dbSNP rs149482918: ALDH5A1:p.Ala296Thr (chr6-24520416-G-A) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_001080.3(ALDH5A1):c.886G>A(p.Ala296Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0015 in 1,614,018 control chromosomes in the GnomAD database, including 68 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0020 ( 6 hom., cov: 32)

Exomes 𝑓: 0.0014 ( 62 hom. )

Consequence

ALDH5A1
NM_001080.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 9.74

Publications

10 publications found

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 Gene-Disease associations (from GenCC):

succinic semialdehyde dehydrogenase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P, ClinGen

ALDH5A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 55 curated pathogenic missense variants (we use a threshold of 10). The gene has 13 curated benign missense variants. Gene score misZ: 0.73405 (below the threshold of 3.09). Trascript score misZ: 0.28023 (below the threshold of 3.09). GenCC associations: The gene is linked to succinic semialdehyde dehydrogenase deficiency.

BP4

Computational evidence support a benign effect (MetaRNN=0.011575848).

BP6

Variant 6-24520416-G-A is Benign according to our data. Variant chr6-24520416-G-A is described in ClinVar as Benign. ClinVar VariationId is 235630.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.00204 (311/152220) while in subpopulation AMR AF = 0.0183 (280/15286). AF 95% confidence interval is 0.0166. There are 6 homozygotes in GnomAd4. There are 134 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 6 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001080.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ALDH5A1	NM_001080.3	MANE Select	c.886G>A	p.Ala296Thr	missense	Exon 6 of 10	NP_001071.1	X5DQN2
ALDH5A1	NM_170740.1		c.925G>A	p.Ala309Thr	missense	Exon 7 of 11	NP_733936.1	X5D299
ALDH5A1	NM_001368954.1		c.742G>A	p.Ala248Thr	missense	Exon 5 of 9	NP_001355883.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ALDH5A1	ENST00000357578.8	TSL:1 MANE Select	c.886G>A	p.Ala296Thr	missense	Exon 6 of 10	ENSP00000350191.3	P51649-1
ALDH5A1	ENST00000348925.2	TSL:1	c.925G>A	p.Ala309Thr	missense	Exon 7 of 11	ENSP00000314649.3	P51649-2
ALDH5A1	ENST00000859838.1		c.868G>A	p.Ala290Thr	missense	Exon 7 of 11	ENSP00000529897.1

Frequencies

GnomAD3 genomes

AF:

0.00200

AC:

304

AN:

152102

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000507

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0179

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00239

GnomAD2 exomes

AF:

0.00679

AC:

1707

AN:

251374

AF XY:

0.00493

show subpopulations

Gnomad AFR exome

AF:

0.000369

Gnomad AMR exome

AF:

0.0482

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00505

GnomAD4 exome

AF:

0.00144

AC:

2105

AN:

1461798

Hom.:

Cov.:

AF XY:

0.00117

AC XY:

852

AN XY:

727196

show subpopulations

African (AFR)

AF:

0.000329

AC:

AN:

33478

American (AMR)

AF:

0.0441

AC:

1972

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000812

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5728

European-Non Finnish (NFE)

AF:

0.0000216

AC:

AN:

1111986

Other (OTH)

AF:

0.00149

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

170

340

510

680

850

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

102

136

170

<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

AF:

0.00204

AC:

311

AN:

152220

Hom.:

Cov.:

AF XY:

0.00180

AC XY:

134

AN XY:

74410

show subpopulations

African (AFR)

AF:

0.000506

AC:

AN:

41534

American (AMR)

AF:

0.0183

AC:

280

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.000193

AC:

AN:

5182

South Asian (SAS)

AF:

0.000415

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68022

Other (OTH)

AF:

0.00237

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000961

Hom.:

Bravo

AF:

0.00494

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.00551

AC:

669

Asia WGS

AF:

0.00202

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Succinate-semialdehyde dehydrogenase deficiency (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Uncertain

0.084

BayesDel_noAF

Pathogenic

0.38

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.42

Eigen

Pathogenic

0.91

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

MetaRNN

Benign

0.012

MetaSVM

Pathogenic

0.93

MutationAssessor

Uncertain

2.5

PhyloP100

9.7

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.8

REVEL

Pathogenic

0.83

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.028

Polyphen

1.0

Vest4

0.87

MVP

0.98

MPC

0.88

ClinPred

0.047

GERP RS

5.5

Varity_R

0.66

gMVP

0.80

Mutation Taster

=37/63

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over