rs878853028

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_005787.6(ALG3):​c.14T>G​(p.Leu5Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000021 in 1,431,554 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L5V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ALG3
NM_005787.6 missense

Scores

5
14

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.14

Publications

1 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 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.
BP4
Computational evidence support a benign effect (MetaRNN=0.10181606).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ALG3NM_005787.6 linkc.14T>G p.Leu5Arg missense_variant Exon 1 of 9 ENST00000397676.8 NP_005778.1 Q92685-1
ALG3NR_024533.1 linkn.45T>G non_coding_transcript_exon_variant Exon 1 of 8
ALG3NR_024534.1 linkn.45T>G non_coding_transcript_exon_variant Exon 1 of 9
ALG3NM_001006941.2 linkc.52+299T>G intron_variant Intron 1 of 8 NP_001006942.1 Q92685-2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ALG3ENST00000397676.8 linkc.14T>G p.Leu5Arg missense_variant Exon 1 of 9 1 NM_005787.6 ENSP00000380793.3 Q92685-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000506
AC:
1
AN:
197636
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000116
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000210
AC:
3
AN:
1431554
Hom.:
0
Cov.:
34
AF XY:
0.00000141
AC XY:
1
AN XY:
709350
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32980
American (AMR)
AF:
0.00
AC:
0
AN:
41270
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25656
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38446
South Asian (SAS)
AF:
0.00
AC:
0
AN:
83736
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
46304
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5716
European-Non Finnish (NFE)
AF:
0.00000182
AC:
2
AN:
1098274
Other (OTH)
AF:
0.0000169
AC:
1
AN:
59172
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.558
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
32
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.067
BayesDel_addAF
Uncertain
0.14
D
BayesDel_noAF
Uncertain
-0.040
CADD
Benign
17
DANN
Uncertain
0.99
DEOGEN2
Benign
0.079
T
Eigen
Benign
-0.55
Eigen_PC
Benign
-0.34
FATHMM_MKL
Benign
0.42
N
LIST_S2
Benign
0.72
T
M_CAP
Benign
0.077
D
MetaRNN
Benign
0.10
T
MetaSVM
Benign
-0.81
T
MutationAssessor
Benign
1.5
L
PhyloP100
1.1
PrimateAI
Uncertain
0.58
T
PROVEAN
Benign
0.74
N
REVEL
Uncertain
0.31
Sift
Benign
0.88
T
Sift4G
Benign
0.83
T
Polyphen
0.013
B
Vest4
0.43
MVP
0.84
MPC
0.13
ClinPred
0.21
T
GERP RS
4.5
PromoterAI
0.11
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
2.0
Varity_R
0.32
gMVP
0.54
Mutation Taster
=85/15
polymorphism

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

Other links and lift over

dbSNP: rs878853028; hg19: chr3-183966715; API