Variant Details

Variant: esv2758950

Internal ID

9981095

Landmark

Location Information

Type	Coordinates	Assembly	Other Links
Inner	chr1:94654234..94693047	hg38	UCSC Ensembl
Inner	chr1:95119790..95158603	hg19	UCSC Ensembl
Inner	chr1:94892378..94931191	hg18	UCSC Ensembl
Inner	chr1:94831811..94870624	hg17	UCSC Ensembl

Cytoband

1p21.3

Allele length

Assembly	Allele length
hg38	38814
hg19	38814
hg18	38814
hg17	38814

Variant Type

CNV loss

Copy Number

Allele State

Allele Origin

Probe Count

Validation Flag

Merged Status

Merged Variants

Supporting Variants

esv2756851

Samples

NA19141, NA18855, NA18503, NA19142, NA19153

Known Genes

LINC01057

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)

esv2758950

Frequency

Sample Size	270
Observed Gain	0
Observed Loss	5
Observed Complex	0
Frequency	n/a