Genetic Variant HRG:p.Tyr68His (chr3-186668953-T-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000412.5(HRG):c.202T>C(p.Tyr68His) variant causes a missense change. The variant allele was found at a frequency of 0.00000207 in 1,451,410 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

HRG
NM_000412.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.92

Variant links:

Genes affected

HRG (HGNC:5181): (histidine rich glycoprotein) This histidine-rich glycoprotein contains two cystatin-like domains and is located in plasma and platelets. The physiological function has not been determined but it is known that the protein binds heme, dyes and divalent metal ions. The encoded protein also has a peptide that displays antimicrobial activity against C. albicans, E. coli, S. aureus, P. aeruginosa, and E. faecalis. It can inhibit rosette formation and interacts with heparin, thrombospondin and plasminogen. Two of the protein's effects, the inhibition of fibrinolysis and the reduction of inhibition of coagulation, indicate a potential prothrombotic effect. Mutations in this gene lead to thrombophilia due to abnormal histidine-rich glycoprotein levels. [provided by RefSeq, Nov 2014]

HRG links:

HRG-AS1 (HGNC:55915): (HRG and FETUB antisense RNA 1)

HRG-AS1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.886

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HRG	NM_000412.5 link	c.202T>C	p.Tyr68His	missense_variant	Exon 2 of 7	ENST00000232003.5	NP_000403.1	P04196
HRG	XM_005247415.5 link	c.202T>C	p.Tyr68His	missense_variant	Exon 2 of 7		XP_005247472.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HRG	ENST00000232003.5 link	c.202T>C	p.Tyr68His	missense_variant	Exon 2 of 7	1	NM_000412.5	ENSP00000232003.4		P04196

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251256

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135812

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000207

AC:

AN:

1451410

Hom.:

Cov.:

AF XY:

0.00000277

AC XY:

AN XY:

722962

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 13, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.202T>C (p.Y68H) alteration is located in exon 2 (coding exon 2) of the HRG gene. This alteration results from a T to C substitution at nucleotide position 202, causing the tyrosine (Y) at amino acid position 68 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.69

BayesDel_addAF

Benign

-0.075

BayesDel_noAF

Benign

-0.12

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.27

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.79

M_CAP

Benign

0.017

MetaRNN

Pathogenic

0.89

MetaSVM

Benign

-0.51

MutationAssessor

Pathogenic

3.3

PrimateAI

Uncertain

0.54

PROVEAN

Pathogenic

-4.6

REVEL

Uncertain

0.30

Sift

Uncertain

0.015

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.89

MutPred

0.57

Loss of phosphorylation at Y68 (P = 0.0853);

MVP

0.49

MPC

0.36

ClinPred

0.99

GERP RS

4.6

Varity_R

0.29

gMVP

0.41

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

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