Genetic Variant ALDH3B1:p.Arg442Cys (chr11-68027856-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_000694.4(ALDH3B1):c.1324C>T(p.Arg442Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000322 in 1,550,396 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

ALDH3B1
NM_000694.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.13

Variant links:

Genes affected

ALDH3B1 (HGNC:410): (aldehyde dehydrogenase 3 family member B1) This gene encodes a member of the aldehyde dehydrogenase protein family. Aldehyde dehydrogenases are a family of isozymes that may play a major role in the detoxification of aldehydes generated by alcohol metabolism and lipid peroxidation. The encoded protein is able to oxidize long-chain fatty aldehydes in vitro, and may play a role in protection from oxidative stress. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

ALDH3B1 links:

ENSG00000255306 (HGNC:56861):

ENSG00000255306 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38953963).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ALDH3B1	NM_000694.4 link	c.1324C>T	p.Arg442Cys	missense_variant	Exon 10 of 10	ENST00000342456.11	NP_000685.1	P43353-1A0A024R5D8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALDH3B1	ENST00000342456.11 link	c.1324C>T	p.Arg442Cys	missense_variant	Exon 10 of 10	1	NM_000694.4	ENSP00000473990.2		P43353-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.0000464

AC:

AN:

150756

Hom.:

AF XY:

0.0000371

AC XY:

AN XY:

80876

show subpopulations

Gnomad AFR exome

AF:

0.000252

Gnomad AMR exome

AF:

0.0000400

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000436

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000503

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000308

AC:

AN:

1398202

Hom.:

Cov.:

AF XY:

0.0000246

AC XY:

AN XY:

690314

show subpopulations

Gnomad4 AFR exome

AF:

0.000157

Gnomad4 AMR exome

AF:

0.0000832

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000278

Gnomad4 SAS exome

AF:

0.0000252

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000277

Gnomad4 OTH exome

AF:

0.0000344

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000965

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:

0.0000648

Hom.:

Bravo

AF:

0.0000529

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000236

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 12, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1324C>T (p.R442C) alteration is located in exon 10 (coding exon 9) of the ALDH3B1 gene. This alteration results from a C to T substitution at nucleotide position 1324, causing the arginine (R) at amino acid position 442 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Benign

0.81

DEOGEN2

Benign

0.36

T;T;.;T

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.94

.;D;D;D

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.39

T;T;T;T

PrimateAI

Uncertain

0.63

Sift4G

Pathogenic

0.0

D;D;D;D

Polyphen

1.0

D;D;D;.

Vest4

0.46

MVP

0.70

GERP RS

3.2

Varity_R

0.17

gMVP

0.86

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