1-62544978-G-T

Position:

• chr1-62544978-G-T

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.2828C>A​(p.Ser943Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00000143 in 1,397,508 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S943F) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DOCK7 NM_001367561.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.27

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]

DOCK7 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), DOCK7. . Gene score misZ 3.4194 (greater than the threshold 3.09). Trascript score misZ 3.8677 (greater than threshold 3.09). GenCC has associacion of gene with developmental and epileptic encephalopathy, 23, developmental and epileptic encephalopathy.
• BP4: Computational evidence support a benign effect (MetaRNN=0.18682402).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DOCK7	NM_001367561.1	c.2828C>A	p.Ser943Tyr	missense_variant	23/50	ENST00000635253.2	NP_001354490.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DOCK7	ENST00000635253.2	c.2828C>A	p.Ser943Tyr	missense_variant	23/50	5	NM_001367561.1	ENSP00000489124.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000134 AC: 2 AN: 148914 Hom.: 0 AF XY: 0.0000249 AC XY: 2 AN XY: 80208

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000816

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: 0.00000143 AC: 2 AN: 1397508 Hom.: 0 Cov.: 30 AF XY: 0.00000290 AC XY: 2 AN XY: 689256

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000560

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: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Developmental and epileptic encephalopathy, 23 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 06, 2020

The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the ExAC database. This sequence change replaces serine with tyrosine at codon 943 of the DOCK7 protein (p.Ser943Tyr). The serine residue is weakly conserved and there is a large physicochemical difference between serine and tyrosine. This variant has not been reported in the literature in individuals with DOCK7-related conditions. 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. 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: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.41
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.014	.;.;T;T;T
Eigen	Benign	0.15
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.88	D;D;D;D;D
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.19	T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N;N;.;N;.
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-0.81	N;.;.;.;.
REVEL	Benign	0.055
Sift	Uncertain	0.014	D;.;.;.;.
Sift4G	Benign	0.097	T;T;.;T;.
Polyphen		0.045	B;B;.;.;.
Vest4		0.38
MutPred		0.23		Loss of glycosylation at S943 (P = 0.0102);Loss of glycosylation at S943 (P = 0.0102);.;Loss of glycosylation at S943 (P = 0.0102);.;
MVP		0.43
ClinPred		0.13	T
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6
Varity_R		0.25
gMVP		0.68

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: rs61742951; hg19: chr1-63010649;