rs770962486

chr1-62535596-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_001367561.1(DOCK7):c.3508A>G(p.Ile1170Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000178 in 1,461,642 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000018 (0 hom.)
• Consequence: DOCK7 NM_001367561.1 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 6.27

Genes affected

DOCK7 (HGNC:19190): (dedicator of cytokinesis 7) The protein encoded by this gene is a guanine nucleotide exchange factor (GEF) that plays a role in axon formation and neuronal polarization. The encoded protein displays GEF activity toward RAC1 and RAC3 Rho small GTPases but not toward CDC42. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, DOCK7
• BP4: Computational evidence support a benign effect (MetaRNN=0.13291025).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DOCK7	NM_001367561.1	c.3508A>G	p.Ile1170Val	missense_variant	29/50	ENST00000635253.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DOCK7	ENST00000635253.2	c.3508A>G	p.Ile1170Val	missense_variant	29/50	5	NM_001367561.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000797 AC: 2 AN: 250882 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135598

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000579

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000178 AC: 26 AN: 1461642 Hom.: 0 Cov.: 31 AF XY: 0.0000165 AC XY: 12 AN XY: 727114

Gnomad4 AFR exome AF: 0.000358

Gnomad4 AMR exome AF: 0.0000447

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.0000994

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000756

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Developmental and epileptic encephalopathy, 23 Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Apr 11, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Oct 14, 2022	This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 1170 of the DOCK7 protein (p.Ile1170Val). This variant is present in population databases (rs770962486, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with DOCK7-related conditions. ClinVar contains an entry for this variant (Variation ID: 475138). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DOCK7 protein function. 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. -

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 26, 2022

The c.3415A>G (p.I1139V) alteration is located in exon 28 (coding exon 28) of the DOCK7 gene. This alteration results from a A to G substitution at nucleotide position 3415, causing the isoleucine (I) at amino acid position 1139 to be replaced by a valine (V). 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	0.15
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.48
Cadd	Benign	23
Dann	Benign	0.96
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.00059
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.91	D;D;D;D;D;D;D
M_CAP	Benign	0.0069	T
MetaRNN	Benign	0.13	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.27	N;N;.;.;.;.;N
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	0.11	N;.;N;.;.;.;.
REVEL	Benign	0.068
Sift	Benign	0.48	T;.;T;.;.;.;.
Sift4G	Benign	0.98	T;T;T;.;T;T;T
Polyphen		0.0	B;B;B;.;B;B;.
Vest4		0.46
MutPred		0.42		Gain of methylation at K1169 (P = 0.0547);Gain of methylation at K1169 (P = 0.0547);.;.;.;.;Gain of methylation at K1169 (P = 0.0547);
MVP		0.25
MPC		0.32
ClinPred		0.46	T
GERP RS		5.0
Varity_R		0.19
gMVP		0.16

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

Other links and lift over

dbSNP: rs770962486; hg19: chr1-63001267;