rs201959100

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_033087.4(ALG2):c.167C>T(p.Pro56Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000342 in 1,598,192 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00060 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00032 ( 3 hom. )

Consequence

ALG2
NM_033087.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 8.69

Variant links:

Genes affected

ALG2 (HGNC:23159): (ALG2 alpha-1,3/1,6-mannosyltransferase) This gene encodes a member of the glycosyltransferase 1 family. The encoded protein acts as an alpha 1,3 mannosyltransferase, mannosylating Man(2)GlcNAc(2)-dolichol diphosphate and Man(1)GlcNAc(2)-dolichol diphosphate to form Man(3)GlcNAc(2)-dolichol diphosphate. Defects in this gene have been associated with congenital disorder of glycosylation type Ih (CDG-Ii). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2008]

ALG2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013409823).

BP6

Variant 9-99221728-G-A is Benign according to our data. Variant chr9-99221728-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 382799.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=2, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000597 (91/152354) while in subpopulation EAS AF= 0.0104 (54/5190). AF 95% confidence interval is 0.00819. There are 1 homozygotes in gnomad4. There are 50 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ALG2	NM_033087.4 link	c.167C>T	p.Pro56Leu	missense_variant	Exon 1 of 2	ENST00000476832.2	NP_149078.1	Q9H553-1A0A024R184
ALG2	NR_024532.2 link	n.215C>T		non_coding_transcript_exon_variant	Exon 1 of 3
ALG2	XM_047423996.1 link	c.-681C>T		upstream_gene_variant			XP_047279952.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALG2	ENST00000476832.2 link	c.167C>T	p.Pro56Leu	missense_variant	Exon 1 of 2	1	NM_033087.4	ENSP00000417764.1		Q9H553-1
ALG2	ENST00000238477.5 link	n.167C>T		non_coding_transcript_exon_variant	Exon 1 of 3	2		ENSP00000432675.2		A0A0A0MTE0

Frequencies

GnomAD3 genomes

AF:

0.000585

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0100

Gnomad SAS

AF:

0.00393

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000930

AC:

206

AN:

221450

Hom.:

AF XY:

0.000826

AC XY:

102

AN XY:

123484

show subpopulations

Gnomad AFR exome

AF:

0.000443

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00947

Gnomad SAS exome

AF:

0.000896

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00142

GnomAD4 exome

AF:

0.000315

AC:

456

AN:

1445838

Hom.:

Cov.:

AF XY:

0.000340

AC XY:

245

AN XY:

719758

show subpopulations

Gnomad4 AFR exome

AF:

0.000180

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00426

Gnomad4 SAS exome

AF:

0.00166

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000990

Gnomad4 OTH exome

AF:

0.00208

GnomAD4 genome

AF:

0.000597

AC:

AN:

152354

Hom.:

Cov.:

AF XY:

0.000671

AC XY:

AN XY:

74508

show subpopulations

Gnomad4 AFR

AF:

0.000313

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0104

Gnomad4 SAS

AF:

0.00393

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000295

Hom.:

Bravo

AF:

0.000325

ExAC

AF:

0.000858

AC:

102

Asia WGS

AF:

0.0250

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

ALG2-congenital disorder of glycosylation;C4015597:Congenital myasthenic syndrome 14

Benign:2

Mar 10, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Jun 22, 2023

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

BS1 -

not specified

Benign:1

Dec 15, 2016

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.084

BayesDel_noAF

Uncertain

0.11

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.58

Eigen

Pathogenic

0.69

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

MetaRNN

Benign

0.013

MetaSVM

Uncertain

0.094

MutationAssessor

Uncertain

2.4

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-6.6

REVEL

Pathogenic

0.68

Sift

Benign

0.036

Sift4G

Benign

0.10

Polyphen

0.97

Vest4

0.70

MVP

0.93

MPC

0.38

ClinPred

0.059

GERP RS

4.7

Varity_R

0.43

gMVP

0.71

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over