Genetic Variant NM_000796.6:c.940C>T (chr3-114131184-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_000796.6(DRD3):c.940C>T(p.Pro314Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P314T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DRD3
NM_000796.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.685

Publications

2 publications found

Variant links:

Genes affected

DRD3 (HGNC:3024): (dopamine receptor D3) This gene encodes the D3 subtype of the five (D1-D5) dopamine receptors. The activity of the D3 subtype receptor is mediated by G proteins which inhibit adenylyl cyclase. This receptor is localized to the limbic areas of the brain, which are associated with cognitive, emotional, and endocrine functions. Genetic variation in this gene may be associated with susceptibility to hereditary essential tremor 1. Alternative splicing of this gene results in transcript variants encoding different isoforms, although some variants may be subject to nonsense-mediated decay (NMD). [provided by RefSeq, Jul 2008]

DRD3 links:

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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=0.046236217).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DRD3	NM_000796.6 link	c.940C>T	p.Pro314Ser	missense_variant	Exon 6 of 7	ENST00000383673.5	NP_000787.2	P35462-1X5D2G4A8K8E4
DRD3	NM_001282563.2 link	c.940C>T	p.Pro314Ser	missense_variant	Exon 7 of 8		NP_001269492.1	P35462-1X5D2G4A8K8E4
DRD3	NM_001290809.1 link	c.940C>T	p.Pro314Ser	missense_variant	Exon 7 of 8		NP_001277738.1	P35462-1X5D2G4A8K8E4A1A4V4
DRD3	NM_033663.6 link	c.860-19C>T		intron_variant	Intron 6 of 7		NP_387512.3	P35462-3E9PCM4A8K8E4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DRD3	ENST00000383673.5 link	c.940C>T	p.Pro314Ser	missense_variant	Exon 6 of 7	1	NM_000796.6	ENSP00000373169.2		P35462-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461894

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727248

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:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112012

Other (OTH)

AF:

0.00

AC:

AN:

60396

⚠️ 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: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.53

CADD

Benign

7.0

(source)

DANN

Benign

0.84

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.053

LIST_S2

Benign

0.69

.;.;T

M_CAP

Benign

0.0088

MetaRNN

Benign

0.046

T;T;T

MetaSVM

Benign

-1.0

PhyloP100

0.69

PrimateAI

Benign

0.37

PROVEAN

Benign

0.20

N;N;N

REVEL

Benign

0.035

Sift

Benign

1.0

T;T;T

Sift4G

Benign

0.87

T;T;T

Vest4

0.058

MutPred

0.46

Gain of MoRF binding (P = 0.0367);Gain of MoRF binding (P = 0.0367);Gain of MoRF binding (P = 0.0367);

MVP

0.71

MPC

0.37

ClinPred

0.049

GERP RS

1.4

gMVP

0.27

Mutation Taster

=95/5

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over