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Updated: Aug 29, 2026

Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
Use of complete coverage array comparative genomic hybridization to define copy number alterations on chromosome 3p
Cathie Garnis1, Corisande Baldwin, Lewei Zhang
1British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada. cgarnis@bccrc.ca
Abstract:
Loss of 3p has been associated with oral cancer progression and is common in many cancers. However, regions of alteration on 3p are poorly defined. We have constructed a high-resolution chromosomal array using a tiling set of 535 human bacterial artificial chromosomes that provides near complete coverage of 3p. Array comparative genomic hybridization analysis of 20 microdissected oral squamous cell carcinomas showed multiple and recurrent segments of copy number changes. These include a deletion containing the FHIT gene; novel segments of copy decrease at 3p22, 3p24, and 3p26; and an unexpected approximately 0.7 Mbp segmental increase at 3p21. These data strongly support the value of using chromosomal array comparative genomic hybridization for detailed profiling of oral squamous cell carcinomas.

