dbSNP rs41562616: HLA-G:p.His212Gln (chr6-29829434-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001384290.1(HLA-G):c.636C>A(p.His212Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,454 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

HLA-G
NM_001384290.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.85

Publications

7 publications found

Variant links:

Genes affected

HLA-G (HGNC:4964): (major histocompatibility complex, class I, G) HLA-G 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. HLA-G is expressed on fetal derived placental 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 exon 6 encodes the cytoplasmic tail. [provided by RefSeq, Jul 2008]

HLA-G links:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.060674757).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HLA-G	NM_001384290.1 link	c.636C>A	p.His212Gln	missense_variant	Exon 4 of 7	ENST00000360323.11	NP_001371219.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HLA-G	ENST00000360323.11 link	c.636C>A	p.His212Gln	missense_variant	Exon 4 of 7	6	NM_001384290.1	ENSP00000353472.6		P17693-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461454

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727010

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26116

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111690

Other (OTH)

AF:

0.00

AC:

AN:

60362

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

0.015

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.066

.;T;T;T

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.0030

LIST_S2

Benign

0.52

T;T;.;.

M_CAP

Benign

0.00078

MetaRNN

Benign

0.061

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

2.0

.;M;M;.

PhyloP100

-2.9

PrimateAI

Benign

0.30

PROVEAN

Pathogenic

-4.9

D;D;D;D

REVEL

Benign

0.031

Sift

Pathogenic

0.0

D;D;D;T

Sift4G

Uncertain

0.044

D;D;D;T

Polyphen

0.96

P;P;P;B

Vest4

0.092

MutPred

0.40

Gain of glycosylation at P214 (P = 0.1055);.;.;.;

MVP

0.076

MPC

0.69

ClinPred

0.80

GERP RS

-3.4

Varity_R

0.33

gMVP

0.066

Mutation Taster

=95/5

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over