Custom-Designed CGH Microarray

Agilent Technologies, Inc announced that scientists using an Agilent custom-designed comparative genomic hybridization (CGH) array have sequenced the entire gene map of a Korean male. An international team led by researchers at Seoul National University published the results in Nature.

The study, ‘A highly annotated whole-genome sequence of a Korean individual’, is the second Korean genome to be sequenced in recent months and the seventh complete human genome to be published in the past two years.

The Seoul National University team used several complementary approaches to detect CNVs, including an Agilent custom-designed CGH array with more than 24 million probes.

The team initially identified 1,237 CNV regions, but used conservative criteria to cut that down to 238 deletions ranging from 277 bases to 196,900 bases and totaling 2.4 megabases, and 77 copy number gains, totalling 7 megabases.

Of these CNVs, 148 of the deletions and 33 of the gains were not in the Database of Genomic Variants and are considered to be novel.

Agilent’s custom microarrays offer the flexibility and accuracy needed to detect CNVs. The platform offers high-quality long oligonucleotide catalog and custom arrays to interrogate any genome at highresolution and accuracy.

Agilent’s custom arrays allow users to easily select the regions of the genome (or the entire genome) they want to target. With 28.7 million in-silicovalidated probes available in eArray, Agilent’s online tool for design custom arrays, researchers can choose what regions, resolution and array format they want for a given study.

Custom arrays are available in all eight formats (1x1M, 2x400K, 4x180K, 8x60K, 1x244K, 2x105K, 4x44K and 8x15K), from Agilent at no additional cost to the user