9-463686-A-G

Position:

chr9-463686-A-G

Variant summary

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

The NM_203447.4(DOCK8):c.6238A>G(p.Arg2080Gly) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000211 in 1,613,774 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

DOCK8
NM_203447.4 missense, splice_region

Scores

Splicing: ADA: 0.5070

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.09

Variant links:

Genes affected

DOCK8 (HGNC:19191): (dedicator of cytokinesis 8) This gene encodes a member of the DOCK180 family of guanine nucleotide exchange factors. Guanine nucleotide exchange factors interact with Rho GTPases and are components of intracellular signaling networks. Mutations in this gene result in the autosomal recessive form of the hyper-IgE syndrome. Alternatively spliced transcript variants encoding different isoforms have been described.[provided by RefSeq, Jun 2010]

DOCK8 links:

DOCK8-AS2 (HGNC:55822): (DOCK8 antisense RNA 2)

DOCK8-AS2 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
DOCK8	NM_203447.4 linkuse as main transcript	c.6238A>G	p.Arg2080Gly	missense_variant, splice_region_variant	47/48	ENST00000432829.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DOCK8	ENST00000432829.7 linkuse as main transcript	c.6238A>G	p.Arg2080Gly	missense_variant, splice_region_variant	47/48	1	NM_203447.4		Q8NF50-1
DOCK8-AS2	ENST00000415004.6 linkuse as main transcript	n.276-6983T>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152182

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000324

AC:

AN:

246914

Hom.:

AF XY:

0.0000448

AC XY:

AN XY:

133840

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:

0.000262

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000226

AC:

AN:

1461474

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

727004

show subpopulations

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:

0.000371

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74464

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Combined immunodeficiency due to DOCK8 deficiency

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 09, 2022

This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 2080 of the DOCK8 protein (p.Arg2080Gly). This variant is present in population databases (rs545187374, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with DOCK8-related conditions. ClinVar contains an entry for this variant (Variation ID: 576090). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.30

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.43

T;.;.;T

Eigen

Benign

0.044

Eigen_PC

Benign

0.11

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.82

T;T;T;T

M_CAP

Benign

0.041

MetaRNN

Uncertain

0.44

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.3

M;.;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-3.5

.;.;D;D

REVEL

Benign

0.20

Sift

Pathogenic

0.0

.;.;D;D

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

0.57

P;.;.;P

Vest4

0.85

MutPred

0.47

Loss of stability (P = 0.0376);.;.;.;

MVP

0.22

MPC

0.16

ClinPred

0.87

GERP RS

4.0

Varity_R

0.54

gMVP

0.72

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.51

dbscSNV1_RF

Benign

0.54

SpliceAI score (max)

0.030

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