Variant 6-55263796-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001384272.1(HCRTR2):c.736A>G(p.Ile246Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,458,718 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

HCRTR2
NM_001384272.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.82

Variant links:

Genes affected

HCRTR2 (HGNC:4849): (hypocretin receptor 2) The protein encoded by this gene is a G-protein coupled receptor involved in the regulation of feeding behavior. The encoded protein binds the hypothalamic neuropeptides orexin A and orexin B. A related gene (HCRTR1) encodes a G-protein coupled receptor that selectively binds orexin A. [provided by RefSeq, Jan 2009]

HCRTR2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.79

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
HCRTR2	NM_001384272.1 linkuse as main transcript	c.736A>G	p.Ile246Val	missense_variant	4/7	ENST00000370862.4
HCRTR2	NM_001526.5 linkuse as main transcript	c.736A>G	p.Ile246Val	missense_variant	5/8
HCRTR2	XM_017010798.2 linkuse as main transcript	c.736A>G	p.Ile246Val	missense_variant	5/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HCRTR2	ENST00000370862.4 linkuse as main transcript	c.736A>G	p.Ile246Val	missense_variant	4/7	1	NM_001384272.1	P1
HCRTR2	ENST00000615358.4 linkuse as main transcript	c.736A>G	p.Ile246Val	missense_variant	5/8	1		P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000400

AC:

AN:

249944

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135102

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000546

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:

0.00000206

AC:

AN:

1458718

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725886

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

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

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 27, 2023

The c.736A>G (p.I246V) alteration is located in exon 4 (coding exon 4) of the HCRTR2 gene. This alteration results from a A to G substitution at nucleotide position 736, causing the isoleucine (I) at amino acid position 246 to be replaced by a valine (V). 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

0.72

BayesDel_addAF

Benign

0.0017

BayesDel_noAF

Uncertain

-0.070

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

T;T

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

D;.

M_CAP

Benign

0.021

MetaRNN

Pathogenic

0.79

D;D

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.3

L;L

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.71

Sift4G

Benign

0.18

T;T

Polyphen

0.54

P;P

Vest4

0.75

MutPred

0.63

Loss of methylation at K249 (P = 0.0995);Loss of methylation at K249 (P = 0.0995);

MVP

0.81

MPC

0.83

ClinPred

0.79

GERP RS

5.8

Varity_R

0.27

gMVP

0.56

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