rs241433

Positions:

• chr6-32831018-C-A
• chr6-32831018-C-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The ENST00000374897.4(TAP2):​c.1273-212G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.577 in 151,944 control chromosomes in the GnomAD database, including 25,641 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.58 (25641 hom., cov: 31)
• Consequence: TAP2 ENST00000374897.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.72

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.605 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TAP2	NM_001290043.2	c.1273-212G>T		intron_variant		ENST00000374897.4	NP_001276972.1
TAP2	NM_018833.3	c.1273-212G>T		intron_variant			NP_061313.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TAP2	ENST00000374897.4	c.1273-212G>T		intron_variant		1	NM_001290043.2	ENSP00000364032	A2

Frequencies

GnomAD3 genomes AF: 0.577 AC: 87644 AN: 151828 Hom.: 25604 Cov.: 31

Gnomad AFR AF: 0.505

Gnomad AMI AF: 0.692

Gnomad AMR AF: 0.565

Gnomad ASJ AF: 0.526

Gnomad EAS AF: 0.558

Gnomad SAS AF: 0.587

Gnomad FIN AF: 0.693

Gnomad MID AF: 0.456

Gnomad NFE AF: 0.610

Gnomad OTH AF: 0.544

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.577 AC: 87732 AN: 151944 Hom.: 25641 Cov.: 31 AF XY: 0.579 AC XY: 43028 AN XY: 74270

Gnomad4 AFR AF: 0.504

Gnomad4 AMR AF: 0.566

Gnomad4 ASJ AF: 0.526

Gnomad4 EAS AF: 0.558

Gnomad4 SAS AF: 0.588

Gnomad4 FIN AF: 0.693

Gnomad4 NFE AF: 0.610

Gnomad4 OTH AF: 0.548

Alfa AF: 0.597 Hom.: 50222

Bravo AF: 0.561

Asia WGS AF: 0.552 AC: 1916 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
CADD	Benign	0.029
DANN	Benign	0.54

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

LitVar

Other links and lift over

dbSNP: rs241433; hg19: chr6-32798795;