X-153905169-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP7BS2

The NM_000054.7(AVPR2):c.24C>T(p.Ser8Ser) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000014 in 1,210,664 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 5 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 1 hem., cov: 25)

Exomes 𝑓: 0.000013 ( 0 hom. 4 hem. )

Consequence

AVPR2
NM_000054.7 splice_region, synonymous

Scores

Splicing: ADA: 0.00005683

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -9.59

Publications

0 publications found

Variant links:

Genes affected

AVPR2 (HGNC:897): (arginine vasopressin receptor 2) This gene encodes the vasopressin receptor, type 2, also known as the V2 receptor, which belongs to the seven-transmembrane-domain G protein-coupled receptor (GPCR) superfamily, and couples to Gs thus stimulating adenylate cyclase. The subfamily that includes the V2 receptor, the V1a and V1b vasopressin receptors, the oxytocin receptor, and isotocin and mesotocin receptors in non-mammals, is well conserved, though several members signal via other G proteins. All bind similar cyclic nonapeptide hormones. The V2 receptor is expressed in the kidney tubule, predominantly in the distal convoluted tubule and collecting ducts, where its primary property is to respond to the pituitary hormone arginine vasopressin (AVP) by stimulating mechanisms that concentrate the urine and maintain water homeostasis in the organism. When the function of this gene is lost, the disease Nephrogenic Diabetes Insipidus (NDI) results. The V2 receptor is also expressed outside the kidney although its tissue localization is uncertain. When these 'extrarenal receptors' are stimulated by infusion of a V2 selective agonist (dDAVP), a variety of clotting factors are released into the bloodstream. The physiologic importance of this property is not known - its absence does not appear to be detrimental in NDI patients. The gene expression has also been described in fetal lung tissue and lung cancer associated with alternative splicing. [provided by RefSeq, Jul 2008]

AVPR2 Gene-Disease associations (from GenCC):

diabetes insipidus, nephrogenic, X-linked
Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
nephrogenic syndrome of inappropriate antidiuresis
Inheritance: XL Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
nephrogenic diabetes insipidus
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

AVPR2 links:

ENSG00000284987 (HGNC:):

ENSG00000284987 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.93).

BP7

Synonymous conserved (PhyloP=-9.59 with no splicing effect.

BS2

High AC in GnomAdExome4 at 14 XL,AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AVPR2	NM_000054.7 link	c.24C>T	p.Ser8Ser	splice_region_variant, synonymous_variant	Exon 2 of 4	ENST00000646375.2	NP_000045.1	P30518-1
AVPR2	NM_001146151.3 link	c.24C>T	p.Ser8Ser	splice_region_variant, synonymous_variant	Exon 2 of 3		NP_001139623.1	P30518-2
AVPR2	NR_027419.2 link	n.464C>T		splice_region_variant, non_coding_transcript_exon_variant	Exon 2 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AVPR2	ENST00000646375.2 link	c.24C>T	p.Ser8Ser	splice_region_variant, synonymous_variant	Exon 2 of 4		NM_000054.7	ENSP00000496396.1		P30518-1
ENSG00000284987	ENST00000646191.1 link	n.96+3901G>A		intron_variant	Intron 1 of 4			ENSP00000493873.1		A0A2R8Y4P6

Frequencies

GnomAD3 genomes

AF:

0.0000355

AC:

AN:

112591

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000646

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000930

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000281

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000273

AC:

AN:

183023

AF XY:

0.0000148

show subpopulations

Gnomad AFR exome

AF:

0.000152

Gnomad AMR exome

AF:

0.0000365

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000123

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000128

AC:

AN:

1098020

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

363456

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26396

American (AMR)

AF:

0.0000568

AC:

AN:

35198

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19381

East Asian (EAS)

AF:

0.00

AC:

AN:

30205

South Asian (SAS)

AF:

0.0000185

AC:

AN:

54141

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40527

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4101

European-Non Finnish (NFE)

AF:

0.0000107

AC:

AN:

841994

Other (OTH)

AF:

0.0000434

AC:

AN:

46077

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000266

AC:

AN:

112644

Hom.:

Cov.:

AF XY:

0.0000287

AC XY:

AN XY:

34810

show subpopulations

African (AFR)

AF:

0.0000322

AC:

AN:

31044

American (AMR)

AF:

0.0000929

AC:

AN:

10762

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2651

East Asian (EAS)

AF:

0.000282

AC:

AN:

3550

South Asian (SAS)

AF:

0.00

AC:

AN:

2733

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6283

Middle Eastern (MID)

AF:

0.00

AC:

AN:

218

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53191

Other (OTH)

AF:

0.00

AC:

AN:

1523

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000480

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jul 31, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change affects codon 8 of the AVPR2 mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the AVPR2 protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs201419746, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with AVPR2-related conditions. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.93

CADD

Benign

0.0010

(source)

DANN

Benign

0.83

PhyloP100

-9.6

PromoterAI

-0.095

Neutral

(source)

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000057

dbscSNV1_RF

Benign

0.056

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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X-153905169-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over