chr11-1556765-C-T

Position:

• chr11-1556765-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_004420.3(DUSP8):​c.1631G>A​(p.Arg544Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000287 in 1,045,918 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: not found (cov: 32)
  • Exomes 𝑓: 0.0000029 (0 hom.)
• Consequence: DUSP8 NM_004420.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0280

Genes affected

DUSP8 (HGNC:3074): (dual specificity phosphatase 8) The protein encoded by this gene is a member of the dual specificity protein phosphatase subfamily. These phosphatases inactivate their target kinases by dephosphorylating both the phosphoserine/threonine and phosphotyrosine residues. They negatively regulate members of the mitogen-activated protein (MAP) kinase superfamily (MAPK/ERK, SAPK/JNK, p38), which is associated with cellular proliferation and differentiation. Different members of the family of dual specificity phosphatases show distinct substrate specificities for various MAP kinases, different tissue distribution and subcellular localization, and different modes of inducibility of their expression by extracellular stimuli. This gene product inactivates SAPK/JNK and p38, is expressed predominantly in the adult brain, heart, and skeletal muscle, is localized in the cytoplasm, and is induced by nerve growth factor and insulin. An intronless pseudogene for DUSP8 is present on chromosome 10q11.2. [provided by RefSeq, Jul 2008]

ACMG classification

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=0.063212216).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DUSP8	NM_004420.3	c.1631G>A	p.Arg544Gln	missense_variant	7/7	ENST00000397374.8	NP_004411.2
DUSP8	XM_011519932.3	c.1631G>A	p.Arg544Gln	missense_variant	7/7		XP_011518234.1
DUSP8	XM_011519933.3	c.1631G>A	p.Arg544Gln	missense_variant	7/7		XP_011518235.1
DUSP8	XM_047426513.1	c.1589G>A	p.Arg530Gln	missense_variant	7/7		XP_047282469.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DUSP8	ENST00000397374.8	c.1631G>A	p.Arg544Gln	missense_variant	7/7	1	NM_004420.3	ENSP00000380530.3
DUSP8	ENST00000331588.4	c.1631G>A	p.Arg544Gln	missense_variant	6/6	1		ENSP00000329539.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000287 AC: 3 AN: 1045918 Hom.: 0 Cov.: 29 AF XY: 0.00000405 AC XY: 2 AN XY: 493740

Gnomad4 AFR exome AF: 0.00

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: 0.00000334

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 13, 2023

The c.1631G>A (p.R544Q) alteration is located in exon 7 (coding exon 6) of the DUSP8 gene. This alteration results from a G to A substitution at nucleotide position 1631, causing the arginine (R) at amino acid position 544 to be replaced by a glutamine (Q). 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	0.12
BayesDel_addAF	Benign	-0.38	T
BayesDel_noAF	Benign	-0.78
CADD	Benign	10
DANN	Benign	0.93
DEOGEN2	Benign	0.029	T;T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.059	N
M_CAP	Benign	0.054	D
MetaRNN	Benign	0.063	T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	1.7	L;L
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-0.37	N;N
REVEL	Benign	0.026
Sift	Benign	0.39	T;T
Sift4G	Benign	0.59	T;T
Polyphen		0.0090	B;B
Vest4		0.026
MutPred		0.30		Loss of methylation at R544 (P = 0.0068);Loss of methylation at R544 (P = 0.0068);
MVP		0.39
MPC		1.2
ClinPred		0.063	T
GERP RS		-0.44
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.031
gMVP		0.25

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

Other links and lift over

dbSNP: rs1178991975; hg19: chr11-1577995;