Genetic Variant DOK7:p.Ala482Ala (chr4-3493432-G-C) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_173660.5(DOK7):c.1446G>C(p.Ala482Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000689 in 1,452,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. A482A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 35)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

DOK7
NM_173660.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -3.84

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: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.95).

BP7

Synonymous conserved (PhyloP=-3.84 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DOK7	NM_173660.5 link	c.1446G>C	p.Ala482Ala	synonymous_variant	Exon 7 of 7	ENST00000340083.6	NP_775931.3	Q18PE1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
DOK7	ENST00000340083.6 link	c.1446G>C	p.Ala482Ala	synonymous_variant	Exon 7 of 7	1	NM_173660.5	ENSP00000344432.5	Q18PE1-1
DOK7	ENST00000643608.1 link	c.1014G>C	p.Ala338Ala	synonymous_variant	Exon 5 of 8			ENSP00000495701.1	A0A2R8Y701
DOK7	ENST00000515886.5 link	c.516G>C	p.Ala172Ala	synonymous_variant	Exon 4 of 4	2		ENSP00000492194.1	A0A1W2PRA3
DOK7	ENST00000507039.5 link	c.*667G>C		3_prime_UTR_variant	Exon 7 of 7	2		ENSP00000423614.1	Q18PE1-4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.89e-7

AC:

AN:

1452270

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

721836

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33298

American (AMR)

AF:

0.00

AC:

AN:

43878

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25948

East Asian (EAS)

AF:

0.00

AC:

AN:

39334

South Asian (SAS)

AF:

0.00

AC:

AN:

85190

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51064

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5638

European-Non Finnish (NFE)

AF:

9.03e-7

AC:

AN:

1107998

Other (OTH)

AF:

0.00

AC:

AN:

59922

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.95

CADD

Benign

0.040

(source)

DANN

Benign

0.31

PhyloP100

-3.8

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over