Variant 9-137323853-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_017820.5(EXD3):c.2056C>T(p.Arg686Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000627 in 1,610,026 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R686P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000067 ( 0 hom. )

Consequence

EXD3
NM_017820.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.52

Variant links:

Genes affected

EXD3 (HGNC:26023): (exonuclease 3'-5' domain containing 3) Predicted to enable 3'-5' exonuclease activity. Predicted to be involved in nucleic acid phosphodiester bond hydrolysis. [provided by Alliance of Genome Resources, Apr 2022]

EXD3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EXD3	NM_017820.5 linkuse as main transcript	c.2056C>T	p.Arg686Trp	missense_variant	19/22	ENST00000340951.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EXD3	ENST00000340951.9 linkuse as main transcript	c.2056C>T	p.Arg686Trp	missense_variant	19/22	1	NM_017820.5	P1	Q8N9H8-1
EXD3	ENST00000491734.6 linkuse as main transcript	c.*1163C>T		3_prime_UTR_variant, NMD_transcript_variant	13/15	1
EXD3	ENST00000487745.5 linkuse as main transcript	n.1384C>T		non_coding_transcript_exon_variant	9/12	2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152200

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000208

AC:

AN:

240332

Hom.:

AF XY:

0.0000228

AC XY:

AN XY:

131808

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 SAS exome

AF:

0.0000330

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000373

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000665

AC:

AN:

1457826

Hom.:

Cov.:

AF XY:

0.0000689

AC XY:

AN XY:

725172

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000581

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000720

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000283

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000240

AC:

ExAC

AF:

0.0000334

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 11, 2023

The c.2056C>T (p.R686W) alteration is located in exon 19 (coding exon 18) of the EXD3 gene. This alteration results from a C to T substitution at nucleotide position 2056, causing the arginine (R) at amino acid position 686 to be replaced by a tryptophan (W). 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

Benign

0.17

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

Eigen

Benign

0.059

Eigen_PC

Benign

-0.17

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.83

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.67

MetaSVM

Benign

-0.58

MutationAssessor

Pathogenic

3.0

MutationTaster

Benign

0.99

N;N

PrimateAI

Benign

0.46

PROVEAN

Pathogenic

-5.1

REVEL

Uncertain

0.32

Sift

Uncertain

0.0030

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.53

MVP

0.54

MPC

0.35

ClinPred

0.94

GERP RS

-0.12

Varity_R

0.26

gMVP

0.66

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

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