NM_000154.2:c.841G>A

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2PP3_StrongPP5_Moderate

The NM_000154.2(GALK1):c.841G>A(p.Val281Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000119 in 1,596,026 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. V281V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

GALK1
NM_000154.2 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 7.38

Publications

4 publications found

Variant links:

Genes affected

GALK1 (HGNC:4118): (galactokinase 1) Galactokinase is a major enzyme for the metabolism of galactose and its deficiency causes congenital cataracts during infancy and presenile cataracts in the adult population. [provided by RefSeq, Jul 2008]

GALK1 Gene-Disease associations (from GenCC):

galactokinase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae), G2P, Orphanet, ClinGen

GALK1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.967

PP5

Variant 17-75758552-C-T is Pathogenic according to our data. Variant chr17-75758552-C-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 557453.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000154.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALK1	NM_000154.2	MANE Select	c.841G>A	p.Val281Met	missense	Exon 6 of 8	NP_000145.1
	GALK1	NM_001381985.1		c.841G>A	p.Val281Met	missense	Exon 6 of 9	NP_001368914.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
GALK1	ENST00000588479.6	TSL:1 MANE Select	c.841G>A	p.Val281Met	missense	Exon 6 of 8	ENSP00000465930.1
GALK1	ENST00000225614.6	TSL:2	c.841G>A	p.Val281Met	missense	Exon 6 of 9	ENSP00000225614.1
GALK1	ENST00000592997.6	TSL:2	c.751G>A	p.Val251Met	missense	Exon 6 of 8	ENSP00000464765.2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000137

AC:

AN:

219578

AF XY:

0.00000822

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000201

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000118

AC:

AN:

1443796

Hom.:

Cov.:

AF XY:

0.0000125

AC XY:

AN XY:

717938

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33368

American (AMR)

AF:

0.00

AC:

AN:

43842

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25882

East Asian (EAS)

AF:

0.00

AC:

AN:

39376

South Asian (SAS)

AF:

0.0000472

AC:

AN:

84662

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42446

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5728

European-Non Finnish (NFE)

AF:

0.00000992

AC:

AN:

1108612

Other (OTH)

AF:

0.0000167

AC:

AN:

59880

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

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:

0.0000131

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74376

show subpopulations

African (AFR)

AF:

0.0000482

AC:

AN:

41470

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.00000835

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Deficiency of galactokinase

Pathogenic:1Uncertain:1

Feb 20, 2024

Baylor Genetics

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Mar 30, 2018

Counsyl

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Pathogenic

0.45

BayesDel_noAF

Pathogenic

0.40

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.81

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

1.0

M_CAP

Uncertain

0.27

MetaRNN

Pathogenic

0.97

MetaSVM

Pathogenic

0.87

MutationAssessor

Pathogenic

3.8

PhyloP100

7.4

PrimateAI

Uncertain

0.70

PROVEAN

Uncertain

-2.5

REVEL

Pathogenic

0.83

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.051

Polyphen

1.0

Vest4

0.97

MutPred

0.85

Gain of disorder (P = 0.1153)

MVP

0.91

MPC

0.68

ClinPred

0.97

GERP RS

4.8

Varity_R

0.74

gMVP

0.84

Mutation Taster

=1/99

disease causing

(source)

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

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over