NM_173660.5:c.163A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_173660.5(DOK7):c.163A>G(p.Ser55Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000182 in 1,611,136 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/22 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. S55C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.00019 ( 1 hom. )

Consequence

DOK7
NM_173660.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.28

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

congenital myasthenic syndrome 10
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), PanelApp Australia
fetal akinesia deformation sequence 3
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
fetal akinesia deformation sequence 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
postsynaptic congenital myasthenic syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

DOK7 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.020434767).

BP6

Variant 4-3473468-A-G is Benign according to our data. Variant chr4-3473468-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 465682.

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.000195 (284/1458752) while in subpopulation SAS AF = 0.00309 (266/86168). AF 95% confidence interval is 0.00278. There are 1 homozygotes in GnomAdExome4. There are 220 alleles in the male GnomAdExome4 subpopulation. Median coverage is 34. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DOK7	NM_173660.5 link	c.163A>G	p.Ser55Gly	missense_variant	Exon 3 of 7	ENST00000340083.6	NP_775931.3	Q18PE1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DOK7	ENST00000340083.6 link	c.163A>G	p.Ser55Gly	missense_variant	Exon 3 of 7	1	NM_173660.5	ENSP00000344432.5		Q18PE1-1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152266

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00186

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000411

AC:

102

AN:

248044

AF XY:

0.000563

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000195

AC:

284

AN:

1458752

Hom.:

Cov.:

AF XY:

0.000303

AC XY:

220

AN XY:

725684

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33404

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00309

AC:

266

AN:

86168

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52546

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4186

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111734

Other (OTH)

AF:

0.000266

AC:

AN:

60198

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000656

AC:

AN:

152384

Hom.:

Cov.:

AF XY:

0.0000939

AC XY:

AN XY:

74528

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41596

American (AMR)

AF:

0.00

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00186

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.000380

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Sep 26, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.163A>G (p.S55G) alteration is located in exon 3 (coding exon 3) of the DOK7 gene. This alteration results from a A to G substitution at nucleotide position 163, causing the serine (S) at amino acid position 55 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

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

Benign:1

Dec 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.20

.;T

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.16

FATHMM_MKL

Benign

0.76

LIST_S2

Benign

0.83

T;T

M_CAP

Benign

0.061

MetaRNN

Benign

0.020

T;T

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.9

M;M

PhyloP100

2.3

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-2.8

D;D

REVEL

Benign

0.18

Sift

Benign

0.038

D;T

Sift4G

Benign

0.59

T;T

Polyphen

0.53

.;P

Vest4

0.59

MutPred

0.35

Gain of glycosylation at S55 (P = 0.0036);Gain of glycosylation at S55 (P = 0.0036);

MVP

0.72

MPC

0.0050

ClinPred

0.061

GERP RS

2.5

Varity_R

0.19

gMVP

0.33

Mutation Taster

=96/4

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over