20-62216634-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_007232.3(HRH3):c.710G>A(p.Arg237Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000558 in 1,612,234 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000057 ( 0 hom. )

Consequence

HRH3
NM_007232.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.52

Variant links:

Genes affected

HRH3 (HGNC:5184): (histamine receptor H3) Histamine is a ubiquitous messenger molecule released from mast cells, enterochromaffin-like cells, and neurons. Its various actions are mediated by histamine receptors H1, H2, H3 and H4. This gene encodes one of the histamine receptors (H3) which belongs to the family 1 of G protein-coupled receptors. It is an integral membrane protein and can regulate neurotransmitter release. This receptor can also increase voltage-dependent calcium current in smooth muscles and innervates the blood vessels and the heart in cardiovascular system. [provided by RefSeq, Jul 2008]

HRH3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05620089).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
HRH3	NM_007232.3 linkuse as main transcript	c.710G>A	p.Arg237Gln	missense_variant	3/3	ENST00000340177.10
HRH3	XM_005260266.4 linkuse as main transcript	c.710G>A	p.Arg237Gln	missense_variant	3/4
HRH3	XM_017027623.2 linkuse as main transcript	c.668G>A	p.Arg223Gln	missense_variant	3/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HRH3	ENST00000340177.10 linkuse as main transcript	c.710G>A	p.Arg237Gln	missense_variant	3/3	1	NM_007232.3	P1	Q9Y5N1-1
HRH3	ENST00000317393.10 linkuse as main transcript	c.710G>A	p.Arg237Gln	missense_variant	3/5	1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000106

AC:

AN:

245152

Hom.:

AF XY:

0.000135

AC XY:

AN XY:

133806

show subpopulations

Gnomad AFR exome

AF:

0.000256

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000621

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000919

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000568

AC:

AN:

1460030

Hom.:

Cov.:

AF XY:

0.0000785

AC XY:

AN XY:

726284

show subpopulations

Gnomad4 AFR exome

AF:

0.000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000545

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000198

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.0000965

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000416

ExAC

AF:

0.000157

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 30, 2022

The c.710G>A (p.R237Q) alteration is located in exon 3 (coding exon 3) of the HRH3 gene. This alteration results from a G to A substitution at nucleotide position 710, causing the arginine (R) at amino acid position 237 to be replaced by a glutamine (Q). 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

Benign

0.075

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.45

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.073

T;.

Eigen

Benign

-0.61

Eigen_PC

Benign

-0.56

FATHMM_MKL

Benign

0.43

LIST_S2

Benign

0.73

T;T

M_CAP

Benign

0.034

MetaRNN

Benign

0.056

T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.97

L;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-0.67

N;N

REVEL

Benign

0.032

Sift

Benign

0.35

T;T

Sift4G

Benign

0.62

T;T

Polyphen

0.022

B;.

Vest4

0.065

MutPred

0.35

Loss of methylation at R237 (P = 0.0355);Loss of methylation at R237 (P = 0.0355);

MVP

0.74

MPC

0.47

ClinPred

0.015

GERP RS

2.4

Varity_R

0.10

gMVP

0.68

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