Genetic Variant EXD1:p.Arg341Cys (chr15-41189972-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001286441.2(EXD1):c.1021C>T(p.Arg341Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000135 in 1,613,946 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 1 hom. )

Consequence

EXD1
NM_001286441.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.51

Variant links:

Genes affected

EXD1 (HGNC:28507): (exonuclease 3'-5' domain containing 1) Predicted to enable RNA binding activity and protein homodimerization activity. Predicted to be involved in gene silencing by RNA and piRNA metabolic process. Predicted to be located in P granule. Predicted to be part of PET complex. [provided by Alliance of Genome Resources, Apr 2022]

EXD1 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 rank	MANE	Protein	UniProt
EXD1	NM_001286441.2 link	c.1021C>T	p.Arg341Cys	missense_variant	Exon 11 of 12	ENST00000458580.7	NP_001273370.1	Q8NHP7-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
EXD1	ENST00000458580.7 link	c.1021C>T	p.Arg341Cys	missense_variant	Exon 11 of 12	2	NM_001286441.2	ENSP00000415056.2	Q8NHP7-3
EXD1	ENST00000314992.9 link	c.847C>T	p.Arg283Cys	missense_variant	Exon 9 of 10	1		ENSP00000321029.5	Q8NHP7-1
EXD1	ENST00000558881.1 link	n.399C>T		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152098

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:

0.000176

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000756

AC:

AN:

251468

Hom.:

AF XY:

0.0000662

AC XY:

AN XY:

135902

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000114

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000140

AC:

205

AN:

1461848

Hom.:

Cov.:

AF XY:

0.000136

AC XY:

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000162

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152098

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74284

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:

0.000176

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 12, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.847C>T (p.R283C) alteration is located in exon 9 (coding exon 9) of the EXD1 gene. This alteration results from a C to T substitution at nucleotide position 847, causing the arginine (R) at amino acid position 283 to be replaced by a cysteine (C). 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

Uncertain

0.50

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.24

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;.

Eigen

Benign

-0.099

Eigen_PC

Benign

-0.27

FATHMM_MKL

Benign

0.53

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.045

MetaRNN

Uncertain

0.62

D;D

MetaSVM

Benign

-0.78

MutationAssessor

Benign

1.8

L;.

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-3.0

D;D

REVEL

Benign

0.21

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

D;.

Vest4

0.71

MVP

0.46

MPC

0.25

ClinPred

0.31

GERP RS

2.0

Varity_R

0.16

gMVP

0.49

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