Posts by Tags

1000 genomes project

BGI-seq

Genotype concordance between Illumina, Complete Genomics and BGI-seq platforms

less than 1 minute read

Published:

Based on PCA, an overview of the genotype concordance between Illumina ultra high-coverage (~200x), Illumina high-coverage (~30x), Illumina low-coverage (~7x), Complete Genomics high-coverage (versions 2.0 and 2.2, from ~30x to ~87x) and BGIseq-500 high-coverage (PE100, ~37x) platforms/sequencing-runs. For this purpose I used 12 reference samples for which there are available data in at least two or more of the previous technologies.

Complete Genomics

Genotype concordance between Illumina, Complete Genomics and BGI-seq platforms

less than 1 minute read

Published:

Based on PCA, an overview of the genotype concordance between Illumina ultra high-coverage (~200x), Illumina high-coverage (~30x), Illumina low-coverage (~7x), Complete Genomics high-coverage (versions 2.0 and 2.2, from ~30x to ~87x) and BGIseq-500 high-coverage (PE100, ~37x) platforms/sequencing-runs. For this purpose I used 12 reference samples for which there are available data in at least two or more of the previous technologies.

Diversity panel

Drosophila

GATK

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

HLA

Illumina

Genotype concordance between Illumina, Complete Genomics and BGI-seq platforms

less than 1 minute read

Published:

Based on PCA, an overview of the genotype concordance between Illumina ultra high-coverage (~200x), Illumina high-coverage (~30x), Illumina low-coverage (~7x), Complete Genomics high-coverage (versions 2.0 and 2.2, from ~30x to ~87x) and BGIseq-500 high-coverage (PE100, ~37x) platforms/sequencing-runs. For this purpose I used 12 reference samples for which there are available data in at least two or more of the previous technologies.

Illumina array

PCR-Free

Polaris data

Polaris project

Sanger sequening

Simons project

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

Y chromosome

adaptation

admixture

ascertainment bias

bwa

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

concordance

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

copy number variation

gene expression evolution

genotype concordance

Genotype concordance between Illumina, Complete Genomics and BGI-seq platforms

less than 1 minute read

Published:

Based on PCA, an overview of the genotype concordance between Illumina ultra high-coverage (~200x), Illumina high-coverage (~30x), Illumina low-coverage (~7x), Complete Genomics high-coverage (versions 2.0 and 2.2, from ~30x to ~87x) and BGIseq-500 high-coverage (PE100, ~37x) platforms/sequencing-runs. For this purpose I used 12 reference samples for which there are available data in at least two or more of the previous technologies.

genotyping

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

high-coverage data

human origins array

low coverage

pca

Genotype concordance between Illumina, Complete Genomics and BGI-seq platforms

less than 1 minute read

Published:

Based on PCA, an overview of the genotype concordance between Illumina ultra high-coverage (~200x), Illumina high-coverage (~30x), Illumina low-coverage (~7x), Complete Genomics high-coverage (versions 2.0 and 2.2, from ~30x to ~87x) and BGIseq-500 high-coverage (PE100, ~37x) platforms/sequencing-runs. For this purpose I used 12 reference samples for which there are available data in at least two or more of the previous technologies.

positive selection

priors

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

read depth

reference bias

Differences between GATK best practices with and without using free-of-reference bias priors

3 minute read

Published:

In the supplementary section 1 of the Simons Genome Diversity Project, Mallik et al. introduce the use of non-standard (not part of the best practises and default setting of GATK) snp calling priors. The default snp calling priors in GATK they write, “have built-in priors for Bayesian SNP calling that assume that the site is more likely to be homozygous for the reference allele than homozygous for the variant allele. When there is ambiguity in a heterozygous, GATK prefers the reference homozygous. This is a reference bias, and while this bias is not typically problematic for medical studies*, it can complicate interpretation of population genetics signals … “

rna-seq

snp selection

structural variation

transcriptomes