rs121918122

Positions:

• chr3-186669945-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The ENST00000232003.5(HRG):​c.308G>A​(p.Gly103Glu) variant causes a missense change. The variant allele was found at a frequency of 0.00000141 in 1,419,586 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 Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G103R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: HRG ENST00000232003.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.91

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

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985
• PP5: Variant 3-186669945-G-A is Pathogenic according to our data. Variant chr3-186669945-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 14914.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HRG	NM_000412.5	c.308G>A	p.Gly103Glu	missense_variant	3/7	ENST00000232003.5	NP_000403.1
HRG-AS1	XR_924801.3	n.291-18074C>T		intron_variant, non_coding_transcript_variant
HRG	XM_005247415.5	c.308G>A	p.Gly103Glu	missense_variant	3/7		XP_005247472.1
HRG-AS1	XR_001741059.2	n.291-18074C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HRG	ENST00000232003.5	c.308G>A	p.Gly103Glu	missense_variant	3/7	1	NM_000412.5	ENSP00000232003	P1
HRG-AS1	ENST00000630178.2	n.238+48522C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000141 AC: 2 AN: 1419586 Hom.: 0 Cov.: 25 AF XY: 0.00000141 AC XY: 1 AN XY: 708870

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000253

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.30e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Hereditary thrombophilia due to congenital histidine-rich (poly-L) glycoprotein deficiency Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 01, 1998

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.070
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D
Eigen	Pathogenic	0.85
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.029	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Benign	-0.69	T
MutationAssessor	Pathogenic	3.4	M
MutationTaster	Benign	0.97	A
PrimateAI	Uncertain	0.60	T
PROVEAN	Pathogenic	-8.0	D
REVEL	Uncertain	0.45
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.98
MutPred		0.93		Gain of disorder (P = 0.022);
MVP		0.75
MPC		0.49
ClinPred		1.0	D
GERP RS		5.2
Varity_R		0.78
gMVP		0.55

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: rs121918122; hg19: chr3-186387734;