rs140969189

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4BS1_Supporting

The NM_001290043.2(TAP2):c.1588G>A(p.Asp530Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00011 in 1,613,124 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

TAP2
NM_001290043.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 7.88

Publications

2 publications found

Variant links:

Genes affected

TAP2 (HGNC:44): (transporter 2, ATP binding cassette subfamily B member) The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance. This gene is located 7 kb telomeric to gene family member ABCB2. The protein encoded by this gene is involved in antigen presentation. This protein forms a heterodimer with ABCB2 in order to transport peptides from the cytoplasm to the endoplasmic reticulum. Mutations in this gene may be associated with ankylosing spondylitis, insulin-dependent diabetes mellitus, and celiac disease. Alternative splicing of this gene produces products which differ in peptide selectivity and level of restoration of surface expression of MHC class I molecules. [provided by RefSeq, Feb 2014]

TAP2 Gene-Disease associations (from GenCC):

MHC class I deficiency
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Orphanet, Ambry Genetics
MHC class I deficiency 1
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia

TAP2 links:

ENSG00000250264 (HGNC:):

ENSG00000250264 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.29183894).

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000138 (21/152326) while in subpopulation AMR AF = 0.00098 (15/15300). AF 95% confidence interval is 0.000604. There are 0 homozygotes in GnomAd4. There are 10 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001290043.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TAP2	NM_001290043.2	MANE Select	c.1588G>A	p.Asp530Asn	missense	Exon 9 of 12	NP_001276972.1	Q5JNW1
	TAP2	NM_018833.3		c.1588G>A	p.Asp530Asn	missense	Exon 9 of 12	NP_061313.2	Q9UP03

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TAP2	ENST00000374897.4	TSL:1 MANE Select	c.1588G>A	p.Asp530Asn	missense	Exon 9 of 12	ENSP00000364032.3	Q03519-1
ENSG00000250264	ENST00000452392.2	TSL:2	c.1588G>A	p.Asp530Asn	missense	Exon 9 of 15	ENSP00000391806.2	E7ENX8
TAP2	ENST00000698449.1		c.1621G>A	p.Asp541Asn	missense	Exon 10 of 13	ENSP00000513734.1	A0A8V8TNJ0

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000982

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000211

AC:

AN:

246478

AF XY:

0.000186

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000841

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000145

Gnomad OTH exome

AF:

0.00115

GnomAD4 exome

AF:

0.000107

AC:

157

AN:

1460798

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

726716

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00112

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52336

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000845

AC:

AN:

1112010

Other (OTH)

AF:

0.000182

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000138

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41564

American (AMR)

AF:

0.000980

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68024

Other (OTH)

AF:

0.00142

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000774

Hom.:

Bravo

AF:

0.000280

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000185

AC:

ExAC

AF:

0.000254

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

MHC class I deficiency (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.11

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.57

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.29

MetaSVM

Uncertain

0.64

MutationAssessor

Benign

1.0

PhyloP100

7.9

PrimateAI

Uncertain

0.53

PROVEAN

Pathogenic

-4.5

REVEL

Pathogenic

0.68

Sift

Benign

0.054

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.83

MVP

0.80

MPC

1.3

ClinPred

0.28

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.48

gMVP

0.74

Mutation Taster

=58/42

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over