Genetic Variant FUCA1:p.Gly425Glu (chr1-23845842-C-T) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_000147.5(FUCA1):c.1274G>A(p.Gly425Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000905 in 1,614,096 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00036 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

FUCA1
NM_000147.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.45

Publications

2 publications found

Variant links:

Genes affected

FUCA1 (HGNC:4006): (alpha-L-fucosidase 1) The protein encoded by this gene is a lysosomal enzyme involved in the degradation of fucose-containing glycoproteins and glycolipids. Mutations in this gene are associated with fucosidosis (FUCA1D), which is an autosomal recessive lysosomal storage disease. A pseudogene of this locus is present on chr 2.[provided by RefSeq, Oct 2009]

FUCA1 Gene-Disease associations (from GenCC):

fucosidosis
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, Genomics England PanelApp, Ambry Genetics, ClinGen

FUCA1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000361 (55/152242) while in subpopulation AFR AF = 0.0012 (50/41528). AF 95% confidence interval is 0.000938. There are 0 homozygotes in GnomAd4. There are 24 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000147.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
FUCA1	NM_000147.5	MANE Select	c.1274G>A	p.Gly425Glu	missense	Exon 8 of 8	NP_000138.2
FUCA1	NR_174379.1		n.1452G>A		non_coding_transcript_exon	Exon 8 of 8
FUCA1	NR_174380.1		n.1501G>A		non_coding_transcript_exon	Exon 9 of 9

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
FUCA1	ENST00000374479.4	TSL:1 MANE Select	c.1274G>A	p.Gly425Glu	missense	Exon 8 of 8	ENSP00000363603.3
FUCA1	ENST00000881205.1		c.1073G>A	p.Gly358Glu	missense	Exon 7 of 7	ENSP00000551264.1
FUCA1	ENST00000965619.1		c.1261-65G>A		intron	N/A	ENSP00000635678.1

Frequencies

GnomAD3 genomes

AF:

0.000362

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00121

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000131

AC:

AN:

251356

AF XY:

0.000118

show subpopulations

Gnomad AFR exome

AF:

0.00142

Gnomad AMR exome

AF:

0.000173

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000622

AC:

AN:

1461854

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

727234

show subpopulations

African (AFR)

AF:

0.00116

AC:

AN:

33480

American (AMR)

AF:

0.000157

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000360

AC:

AN:

1111982

Other (OTH)

AF:

0.0000828

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

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:

0.000361

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

AN XY:

74440

show subpopulations

African (AFR)

AF:

0.00120

AC:

AN:

41528

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.536

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:

0.000218

Hom.:

Bravo

AF:

0.000419

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000214

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Fucosidosis (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Uncertain

0.025

BayesDel_noAF

Pathogenic

0.23

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.77

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.74

M_CAP

Benign

0.068

MetaRNN

Uncertain

0.56

MetaSVM

Uncertain

0.13

MutationAssessor

Pathogenic

3.7

PhyloP100

5.5

PrimateAI

Uncertain

0.55

PROVEAN

Pathogenic

-7.5

REVEL

Uncertain

0.56

Sift

Uncertain

0.019

Sift4G

Uncertain

0.017

Polyphen

0.99

Vest4

0.75

MVP

0.92

MPC

1.2

ClinPred

0.35

GERP RS

5.5

Varity_R

0.81

gMVP

0.91

Mutation Taster

=12/88

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over