Variant Details

Variant: essv11350

Internal ID

9608504

Landmark

Location Information

Type	Coordinates	Assembly	Other Links
Inner	chr1:148853549..148928116	hg38	UCSC Ensembl
Outer	chr1:146056907..148933491	hg38	UCSC Ensembl
Inner	chr1:144956373..145030865	hg19	UCSC Ensembl
Outer	chr1:144950998..145378096	hg19	UCSC Ensembl
Inner	chr1:143667730..143742222	hg18	UCSC Ensembl
Outer	chr1:143662355..144089453	hg18	UCSC Ensembl
Inner	chr1:142445417..142519909	hg17	UCSC Ensembl
Outer	chr1:142440042..142867140	hg17	UCSC Ensembl

Cytoband

1q21.1

Allele length

Assembly	Allele length
hg38	2876585
hg19	427099
hg18	427099
hg17	427099

Variant Type

CNV loss

Copy Number

Allele State

Allele Origin

Probe Count

Validation Flag

Merged Status

Merged Variants

esv2756861

Supporting Variants

Samples

NA19128

Known Genes

LOC100288142, LOC101929780, NBPF10, NBPF12, NBPF9, NOTCH2NL, PDE4DIP, SEC22B

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)

essv11350

Frequency

Sample Size	270
Observed Gain	0
Observed Loss	1
Observed Complex	0
Frequency	n/a