4-3489776-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_173660.5(DOK7):c.752C>T(p.Ala251Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000369 in 1,572,398 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A251E) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000086 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

DOK7
NM_173660.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.361

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: ClinGen, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
fetal akinesia deformation sequence 3
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
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: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.019193053).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_173660.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DOK7	NM_173660.5	MANE Select	c.752C>T	p.Ala251Val	missense	Exon 6 of 7	NP_775931.3
DOK7	NM_001301071.2		c.752C>T	p.Ala251Val	missense	Exon 6 of 10	NP_001288000.1	Q18PE1-3
DOK7	NM_001363811.2		c.320C>T	p.Ala107Val	missense	Exon 4 of 8	NP_001350740.1	A0A2R8Y701

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DOK7	ENST00000340083.6	TSL:1 MANE Select	c.752C>T	p.Ala251Val	missense	Exon 6 of 7	ENSP00000344432.5	Q18PE1-1
DOK7	ENST00000513995.1	TSL:1	n.410C>T		non_coding_transcript_exon	Exon 2 of 3
DOK7	ENST00000643608.1		c.320C>T	p.Ala107Val	missense	Exon 4 of 8	ENSP00000495701.1	A0A2R8Y701

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152020

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000386

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000109

AC:

AN:

183004

AF XY:

0.000123

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000284

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000499

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000397

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000317

AC:

AN:

1420378

Hom.:

Cov.:

AF XY:

0.0000313

AC XY:

AN XY:

702502

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32702

American (AMR)

AF:

0.000229

AC:

AN:

39218

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25344

East Asian (EAS)

AF:

0.000373

AC:

AN:

37534

South Asian (SAS)

AF:

0.0000742

AC:

AN:

80852

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49502

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

0.0000119

AC:

AN:

1090740

Other (OTH)

AF:

0.0000510

AC:

AN:

58768

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

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:

0.0000855

AC:

AN:

152020

Hom.:

Cov.:

AF XY:

0.0000943

AC XY:

AN XY:

74256

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41374

American (AMR)

AF:

0.000131

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000386

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67972

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.540

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:

0.0000330

Hom.:

Bravo

AF:

0.000166

ESP6500AA

AF:

0.000230

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000760

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

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

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.59

CADD

Benign

9.4

(source)

DANN

Benign

0.85

DEOGEN2

Benign

0.11

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.027

LIST_S2

Benign

0.11

M_CAP

Benign

0.037

MetaRNN

Benign

0.019

MetaSVM

Benign

-1.0

PhyloP100

0.36

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-1.4

REVEL

Benign

0.039

Sift

Benign

0.28

Sift4G

Benign

0.27

Polyphen

0.0010

Vest4

0.14

MVP

0.38

MPC

0.0045

ClinPred

0.051

GERP RS

1.2

Varity_R

0.030

gMVP

0.18

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over