rs118203983

Positions:

chr6-24528057-C-T

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_001080.3(ALDH5A1):c.1234C>T(p.Arg412Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000428 in 1,613,944 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000044 ( 0 hom. )

Consequence

ALDH5A1
NM_001080.3 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:7

Conservation

PhyloP100: 3.64

Variant links:

Genes affected

ALDH5A1 (HGNC:408): (aldehyde dehydrogenase 5 family member A1) This protein belongs to the aldehyde dehydrogenase family of proteins. This gene encodes a mitochondrial NAD(+)-dependent succinic semialdehyde dehydrogenase. A deficiency of this enzyme, known as 4-hydroxybutyricaciduria, is a rare inborn error in the metabolism of the neurotransmitter 4-aminobutyric acid (GABA). In response to the defect, physiologic fluids from patients accumulate GHB, a compound with numerous neuromodulatory properties. Two transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

ALDH5A1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 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 6-24528057-C-T is Pathogenic according to our data. Variant chr6-24528057-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 1358.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-24528057-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
ALDH5A1	NM_001080.3 linkuse as main transcript	c.1234C>T	p.Arg412Ter	stop_gained	8/10	ENST00000357578.8
ALDH5A1	NM_170740.1 linkuse as main transcript	c.1273C>T	p.Arg425Ter	stop_gained	9/11
ALDH5A1	NM_001368954.1 linkuse as main transcript	c.1090C>T	p.Arg364Ter	stop_gained	7/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALDH5A1	ENST00000357578.8 linkuse as main transcript	c.1234C>T	p.Arg412Ter	stop_gained	8/10	1	NM_001080.3	P1	P51649-1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251426

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135874

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

0.00

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000438

AC:

AN:

1461838

Hom.:

Cov.:

AF XY:

0.0000440

AC XY:

AN XY:

727216

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000468

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000443

Hom.:

Bravo

AF:

0.0000567

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Succinate-semialdehyde dehydrogenase deficiency

Pathogenic:6

Pathogenic, no assertion criteria provided	literature only	OMIM	Dec 01, 2003	- -
Pathogenic, criteria provided, single submitter	clinical testing	New York Genome Center	Jun 22, 2021	- -
Pathogenic, criteria provided, single submitter	research	Cavalleri Lab, Royal College of Surgeons in Ireland	Dec 11, 2019	ACMG evidence PVS1, PM3, PP5 -
Pathogenic, criteria provided, single submitter	curation	Elsea Laboratory, Baylor College of Medicine	Mar 08, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Apr 07, 2023	For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 1358). This premature translational stop signal has been observed in individual(s) with succinic semialdehyde dehydrogenase deficiency (PMID: 11243727). This variant is present in population databases (rs118203983, gnomAD 0.006%). This sequence change creates a premature translational stop signal (p.Arg412*) in the ALDH5A1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ALDH5A1 are known to be pathogenic (PMID: 14635103). -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jan 30, 2021	- -

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

May 15, 2023

Not observed at significant frequency in large population cohorts (gnomAD); Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 28191889, 31589614, 25525159, 32238909, 32395407, 25558043, Hongliang2019[article], 16442322, 25431891, 20804942, 14635103, 11243727) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.50

BayesDel_noAF

Pathogenic

0.63

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.76

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.98

MutationTaster

Benign

1.0

A;A;A;A

Vest4

0.93

GERP RS

3.9

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