Small Variants

When available, the Illumina Annotation Engine provides the following fields for each small variant.

Metric

Description

Gene (HGVS)

Human Genome Variation Society (HGVS) gene notation.

Chromosome

The chromosome where the SNV, insertion, or deletion is detected.

Genomic Position

The chromosome coordinate where the SNV, insertion, or deletion is detected.

Reference Call

The hg19 reference call for the respective chromosome:position.

Alternative Call

The observed variant call for the respective chromosome:position.

P-Dot Notation

HGVS protein change notation.

C-Dot Notation

HGVS nucleotide change notation.

Consequence

Consequence on protein function.

Allele Frequency

Fraction of reads in which the variant is detected.

COSMIC ID

Catalogue of Somatic Mutations in Cancer (COSMIC) ID for this variant.

Affected Exon

The exons affected by the variant. For example, 4-6/7 indicates that exons 4, 5, and 6 are affected, and that the respective transcript contains a total of seven exons.

Depth

Unique read count for the detected variant.

GQX Value

Genotype quality.