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Related Concept Videos

Skin Cancer01:30

Skin Cancer

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Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
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Tumor Progression02:07

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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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Related Experiment Video

Updated: May 29, 2025

A 3D Organotypic Melanoma Spheroid Skin Model
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A 3D Organotypic Melanoma Spheroid Skin Model

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Genetic concordance in melanoma: insights from primary tumors and their matched distant metastases.

Thamila Kerkour1, Ruud W J Meijers2, Loes M Hollestein1

  • 1Department of Dermatology.

Melanoma Research
|February 6, 2025
PubMed
Summary

Melanoma metastasis clonal relationships are complex. Only about 50% of primary melanomas and their metastases showed a clear clonal link, questioning metastatic potential predictions.

Keywords:
clonalitydistant metastasisgenetic concordancemelanomanext-generation sequencing

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Related Experiment Videos

Last Updated: May 29, 2025

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Area of Science:

  • Oncology
  • Genetics
  • Dermatology

Background:

  • Melanoma metastasis presents a significant clinical challenge due to its aggressive behavior and rising incidence.
  • Establishing the clonal relationship between primary melanoma and metastatic sites is crucial for accurate prognostic modeling.

Purpose of the Study:

  • To compare the genetic profiles of primary melanomas and their matched metastases.
  • To assess the clonal relationship between primary tumors and distant metastases in melanoma patients.

Main Methods:

  • Targeted sequencing of 330 amplicons, focusing on hotspot regions in 41 cancer genes and 154 single nucleotide polymorphisms.
  • Analysis of mutational status and copy number variations in 15 patients with thin melanomas and distant metastases or long latency periods.

Main Results:

  • Approximately 50% of matched primary melanoma and metastasis pairs exhibited a clonal or likely clonal relationship.
  • The remaining pairs were either not clonally related or showed uncertain clonal relatedness.
  • Findings suggest potential overestimation of metastatic potential in primary tumors.

Conclusions:

  • Melanoma metastasis clonality is intricate and not always direct from the primary tumor.
  • Molecular profiles of primary tumors may not reliably predict metastatic behavior in all cases.
  • Further research with larger cohorts is necessary to elucidate melanoma metastasis and clonality complexities for improved therapeutic strategies.