22-31797674-A-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP6BS2

The NM_001242896.3(DEPDC5):c.842A>T(p.Tyr281Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000384 in 1,613,886 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y281C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

DEPDC5
NM_001242896.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2O:1

Conservation

PhyloP100: 9.15

Publications

7 publications found

Variant links:

Genes affected

DEPDC5 (HGNC:18423): (DEP domain containing 5, GATOR1 subcomplex subunit) This gene encodes a member of the IML1 family of proteins involved in G-protein signaling pathways. The mechanistic target of rapamycin complex 1 (mTORC1) pathway regulates cell growth by sensing the availability of nutrients. The protein encoded by this gene is a component of the GATOR1 (GAP activity toward Rags) complex which inhibits the amino acid-sensing branch of the mTORC1 pathway. Mutations in this gene are associated with autosomal dominant familial focal epilepsy with variable foci. A single nucleotide polymorphism in an intron of this gene has been associated with an increased risk of hepatocellular carcinoma in individuals with chronic hepatitis C virus infection. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2014]

DEPDC5 Gene-Disease associations (from GenCC):

epilepsy, familial focal, with variable foci 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics, Illumina, G2P
focal epilepsy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal dominant epilepsy with auditory features
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autosomal dominant nocturnal frontal lobe epilepsy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial focal epilepsy with variable foci
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Brugada syndrome
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

DEPDC5 links:

ENSG00000285404 (HGNC:):

ENSG00000285404 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP6

Variant 22-31797674-A-T is Benign according to our data. Variant chr22-31797674-A-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 264753.

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DEPDC5	NM_001242896.3 link	c.842A>T	p.Tyr281Phe	missense_variant	Exon 13 of 43	ENST00000651528.2	NP_001229825.1	O75140-10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DEPDC5	ENST00000651528.2 link	c.842A>T	p.Tyr281Phe	missense_variant	Exon 13 of 43		NM_001242896.3	ENSP00000498382.1		O75140-10
ENSG00000285404	ENST00000646701.1 link	c.758A>T	p.Tyr253Phe	missense_variant	Exon 11 of 21			ENSP00000496158.1		A0A2R8YF50

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000281

AC:

AN:

249160

AF XY:

0.0000370

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000620

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000363

AC:

AN:

1461762

Hom.:

Cov.:

AF XY:

0.0000426

AC XY:

AN XY:

727186

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000450

AC:

AN:

1111904

Other (OTH)

AF:

0.0000331

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152124

Hom.:

Cov.:

AF XY:

0.0000808

AC XY:

AN XY:

74288

show subpopulations

African (AFR)

AF:

0.0000966

AC:

AN:

41424

American (AMR)

AF:

0.0000655

AC:

AN:

15258

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000564

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000414

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Jun 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

DEPDC5: BS3:Supporting -

Apr 13, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 27683934, 29359340, 30080265, 27066554, 30093711, 31639411) -

Inborn genetic diseases

Uncertain:1

Apr 17, 2017

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Y281F variant (also known as c.842A>T), located in coding exon 12 of the DEPDC5 gene, results from an A to T substitution at nucleotide position 842. The tyrosine at codon 281 is replaced by phenylalanine, an amino acid with highly similar properties. This variant has been reported in an individual with infantile spasms and focal cortical dysplasia on MRI; in addition, this variant was inherited from a father with unspecified epilepsy and also detected in a full sibling with multifocal epilepsy (Carvill GL et al. Neurol Genet, 2015 Aug;1:e17). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be benign and deleterious by PolyPhen and SIFT in silico analyses, respectively. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Familial focal epilepsy with variable foci

Uncertain:1

Sep 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces tyrosine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 281 of the DEPDC5 protein (p.Tyr281Phe). This variant is present in population databases (rs200797928, gnomAD 0.01%). This missense change has been observed in individuals with clinical features of DEPDC5-related conditions (PMID: 27066554; internal data). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 264753). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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. -

Epilepsy, familial focal, with variable foci 1

Other:1

GeneReviews

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.57

BayesDel_addAF

Benign

-0.064

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.51

.;.;.;.;.;.;.;.;D;.;.;.;.;.;.;D;.;.;.;.;.;.

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

D;D;D;D;D;D;D;D;D;D;.;.;D;D;.;.;D;D;.;D;D;D

M_CAP

Benign

0.018

MetaRNN

Uncertain

0.49

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.18

N;.;.;N;N;.;.;N;N;.;N;.;N;.;N;N;.;.;N;N;.;.

PhyloP100

9.1

PrimateAI

Pathogenic

0.85

PROVEAN

Uncertain

-3.5

D;.;.;.;.;.;.;.;D;.;D;.;.;.;D;D;.;.;D;D;.;.

REVEL

Uncertain

0.36

Sift

Uncertain

0.0010

D;.;.;.;.;.;.;.;D;.;D;.;.;.;T;D;.;.;D;D;.;.

Sift4G

Pathogenic

0.0010

D;.;.;.;.;.;.;.;D;.;D;.;.;.;T;D;.;.;D;D;.;.

Polyphen

0.14, 1.0

.;.;.;.;.;.;.;B;D;.;.;.;.;.;B;D;.;.;.;.;.;.

Vest4

0.65

MutPred

0.47

Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);.;Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);.;Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);.;Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);Loss of methylation at K276 (P = 0.0668);.;

MVP

0.42

MPC

1.2

ClinPred

0.66

GERP RS

5.0

Varity_R

0.44

Mutation Taster

=0/100

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over