of 60 (68%) melanoma metastases, 4 of 5 (80%) primary melanomas and, unexpectedly, in 63 of 77 (82%) nevi.
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