rs192572056

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_000593.6(TAP1):​c.1601C>T​(p.Thr534Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,612,430 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. T534T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000034 ( 2 hom. )

Consequence

TAP1
NM_000593.6 missense

Scores

1
12
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.712

Publications

2 publications found
Variant links:
Genes affected
TAP1 (HGNC:43): (transporter 1, 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. The protein encoded by this gene is involved in the pumping of degraded cytosolic peptides across the endoplasmic reticulum into the membrane-bound compartment where class I molecules assemble. Mutations in this gene may be associated with ankylosing spondylitis, insulin-dependent diabetes mellitus, and celiac disease. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2014]
PSMB9 (HGNC:9546): (proteasome 20S subunit beta 9) The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the proteasome B-type family, also known as the T1B family, that is a 20S core beta subunit. This gene is located in the class II region of the MHC (major histocompatibility complex). Expression of this gene is induced by gamma interferon and this gene product replaces catalytic subunit 1 (proteasome beta 6 subunit) in the immunoproteasome. Proteolytic processing is required to generate a mature subunit. [provided by RefSeq, Mar 2010]
PSMB9 Gene-Disease associations (from GenCC):
  • proteasome-associated autoinflammatory syndrome 3
    Inheritance: Unknown Classification: LIMITED Submitted by: Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2
High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TAP1NM_000593.6 linkc.1601C>T p.Thr534Met missense_variant Exon 8 of 11 ENST00000354258.5 NP_000584.3 Q03518-1A0A0S2Z5A6X5CKB3
TAP1NM_001292022.2 linkc.998C>T p.Thr333Met missense_variant Exon 8 of 11 NP_001278951.1 Q03518B7Z7P4

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TAP1ENST00000354258.5 linkc.1601C>T p.Thr534Met missense_variant Exon 8 of 11 1 NM_000593.6 ENSP00000346206.5 Q03518-1

Frequencies

GnomAD3 genomes
AF:
0.0000788
AC:
12
AN:
152240
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000482
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000262
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000414
Gnomad FIN
AF:
0.000188
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.0000492
AC:
12
AN:
243986
AF XY:
0.0000601
show subpopulations
Gnomad AFR exome
AF:
0.0000670
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000111
Gnomad FIN exome
AF:
0.000139
Gnomad NFE exome
AF:
0.0000183
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000336
AC:
49
AN:
1460072
Hom.:
2
Cov.:
32
AF XY:
0.0000303
AC XY:
22
AN XY:
726360
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33444
American (AMR)
AF:
0.00
AC:
0
AN:
44618
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39668
South Asian (SAS)
AF:
0.0000929
AC:
8
AN:
86138
European-Finnish (FIN)
AF:
0.000191
AC:
10
AN:
52280
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5760
European-Non Finnish (NFE)
AF:
0.0000126
AC:
14
AN:
1111668
Other (OTH)
AF:
0.000248
AC:
15
AN:
60364
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.454
Heterozygous variant carriers
0
4
7
11
14
18
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
2
4
6
8
10
<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:
0.0000788
AC:
12
AN:
152358
Hom.:
0
Cov.:
33
AF XY:
0.0000671
AC XY:
5
AN XY:
74512
show subpopulations
African (AFR)
AF:
0.0000481
AC:
2
AN:
41584
American (AMR)
AF:
0.000261
AC:
4
AN:
15308
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.000414
AC:
2
AN:
4832
European-Finnish (FIN)
AF:
0.000188
AC:
2
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68032
Other (OTH)
AF:
0.000473
AC:
1
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.496
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000955
Hom.:
0
Bravo
AF:
0.0000189
ExAC
AF:
0.0000594
AC:
7
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

MHC class I deficiency Uncertain:1
Dec 23, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces threonine, which is neutral and polar, with methionine, which is neutral and non-polar, at codon 594 of the TAP1 protein (p.Thr594Met). This variant is present in population databases (rs192572056, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with TAP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 582193). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Possibly Damaging". The methionine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.076
BayesDel_addAF
Benign
-0.046
T
BayesDel_noAF
Uncertain
-0.070
CADD
Benign
18
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.54
D;.
Eigen
Uncertain
0.29
Eigen_PC
Benign
0.21
FATHMM_MKL
Uncertain
0.78
D
LIST_S2
Uncertain
0.96
.;D
M_CAP
Benign
0.053
D
MetaRNN
Uncertain
0.43
T;T
MetaSVM
Uncertain
0.50
D
MutationAssessor
Uncertain
2.5
M;.
PhyloP100
0.71
PrimateAI
Benign
0.35
T
PROVEAN
Pathogenic
-4.6
D;.
REVEL
Uncertain
0.53
Sift
Uncertain
0.0060
D;.
Sift4G
Uncertain
0.038
D;.
Polyphen
1.0
D;.
Vest4
0.42
MVP
0.90
MPC
1.4
ClinPred
0.53
D
GERP RS
2.4
Varity_R
0.078
gMVP
0.71
Mutation Taster
=88/12
polymorphism

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

Other links and lift over

dbSNP: rs192572056; hg19: chr6-32815835; COSMIC: COSV62754632; COSMIC: COSV62754632; API