Genetic Variant ADAT3:p.Val47Ala (chr19-1912187-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_138422.4(ADAT3):c.140T>C(p.Val47Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000699 in 1,430,306 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. V47D) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

ADAT3
NM_138422.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.36

Publications

1 publications found

Variant links:

Genes affected

ADAT3 (HGNC:25151): (adenosine deaminase tRNA specific 3) This gene encodes a subunit of a tRNA-specific adenosine deaminase. This heterodimeric enzyme converts adenosine to inosine in the tRNA anticodon. A mutation in this gene causes a syndrome characterized by intellectual disability and strabismus. This gene shares its 5' exon with the overlapping gene, secretory carrier membrane protein 4 (Gene ID: 113178). [provided by RefSeq, Jul 2016]

ADAT3 links:

SCAMP4 (HGNC:30385): (secretory carrier membrane protein 4) Secretory carrier membrane proteins (SCAMPs) are widely distributed integral membrane proteins implicated in membrane trafficking. Most SCAMPs (e.g., SCAMP1; MIM 606911) have N-terminal cytoplasmic NPF (arg-pro-phe) repeats, 4 central transmembrane regions, and a short C-terminal cytoplasmic tail. These SCAMPs likely have a role in endocytosis that is mediated by their NPF repeats. Other SCAMPs, such as SCAMP4, lack the NPF repeats and are therefore unlikely to function in endocytosis (summary by Fernandez-Chacon and Sudhof, 2000 [PubMed 11050114]).[supplied by OMIM, Feb 2011]

SCAMP4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADAT3	NM_138422.4 link	c.140T>C	p.Val47Ala	missense_variant	Exon 2 of 2	ENST00000329478.4	NP_612431.2	Q96EY9D6W601
SCAMP4	NM_079834.4 link	c.-41-2792T>C		intron_variant	Intron 1 of 6	ENST00000316097.13	NP_524558.1	Q969E2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADAT3	ENST00000329478.4 link	c.140T>C	p.Val47Ala	missense_variant	Exon 2 of 2	1	NM_138422.4	ENSP00000332448.2		D6W601
SCAMP4	ENST00000316097.13 link	c.-41-2792T>C		intron_variant	Intron 1 of 6	1	NM_079834.4	ENSP00000316007.7		Q969E2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000530

AC:

AN:

188614

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000123

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.99e-7

AC:

AN:

1430306

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

709528

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32898

American (AMR)

AF:

0.00

AC:

AN:

40428

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25520

East Asian (EAS)

AF:

0.00

AC:

AN:

38432

South Asian (SAS)

AF:

0.00

AC:

AN:

82350

European-Finnish (FIN)

AF:

0.00

AC:

AN:

45202

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

9.09e-7

AC:

AN:

1100414

Other (OTH)

AF:

0.00

AC:

AN:

59330

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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 v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.016

BayesDel_noAF

Benign

-0.26

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.26

.;T

Eigen

Uncertain

0.28

Eigen_PC

Benign

0.19

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.65

T;T

M_CAP

Benign

0.051

MetaRNN

Uncertain

0.43

T;T

MetaSVM

Benign

-0.48

PhyloP100

4.4

PrimateAI

Uncertain

0.57

REVEL

Uncertain

0.34

Sift4G

Uncertain

0.0060

D;D

Vest4

0.51

MVP

0.54

MPC

1.0

ClinPred

0.86

GERP RS

4.8

gMVP

0.68

Mutation Taster

=71/29

polymorphism

(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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over