dbSNP rs72547566: ALDH3A2:p.Arg228Gly (chr17-19657746-C-G) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP3_Moderate

The NM_000382.3(ALDH3A2):c.682C>G(p.Arg228Gly) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000689 in 1,451,914 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R228H) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

ALDH3A2
NM_000382.3 missense, splice_region

Scores

Splicing: ADA: 0.6968

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.87

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

Sjogren-Larsson syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Myriad Women’s Health, PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet

ALDH3A2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr17-19657747-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 653859.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.923

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000382.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ALDH3A2	NM_000382.3	MANE Select	c.682C>G	p.Arg228Gly	missense splice_region	Exon 5 of 10	NP_000373.1
ALDH3A2	NM_001031806.2		c.682C>G	p.Arg228Gly	missense splice_region	Exon 5 of 11	NP_001026976.1
ALDH3A2	NM_001369136.1		c.682C>G	p.Arg228Gly	missense splice_region	Exon 6 of 12	NP_001356065.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ALDH3A2	ENST00000176643.11	TSL:1 MANE Select	c.682C>G	p.Arg228Gly	missense splice_region	Exon 5 of 10	ENSP00000176643.6
ALDH3A2	ENST00000339618.8	TSL:1	c.682C>G	p.Arg228Gly	missense splice_region	Exon 5 of 11	ENSP00000345774.4
ALDH3A2	ENST00000476965.5	TSL:1	n.432C>G		splice_region non_coding_transcript_exon	Exon 2 of 7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.89e-7

AC:

AN:

1451914

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

722986

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33272

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26062

East Asian (EAS)

AF:

0.00

AC:

AN:

39626

South Asian (SAS)

AF:

0.00

AC:

AN:

86042

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53398

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5750

European-Non Finnish (NFE)

AF:

9.07e-7

AC:

AN:

1103022

Other (OTH)

AF:

0.00

AC:

AN:

60032

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.37

BayesDel_noAF

Pathogenic

0.29

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.72

Eigen

Pathogenic

0.91

Eigen_PC

Pathogenic

0.85

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.19

MetaRNN

Pathogenic

0.92

MetaSVM

Uncertain

0.49

MutationAssessor

Pathogenic

3.4

PhyloP100

7.9

PrimateAI

Benign

0.48

PROVEAN

Pathogenic

-6.8

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0030

Polyphen

1.0

Vest4

0.94

MutPred

0.73

Loss of stability (P = 0.0261)

MVP

0.97

MPC

0.98

ClinPred

1.0

GERP RS

5.3

Varity_R

0.97

gMVP

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.70

dbscSNV1_RF

Benign

0.50

SpliceAI score (max)

0.13

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over