Genetic Variant SUCLG1:c.98-17_98-11delTTTTTTT (chr2-84449762-TAAAAAAA-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP6_Moderate

The NM_003849.4(SUCLG1):c.98-17_98-11delTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0142 in 781,904 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000011 ( 0 hom., cov: 0)

Exomes 𝑓: 0.016 ( 0 hom. )

Consequence

SUCLG1
NM_003849.4 intron

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: 1.74

Publications

3 publications found

Variant links:

Genes affected

SUCLG1 (HGNC:11449): (succinate-CoA ligase GDP/ADP-forming subunit alpha) This gene encodes the alpha subunit of the heterodimeric enzyme succinate coenzyme A ligase. This enzyme is targeted to the mitochondria and catalyzes the conversion of succinyl CoA and ADP or GDP to succinate and ATP or GTP. Mutations in this gene are the cause of the metabolic disorder fatal infantile lactic acidosis and mitochondrial DNA depletion. [provided by RefSeq, Feb 2010]

SUCLG1 Gene-Disease associations (from GenCC):

mitochondrial DNA depletion syndrome 9
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P
Leigh syndrome
Inheritance: AR Classification: MODERATE Submitted by: ClinGen

SUCLG1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Variant has high frequency in the MID (0.0249) population. However there is too low homozygotes in high coverage region: (expected more than 39, got 0).

BP6

Variant 2-84449762-TAAAAAAA-T is Benign according to our data. Variant chr2-84449762-TAAAAAAA-T is described in ClinVar as [Likely_benign]. Clinvar id is 559371.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SUCLG1	NM_003849.4 link	c.98-17_98-11delTTTTTTT		intron_variant	Intron 1 of 8	ENST00000393868.7	NP_003840.2	P53597

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SUCLG1	ENST00000393868.7 link	c.98-17_98-11delTTTTTTT		intron_variant	Intron 1 of 8	1	NM_003849.4	ENSP00000377446.2		P53597

Frequencies

GnomAD3 genomes

AF:

0.0000111

AC:

AN:

90114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000426

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0161

AC:

11106

AN:

691790

Hom.:

AF XY:

0.0157

AC XY:

5663

AN XY:

359922

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0270

AC:

414

AN:

15314

American (AMR)

AF:

0.0179

AC:

346

AN:

19332

Ashkenazi Jewish (ASJ)

AF:

0.0197

AC:

314

AN:

15966

East Asian (EAS)

AF:

0.0219

AC:

635

AN:

29022

South Asian (SAS)

AF:

0.0169

AC:

786

AN:

46602

European-Finnish (FIN)

AF:

0.0129

AC:

504

AN:

39142

Middle Eastern (MID)

AF:

0.0280

AC:

AN:

2254

European-Non Finnish (NFE)

AF:

0.0151

AC:

7417

AN:

492592

Other (OTH)

AF:

0.0199

AC:

627

AN:

31566

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.285

Heterozygous variant carriers

904

1808

2713

3617

4521

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

192

384

576

768

960

<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:

0.0000111

AC:

AN:

90114

Hom.:

Cov.:

AF XY:

0.0000241

AC XY:

AN XY:

41562

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

24994

American (AMR)

AF:

0.00

AC:

AN:

8356

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2410

East Asian (EAS)

AF:

0.00

AC:

AN:

2972

South Asian (SAS)

AF:

0.000426

AC:

AN:

2346

European-Finnish (FIN)

AF:

0.00

AC:

AN:

2618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

212

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

44422

Other (OTH)

AF:

0.00

AC:

AN:

1162

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

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:

0.00

Hom.:

848

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Mar 16, 2016

Mayo Clinic Laboratories, Mayo Clinic

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mitochondrial DNA depletion syndrome 9

Benign:1

Oct 21, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

1.7

Mutation Taster

=100/0

polymorphism

(source)

Splicing

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

Publications

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2-84449762-TAAAAAAAAAAAAAAAA-TAAAAAAAAA

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