rs148834880

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP2

The NM_001008216.2(GALE):c.755T>C(p.Ile252Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000787 in 1,612,912 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000077 ( 0 hom. )

Consequence

GALE
NM_001008216.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 5.61

Publications

4 publications found

Variant links:

Genes affected

GALE (HGNC:4116): (UDP-galactose-4-epimerase) This gene encodes UDP-galactose-4-epimerase which catalyzes two distinct but analogous reactions: the epimerization of UDP-glucose to UDP-galactose, and the epimerization of UDP-N-acetylglucosamine to UDP-N-acetylgalactosamine. The bifunctional nature of the enzyme has the important metabolic consequence that mutant cells (or individuals) are dependent not only on exogenous galactose, but also on exogenous N-acetylgalactosamine as a necessary precursor for the synthesis of glycoproteins and glycolipids. Mutations in this gene result in epimerase-deficiency galactosemia, also referred to as galactosemia type 3, a disease characterized by liver damage, early-onset cataracts, deafness and cognitive disability, with symptoms ranging from mild ('peripheral' form) to severe ('generalized' form). Multiple alternatively spliced transcripts encoding the same protein have been identified. [provided by RefSeq, Jul 2008]

GALE Gene-Disease associations (from GenCC):

galactose epimerase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P, Ambry Genetics

GALE links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 9 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: -0.32246 (below the threshold of 3.09). Trascript score misZ: 0.87424 (below the threshold of 3.09). GenCC associations: The gene is linked to galactose epimerase deficiency.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GALE	NM_001008216.2 link	c.755T>C	p.Ile252Thr	missense_variant	Exon 9 of 12	ENST00000617979.5	NP_001008217.1	Q14376-1A0A384NL38
GALE	NM_000403.4 link	c.755T>C	p.Ile252Thr	missense_variant	Exon 9 of 12		NP_000394.2	Q14376-1A0A384NL38
GALE	NM_001127621.2 link	c.755T>C	p.Ile252Thr	missense_variant	Exon 8 of 11		NP_001121093.1	Q14376-1A0A384NL38

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GALE	ENST00000617979.5 link	c.755T>C	p.Ile252Thr	missense_variant	Exon 9 of 12	1	NM_001008216.2	ENSP00000483375.1		Q14376-1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000191

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000764

AC:

AN:

248636

AF XY:

0.0000893

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000100

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000151

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000774

AC:

113

AN:

1460656

Hom.:

Cov.:

AF XY:

0.0000812

AC XY:

AN XY:

726496

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.0000449

AC:

AN:

44504

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26078

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.00

AC:

AN:

85928

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000936

AC:

104

AN:

1111484

Other (OTH)

AF:

0.0000828

AC:

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

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:

0.0000920

AC:

AN:

152256

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74446

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41554

American (AMR)

AF:

0.00

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000191

AC:

AN:

68010

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.521

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:

0.000157

Hom.:

Bravo

AF:

0.0000982

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000906

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

May 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

GALE: PM3, PM2:Supporting, PP3 -

May 02, 2017

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

UDPglucose-4-epimerase deficiency

Uncertain:1

Sep 07, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 252 of the GALE protein (p.Ile252Thr). This variant is present in population databases (rs148834880, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with GALE-related conditions. ClinVar contains an entry for this variant (Variation ID: 199015). 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 (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C25"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Pathogenic

0.33

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.90

D;D;T;T;.

Eigen

Benign

0.16

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.97

D;.;D;D;D

M_CAP

Benign

0.076

MetaRNN

Uncertain

0.55

D;D;D;D;D

MetaSVM

Uncertain

0.30

MutationAssessor

Benign

2.0

M;M;.;.;.

PhyloP100

5.6

PrimateAI

Uncertain

0.79

PROVEAN

Uncertain

-3.3

.;D;D;D;D

REVEL

Pathogenic

0.73

Sift

Benign

0.042

.;D;D;T;T

Sift4G

Uncertain

0.026

D;D;D;.;T

Polyphen

0.065

B;B;.;.;P

Vest4

0.94

MVP

0.92

MPC

0.31

ClinPred

0.44

GERP RS

4.5

PromoterAI

-0.0012

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.70

gMVP

0.79

Mutation Taster

=34/66

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

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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