4-3493403-G-A

Position:

chr4-3493403-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_173660.5(DOK7):c.1417G>A(p.Glu473Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000307 in 1,596,228 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

DOK7
NM_173660.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 2.45

Variant links:

Genes affected

DOK7 (HGNC:26594): (docking protein 7) The protein encoded by this gene is essential for neuromuscular synaptogenesis. The protein functions in aneural activation of muscle-specific receptor kinase, which is required for postsynaptic differentiation, and in the subsequent clustering of the acetylcholine receptor in myotubes. This protein can also induce autophosphorylation of muscle-specific receptor kinase. Mutations in this gene are a cause of familial limb-girdle myasthenia autosomal recessive, which is also known as congenital myasthenic syndrome type 1B. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

DOK7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26073992).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DOK7	NM_173660.5 linkuse as main transcript	c.1417G>A	p.Glu473Lys	missense_variant	7/7	ENST00000340083.6	NP_775931.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DOK7	ENST00000340083.6 linkuse as main transcript	c.1417G>A	p.Glu473Lys	missense_variant	7/7	1	NM_173660.5	ENSP00000344432	P1	Q18PE1-1
DOK7	ENST00000643608.1 linkuse as main transcript	c.985G>A	p.Glu329Lys	missense_variant	5/8			ENSP00000495701
DOK7	ENST00000515886.5 linkuse as main transcript	c.487G>A	p.Glu163Lys	missense_variant	4/4	2		ENSP00000492194
DOK7	ENST00000507039.5 linkuse as main transcript	c.*638G>A		3_prime_UTR_variant	7/7	2		ENSP00000423614		Q18PE1-4

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000194

AC:

AN:

206530

Hom.:

AF XY:

0.00000875

AC XY:

AN XY:

114222

show subpopulations

Gnomad AFR exome

AF:

0.0000878

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000638

Gnomad SAS exome

AF:

0.0000357

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000115

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000312

AC:

AN:

1444042

Hom.:

Cov.:

AF XY:

0.0000307

AC XY:

AN XY:

717076

show subpopulations

Gnomad4 AFR exome

AF:

0.000241

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000769

Gnomad4 SAS exome

AF:

0.000130

Gnomad4 FIN exome

AF:

0.0000198

Gnomad4 NFE exome

AF:

0.0000172

Gnomad4 OTH exome

AF:

0.0000504

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000453

ExAC

AF:

0.0000420

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Fetal akinesia deformation sequence 1;C1850792:Congenital myasthenic syndrome 10

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 08, 2024

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 473 of the DOK7 protein (p.Glu473Lys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with DOK7-related conditions. ClinVar contains an entry for this variant (Variation ID: 534121). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. 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. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

Nov 08, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

T;.;.

Eigen

Benign

-0.10

Eigen_PC

Benign

-0.18

FATHMM_MKL

Benign

0.73

LIST_S2

Benign

0.81

T;T;T

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.26

T;T;T

MetaSVM

Benign

-0.65

MutationAssessor

Uncertain

2.1

M;.;.

MutationTaster

Benign

1.0

D;N;N

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-2.1

N;.;.

REVEL

Benign

0.19

Sift

Uncertain

0.012

D;.;.

Sift4G

Benign

0.23

T;.;.

Polyphen

0.46

P;.;.

Vest4

0.14

MVP

0.69

MPC

0.0044

ClinPred

0.24

GERP RS

2.9

Varity_R

0.094

gMVP

0.12

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