chr4-3473645-C-T

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_173660.5(DOK7):​c.331+9C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00144 in 1,541,634 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00093 ( 0 hom., cov: 34)
Exomes 𝑓: 0.0015 ( 5 hom. )

Consequence

DOK7
NM_173660.5 intron

Scores

2

Clinical Significance

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

Conservation

PhyloP100: 0.102
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant 4-3473645-C-T is Benign according to our data. Variant chr4-3473645-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 196595.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1}.
BS1
Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.00149 (2072/1389316) while in subpopulation NFE AF= 0.00186 (1986/1070088). AF 95% confidence interval is 0.00179. There are 5 homozygotes in gnomad4_exome. There are 973 alleles in male gnomad4_exome subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAdExome4 at 5 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
DOK7NM_173660.5 linkuse as main transcriptc.331+9C>T intron_variant ENST00000340083.6 NP_775931.3 Q18PE1-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
DOK7ENST00000340083.6 linkuse as main transcriptc.331+9C>T intron_variant 1 NM_173660.5 ENSP00000344432.5 Q18PE1-1

Frequencies

GnomAD3 genomes
AF:
0.000926
AC:
141
AN:
152200
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.000386
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000393
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:
0.00175
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000915
AC:
151
AN:
165050
Hom.:
0
AF XY:
0.000917
AC XY:
82
AN XY:
89390
show subpopulations
Gnomad AFR exome
AF:
0.000344
Gnomad AMR exome
AF:
0.000587
Gnomad ASJ exome
AF:
0.000122
Gnomad EAS exome
AF:
0.0000843
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000634
Gnomad NFE exome
AF:
0.00186
Gnomad OTH exome
AF:
0.00133
GnomAD4 exome
AF:
0.00149
AC:
2072
AN:
1389316
Hom.:
5
Cov.:
33
AF XY:
0.00143
AC XY:
973
AN XY:
681956
show subpopulations
Gnomad4 AFR exome
AF:
0.000316
Gnomad4 AMR exome
AF:
0.000657
Gnomad4 ASJ exome
AF:
0.0000403
Gnomad4 EAS exome
AF:
0.0000278
Gnomad4 SAS exome
AF:
0.0000125
Gnomad4 FIN exome
AF:
0.0000205
Gnomad4 NFE exome
AF:
0.00186
Gnomad4 OTH exome
AF:
0.000838
GnomAD4 genome
AF:
0.000926
AC:
141
AN:
152318
Hom.:
0
Cov.:
34
AF XY:
0.000846
AC XY:
63
AN XY:
74478
show subpopulations
Gnomad4 AFR
AF:
0.000385
Gnomad4 AMR
AF:
0.000392
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00175
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.00152
Hom.:
0
Bravo
AF:
0.00113
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Dec 20, 2014- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Fetal akinesia deformation sequence 1;C1850792:Congenital myasthenic syndrome 10 Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 31, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
9.8
DANN
Benign
0.74

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.

Other links and lift over

dbSNP: rs370879328; hg19: chr4-3475372; API