11-78109441-C-A

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_024079.5(ALG8):​c.1038+1G>T variant causes a splice donor change. The variant allele was found at a frequency of 0.000104 in 1,613,992 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as no classifications from unflagged records (no stars).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

ALG8
NM_024079.5 splice_donor

Scores

5
1
1
Splicing: ADA: 1.000
2

Clinical Significance

no classifications from unflagged records no classifications from unflagged records P:1

Conservation

PhyloP100: 7.07
Variant links:
Genes affected
ALG8 (HGNC:23161): (ALG8 alpha-1,3-glucosyltransferase) This gene encodes a member of the ALG6/ALG8 glucosyltransferase family. The encoded protein catalyzes the addition of the second glucose residue to the lipid-linked oligosaccharide precursor for N-linked glycosylation of proteins. Mutations in this gene have been associated with congenital disorder of glycosylation type Ih (CDG-Ih). Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1
Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 11-78109441-C-A is Pathogenic according to our data. Variant chr11-78109441-C-A is described in ClinVar as [no_classifications_from_unflagged_records]. Clinvar id is 492976.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=1}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ALG8NM_024079.5 linkuse as main transcriptc.1038+1G>T splice_donor_variant ENST00000299626.10 NP_076984.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ALG8ENST00000299626.10 linkuse as main transcriptc.1038+1G>T splice_donor_variant 1 NM_024079.5 ENSP00000299626 P3Q9BVK2-1

Frequencies

GnomAD3 genomes
AF:
0.000131
AC:
20
AN:
152132
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.00170
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000263
AC:
66
AN:
251416
Hom.:
0
AF XY:
0.000258
AC XY:
35
AN XY:
135876
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 SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00268
Gnomad NFE exome
AF:
0.0000616
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000101
AC:
148
AN:
1461860
Hom.:
0
Cov.:
32
AF XY:
0.000113
AC XY:
82
AN XY:
727230
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00256
Gnomad4 NFE exome
AF:
0.00000719
Gnomad4 OTH exome
AF:
0.0000497
GnomAD4 genome
AF:
0.000131
AC:
20
AN:
152132
Hom.:
0
Cov.:
32
AF XY:
0.000202
AC XY:
15
AN XY:
74318
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00170
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000181
Hom.:
0
ExAC
AF:
0.000165
AC:
20

ClinVar

Significance: no classifications from unflagged records
Submissions summary: Pathogenic:1
Revision: no classifications from unflagged records
LINK: link

Submissions by phenotype

Polycystic liver disease 3 with or without kidney cysts Pathogenic:1
Pathogenic, flagged submissionliterature onlyOMIMFeb 21, 2018- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.50
D
BayesDel_noAF
Pathogenic
0.44
CADD
Pathogenic
33
DANN
Uncertain
1.0
Eigen
Pathogenic
1.2
Eigen_PC
Pathogenic
1.1
FATHMM_MKL
Pathogenic
0.99
D
MutationTaster
Benign
1.0
D;D
GERP RS
5.7

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.94
SpliceAI score (max)
0.68
Details are displayed if max score is > 0.2
DS_DL_spliceai
0.68
Position offset: 1

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.

Other links and lift over

dbSNP: rs202112771; hg19: chr11-77820487; COSMIC: COSV55199129; COSMIC: COSV55199129; API