rs752005255

Positions:

chr6-24533639-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001080.3(ALDH5A1):c.1535T>G(p.Leu512Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000322 in 1,613,968 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

ALDH5A1
NM_001080.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.67

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 Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.805

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
ALDH5A1	NM_001080.3 linkuse as main transcript	c.1535T>G	p.Leu512Arg	missense_variant	10/10	ENST00000357578.8	NP_001071.1
ALDH5A1	NM_170740.1 linkuse as main transcript	c.1574T>G	p.Leu525Arg	missense_variant	11/11		NP_733936.1
ALDH5A1	NM_001368954.1 linkuse as main transcript	c.1391T>G	p.Leu464Arg	missense_variant	9/9		NP_001355883.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ALDH5A1	ENST00000357578.8 linkuse as main transcript	c.1535T>G	p.Leu512Arg	missense_variant	10/10	1	NM_001080.3	ENSP00000350191	P1	P51649-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152078

Hom.:

Cov.:

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000278

AC:

AN:

251488

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135920

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:

0.00

Gnomad NFE exome

AF:

0.0000527

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000328

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000330

AC XY:

AN XY:

727248

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:

0.00

Gnomad4 NFE exome

AF:

0.0000378

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152078

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74304

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:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000480

Hom.:

Bravo

AF:

0.0000227

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 10, 2022

The c.1535T>G (p.L512R) alteration is located in exon 10 (coding exon 10) of the ALDH5A1 gene. This alteration results from a T to G substitution at nucleotide position 1535, causing the leucine (L) at amino acid position 512 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Succinate-semialdehyde dehydrogenase deficiency

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 19, 2022

This sequence change replaces leucine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 512 of the ALDH5A1 protein (p.Leu512Arg). This variant is present in population databases (rs752005255, gnomAD 0.005%). This variant has not been reported in the literature in individuals affected with ALDH5A1-related conditions. ClinVar contains an entry for this variant (Variation ID: 529482). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Uncertain

0.069

BayesDel_noAF

Uncertain

0.020

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.67

D;T;.

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.98

D;D;D

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.80

D;D;D

MetaSVM

Uncertain

0.52

MutationAssessor

Uncertain

2.4

M;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-5.0

D;D;D

REVEL

Pathogenic

0.77

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.46

MutPred

0.85

Gain of methylation at L512 (P = 0.0123);.;.;

MVP

0.99

MPC

1.1

ClinPred

0.93

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.98

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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