chr9-128946225-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_014908.4(DOLK):c.1079A>G(p.Tyr360Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000914 in 1,614,084 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. Y360Y) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0011 ( 1 hom., cov: 31)

Exomes 𝑓: 0.00089 ( 6 hom. )

Consequence

DOLK
NM_014908.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:8

Conservation

PhyloP100: 5.91

Publications

7 publications found

Variant links:

Genes affected

DOLK (HGNC:23406): (dolichol kinase) The protein encoded by this gene catalyzes the CTP-mediated phosphorylation of dolichol, and is involved in the synthesis of Dol-P-Man, which is an essential glycosyl carrier lipid for C- and O-mannosylation, N- and O-linked glycosylation of proteins, and for the biosynthesis of glycosyl phosphatidylinositol anchors in endoplasmic reticulum. Mutations in this gene are associated with dolichol kinase deficiency.[provided by RefSeq, Apr 2010]

DOLK Gene-Disease associations (from GenCC):

DK1-congenital disorder of glycosylation
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet, ClinGen, G2P
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DOLK links:

ENSG00000251184 (HGNC:):

ENSG00000251184 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.012760758).

BP6

Variant 9-128946225-T-C is Benign according to our data. Variant chr9-128946225-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 227331.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00113 (172/152240) while in subpopulation AMR AF = 0.00353 (54/15286). AF 95% confidence interval is 0.00278. There are 1 homozygotes in GnomAd4. There are 92 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 6 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DOLK	NM_014908.4 link	c.1079A>G	p.Tyr360Cys	missense_variant	Exon 1 of 1	ENST00000372586.4	NP_055723.1	Q9UPQ8A0A0S2Z597

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DOLK	ENST00000372586.4 link	c.1079A>G	p.Tyr360Cys	missense_variant	Exon 1 of 1	6	NM_014908.4	ENSP00000361667.3		Q9UPQ8
ENSG00000251184	ENST00000482796.1 link	c.39-2964T>C		intron_variant	Intron 1 of 4	2		ENSP00000417556.2		H7C4K7

Frequencies

GnomAD3 genomes

AF:

0.00114

AC:

174

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.0296

Gnomad AMR

AF:

0.00354

Gnomad ASJ

AF:

0.00462

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000620

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0127

Gnomad NFE

AF:

0.000662

Gnomad OTH

AF:

0.00575

GnomAD2 exomes

AF:

0.00148

AC:

371

AN:

251306

AF XY:

0.00140

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00330

Gnomad ASJ exome

AF:

0.00665

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00113

Gnomad OTH exome

AF:

0.00391

GnomAD4 exome

AF:

0.000892

AC:

1304

AN:

1461844

Hom.:

Cov.:

AF XY:

0.000912

AC XY:

663

AN XY:

727222

show subpopulations

African (AFR)

AF:

0.000806

AC:

AN:

33480

American (AMR)

AF:

0.00326

AC:

146

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00635

AC:

166

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000939

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000375

AC:

AN:

53372

Middle Eastern (MID)

AF:

0.0104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000589

AC:

655

AN:

1112012

Other (OTH)

AF:

0.00277

AC:

167

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

188

282

376

470

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

<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:

0.00113

AC:

172

AN:

152240

Hom.:

Cov.:

AF XY:

0.00124

AC XY:

AN XY:

74438

show subpopulations

African (AFR)

AF:

0.000313

AC:

AN:

41542

American (AMR)

AF:

0.00353

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00462

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.000621

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000662

AC:

AN:

67996

Other (OTH)

AF:

0.00569

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

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:

0.00105

Hom.:

Bravo

AF:

0.00137

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.00149

AC:

181

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.00142

EpiControl

AF:

0.00160

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:8

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:3

Jul 07, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: DOLK c.1079A>G (p.Tyr360Cys) results in a non-conservative amino acid change in the encoded protein sequence. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change. The variant allele was found at a frequency of 0.0015 in 251306 control chromosomes in the gnomAD database, including 2 homozygotes. The observed variant frequency is approximately 1.32 fold of the estimated maximal expected allele frequency for a pathogenic variant in DOLK causing DK1-Congenital Disorder Of Glycosylation phenotype (0.0011). To our knowledge, no occurrence of c.1079A>G in individuals affected with DK1-Congenital Disorder Of Glycosylation and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 227331). Based on the evidence outlined above, the variant was classified as likely benign. -

Apr 13, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Tyr360Cys in exon 1 of DOLK: This variant is not expected to have clinical sig nificance because it has been identified in 0.38% (44/11578) of Latino chromosom es by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; db SNP rs138453255). -

Apr 09, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

DK1-congenital disorder of glycosylation

Uncertain:1Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided

Benign:2

Feb 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

DOLK: BP4 -

Nov 02, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 27212206, 25819062, 28820871) -

DOLK-related disorder

Benign:1

Apr 30, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cardiovascular phenotype

Benign:1

Mar 11, 2019

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.46

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

0.97

M_CAP

Benign

0.025

MetaRNN

Benign

0.013

MetaSVM

Benign

-0.75

MutationAssessor

Uncertain

2.8

PhyloP100

5.9

PrimateAI

Benign

0.48

PROVEAN

Pathogenic

-6.3

REVEL

Uncertain

0.30

Sift

Uncertain

0.015

Sift4G

Uncertain

0.017

Polyphen

0.99

Vest4

0.59

MVP

0.75

MPC

1.1

ClinPred

0.12

GERP RS

5.2

Varity_R

0.35

gMVP

0.41

Mutation Taster

=83/17

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over