Variant 6-31271872-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_002117.6(HLA-C):c.74-4C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.000012 ( 0 hom., cov: 13)

Exomes 𝑓: 0.000013 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

HLA-C
NM_002117.6 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.002415

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: -0.897

Variant links:

Genes affected

HLA-C (HGNC:4933): (major histocompatibility complex, class I, C) HLA-C belongs to the HLA class I heavy chain paralogues. This class I molecule is a heterodimer consisting of a heavy chain and a light chain (beta-2 microglobulin). The heavy chain is anchored in the membrane. Class I molecules play a central role in the immune system by presenting peptides derived from endoplasmic reticulum lumen. They are expressed in nearly all cells. The heavy chain is approximately 45 kDa and its gene contains 8 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the alpha1 and alpha2 domain, which both bind the peptide, exon 4 encodes the alpha3 domain, exon 5 encodes the transmembrane region, and exons 6 and 7 encode the cytoplasmic tail. Polymorphisms within exon 2 and exon 3 are responsible for the peptide binding specificity of each class one molecule. Typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. About 6000 HLA-C alleles have been described. The HLA system plays an important role in the occurrence and outcome of infectious diseases, including those caused by the malaria parasite, the human immunodeficiency virus (HIV), and the severe acute respiratory syndrome coronavirus (SARS-CoV). The structural spike and the nucleocapsid proteins of the novel coronavirus SARS-CoV-2, which causes coronavirus disease 2019 (COVID-19), are reported to contain multiple Class I epitopes with predicted HLA restrictions. Individual HLA genetic variation may help explain different immune responses to a virus across a population.[provided by RefSeq, Aug 2020]

HLA-C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.61).

BP6

Variant 6-31271872-G-A is Benign according to our data. Variant chr6-31271872-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2681312.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HLA-C	NM_002117.6 linkuse as main transcript	c.74-4C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000376228.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HLA-C	ENST00000376228.10 linkuse as main transcript	c.74-4C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant			NM_002117.6	P4	P10321-1

Frequencies

GnomAD3 genomes

AF:

0.0000117

AC:

AN:

85356

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000502

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000127

AC:

AN:

1177502

Hom.:

Cov.:

AF XY:

0.0000102

AC XY:

AN XY:

586954

show subpopulations

Gnomad4 AFR exome

AF:

0.0000833

Gnomad4 AMR exome

AF:

0.000116

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000368

Gnomad4 SAS exome

AF:

0.0000399

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000330

Gnomad4 OTH exome

AF:

0.0000419

GnomAD4 genome

AF:

0.0000117

AC:

AN:

85410

Hom.:

Cov.:

AF XY:

0.0000244

AC XY:

AN XY:

40980

show subpopulations

Gnomad4 AFR

AF:

0.0000500

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000169

Hom.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

EBV-positive nodal T- and NK-cell lymphoma

Benign:1

Likely benign, no assertion criteria provided

research

Department of Clinical Pathology, School of Medicine, Fujita Health University

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Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.61

CADD

Benign

DANN

Benign

0.91

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0024

dbscSNV1_RF

Benign

0.012

SpliceAI score (max)

0.030

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over