chr6-33304189-G-A

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_StrongBP6_ModerateBP7BA1

The NM_003190.5(TAPBP):​c.1239C>T​(p.Ser413=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00647 in 1,613,574 control chromosomes in the GnomAD database, including 632 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.032 ( 294 hom., cov: 31)
Exomes 𝑓: 0.0038 ( 338 hom. )

Consequence

TAPBP
NM_003190.5 synonymous

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: -0.967
Variant links:
Genes affected
TAPBP (HGNC:11566): (TAP binding protein) This gene encodes a transmembrane glycoprotein which mediates interaction between newly assembled major histocompatibility complex (MHC) class I molecules and the transporter associated with antigen processing (TAP), which is required for the transport of antigenic peptides across the endoplasmic reticulum membrane. This interaction is essential for optimal peptide loading on the MHC class I molecule. Up to four complexes of MHC class I and this protein may be bound to a single TAP molecule. This protein contains a C-terminal double-lysine motif (KKKAE) known to maintain membrane proteins in the endoplasmic reticulum. This gene lies within the major histocompatibility complex on chromosome 6. Alternative splicing results in three transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.81).
BP6
Variant 6-33304189-G-A is Benign according to our data. Variant chr6-33304189-G-A is described in ClinVar as [Benign]. Clinvar id is 466396.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=-0.967 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.109 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TAPBPNM_003190.5 linkuse as main transcriptc.1239C>T p.Ser413= synonymous_variant 6/8 ENST00000434618.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TAPBPENST00000434618.7 linkuse as main transcriptc.1239C>T p.Ser413= synonymous_variant 6/81 NM_003190.5 P2O15533-1

Frequencies

GnomAD3 genomes
AF:
0.0322
AC:
4878
AN:
151674
Hom.:
293
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.111
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0129
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00166
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000427
Gnomad OTH
AF:
0.0246
GnomAD3 exomes
AF:
0.00869
AC:
2181
AN:
251040
Hom.:
111
AF XY:
0.00661
AC XY:
897
AN XY:
135708
show subpopulations
Gnomad AFR exome
AF:
0.118
Gnomad AMR exome
AF:
0.00495
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00137
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000256
Gnomad OTH exome
AF:
0.00278
GnomAD4 exome
AF:
0.00380
AC:
5557
AN:
1461782
Hom.:
338
Cov.:
32
AF XY:
0.00336
AC XY:
2442
AN XY:
727192
show subpopulations
Gnomad4 AFR exome
AF:
0.133
Gnomad4 AMR exome
AF:
0.00539
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00125
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000245
Gnomad4 OTH exome
AF:
0.00710
GnomAD4 genome
AF:
0.0322
AC:
4890
AN:
151792
Hom.:
294
Cov.:
31
AF XY:
0.0314
AC XY:
2332
AN XY:
74172
show subpopulations
Gnomad4 AFR
AF:
0.111
Gnomad4 AMR
AF:
0.0129
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00146
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000427
Gnomad4 OTH
AF:
0.0244
Alfa
AF:
0.0135
Hom.:
43
Bravo
AF:
0.0380
Asia WGS
AF:
0.00577
AC:
21
AN:
3478
EpiCase
AF:
0.000273
EpiControl
AF:
0.000119

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

MHC class I deficiency Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 29, 2024- -
TAPBP-related disorder Benign:1
Benign, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesJul 08, 2019This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.81
CADD
Benign
1.7
DANN
Benign
0.48

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.10
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs34132052; hg19: chr6-33271966; API