chr1-62495635-A-G

Variant names:

Variant summary

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

The NM_001367561.1(DOCK7):c.4970T>C(p.Val1657Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000695 in 1,438,174 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

DOCK7
NM_001367561.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.32

Publications

0 publications found

Variant links:

Genes affected

DOCK7 (HGNC:19190): (dedicator of cytokinesis 7) The protein encoded by this gene is a guanine nucleotide exchange factor (GEF) that plays a role in axon formation and neuronal polarization. The encoded protein displays GEF activity toward RAC1 and RAC3 Rho small GTPases but not toward CDC42. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

DOCK7 Gene-Disease associations (from GenCC):

genetic developmental and epileptic encephalopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
developmental and epileptic encephalopathy, 23
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P

DOCK7 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;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DOCK7	NM_001367561.1 link	c.4970T>C	p.Val1657Ala	missense_variant	Exon 39 of 50	ENST00000635253.2	NP_001354490.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DOCK7	ENST00000635253.2 link	c.4970T>C	p.Val1657Ala	missense_variant	Exon 39 of 50	5	NM_001367561.1	ENSP00000489124.1		Q96N67-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.95e-7

AC:

AN:

1438174

Hom.:

Cov.:

AF XY:

0.00000140

AC XY:

AN XY:

715182

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:

31788

American (AMR)

AF:

0.00

AC:

AN:

37198

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25520

East Asian (EAS)

AF:

0.00

AC:

AN:

38520

South Asian (SAS)

AF:

0.0000124

AC:

AN:

80948

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1106438

Other (OTH)

AF:

0.00

AC:

AN:

59434

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Developmental and epileptic encephalopathy, 23

Uncertain:1

Sep 01, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces valine with alanine at codon 1648 of the DOCK7 protein (p.Val1648Ala). The valine residue is highly conserved and there is a small physicochemical difference between valine and alanine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with DOCK7-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

Uncertain

0.11

BayesDel_noAF

Benign

-0.090

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

.;.;.;T;.;.;T

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

D;D;D;D;D;D;D

M_CAP

Benign

0.017

MetaRNN

Uncertain

0.72

D;D;D;D;D;D;D

MetaSVM

Benign

-1.2

MutationAssessor

Benign

1.6

.;.;.;.;.;.;L

PhyloP100

9.3

PrimateAI

Pathogenic

0.92

PROVEAN

Uncertain

-3.9

D;.;D;.;.;.;.

REVEL

Uncertain

0.43

Sift

Pathogenic

0.0

D;.;D;.;.;.;.

Sift4G

Uncertain

0.039

D;D;D;.;D;D;D

Polyphen

0.99

D;D;D;.;D;D;D

Vest4

0.72

MutPred

0.40

.;.;.;.;.;.;Loss of stability (P = 0.0074);

MVP

0.66

MPC

1.2

ClinPred

1.0

GERP RS

6.0

Varity_R

0.29

gMVP

0.49

Mutation Taster

=51/49

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over