Variant 16-5083682-T-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_019109.5(ALG1):c.1188T>A(p.Cys396Ter) variant causes a stop gained, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,448,572 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 predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ALG1
NM_019109.5 stop_gained, splice_region

Scores

Splicing: ADA: 0.0002271

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 0.585

Variant links:

Genes affected

ALG1 (HGNC:18294): (ALG1 chitobiosyldiphosphodolichol beta-mannosyltransferase) The enzyme encoded by this gene catalyzes the first mannosylation step in the biosynthesis of lipid-linked oligosaccharides. This gene is mutated in congenital disorder of glycosylation type Ik. [provided by RefSeq, Dec 2008]

ALG1 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-5083682-T-A is Pathogenic according to our data. Variant chr16-5083682-T-A is described in ClinVar as [Pathogenic]. Clinvar id is 30538.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
ALG1	NM_019109.5 linkuse as main transcript	c.1188T>A	p.Cys396Ter	stop_gained, splice_region_variant	12/13	ENST00000262374.10
ALG1	NM_001330504.2 linkuse as main transcript	c.855T>A	p.Cys285Ter	stop_gained, splice_region_variant	12/13
ALG1	XM_017023457.3 linkuse as main transcript	c.1149T>A	p.Cys383Ter	stop_gained, splice_region_variant	11/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALG1	ENST00000262374.10 linkuse as main transcript	c.1188T>A	p.Cys396Ter	stop_gained, splice_region_variant	12/13	1	NM_019109.5	P1	Q9BT22-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000419

AC:

AN:

238498

Hom.:

AF XY:

0.00000767

AC XY:

AN XY:

130350

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1448572

Hom.:

Cov.:

AF XY:

0.00000277

AC XY:

AN XY:

720896

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000829

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

ALG1-congenital disorder of glycosylation

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Nov 01, 2010

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.55

BayesDel_noAF

Pathogenic

0.56

CADD

Pathogenic

DANN

Uncertain

0.98

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Uncertain

0.90

MutationTaster

Benign

1.0

A;A;A

Vest4

0.87

GERP RS

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00023

dbscSNV1_RF

Benign

0.28

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