1-62552893-C-T

Position:

chr1-62552893-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2PP2BP4_Strong

The NM_001367561.1(DOCK7):c.2605G>A(p.Gly869Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000734 in 1,604,212 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00074 ( 0 hom. )

Consequence

DOCK7
NM_001367561.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 5.74

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), DOCK7. . Gene score misZ 3.4194 (greater than the threshold 3.09). Trascript score misZ 3.8677 (greater than threshold 3.09). GenCC has associacion of gene with developmental and epileptic encephalopathy, 23, developmental and epileptic encephalopathy.

BP4

Computational evidence support a benign effect (MetaRNN=0.011288434).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DOCK7	NM_001367561.1 linkuse as main transcript	c.2605G>A	p.Gly869Ser	missense_variant	22/50	ENST00000635253.2	NP_001354490.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DOCK7	ENST00000635253.2 linkuse as main transcript	c.2605G>A	p.Gly869Ser	missense_variant	22/50	5	NM_001367561.1	ENSP00000489124		Q96N67-1

Frequencies

GnomAD3 genomes

AF:

0.000659

AC:

100

AN:

151840

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000291

Gnomad AMI

AF:

0.0121

Gnomad AMR

AF:

0.000722

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:

0.000868

Gnomad OTH

AF:

0.00338

GnomAD3 exomes

AF:

0.000589

AC:

145

AN:

246258

Hom.:

AF XY:

0.000608

AC XY:

AN XY:

133236

show subpopulations

Gnomad AFR exome

AF:

0.000126

Gnomad AMR exome

AF:

0.00151

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000731

Gnomad OTH exome

AF:

0.00185

GnomAD4 exome

AF:

0.000742

AC:

1077

AN:

1452254

Hom.:

Cov.:

AF XY:

0.000716

AC XY:

517

AN XY:

722256

show subpopulations

Gnomad4 AFR exome

AF:

0.000151

Gnomad4 AMR exome

AF:

0.00161

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000189

Gnomad4 NFE exome

AF:

0.000857

Gnomad4 OTH exome

AF:

0.000817

GnomAD4 genome

AF:

0.000658

AC:

100

AN:

151958

Hom.:

Cov.:

AF XY:

0.000592

AC XY:

AN XY:

74272

show subpopulations

Gnomad4 AFR

AF:

0.000290

Gnomad4 AMR

AF:

0.000721

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000868

Gnomad4 OTH

AF:

0.00334

Alfa

AF:

0.000687

Hom.:

Bravo

AF:

0.000797

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000478

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Developmental and epileptic encephalopathy, 23

Uncertain:4

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Apr 11, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 24, 2022	This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 869 of the DOCK7 protein (p.Gly869Ser). This variant is present in population databases (rs201823761, gnomAD 0.1%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with DOCK7-related conditions. ClinVar contains an entry for this variant (Variation ID: 475133). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DOCK7 protein function. 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Baylor Genetics	May 05, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Victorian Clinical Genetics Services, Murdoch Childrens Research Institute	Jul 17, 2023	Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as VUS-3C. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with developmental and epileptic encephalopathy 23 (MIM#615859). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from glycine to serine. (I) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v2) <0.01 for a recessive condition (157 heterozygotes, 0 homozygotes). (SP) 0309 - An alternative amino acid change at the same position has been observed in gnomAD (v2) (3 heterozygotes, 0 homozygotes). (I) 0503 - Missense variant consistently predicted to be tolerated by multiple in silico tools or not conserved in placental mammals with a minor amino acid change. (SB) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region. (I) 0710 - Another missense variant comparable to the one identified in this case has inconclusive previous evidence for pathogenicity. p.(Gly869Ala) has been classified as a VUS by a clinical laboratory in ClinVar. (I) 0809 - Previous evidence of pathogenicity for this variant is inconclusive. This variant has been classified as a VUS by three clinical laboratories in ClinVar, and has been observed as a single hit in an individual with epileptic encephalopathy (PMID: 24814191). (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	May 07, 2023	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

May 20, 2024

Variant summary: DOCK7 c.2605G>A (p.Gly869Ser) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00059 in 246258 control chromosomes, predominantly at a frequency of 0.0015 within the Latino subpopulation in the gnomAD database. c.2605G>A has been reported in the literature at a heterozygous state without 2ed reportable variant in one individual affected with epileptic encephalopathy with suppression burst (Perrault_2014). These report(s) do not provide unequivocal conclusions about association of the variant with Developmental And Epileptic Encephalopathy, 23. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 24814191). ClinVar contains an entry for this variant (Variation ID: 475133). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.31

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.085

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

Eigen

Benign

-0.16

Eigen_PC

Benign

0.071

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

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

M_CAP

Benign

0.011

MetaRNN

Benign

0.011

T;T;T;T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.14

N;N;N;N;N;N;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-0.56

N;.;N;.;.;.;.

REVEL

Benign

0.16

Sift

Benign

0.40

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

Sift4G

Benign

0.69

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

Polyphen

0.0080

B;B;B;B;B;.;.

Vest4

0.53

MVP

0.59

MPC

0.38

ClinPred

0.030

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.51

gMVP

0.61

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over