chr19-1912487-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_138422.4(ADAT3):c.440G>A(p.Arg147Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000134 in 1,498,814 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. R147R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00011 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00014 ( 1 hom. )

Consequence

ADAT3
NM_138422.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 2.32

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: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013361424).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADAT3	NM_138422.4 link	c.440G>A	p.Arg147Gln	missense_variant	Exon 2 of 2	ENST00000329478.4	NP_612431.2	Q96EY9D6W601
SCAMP4	NM_079834.4 link	c.-41-2492G>A		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.440G>A	p.Arg147Gln	missense_variant	Exon 2 of 2	1	NM_138422.4	ENSP00000332448.2		D6W601
SCAMP4	ENST00000316097.13 link	c.-41-2492G>A		intron_variant	Intron 1 of 6	1	NM_079834.4	ENSP00000316007.7		Q969E2-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152034

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:

0.000193

Gnomad SAS

AF:

0.00227

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000398

AC:

AN:

95412

AF XY:

0.000578

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:

0.0000278

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000137

AC:

184

AN:

1346672

Hom.:

Cov.:

AF XY:

0.000199

AC XY:

132

AN XY:

664194

show subpopulations

Gnomad4 AFR exome

AF:

0.00

AC:

AN:

27346

Gnomad4 AMR exome

AF:

0.00

AC:

AN:

30814

Gnomad4 ASJ exome

AF:

0.00

AC:

AN:

23586

Gnomad4 EAS exome

AF:

0.00

AC:

AN:

31766

Gnomad4 SAS exome

AF:

0.00206

AC:

155

AN:

75380

Gnomad4 FIN exome

AF:

0.00

AC:

AN:

33194

Gnomad4 NFE exome

AF:

0.0000244

AC:

AN:

1063448

Gnomad4 Remaining exome

AF:

0.0000536

AC:

AN:

55976

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Exome Het

Exome Hom

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:

0.000112

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.00

AC:

AN:

Gnomad4 AMR

AF:

0.00

AC:

AN:

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.000194

AC:

0.000193723

AN:

0.000193723

Gnomad4 SAS

AF:

0.00228

AC:

0.00227649

AN:

0.00227649

Gnomad4 FIN

AF:

0.00

AC:

AN:

Gnomad4 NFE

AF:

0.0000589

AC:

0.0000588633

AN:

0.0000588633

Gnomad4 OTH

AF:

0.00

AC:

AN:

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Genome 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

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.000381

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 09, 2016

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Sep 20, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Intellectual disability-strabismus syndrome

Uncertain:1

Mar 26, 2021

Revvity Omics, Revvity

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

May 20, 2024

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.32

CADD

Benign

DANN

Uncertain

0.99

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.84

M_CAP

Uncertain

0.096

MetaRNN

Benign

0.013

MetaSVM

Benign

-0.94

PrimateAI

Uncertain

0.63

REVEL

Benign

0.10

Sift4G

Benign

0.31

Vest4

0.26

MVP

0.49

MPC

0.70

ClinPred

0.064

GERP RS

2.3

gMVP

0.46

Mutation Taster

=93/7

polymorphism

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