Genetic Variant NM_000693.4:c.1477G>A (chr15-100914711-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM5PP2BP4

The NM_000693.4(ALDH1A3):c.1477G>A(p.Ala493Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,614,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 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. A493P) has been classified as Pathogenic.

Frequency

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

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

ALDH1A3
NM_000693.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.61

Publications

8 publications found

Variant links:

Genes affected

ALDH1A3 (HGNC:409): (aldehyde dehydrogenase 1 family member A3) This gene encodes an aldehyde dehydrogenase enzyme that uses retinal as a substrate. Mutations in this gene have been associated with microphthalmia, isolated 8, and expression changes have also been detected in tumor cells. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

ALDH1A3 links:

ALDH1A3-AS1 (HGNC:55416): (ALDH1A3 antisense RNA 1)

ALDH1A3-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM5

Other missense variant is known to change same aminoacid residue: Variant chr15-100914711-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 40204.Status of the report is no_assertion_criteria_provided, 0 stars.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 13 curated pathogenic missense variants (we use a threshold of 10). The gene has 4 curated benign missense variants. Gene score misZ: 2.2359 (below the threshold of 3.09). Trascript score misZ: 2.2507 (below the threshold of 3.09). GenCC associations: The gene is linked to isolated anophthalmia-microphthalmia syndrome, isolated microphthalmia 8.

BP4

Computational evidence support a benign effect (MetaRNN=0.36309606).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ALDH1A3	NM_000693.4 link	c.1477G>A	p.Ala493Thr	missense_variant	Exon 13 of 13	ENST00000329841.10	NP_000684.2	P47895A0A024RC95

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ALDH1A3	ENST00000329841.10 link	c.1477G>A	p.Ala493Thr	missense_variant	Exon 13 of 13	1	NM_000693.4	ENSP00000332256.5		P47895

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000796

AC:

AN:

251252

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461714

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727144

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86218

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53364

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111952

Other (OTH)

AF:

0.0000166

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.431

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41556

American (AMR)

AF:

0.00

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.29

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.65

D;T

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.070

MetaRNN

Benign

0.36

T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.8

L;.

PhyloP100

7.6

PrimateAI

Uncertain

0.67

PROVEAN

Uncertain

-2.4

N;N

REVEL

Uncertain

0.31

Sift

Uncertain

0.022

D;D

Sift4G

Uncertain

0.019

D;D

Polyphen

1.0

D;.

Vest4

0.42

MutPred

0.74

Loss of helix (P = 0.1299);.;

MVP

0.47

MPC

1.5

ClinPred

0.81

GERP RS

5.2

Varity_R

0.78

gMVP

0.94

Mutation Taster

=24/76

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over