chr18-9117903-GGTAA-G

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PM2PP3PP5_Very_Strong

The NM_021074.5(NDUFV2):c.120+5_120+8delGTAA variant causes a splice region, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000568 in 1,583,346 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000056 ( 0 hom. )

Consequence

NDUFV2
NM_021074.5 splice_region, intron

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: 7.71

Publications

0 publications found

Variant links:

Genes affected

NDUFV2 (HGNC:7717): (NADH:ubiquinone oxidoreductase core subunit V2) The NADH-ubiquinone oxidoreductase complex (complex I) of the mitochondrial respiratory chain catalyzes the transfer of electrons from NADH to ubiquinone, and consists of at least 43 subunits. The complex is located in the inner mitochondrial membrane. This gene encodes the 24 kDa subunit of complex I, and is involved in electron transfer. Mutations in this gene are implicated in Parkinson's disease, bipolar disorder, schizophrenia, and have been found in one case of early onset hypertrophic cardiomyopathy and encephalopathy. A non-transcribed pseudogene of this locus is found on chromosome 19. [provided by RefSeq, Oct 2009]

NDUFV2 Gene-Disease associations (from GenCC):

mitochondrial disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
mitochondrial complex I deficiency, nuclear type 7
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
Leigh syndrome with leukodystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
mitochondrial complex I deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Leigh syndrome
Inheritance: AR Classification: LIMITED Submitted by: ClinGen

NDUFV2 links:

ENSG00000265257 (HGNC:):

ENSG00000265257 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 11 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

PP5

Variant 18-9117903-GGTAA-G is Pathogenic according to our data. Variant chr18-9117903-GGTAA-G is described in ClinVar as Pathogenic. ClinVar VariationId is 279920.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021074.5. 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
	NDUFV2	NM_021074.5	MANE Select	c.120+5_120+8delGTAA		splice_region intron	N/A	NP_066552.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
NDUFV2	ENST00000318388.11	TSL:1 MANE Select	c.120+1_120+4delGTAA	splice_donor splice_region intron	N/A	ENSP00000327268.6
NDUFV2	ENST00000400033.1	TSL:3	c.129+1_129+4delGTAA	splice_donor splice_region intron	N/A	ENSP00000382908.1
NDUFV2	ENST00000474350.5	TSL:3	n.517+1_517+4delGTAA	splice_donor splice_region intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152046

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251128

AF XY:

0.00

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000559

AC:

AN:

1431300

Hom.:

AF XY:

0.00000700

AC XY:

AN XY:

714236

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32898

American (AMR)

AF:

0.0000224

AC:

AN:

44676

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25920

East Asian (EAS)

AF:

0.00

AC:

AN:

39454

South Asian (SAS)

AF:

0.0000234

AC:

AN:

85502

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53374

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5716

European-Non Finnish (NFE)

AF:

0.00000369

AC:

AN:

1084354

Other (OTH)

AF:

0.0000168

AC:

AN:

59406

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.431

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:

0.00000658

AC:

AN:

152046

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74268

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41386

American (AMR)

AF:

0.00

AC:

AN:

15266

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67994

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.675

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Mitochondrial complex I deficiency, nuclear type 7

Pathogenic:4

Mar 29, 2022

Revvity Omics, Revvity

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Feb 01, 2024

Neuberg Centre For Genomic Medicine, NCGM

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The splice donor c.120+5_120+8del variant in NDUFV2 gene has been reported previously in individual(s) affected with NDUFV2- related disorders (Bénit et al., 2003). Functional studies indicate that c.120+5_120+8delGTAA causes a significant reduction in the mitochondrial targeting ability of the NDUFV2 protein (Liu et al., 2011).

Jun 01, 2003

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

Oct 14, 2024

Department of Pediatrics, Government Thiruvarur Medical College and Hospital

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The splice donor c.120+5_120+8del variant in NDUFV2 gene has been reported previously in individual(s) affected with NDUFV2 related disorders (Bénit et al., 2003) as hypertropic cardiomyopathy and encephalopathy.This is the first reported case from INDIA with NDUFV2 gene mutation and the second case of NDUFV2:c.120+5_120+8del mutation presenting without cardiomyopathy.

not provided

Pathogenic:1

May 25, 2022

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Published functional studies indicate that c.120+5_120+8delGTAA causes a significant reduction in the mitochondrial targeting ability of the NDUFV2 protein (Liu et al., 2011); Not observed at a significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 29554876, 11220739, 12754703, 26008862, 27126960, 30831263, 21548921)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

7.7

Mutation Taster

=11/89

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.45

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.45

Position offset: 0

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over