rs377555406

Positions:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_173660.5(DOK7):c.1279G>A(p.Gly427Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000745 in 1,611,516 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G427D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000063 ( 0 hom. )

Consequence

DOK7
NM_173660.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: -0.285

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 Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.034209758).

BP6

Variant 4-3493265-G-A is Benign according to our data. Variant chr4-3493265-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 465672.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DOK7	NM_173660.5 linkuse as main transcript	c.1279G>A	p.Gly427Ser	missense_variant	7/7	ENST00000340083.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DOK7	ENST00000340083.6 linkuse as main transcript	c.1279G>A	p.Gly427Ser	missense_variant	7/7	1	NM_173660.5	P1	Q18PE1-1
DOK7	ENST00000643608.1 linkuse as main transcript	c.847G>A	p.Gly283Ser	missense_variant	5/8
DOK7	ENST00000515886.5 linkuse as main transcript	c.349G>A	p.Gly117Ser	missense_variant	4/4	2
DOK7	ENST00000507039.5 linkuse as main transcript	c.*500G>A		3_prime_UTR_variant	7/7	2			Q18PE1-4

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000458

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000118

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000552

AC:

AN:

235352

Hom.:

AF XY:

0.0000463

AC XY:

AN XY:

129466

show subpopulations

Gnomad AFR exome

AF:

0.000280

Gnomad AMR exome

AF:

0.0000293

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000992

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000486

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000630

AC:

AN:

1459188

Hom.:

Cov.:

AF XY:

0.0000579

AC XY:

AN XY:

725828

show subpopulations

Gnomad4 AFR exome

AF:

0.000568

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000576

Gnomad4 OTH exome

AF:

0.0000996

GnomAD4 genome

AF:

0.000184

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74480

show subpopulations

Gnomad4 AFR

AF:

0.000457

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0000565

Hom.:

Bravo

AF:

0.000234

ExAC

AF:

0.0000665

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000595

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 08, 2022

The c.1279G>A (p.G427S) alteration is located in exon 7 (coding exon 7) of the DOK7 gene. This alteration results from a G to A substitution at nucleotide position 1279, causing the glycine (G) at amino acid position 427 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Revvity Omics, Revvity

Mar 06, 2020

- -

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

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 28, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.54

CADD

Benign

5.9

DANN

Benign

0.34

DEOGEN2

Benign

0.029

T;.;.

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.017

LIST_S2

Benign

0.39

T;T;T

M_CAP

Benign

0.034

MetaRNN

Benign

0.034

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;.;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.33

N;.;.

REVEL

Benign

0.044

Sift

Benign

0.40

T;.;.

Sift4G

Benign

1.0

T;.;.

Polyphen

0.0030

B;.;.

Vest4

0.036

MVP

0.46

MPC

0.0045

ClinPred

0.0086

GERP RS

1.9

Varity_R

0.033

gMVP

0.11

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