rs886039245

Variant names:

• chr22-31760703-G-A
• rs886039245
• NM_001242896.3:c.193+1G>A

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001242896.3(DEPDC5):​c.193+1G>A variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,616 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: DEPDC5 NM_001242896.3 splice_donor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic criteria provided, single submitter P:1 O:1
• Conservation: PhyloP100: 8.24
• Publications: 4 publications found

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

ENSG00000285404 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 22-31760703-G-A is Pathogenic according to our data. Variant chr22-31760703-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 264714.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001242896.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DEPDC5	NM_001242896.3	MANE Select	c.193+1G>A		splice_donor intron	N/A	NP_001229825.1
	DEPDC5	NM_001364318.2		c.193+1G>A		splice_donor intron	N/A	NP_001351247.1
	DEPDC5	NM_001136029.4		c.193+1G>A		splice_donor intron	N/A	NP_001129501.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DEPDC5	ENST00000651528.2	MANE Select	c.193+1G>A		splice_donor intron	N/A	ENSP00000498382.1
	DEPDC5	ENST00000382112.8	TSL:1	c.193+1G>A		splice_donor intron	N/A	ENSP00000371546.4
	DEPDC5	ENST00000433147.2	TSL:1	c.193+1G>A		splice_donor intron	N/A	ENSP00000410544.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1456616 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 724630

African (AFR) AF: 0.00 AC: 0 AN: 33202

American (AMR) AF: 0.00 AC: 0 AN: 43664

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26026

East Asian (EAS) AF: 0.00 AC: 0 AN: 39636

South Asian (SAS) AF: 0.00 AC: 0 AN: 85092

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53390

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5746

European-Non Finnish (NFE) AF: 9.01e-7 AC: 1 AN: 1109636

Other (OTH) AF: 0.00 AC: 0 AN: 60224

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Familial focal epilepsy with variable foci (1)
-	-	-	Epilepsy, familial focal, with variable foci 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.38
CADD	Pathogenic	32
DANN	Uncertain	0.99
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.94
FATHMM_MKL	Pathogenic	0.99	D
PhyloP100		8.2
GERP RS		4.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.9
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.93
SpliceAI score (max)		1.0		Details are displayed if max score is > 0.2
DS_DL_spliceai		1.0		Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs886039245; hg19: chr22-32156689;