Table 1.
Item Name | Annotation Sources* | Implementation Notes |
---|---|---|
Identifier (unique for each variant in candidate list) | Sequencing/Assembling/Genotyping Facility**, GATK | |
Chromosome Number | Sequencing/Assembling/Genotyping Facility**, GATK | |
Variant Position Within Chromosome | Sequencing/Assembling/Genotyping Facility**, GATK | Positions are given in the context of a specific reference genome, e.g. NCBI hg18/build36 |
Reference allele | Sequencing/Asembling/Genotyping Facility**, GATK | |
Variant allele | Sequencing/Asembling/Genotyping Facility**, GATK | |
Variant type (exon, intron, etc.) | Annovar, SeattleSeq, GATK, VAAST | |
Gene name | Annovar, SeattleSeq, GATK, VAAST | |
Transcript | Annovar, SeattleSeq, GATK, VAAST | |
Strand | Annovar, SeattleSeq, GATK, VAAST | |
Reference Amino Acid | Annovar, SeattleSeq, GATK, VAAST | |
Variant Amino Acid | Annovar, SeattleSeq, GATK, VAAST | |
Amino Acid Position | Annovar, SeattleSeq, GATK, VAAST | |
Pathogenicity Score | Galaxy, GATK, PolyPhen, many others | NISC provides “CDPred” score |
Coverage | Samtools, Bed tools, GATK | |
Quality Measure | Samtools, GATK | NISC provides MPG and MPG/coverage scores. Quality scores should be calibrated to a specific sequencing center/source |
Mendelian Consistency for various genetic models | Manual inspection with spreadsheet, VAR-MD, VAAST | NISC provides annotation with in-house software |
Compound Heterozygote Pairing for Autosomal Recessive Genetic Model | Manual inspection with spreadsheet | NISC provides annotation with in-house software |
These are incomplete lists. A broad and rapidly expanding list of tools is available.
Often a collaborating sequencing facility can provide some or all of the annotations listed here. Most of the annotations can be carried out separately if needed. However, synergistic benefits can accrue if assembling and genotyping are performed by the same team.