Genetic Variant GALC:p.Thr529Met (chr14-87945637-G-A) – ACMG Classification: Pathogenic (13 pts)

Variant summary

Our verdict is Pathogenic. The variant received 13 ACMG points: 13P and 0B. PM1PP2PP3_ModeratePP5_Very_Strong

The NM_000153.4(GALC):c.1586C>T(p.Thr529Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000104 in 1,609,134 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. T529T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000086 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

GALC
NM_000153.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:18O:1

Conservation

PhyloP100: 9.74

Publications

27 publications found

Variant links:

Genes affected

GALC (HGNC:4115): (galactosylceramidase) This gene encodes a lysosomal protein which hydrolyzes the galactose ester bonds of galactosylceramide, galactosylsphingosine, lactosylceramide, and monogalactosyldiglyceride. Mutations in this gene have been associated with Krabbe disease, also known as globoid cell leukodystrophy. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

GALC Gene-Disease associations (from GenCC):

Krabbe disease
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Genomics England PanelApp, ClinGen, G2P, Labcorp Genetics (formerly Invitae), Myriad Women’s Health

GALC links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 13 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 5 uncertain in NM_000153.4

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 94 curated pathogenic missense variants (we use a threshold of 10). The gene has 16 curated benign missense variants. Gene score misZ: 0.18582 (below the threshold of 3.09). Trascript score misZ: -0.28853 (below the threshold of 3.09). GenCC associations: The gene is linked to Krabbe disease.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.907

PP5

Variant 14-87945637-G-A is Pathogenic according to our data. Variant chr14-87945637-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 370073.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000153.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GALC	NM_000153.4	MANE Select	c.1586C>T	p.Thr529Met	missense	Exon 14 of 17	NP_000144.2	P54803-1
GALC	NM_001201401.2		c.1517C>T	p.Thr506Met	missense	Exon 13 of 16	NP_001188330.1	P54803-3
GALC	NM_001201402.2		c.1508C>T	p.Thr503Met	missense	Exon 14 of 17	NP_001188331.1	P54803-4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GALC	ENST00000261304.7	TSL:1 MANE Select	c.1586C>T	p.Thr529Met	missense	Exon 14 of 17	ENSP00000261304.2	P54803-1
GALC	ENST00000921945.1		c.1547C>T	p.Thr516Met	missense	Exon 13 of 16	ENSP00000592004.1
GALC	ENST00000950382.1		c.1520C>T	p.Thr507Met	missense	Exon 14 of 17	ENSP00000620441.1

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

151984

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000100

AC:

AN:

248976

AF XY:

0.000104

show subpopulations

Gnomad AFR exome

AF:

0.0000647

Gnomad AMR exome

AF:

0.0000581

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000464

Gnomad NFE exome

AF:

0.000186

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000106

AC:

155

AN:

1457150

Hom.:

Cov.:

AF XY:

0.000105

AC XY:

AN XY:

725210

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33320

American (AMR)

AF:

0.0000448

AC:

AN:

44604

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26048

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86192

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.000133

AC:

147

AN:

1107970

Other (OTH)

AF:

0.0000498

AC:

AN:

60196

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

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:

0.0000855

AC:

AN:

151984

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74228

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41408

American (AMR)

AF:

0.0000656

AC:

AN:

15236

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5152

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.0000943

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

67970

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

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:

0.000145

Hom.:

Bravo

AF:

0.000110

ESP6500AA

AF:

0.000267

AC:

ESP6500EA

AF:

0.000244

AC:

ExAC

AF:

0.0000662

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Pathogenic/Likely pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Galactosylceramide beta-galactosidase deficiency (11)

not provided (7)

GALC-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.49

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.84

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.99

M_CAP

Pathogenic

0.36

MetaRNN

Pathogenic

0.91

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.1

PhyloP100

9.7

PrimateAI

Uncertain

0.60

PROVEAN

Uncertain

-3.4

REVEL

Pathogenic

0.76

Sift

Benign

0.039

Sift4G

Uncertain

0.014

Polyphen

1.0

Vest4

0.94

MVP

1.0

MPC

0.59

ClinPred

0.56

GERP RS

5.5

Varity_R

0.24

gMVP

0.83

Mutation Taster

=2/98

disease causing (ClinVar)

(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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over