chr3-8767284-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000916.4(OXTR):c.904G>A(p.Ala302Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000257 in 1,556,062 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

OXTR
NM_000916.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0690

Publications

0 publications found

Variant links:

Genes affected

OXTR (HGNC:8529): (oxytocin receptor) The protein encoded by this gene belongs to the G-protein coupled receptor family and acts as a receptor for oxytocin. Its activity is mediated by G proteins which activate a phosphatidylinositol-calcium second messenger system. The oxytocin-oxytocin receptor system plays an important role in the uterus during parturition. [provided by RefSeq, Jul 2008]

OXTR links:

CAV3 (HGNC:1529): (caveolin 3) This gene encodes a caveolin family member, which functions as a component of the caveolae plasma membranes found in most cell types. Caveolin proteins are proposed to be scaffolding proteins for organizing and concentrating certain caveolin-interacting molecules. Mutations identified in this gene lead to interference with protein oligomerization or intra-cellular routing, disrupting caveolae formation and resulting in Limb-Girdle muscular dystrophy type-1C (LGMD-1C), hyperCKemia or rippling muscle disease (RMD). Alternative splicing has been identified for this locus, with inclusion or exclusion of a differentially spliced intron. In addition, transcripts utilize multiple polyA sites and contain two potential translation initiation sites. [provided by RefSeq, Jul 2008]

CAV3 Gene-Disease associations (from GenCC):

caveolinopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal dominant limb-girdle muscular dystrophy type 1C
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
long QT syndrome 9
Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
rippling muscle disease 2
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
distal myopathy, Tateyama type
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
inherited rippling muscle disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Brugada syndrome
Inheritance: AD Classification: LIMITED Submitted by: Genomics England PanelApp
hypertrophic cardiomyopathy 1
Inheritance: AD Classification: LIMITED Submitted by: PanelApp Australia
long QT syndrome
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

CAV3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.049621105).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OXTR	NM_000916.4 link	c.904G>A	p.Ala302Thr	missense_variant	Exon 3 of 4	ENST00000316793.8	NP_000907.2	P30559B2R9L7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OXTR	ENST00000316793.8 link	c.904G>A	p.Ala302Thr	missense_variant	Exon 3 of 4	1	NM_000916.4	ENSP00000324270.2		P30559
CAV3	ENST00000472766.1 link	n.156-10193C>T		intron_variant	Intron 1 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000481

AC:

AN:

207854

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000396

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000214

AC:

AN:

1403834

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

693326

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

30772

American (AMR)

AF:

0.0000285

AC:

AN:

35040

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23044

East Asian (EAS)

AF:

0.00

AC:

AN:

38554

South Asian (SAS)

AF:

0.00

AC:

AN:

77212

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51712

Middle Eastern (MID)

AF:

0.000182

AC:

AN:

5502

European-Non Finnish (NFE)

AF:

9.22e-7

AC:

AN:

1084336

Other (OTH)

AF:

0.00

AC:

AN:

57662

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74378

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41464

American (AMR)

AF:

0.0000654

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 14, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.904G>A (p.A302T) alteration is located in exon 3 (coding exon 1) of the OXTR gene. This alteration results from a G to A substitution at nucleotide position 904, causing the alanine (A) at amino acid position 302 to be replaced by a threonine (T). 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

0.073

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.052

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.24

M_CAP

Benign

0.0047

MetaRNN

Benign

0.050

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.34

PhyloP100

0.069

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.090

REVEL

Benign

0.014

Sift

Benign

0.40

Sift4G

Benign

0.37

Polyphen

0.0050

Vest4

0.050

MutPred

0.37

Loss of glycosylation at P305 (P = 0.0421);

MVP

0.23

MPC

0.61

ClinPred

0.057

GERP RS

1.1

Varity_R

0.083

gMVP

0.61

Mutation Taster

=97/3

polymorphism

(source)

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

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chr3-8767284-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