11-113412568-C-G

Variant names:

• chr11-113412568-C-G
• rs200890663
• NM_000795.4:c.1126G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_000795.4(DRD2):​c.1126G>C​(p.Ala376Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DRD2 NM_000795.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91
• Publications: 0 publications found

Genes affected

DRD2 (HGNC:3023): (dopamine receptor D2) This gene encodes the D2 subtype of the dopamine receptor. This G-protein coupled receptor inhibits adenylyl cyclase activity. A missense mutation in this gene causes myoclonus dystonia; other mutations have been associated with schizophrenia. Alternative splicing of this gene results in two transcript variants encoding different isoforms. A third variant has been described, but it has not been determined whether this form is normal or due to aberrant splicing. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.945

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DRD2	NM_000795.4	c.1126G>C	p.Ala376Pro	missense_variant	Exon 7 of 8	ENST00000362072.8	NP_000786.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DRD2	ENST00000362072.8	c.1126G>C	p.Ala376Pro	missense_variant	Exon 7 of 8	1	NM_000795.4	ENSP00000354859.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Dystonic disorder Uncertain:1

Oct 28, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 376 of the DRD2 protein (p.Ala376Pro). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DRD2-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. 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
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.56	.;D;.;D;.
Eigen	Pathogenic	0.97
Eigen_PC	Pathogenic	0.95
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.84	T;.;D;D;D
M_CAP	Benign	0.041	D
MetaRNN	Pathogenic	0.94	D;D;D;D;D
MetaSVM	Benign	-0.39	T
MutationAssessor	Uncertain	2.8	.;M;.;M;.
PhyloP100		7.9
PrimateAI	Pathogenic	0.89	D
PROVEAN	Uncertain	-3.1	D;D;D;D;D
REVEL	Uncertain	0.60
Sift	Benign	0.14	T;D;T;D;D
Sift4G	Benign	0.23	T;T;T;T;T
Polyphen		1.0	D;D;D;D;.
Vest4		0.94
MutPred		0.86		.;Loss of MoRF binding (P = 0.1059);.;Loss of MoRF binding (P = 0.1059);.;
MVP		0.86
MPC		2.1
ClinPred		0.97	D
GERP RS		6.1
Varity_R		0.96
gMVP		0.98
Mutation Taster		=4/96	disease causing

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

Other links and lift over

dbSNP: rs200890663; hg19: chr11-113283290;