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Table 1 Description of tags used to annotate variants and the standards of corresponding metrics

From: VariFAST: a variant filter by automated scoring based on tagged-signatures

Tag

Standard of metric

Description

LC

lcr > 0

Low coverage in track

LVF

\( vafr\ge 1-{thr}_{vaf}^{\ast } \)

Low variant allele frequency

LM

(lm ≥ 0.2)  (dl ≥ 2)

Low mapping quality

MM

mm ≥ 1

Too many mismatches around variant

HDR

hdr ≥ 1

The variant is supported by reads that have other recurrent mismatches

HE

nh ≥ 0.9

Near head

EN

ne ≥ 0.9

Near end

NI

ni ≥ 0.9

Near insertion

ND

nd ≥ 0.9

Near deletion

D

dir ≥ 0.9

Almost supported reads with the same direction

SSE

sse ≥ 0.9

Almost supported reads with the same start and end

MV

(mv ≥ 0.2)  (dmv ≥ 2)

Variant locus has read support for different alleles

RR

r = 1

Near repeat region

RI

ri = 1

Insertion and near repeat region and insert nucleotides are the same as minimum repeat units of reference

AO

li = 1

Big insertion and insert nucleotide are the same as the reference

SI

si ≥ 0.9

Supported reads are short insert

(NCN)

lncr = 1

No coverage in normal track

(LCN)

1 > lncr > 0

Low coverage in normal track

(VN)

(nvaf ≥ 0.1 × thr)  (dnormal ≥ 2)

Variant occur in normal track

  1. thrvaf is the requirement for minimal variant allele frequency set by users. The tags in brackets are used for somatic variants