5-254498-A-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004168.4(SDHA):c.1900A>T(p.Thr634Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000256 in 1,564,938 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T634A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 28)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

SDHA
NM_004168.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.02

Publications

1 publications found

Variant links:

Genes affected

SDHA (HGNC:10680): (succinate dehydrogenase complex flavoprotein subunit A) This gene encodes a major catalytic subunit of succinate-ubiquinone oxidoreductase, a complex of the mitochondrial respiratory chain. The complex is composed of four nuclear-encoded subunits and is localized in the mitochondrial inner membrane. Mutations in this gene have been associated with a form of mitochondrial respiratory chain deficiency known as Leigh Syndrome. A pseudogene has been identified on chromosome 3q29. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2014]

SDHA Gene-Disease associations (from GenCC):

hereditary pheochromocytoma-paraganglioma
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
pheochromocytoma/paraganglioma syndrome 5
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Illumina, Ambry Genetics, Labcorp Genetics (formerly Invitae)
mitochondrial complex II deficiency, nuclear type 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
neurodegeneration with ataxia and late-onset optic atrophy
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
Leigh syndrome
Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics, ClinGen
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
gastrointestinal stromal tumor
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Leigh syndrome with leukodystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
mitochondrial complex II deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
dilated cardiomyopathy 1GG
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

SDHA links:

ENSG00000286001 (HGNC:):

ENSG00000286001 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

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26141784).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004168.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SDHA	NM_004168.4	MANE Select	c.1900A>T	p.Thr634Ser	missense	Exon 14 of 15	NP_004159.2
SDHA	NM_001294332.2		c.1756A>T	p.Thr586Ser	missense	Exon 13 of 14	NP_001281261.1
SDHA	NM_001330758.2		c.1657A>T	p.Thr553Ser	missense	Exon 12 of 13	NP_001317687.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SDHA	ENST00000264932.11	TSL:1 MANE Select	c.1900A>T	p.Thr634Ser	missense	Exon 14 of 15	ENSP00000264932.6
ENSG00000286001	ENST00000651543.1		n.*633A>T		non_coding_transcript_exon	Exon 13 of 24	ENSP00000499215.1
ENSG00000286001	ENST00000651543.1		n.*633A>T		3_prime_UTR	Exon 13 of 24	ENSP00000499215.1

Frequencies

GnomAD3 genomes

AF:

0.00000661

AC:

AN:

151248

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000212

AC:

AN:

1413690

Hom.:

Cov.:

AF XY:

0.00000429

AC XY:

AN XY:

699240

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32018

American (AMR)

AF:

0.00

AC:

AN:

38238

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25240

East Asian (EAS)

AF:

0.0000265

AC:

AN:

37706

South Asian (SAS)

AF:

0.00

AC:

AN:

80562

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50346

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4068

European-Non Finnish (NFE)

AF:

0.00000184

AC:

AN:

1087136

Other (OTH)

AF:

0.00

AC:

AN:

58376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

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:

0.00000661

AC:

AN:

151248

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73862

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

40728

American (AMR)

AF:

0.00

AC:

AN:

15230

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5152

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67942

Other (OTH)

AF:

0.00

AC:

AN:

2080

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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.:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Hereditary cancer-predisposing syndrome (1)

Pheochromocytoma/paraganglioma syndrome 5;C5700310:Mitochondrial complex II deficiency, nuclear type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Uncertain

0.050

BayesDel_noAF

Benign

-0.17

CADD

Benign

(source)

DANN

Benign

0.44

DEOGEN2

Benign

0.32

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.21

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.79

M_CAP

Uncertain

0.088

MetaRNN

Benign

0.26

MetaSVM

Benign

-0.66

MutationAssessor

Benign

1.3

PhyloP100

5.0

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.36

Sift

Benign

0.45

Sift4G

Benign

0.71

Polyphen

0.0

Vest4

0.15

MutPred

0.35

Gain of glycosylation at T634 (P = 0.0221)

MVP

0.76

MPC

0.43

ClinPred

0.33

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.11

gMVP

0.49

Mutation Taster

=74/26

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over