dbSNP rs28940588: ALG3:p.Gly118Asp (chr3-184245559-C-T) – ACMG Classification: Likely_pathogenic (8 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2PP2PP3_StrongPP5

The NM_005787.6(ALG3):c.353G>A(p.Gly118Asp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)

Consequence

ALG3
NM_005787.6 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 6.15

Publications

22 publications found

Variant links:

Genes affected

ALG3 (HGNC:23056): (ALG3 alpha-1,3- mannosyltransferase) This gene encodes a member of the ALG3 family. The encoded protein catalyses the addition of the first dol-P-Man derived mannose in an alpha 1,3 linkage to Man5GlcNAc2-PP-Dol. Defects in this gene have been associated with congenital disorder of glycosylation type Id (CDG-Id) characterized by abnormal N-glycosylation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2008]

ALG3 Gene-Disease associations (from GenCC):

ALG3-congenital disorder of glycosylation
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P, ClinGen, PanelApp Australia, Orphanet

ALG3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 16 curated pathogenic missense variants (we use a threshold of 10). The gene has 5 curated benign missense variants. Gene score misZ: -0.31675 (below the threshold of 3.09). Trascript score misZ: 0.74965 (below the threshold of 3.09). GenCC associations: The gene is linked to ALG3-congenital disorder of glycosylation.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.986

PP5

Variant 3-184245559-C-T is Pathogenic according to our data. Variant chr3-184245559-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 2127.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
ALG3	NM_005787.6 link	c.353G>A	p.Gly118Asp	missense_variant	Exon 3 of 9	ENST00000397676.8	NP_005778.1
ALG3	NM_001006941.2 link	c.209G>A	p.Gly70Asp	missense_variant	Exon 3 of 9		NP_001006942.1
ALG3	NR_024533.1 link	n.284G>A		non_coding_transcript_exon_variant	Exon 2 of 8
ALG3	NR_024534.1 link	n.347G>A		non_coding_transcript_exon_variant	Exon 3 of 9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALG3	ENST00000397676.8 link	c.353G>A	p.Gly118Asp	missense_variant	Exon 3 of 9	1	NM_005787.6	ENSP00000380793.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

ALG3-congenital disorder of glycosylation

Pathogenic:1

Dec 01, 1999

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.89

BayesDel_addAF

Pathogenic

0.46

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.85

D;.;.

Eigen

Pathogenic

0.86

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Uncertain

0.27

MetaRNN

Pathogenic

0.99

D;D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.6

H;.;.

PhyloP100

6.2

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-7.0

D;D;D

REVEL

Pathogenic

0.93

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;.;D

Vest4

0.92

MutPred

0.90

Gain of relative solvent accessibility (P = 0.0082);.;.;

MVP

0.99

MPC

0.53

ClinPred

1.0

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.96

gMVP

0.97

Mutation Taster

=0/100

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over