Genetic Variant DUSP18:p.Ala7Ser (chr22-30663985-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_152511.5(DUSP18):c.19G>T(p.Ala7Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000558 in 1,613,266 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

DUSP18
NM_152511.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0770

Variant links:

Genes affected

DUSP18 (HGNC:18484): (dual specificity phosphatase 18) Dual-specificity phosphatases (DUSPs) constitute a large heterogeneous subgroup of the type I cysteine-based protein-tyrosine phosphatase superfamily. DUSPs are characterized by their ability to dephosphorylate both tyrosine and serine/threonine residues. They have been implicated as major modulators of critical signaling pathways. DUSP18 contains the consensus DUSP C-terminal catalytic domain but lacks the N-terminal CH2 domain found in the MKP (mitogen-activated protein kinase phosphatase) class of DUSPs (see MIM 600714) (summary by Patterson et al., 2009 [PubMed 19228121]).[supplied by OMIM, Dec 2009]

DUSP18 links:

SLC35E4 (HGNC:17058): (solute carrier family 35 member E4) Predicted to enable antiporter activity. Predicted to be involved in transmembrane transport. Predicted to be integral component of membrane. Predicted to be active in Golgi apparatus. [provided by Alliance of Genome Resources, Apr 2022]

SLC35E4 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.051384896).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DUSP18	NM_152511.5 link	c.19G>T	p.Ala7Ser	missense_variant	Exon 2 of 2	ENST00000334679.4	NP_689724.3	Q8NEJ0A0A024R1L2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DUSP18	ENST00000334679.4 link	c.19G>T	p.Ala7Ser	missense_variant	Exon 2 of 2	1	NM_152511.5	ENSP00000333917.3		Q8NEJ0

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152184

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

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1461082

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726702

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74360

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 24, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.19G>T (p.A7S) alteration is located in exon 2 (coding exon 1) of the DUSP18 gene. This alteration results from a G to T substitution at nucleotide position 19, causing the alanine (A) at amino acid position 7 to be replaced by a serine (S). 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

0.073

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.70

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.020

T;T;.;T;.;.

Eigen

Benign

-0.91

Eigen_PC

Benign

-0.82

FATHMM_MKL

Benign

0.35

LIST_S2

Benign

0.55

.;.;T;T;T;.

M_CAP

Benign

0.0043

MetaRNN

Benign

0.051

T;T;T;T;T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

0.97

L;L;.;L;.;.

PrimateAI

Benign

0.38

PROVEAN

Benign

0.010

N;N;N;N;N;D

REVEL

Benign

0.031

Sift

Benign

0.49

T;T;T;T;T;.

Sift4G

Benign

0.67

T;T;T;T;T;.

Polyphen

0.0010

B;B;.;B;.;.

Vest4

0.099

MutPred

0.33

Gain of disorder (P = 0.0093);Gain of disorder (P = 0.0093);Gain of disorder (P = 0.0093);Gain of disorder (P = 0.0093);Gain of disorder (P = 0.0093);Gain of disorder (P = 0.0093);

MVP

0.15

MPC

0.038

ClinPred

0.056

GERP RS

1.6

Varity_R

0.035

gMVP

0.12

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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