Variant Details

Variant: esv2756896

Internal ID

9632355

Landmark

Location Information

Type	Coordinates	Assembly	Other Links
Inner	chr1:248432380..248654081	hg38	UCSC Ensembl
Inner	chr1:248595681..248817382	hg19	UCSC Ensembl
Inner	chr1:246662304..246884005	hg18	UCSC Ensembl
Inner	chr1:244921722..245143423	hg17	UCSC Ensembl

Cytoband

1q44

Allele length

Assembly	Allele length
hg38	221702
hg19	221702
hg18	221702
hg17	221702

Variant Type

CNV loss

Copy Number

Allele State

Allele Origin

Probe Count

Validation Flag

Merged Status

Merged Variants

esv2759015

Supporting Variants

essv3335, essv12021

Samples

NA19141, NA18948

Known Genes

OR2G6, OR2T10, OR2T11, OR2T2, OR2T27, OR2T29, OR2T3, OR2T34, OR2T35, OR2T5

Method

SNP array

Analysis

The algorithm used to call CNVs using the 500K EA platform was developed to accurately define CNV regions using a large set of reference samples and is described in detail in a separate publication (Komura 2006). The algorithm contains three major parts: 1) Intensity pre-processing using an improved version of Genomic Imbalance Map (GIM) (Ishikawa et al. 2005), including probe selection, noise reduction, normalization, and intensity ratio adjustment based on affinity differences between alleles of a SNP, 2) CNV extraction, which identifies CNVs from all pair-wise comparisons using a modified SW-ARRAY, and 3) A copy number inference step which utilizes signal ratios and SNP information to more precisely define CNV boundaries and the copy number within each region.

Platform

Affymetrix GeneChip Early Access Mapping 500K Set Array (250K_Nsp_SNP)

Comments

Reference

Redon_et_al_2006

Pubmed ID

17122850

Accession Number(s)

esv2756896

Frequency

Sample Size	270
Observed Gain	0
Observed Loss	2
Observed Complex	0
Frequency	n/a