NM_004168.4:c.25C>T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4BP6

The NM_004168.4(SDHA):c.25C>T(p.Arg9Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,454,206 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R9G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 7.7e-7 ( 0 hom. )

Consequence

SDHA
NM_004168.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 0.272

Publications

0 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 links:

ENSG00000286001 (HGNC:):

ENSG00000286001 links:

CCDC127 (HGNC:30520): (coiled-coil domain containing 127) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

CCDC127 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=0.39136142).

BP6

Variant 5-218380-C-T is Benign according to our data. Variant chr5-218380-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 952939.

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	UniProt
SDHA	NM_004168.4	MANE Select	c.25C>T	p.Arg9Trp	missense	Exon 1 of 15	NP_004159.2	P31040-1
SDHA	NM_001294332.2		c.25C>T	p.Arg9Trp	missense	Exon 1 of 14	NP_001281261.1	P31040-2
SDHA	NM_001330758.2		c.25C>T	p.Arg9Trp	missense	Exon 1 of 13	NP_001317687.1	D6RFM5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SDHA	ENST00000264932.11	TSL:1 MANE Select	c.25C>T	p.Arg9Trp	missense	Exon 1 of 15	ENSP00000264932.6	P31040-1
ENSG00000286001	ENST00000651543.1		n.25C>T		non_coding_transcript_exon	Exon 1 of 24	ENSP00000499215.1	A0A494C1T6
SDHA	ENST00000874235.1		c.25C>T	p.Arg9Trp	missense	Exon 1 of 16	ENSP00000544294.1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD2 exomes

AF:

0.00000900

AC:

AN:

111102

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000146

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

7.68e-7

AC:

AN:

1302034

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

642804

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26812

American (AMR)

AF:

0.00

AC:

AN:

24952

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20206

East Asian (EAS)

AF:

0.0000323

AC:

AN:

30984

South Asian (SAS)

AF:

0.00

AC:

AN:

64812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33642

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3656

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1043708

Other (OTH)

AF:

0.00

AC:

AN:

53262

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

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:

0.00000657

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74342

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41442

American (AMR)

AF:

0.0000654

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2094

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.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000897

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

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

Uncertain

0.35

BayesDel_addAF

Benign

-0.098

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.30

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.82

M_CAP

Pathogenic

0.65

MetaRNN

Benign

0.39

MetaSVM

Benign

-0.83

MutationAssessor

Benign

0.55

PhyloP100

0.27

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-1.1

REVEL

Benign

0.10

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.021

Polyphen

0.0

Vest4

0.41

MutPred

0.72

Loss of disorder (P = 0.0075)

MVP

0.39

MPC

1.3

ClinPred

0.39

GERP RS

1.8

PromoterAI

0.099

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.9

Varity_R

0.061

gMVP

0.85

Mutation Taster

=81/19

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

Computational scores

Splicing

Publications

Other links and lift over