Genetic Variant SUCLA2-AS1:n.63G>T (chr13-48001451-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000646804.1(SUCLA2):c.-84-4428C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000884 in 678,600 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000038 ( 0 hom. )

Consequence

SUCLA2
ENST00000646804.1 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.186

Publications

8 publications found

Variant links:

Genes affected

SUCLA2-AS1 (HGNC:39965): (SUCLA2 antisense RNA 1)

SUCLA2-AS1 links:

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: AR, Mitochondrial Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet

SUCLA2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.78).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000646804.1. 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
	SUCLA2-AS1	NR_189308.1		n.47G>T		non_coding_transcript_exon	Exon 1 of 2
	SUCLA2	NM_003850.3	MANE Select	c.-182C>A		upstream_gene	N/A	NP_003841.1	E5KS60

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
SUCLA2-AS1	ENST00000423869.2	TSL:1	n.63G>T	non_coding_transcript_exon	Exon 1 of 2
SUCLA2	ENST00000646804.1		c.-84-4428C>A	intron	N/A	ENSP00000493977.1	A0A2R8YDQ9
SUCLA2	ENST00000643246.1		c.-84-4428C>A	intron	N/A	ENSP00000496235.1	A0A2R8YF84

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152094

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

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

GnomAD4 exome

AF:

0.00000380

AC:

AN:

526506

Hom.:

Cov.:

AF XY:

0.00000726

AC XY:

AN XY:

275530

show subpopulations

African (AFR)

AF:

0.000141

AC:

AN:

14164

American (AMR)

AF:

0.00

AC:

AN:

21440

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14682

East Asian (EAS)

AF:

0.00

AC:

AN:

31290

South Asian (SAS)

AF:

0.00

AC:

AN:

49200

European-Finnish (FIN)

AF:

0.00

AC:

AN:

30218

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2150

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

334948

Other (OTH)

AF:

0.00

AC:

AN:

28414

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

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:

0.0000263

AC:

AN:

152094

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74306

show subpopulations

African (AFR)

AF:

0.0000966

AC:

AN:

41398

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68006

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.438

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.:

140

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.78

CADD

Benign

9.0

(source)

DANN

Benign

0.72

PhyloP100

0.19

PromoterAI

-0.33

Neutral

(source)

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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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

Computational scores

Splicing

Publications

Other links and lift over