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Related Concept Videos

Karyotyping01:17

Karyotyping

Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
Genomics02:02

Genomics

Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Comparing Copy Number Variations and SNPs02:26

Comparing Copy Number Variations and SNPs

Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...

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Related Experiment Video

Updated: Jul 12, 2026

Technical Demonstration of Whole Genome Array Comparative Genomic Hybridization
16:37

Technical Demonstration of Whole Genome Array Comparative Genomic Hybridization

Published on: August 6, 2008

Compilation of published comparative genomic hybridization studies.

Stéphanie Struski1, Martine Doco-Fenzy, Pascale Cornillet-Lefebvre

  • 1Laboratoire d'Hématologie, Hôpital Robert Debré-CHU Reims, Reims, France.

Cancer Genetics and Cytogenetics
|June 20, 2002
PubMed
Summary

Comparative genomic hybridization (CGH) identifies chromosomal imbalances in tumors. Reviewing 11,984 cases revealed recurrent genetic aberrations crucial for understanding cancer development and progression.

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Last Updated: Jul 12, 2026

Technical Demonstration of Whole Genome Array Comparative Genomic Hybridization
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Published on: August 6, 2008

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09:16

Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants

Published on: February 21, 2015

Area of Science:

  • Oncology
  • Genetics
  • Genomics

Background:

  • Comparative genomic hybridization (CGH) has been a powerful tool for characterizing chromosomal imbalances in neoplasias since 1992.
  • Understanding genetic aberrations is key to diagnosing and treating various cancers.

Purpose of the Study:

  • To review chromosomal imbalances detected by CGH in solid tumors and hemopathies.
  • To identify recurrent genetic alterations and their roles in tumor development.

Main Methods:

  • A comprehensive literature search was conducted, compiling data from 430 articles.
  • Analysis included 11,984 cases of human solid tumors and hematologic malignancies.

Main Results:

  • CGH detected numerous recurrent regions of amplification and deletion.
  • These findings aid in identifying oncogenes, tumor suppressor genes, and other genes involved in tumorigenesis.
  • Combined data revealed patterns of nonrandom genetic aberrations, some common across pathologies, others tumor-specific.

Conclusions:

  • CGH is effective in detecting chromosomal imbalances in various cancers.
  • Recurrent genetic aberrations identified through CGH provide insights into cancer biology.
  • The study highlights the utility of aggregated CGH data for cancer research.