NM_000153.4:c.1302C>A

Variant names:

• chr14-87949881-G-T
• NM_000153.4:c.1302C>A
• GALC p.Ser434Ser

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_000153.4(GALC):​c.1302C>A​(p.Ser434Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S434S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: GALC NM_000153.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.36
• Publications: 0 publications found

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: Genomics England PanelApp, ClinGen, Laboratory for Molecular Medicine, G2P, Labcorp Genetics (formerly Invitae), Myriad Women's Health

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BP7: Synonymous conserved (PhyloP=-1.36 with no splicing effect.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALC	NM_000153.4	MANE Select	c.1302C>A	p.Ser434Ser	synonymous	Exon 12 of 17	NP_000144.2	P54803-1
	GALC	NM_001201401.2		c.1233C>A	p.Ser411Ser	synonymous	Exon 11 of 16	NP_001188330.1	P54803-3
	GALC	NM_001201402.2		c.1224C>A	p.Ser408Ser	synonymous	Exon 12 of 17	NP_001188331.1	P54803-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GALC	ENST00000261304.7	TSL:1 MANE Select	c.1302C>A	p.Ser434Ser	synonymous	Exon 12 of 17	ENSP00000261304.2	P54803-1
	GALC	ENST00000921945.1		c.1263C>A	p.Ser421Ser	synonymous	Exon 11 of 16	ENSP00000592004.1
	GALC	ENST00000393568.8	TSL:2	c.1233C>A	p.Ser411Ser	synonymous	Exon 11 of 16	ENSP00000377198.4	P54803-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 26

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	0.14
DANN	Benign	0.61
PhyloP100		-1.4

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr14-88416225;