1-62586583-T-C

Variant names:

• chr1-62586583-T-C
• rs147324128
• NM_001367561.1:c.1724A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001367561.1(DOCK7):​c.1724A>G​(p.Asn575Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000992 in 1,612,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 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. N575I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: DOCK7 NM_001367561.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.10
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• genetic developmental and epileptic encephalopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• developmental and epileptic encephalopathy, 23

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10433212).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001367561.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOCK7	NM_001367561.1	MANE Select	c.1724A>G	p.Asn575Ser	missense	Exon 15 of 50	NP_001354490.1
	DOCK7	NM_001330614.2		c.1724A>G	p.Asn575Ser	missense	Exon 15 of 50	NP_001317543.1
	DOCK7	NM_001271999.2		c.1724A>G	p.Asn575Ser	missense	Exon 15 of 49	NP_001258928.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DOCK7	ENST00000635253.2	TSL:5 MANE Select	c.1724A>G	p.Asn575Ser	missense	Exon 15 of 50	ENSP00000489124.1
	DOCK7	ENST00000454575.6	TSL:1	c.1724A>G	p.Asn575Ser	missense	Exon 15 of 49	ENSP00000413583.2
	DOCK7	ENST00000251157.10	TSL:5	c.1724A>G	p.Asn575Ser	missense	Exon 15 of 50	ENSP00000251157.6

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152144 Hom.: 0 Cov.: 32

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: 0.0000147

Gnomad OTH AF: 0.000479

GnomAD2 exomes AF: 0.0000120 AC: 3 AN: 250948 AF XY: 0.0000221

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000890 AC: 13 AN: 1460740 Hom.: 0 Cov.: 30 AF XY: 0.0000110 AC XY: 8 AN XY: 726696

African (AFR) AF: 0.00 AC: 0 AN: 33442

American (AMR) AF: 0.0000224 AC: 1 AN: 44674

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26100

East Asian (EAS) AF: 0.00 AC: 0 AN: 39582

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86162

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000900 AC: 10 AN: 1111280

Other (OTH) AF: 0.00 AC: 0 AN: 60354

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152144 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74342

African (AFR) AF: 0.0000241 AC: 1 AN: 41444

American (AMR) AF: 0.00 AC: 0 AN: 15270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68010

Other (OTH) AF: 0.000479 AC: 1 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Developmental and epileptic encephalopathy, 23 Uncertain:1

May 12, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 575 of the DOCK7 protein (p.Asn575Ser). This variant is present in population databases (rs147324128, gnomAD 0.003%). 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: 1034439). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a 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 v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Benign	-0.35	T
BayesDel_noAF	Benign	-0.64
CADD	Uncertain	23
DANN	Benign	0.93
DEOGEN2	Benign	0.066	T
Eigen	Benign	-0.21
Eigen_PC	Benign	-0.012
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.10	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-0.44	N
PhyloP100		5.1
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.086
Sift	Benign	0.83	T
Sift4G	Benign	0.74	T
Polyphen		0.0050	B
Vest4		0.31
MVP		0.40
MPC		0.35
ClinPred		0.50	D
GERP RS		4.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.35
gMVP		0.45
Mutation Taster		=71/29	polymorphism

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

Other links and lift over

dbSNP: rs147324128; hg19: chr1-63052254;