Variant Details

Variant: nsv470904

Internal ID

15210777

Landmark

Location Information

Type	Coordinates	Assembly	Other Links
Inner	chr21:43731164..43838166	hg38	UCSC Ensembl
Inner	chr21:45151045..45258047	hg19	UCSC Ensembl
Inner	chr21:43975473..44082475	hg18	UCSC Ensembl

Cytoband

21q22.3

Allele length

Assembly	Allele length
hg38	107003
hg19	107003
hg18	107003

Variant Type

CNV loss

Copy Number

Allele State

Allele Origin

Probe Count

Validation Flag

Merged Status

Merged Variants

Supporting Variants

nssv544789, nssv544792, nssv544793, nssv544791, nssv544790

Samples

HGDP00288, HGDP00661, HGDP00978, HGDP00657, HGDP00825

Known Genes

CSTB, LOC284837, PDXK, RRP1

Method

SNP array

Analysis

We used the previously validated default quality control criteria, excluding samples with a log R ratio standard deviation of >0.28, a median B allele frequency of >0.55 or <0.45, or a B allele frequency drift of >0.002 (for more details see Wang et al. 2007). As the PennCNV algorithm is more sensitive and specific to CNVs covering greater numbers of SNPs in the HumanHap550 array, use of a minimum number of SNPs in CNV detection increases the reliability of CNV calls (with a consequent reduction in calls per individual). We set 10 SNPs as the minimum detection threshold in the algorithm.

Platform

Illumina HumanHap550 Genotyping BeadChip v3

Comments

Reference

Jakobsson_et_al_2008

Pubmed ID

18288195

Accession Number(s)

nsv470904

Frequency

Sample Size	443
Observed Gain	0
Observed Loss	5
Observed Complex	0
Frequency	n/a