rs780960812

Positions:

chr22-31821540-C-T

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_001242896.3(DEPDC5):c.1909C>T(p.Arg637*) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000589 in 1,614,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

DEPDC5
NM_001242896.3 stop_gained

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:1O:1

Conservation

PhyloP100: 6.08

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 links:

ENSG00000285404 (HGNC:):

ENSG00000285404 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 22-31821540-C-T is Pathogenic according to our data. Variant chr22-31821540-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 264735.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=2, not_provided=1, Likely_pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DEPDC5	NM_001242896.3 link	c.1909C>T	p.Arg637*	stop_gained	23/43	ENST00000651528.2	NP_001229825.1	O75140-10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DEPDC5	ENST00000651528.2 link	c.1909C>T	p.Arg637*	stop_gained	23/43		NM_001242896.3	ENSP00000498382.1		O75140-10
ENSG00000285404	ENST00000646701.1 link	c.1786+2315C>T		intron_variant				ENSP00000496158.1		A0A2R8YF50

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000161

AC:

AN:

248962

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135130

show subpopulations

Gnomad AFR exome

AF:

0.0000646

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000616

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000764

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74318

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000189

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.00000827

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:4Uncertain:1Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1Uncertain:1

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Oct 08, 2021	Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Reported in the heterozygous state in one individual with nocturnal frontal lobe epilepsy (Ricos et al., 2016); This variant is associated with the following publications: (PMID: 27683934, 30093711, 26505888) -
Likely pathogenic, criteria provided, single submitter	clinical testing	Greenwood Genetic Center Diagnostic Laboratories, Greenwood Genetic Center	Dec 14, 2020	PVS1, PM2 -

Inborn genetic diseases

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 11, 2021

The c.1909C>T (p.R637*) alteration, located in exon 23 (coding exon 22) of the DEPDC5 gene, consists of a C to T substitution at nucleotide position 1909. This changes the amino acid from an arginine (R) to a stop codon at amino acid position 637. This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. This alteration has been reported in the heterozygous state in one individual with nocturnal frontal lobe epilepsy (Ricos, 2016). Based on the available evidence, this alteration is classified as pathogenic. -

Familial focal epilepsy with variable foci

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 11, 2022

For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 264735). This premature translational stop signal has been observed in individual(s) with nocturnal frontal lobe epilepsy (PMID: 26505888). This variant is present in population databases (rs780960812, gnomAD 0.004%). This sequence change creates a premature translational stop signal (p.Arg637*) in the DEPDC5 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in DEPDC5 are known to be pathogenic (PMID: 23542697, 23542701). -

DEPDC5-related disorder

Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 10, 2024

The DEPDC5 c.1909C>T variant is predicted to result in premature protein termination (p.Arg637*). This variant has been reported in an individual with frontal lobe epilepsy (Ricos et al. 2016. PubMed ID: 26505888). This variant is reported in 0.0041% of alleles in individuals of African descent in gnomAD. This variant has been classified as pathogenic by multiple independent submitters to the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/264735/). Nonsense variants in DEPDC5 are expected to be pathogenic and therefore we interpret c.1909C>T (p.Arg637*) as likely pathogenic. -

Epilepsy, familial focal, with variable foci 1

Other:1

not provided, no classification provided

literature only

GeneReviews

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.50

BayesDel_noAF

Pathogenic

0.65

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.92

FATHMM_MKL

Pathogenic

0.98

Vest4

0.94, 0.95, 0.94, 0.95, 0.95

ClinPred

0.99

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

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