chr12-4654857-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_005002.5(NDUFA9):c.253C>T(p.Arg85Trp) variant causes a missense change. The variant allele was found at a frequency of 0.000408 in 1,613,792 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00042 ( 0 hom. )

Consequence

NDUFA9
NM_005002.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:8

Conservation

PhyloP100: 5.90

Publications

4 publications found

Variant links:

Genes affected

NDUFA9 (HGNC:7693): (NADH:ubiquinone oxidoreductase subunit A9) The encoded protein is a subunit of the hydrophobic protein fraction of the NADH:ubiquinone oxidoreductase (complex I), the first enzyme complex in the electron transport chain located in the inner mitochondrial membrane. A pseudogene has been identified on chromosome 12. [provided by RefSeq, May 2010]

NDUFA9 Gene-Disease associations (from GenCC):

Leigh syndrome
Inheritance: AR Classification: MODERATE, LIMITED Submitted by: ClinGen, G2P
Leigh syndrome with leukodystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
mitochondrial complex I deficiency, nuclear type 26
Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

NDUFA9 links:

ENSG00000255639 (HGNC:):

ENSG00000255639 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.932

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NDUFA9	NM_005002.5 link	c.253C>T	p.Arg85Trp	missense_variant	Exon 3 of 11	ENST00000266544.10	NP_004993.1	Q16795

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
NDUFA9	ENST00000266544.10 link	c.253C>T	p.Arg85Trp	missense_variant	Exon 3 of 11	1	NM_005002.5	ENSP00000266544.5	Q16795
ENSG00000255639	ENST00000648836.1 link	c.253C>T	p.Arg85Trp	missense_variant	Exon 3 of 15			ENSP00000497305.1	A0A3B3ISG8
ENSG00000272921	ENST00000536588.1 link	n.*253C>T		non_coding_transcript_exon_variant	Exon 4 of 7	3		ENSP00000445121.1	H0YGX0
ENSG00000272921	ENST00000536588.1 link	n.*253C>T		3_prime_UTR_variant	Exon 4 of 7	3		ENSP00000445121.1	H0YGX0

Frequencies

GnomAD3 genomes

AF:

0.000269

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

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:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000470

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000263

AC:

AN:

251112

AF XY:

0.000273

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000203

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000467

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000423

AC:

618

AN:

1461528

Hom.:

Cov.:

AF XY:

0.000419

AC XY:

305

AN XY:

727072

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

33458

American (AMR)

AF:

0.000224

AC:

AN:

44682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39696

South Asian (SAS)

AF:

0.000209

AC:

AN:

86206

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.000511

AC:

568

AN:

1111808

Other (OTH)

AF:

0.000248

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

117

146

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

110

<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:

0.000263

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74450

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41552

American (AMR)

AF:

0.0000654

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.0000943

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000456

AC:

AN:

68024

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.524

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:

0.000471

Hom.:

Bravo

AF:

0.000246

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000222

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000818

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:4

Sep 28, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

NDUFA9: PM2 -

Oct 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 85 of the NDUFA9 protein (p.Arg85Trp). This variant is present in population databases (rs71579253, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with NDUFA9-related conditions. ClinVar contains an entry for this variant (Variation ID: 214723). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

Jun 27, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function -

not specified

Uncertain:1

Sep 30, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: NDUFA9 c.253C>T (p.Arg85Trp) results in a non-conservative amino acid change located in the NAD-dependent epimerase/dehydratase (IPR001509) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00026 in 251112 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in NDUFA9 causing Mitochondrial Complex 1 Deficiency, Nuclear Type 26, allowing no conclusion about variant significance. To our knowledge, no occurrence of c.253C>T in individuals affected with Mitochondrial Complex 1 Deficiency, Nuclear Type 26 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 214723). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Leigh syndrome

Uncertain:1

Aug 23, 2018

Baylor Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Inborn genetic diseases

Uncertain:1

May 27, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.253C>T (p.R85W) alteration is located in exon 3 (coding exon 3) of the NDUFA9 gene. This alteration results from a C to T substitution at nucleotide position 253, causing the arginine (R) at amino acid position 85 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Mitochondrial complex I deficiency, nuclear type 26

Uncertain:1

Jun 09, 2022

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.60

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.52

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.64

D;D;.

Eigen

Pathogenic

0.92

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Benign

0.044

MetaRNN

Pathogenic

0.93

D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.3

H;.;.

PhyloP100

5.9

PrimateAI

Uncertain

0.55

PROVEAN

Pathogenic

-7.7

D;D;.

REVEL

Pathogenic

0.85

Sift

Pathogenic

0.0

D;D;.

Sift4G

Pathogenic

0.0

D;D;.

Polyphen

1.0

D;.;.

Vest4

0.99

MVP

0.97

MPC

0.50

ClinPred

0.99

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.85

gMVP

0.94

Mutation Taster

=4/96

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