rs11623
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1PM5PP3_StrongPP5_Moderate
The NM_000153.4(GALC):c.169G>T(p.Gly57Cys) variant causes a missense change. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G57R) has been classified as Likely pathogenic.
Frequency
Genomes: not found (cov: 33)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
GALC
NM_000153.4 missense
NM_000153.4 missense
Scores
12
6
1
Clinical Significance
Conservation
PhyloP100: 6.91
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]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 10 ACMG points.
PM1
?
In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in NM_000153.4
PM5
?
Other missense variant is known to change same aminoacid residue: Variant chr14-87992996-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1324445.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.949
PP5
?
Variant 14-87992996-C-A is Pathogenic according to our data. Variant chr14-87992996-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1346242.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GALC | NM_000153.4 | c.169G>T | p.Gly57Cys | missense_variant | 1/17 | ENST00000261304.7 | |
GALC | NM_001201401.2 | c.169G>T | p.Gly57Cys | missense_variant | 1/16 | ||
GALC | NM_001201402.2 | c.117+387G>T | intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GALC | ENST00000261304.7 | c.169G>T | p.Gly57Cys | missense_variant | 1/17 | 1 | NM_000153.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1382936Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 684312
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
AC:
0
AN:
1382936
Hom.:
Cov.:
33
AF XY:
AC XY:
0
AN XY:
684312
Gnomad4 AFR exome
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Gnomad4 EAS exome
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Gnomad4 FIN exome
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GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Galactosylceramide beta-galactosidase deficiency Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Aug 21, 2021 | This sequence change replaces glycine with cysteine at codon 57 of the GALC protein (p.Gly57Cys). The glycine residue is highly conserved and there is a large physicochemical difference between glycine and cysteine. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the ExAC database. This variant has not been reported in the literature in individuals affected with GALC-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt GALC protein function. This variant disrupts the p.Gly57 amino acid residue in GALC. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 21070211). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Pathogenic
D;.
Eigen
Pathogenic
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;T
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D
MetaSVM
Pathogenic
D
MutationAssessor
Pathogenic
M;M
MutationTaster
Benign
D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;D
REVEL
Pathogenic
Sift
Uncertain
D;D
Sift4G
Uncertain
D;D
Polyphen
D;.
Vest4
MutPred
Gain of catalytic residue at S62 (P = 0);Gain of catalytic residue at S62 (P = 0);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at