NM_003850.3:c.1099G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_003850.3(SUCLA2):c.1099G>A(p.Asp367Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00545 in 1,613,104 control chromosomes in the GnomAD database, including 404 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D367Y) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0094 ( 66 hom., cov: 32)

Exomes 𝑓: 0.0050 ( 338 hom. )

Consequence

SUCLA2
NM_003850.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: 7.51

Publications

5 publications found

Variant links:

Genes affected

SUCLA2 (HGNC:11448): (succinate-CoA ligase ADP-forming subunit beta) Succinyl-CoA synthetase (SCS) is a mitochondrial matrix enzyme that acts as a heterodimer, being composed of an invariant alpha subunit and a substrate-specific beta subunit. The protein encoded by this gene is an ATP-specific SCS beta subunit that dimerizes with the SCS alpha subunit to form SCS-A, an essential component of the tricarboxylic acid cycle. SCS-A hydrolyzes ATP to convert succinate to succinyl-CoA. Defects in this gene are a cause of myopathic mitochondrial DNA depletion syndrome. A pseudogene of this gene has been found on chromosome 6. [provided by RefSeq, Jul 2008]

SUCLA2 Gene-Disease associations (from GenCC):

Leigh syndrome
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
mitochondrial DNA depletion syndrome, encephalomyopathic form with methylmalonic aciduria
Inheritance: Mitochondrial, AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)

SUCLA2 links:

ENSG00000287456 (HGNC:):

ENSG00000287456 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004880607).

BP6

Variant 13-47954148-C-T is Benign according to our data. Variant chr13-47954148-C-T is described in ClinVar as Benign. ClinVar VariationId is 139362.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.0668 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003850.3. 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
	SUCLA2	NM_003850.3	MANE Select	c.1099G>A	p.Asp367Asn	missense	Exon 8 of 11	NP_003841.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SUCLA2	ENST00000646932.1	MANE Select	c.1099G>A	p.Asp367Asn	missense	Exon 8 of 11	ENSP00000494360.1
SUCLA2	ENST00000643023.1		c.1162G>A	p.Asp388Asn	missense	Exon 9 of 12	ENSP00000495664.1
SUCLA2	ENST00000642944.1		c.925G>A	p.Asp309Asn	missense	Exon 8 of 11	ENSP00000495674.1

Frequencies

GnomAD3 genomes

AF:

0.00936

AC:

1422

AN:

151948

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00237

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0695

Gnomad ASJ

AF:

0.000577

Gnomad EAS

AF:

0.0427

Gnomad SAS

AF:

0.00208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00669

GnomAD2 exomes

AF:

0.0170

AC:

4253

AN:

250876

AF XY:

0.0131

show subpopulations

Gnomad AFR exome

AF:

0.00197

Gnomad AMR exome

AF:

0.0944

Gnomad ASJ exome

AF:

0.00119

Gnomad EAS exome

AF:

0.0460

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.0113

GnomAD4 exome

AF:

0.00503

AC:

7353

AN:

1461038

Hom.:

338

Cov.:

AF XY:

0.00455

AC XY:

3305

AN XY:

726818

show subpopulations

African (AFR)

AF:

0.00150

AC:

AN:

33436

American (AMR)

AF:

0.0957

AC:

4271

AN:

44632

Ashkenazi Jewish (ASJ)

AF:

0.00161

AC:

AN:

26116

East Asian (EAS)

AF:

0.0626

AC:

2483

AN:

39674

South Asian (SAS)

AF:

0.000986

AC:

AN:

86218

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.000521

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000810

AC:

AN:

1111482

Other (OTH)

AF:

0.00545

AC:

329

AN:

60340

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

317

634

952

1269

1586

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

200

300

400

500

<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:

0.00942

AC:

1432

AN:

152066

Hom.:

Cov.:

AF XY:

0.0106

AC XY:

791

AN XY:

74332

show subpopulations

African (AFR)

AF:

0.00236

AC:

AN:

41496

American (AMR)

AF:

0.0703

AC:

1073

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.000577

AC:

AN:

3464

East Asian (EAS)

AF:

0.0424

AC:

220

AN:

5184

South Asian (SAS)

AF:

0.00187

AC:

AN:

4802

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10542

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000235

AC:

AN:

67986

Other (OTH)

AF:

0.00662

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

131

197

262

328

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00310

Hom.:

Bravo

AF:

0.0157

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.0132

AC:

1607

Asia WGS

AF:

0.0210

AC:

AN:

3478

EpiCase

AF:

0.0000546

EpiControl

AF:

0.000237

ClinVar

Significance: Benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Nov 30, 2011

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

Jun 29, 2017

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jan 28, 2016

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Mitochondrial DNA depletion syndrome, encephalomyopathic form with methylmalonic aciduria

Benign:3

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.

Nov 11, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not provided

Benign:2

Jun 13, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.57

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.18

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.31

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

MetaRNN

Benign

0.0049

MetaSVM

Benign

-0.52

MutationAssessor

Uncertain

2.4

PhyloP100

7.5

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-4.4

REVEL

Pathogenic

0.73

Sift

Benign

0.10

Sift4G

Benign

0.086

Polyphen

0.88

Vest4

0.28

MPC

0.62

ClinPred

0.033

GERP RS

5.5

Varity_R

0.49

gMVP

0.91

Mutation Taster

=16/84

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over