Genetic Variant NM_000916.4:c.-239+21G>T (chr3-8769210-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000916.4(OXTR):c.-239+21G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

OXTR
NM_000916.4 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.704

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: Ambry Genetics, Labcorp Genetics (formerly Invitae)
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
long QT syndrome
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

CAV3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000916.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
OXTR	NM_000916.4	MANE Select	c.-239+21G>T	intron	N/A	NP_000907.2
OXTR	NM_001354655.2		c.-401G>T	5_prime_UTR	Exon 1 of 4	NP_001341584.1	P30559
OXTR	NM_001354653.2		c.-239+21G>T	intron	N/A	NP_001341582.1	B2R9L7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
OXTR	ENST00000316793.8	TSL:1 MANE Select	c.-239+21G>T	intron	N/A	ENSP00000324270.2	P30559
OXTR	ENST00000894689.1		c.-239+140G>T	intron	N/A	ENSP00000564748.1
OXTR	ENST00000894691.1		c.-239+27G>T	intron	N/A	ENSP00000564750.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

170

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

140

African (AFR)

AF:

0.00

AC:

AN:

American (AMR)

AC:

AN:

Ashkenazi Jewish (ASJ)

AC:

AN:

East Asian (EAS)

AF:

0.00

AC:

AN:

South Asian (SAS)

AF:

0.00

AC:

AN:

European-Finnish (FIN)

AF:

0.00

AC:

AN:

Middle Eastern (MID)

AF:

0.00

AC:

AN:

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

136

Other (OTH)

AF:

0.00

AC:

AN:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.67

CADD

Benign

7.9

(source)

DANN

Benign

0.63

PhyloP100

-0.70

PromoterAI

-0.10

Neutral

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.35

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.35

Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over