NM_014908.4:c.703G>A

Variant names:

• chr9-128946601-C-T
• rs759019995
• NM_014908.4:c.703G>A

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Moderate BS1

The NM_014908.4(DOLK):​c.703G>A​(p.Val235Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,614,102 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: DOLK NM_014908.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.936
• Publications: 1 publications found

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: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000251184 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.12902924).
• BS1: Variant frequency is greater than expected in population eas. GnomAdExome4 allele frequency = 0.0000116 (17/1461894) while in subpopulation EAS AF = 0.000126 (5/39700). AF 95% confidence interval is 0.0000491. There are 0 homozygotes in GnomAdExome4. There are 7 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014908.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOLK	NM_014908.4	MANE Select	c.703G>A	p.Val235Ile	missense	Exon 1 of 1	NP_055723.1	Q9UPQ8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOLK	ENST00000372586.4	TSL:6 MANE Select	c.703G>A	p.Val235Ile	missense	Exon 1 of 1	ENSP00000361667.3	Q9UPQ8
	ENSG00000251184	ENST00000482796.1	TSL:2	c.39-2588C>T		intron	N/A	ENSP00000417556.2	H7C4K7

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152090 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

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: 0.0000278 AC: 7 AN: 251476 AF XY: 0.0000221

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000217

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1461894 Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7 AN XY: 727248

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.000126 AC: 5 AN: 39700

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000719 AC: 8 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152208 Hom.: 0 Cov.: 31 AF XY: 0.0000269 AC XY: 2 AN XY: 74402

African (AFR) AF: 0.00 AC: 0 AN: 41524

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10604

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68010

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000330 AC: 4

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.000109

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)
-	1	-	DK1-congenital disorder of glycosylation (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.079
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.29
CADD	Benign	19
DANN	Benign	0.97
DEOGEN2	Benign	0.18	T
Eigen	Benign	-0.15
Eigen_PC	Benign	0.018
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.81	T
M_CAP	Benign	0.043	D
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.29	T
MutationAssessor	Benign	1.6	L
PhyloP100		0.94
PrimateAI	Benign	0.40	T
PROVEAN	Benign	0.070	N
REVEL	Benign	0.28
Sift	Benign	0.29	T
Sift4G	Benign	0.096	T
Polyphen		0.010	B
Vest4		0.10
MutPred		0.36		Loss of sheet (P = 0.0126)
MVP		0.72
MPC		0.31
ClinPred		0.055	T
GERP RS		5.2
Varity_R		0.094
gMVP		0.094
Mutation Taster		=87/13	polymorphism

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

Other links and lift over

dbSNP: rs759019995; hg19: chr9-131708880; COSMIC: COSV58281513; COSMIC: COSV58281513;