Variant Details

Variant: nsv470908

Internal ID

15210781

Landmark

Location Information

Type	Coordinates	Assembly	Other Links
Inner	chr21:44878954..44915665	hg38	UCSC Ensembl
Inner	chr21:46298869..46335580	hg19	UCSC Ensembl
Inner	chr21:45123297..45160008	hg18	UCSC Ensembl

Cytoband

21q22.3

Allele length

Assembly	Allele length
hg38	36712
hg19	36712
hg18	36712

Variant Type

CNV loss

Copy Number

Allele State

Allele Origin

Probe Count

Validation Flag

Merged Status

Merged Variants

Supporting Variants

nssv544801, nssv544800

Samples

HGDP00661, HGDP00657

Known Genes

ITGB2

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)

nsv470908

Frequency

Sample Size	443
Observed Gain	0
Observed Loss	2
Observed Complex	0
Frequency	n/a