chr17-19648987-C-T

Position:

chr17-19648987-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000382.3(ALDH3A2):c.16C>T(p.Arg6Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000883 in 1,586,096 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000091 ( 0 hom. )

Consequence

ALDH3A2
NM_000382.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.259

Variant links:

Genes affected

ALDH3A2 (HGNC:403): (aldehyde dehydrogenase 3 family member A2) Aldehyde dehydrogenase isozymes are thought to play a major role in the detoxification of aldehydes generated by alcohol metabolism and lipid peroxidation. This gene product catalyzes the oxidation of long-chain aliphatic aldehydes to fatty acid. Mutations in the gene cause Sjogren-Larsson syndrome. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ALDH3A2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ALDH3A2	NM_000382.3 linkuse as main transcript	c.16C>T	p.Arg6Trp	missense_variant	1/10	ENST00000176643.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALDH3A2	ENST00000176643.11 linkuse as main transcript	c.16C>T	p.Arg6Trp	missense_variant	1/10	1	NM_000382.3	P1	P51648-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152240

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000101

AC:

AN:

197790

Hom.:

AF XY:

0.00000933

AC XY:

AN XY:

107182

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:

0.0000237

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000907

AC:

AN:

1433856

Hom.:

Cov.:

AF XY:

0.0000113

AC XY:

AN XY:

710698

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:

0.0000118

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74378

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000624

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 08, 2022

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 6 of the ALDH3A2 protein (p.Arg6Trp). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with ALDH3A2-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ALDH3A2 protein function. 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

0.15

BayesDel_addAF

Uncertain

0.055

BayesDel_noAF

Benign

-0.16

CADD

Uncertain

DANN

Benign

0.89

DEOGEN2

Benign

0.21

.;T;.;.;D;.;D;.;D

Eigen

Benign

0.0097

Eigen_PC

Benign

-0.15

FATHMM_MKL

Benign

0.34

LIST_S2

Benign

0.83

T;T;.;.;T;.;.;T;.

M_CAP

Pathogenic

0.68

MetaRNN

Uncertain

0.56

D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

-0.19

MutationAssessor

Uncertain

2.1

.;.;.;.;M;M;M;M;M

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Uncertain

0.50

PROVEAN

Uncertain

-3.1

D;.;.;.;N;.;N;N;.

REVEL

Uncertain

0.36

Sift

Uncertain

0.0020

D;.;.;.;D;.;D;D;.

Sift4G

Uncertain

0.0080

D;D;D;D;D;D;D;D;D

Polyphen

0.98, 0.99

.;.;.;.;D;D;D;D;D

Vest4

0.11, 0.074, 0.082, 0.15, 0.16, 0.14, 0.18

MutPred

0.51

Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);Loss of disorder (P = 0.0162);

MVP

0.97

MPC

0.61

ClinPred

0.94

GERP RS

4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.25

gMVP

0.33

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