9-133352593-C-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 3P and 13B. PM1PP2BP4_StrongBP6BA1

The NM_003172.4(SURF1):c.604G>C(p.Asp202His) variant causes a missense change. The variant allele was found at a frequency of 0.00514 in 1,614,146 control chromosomes in the GnomAD database, including 439 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. D202D) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0068 ( 80 hom., cov: 33)

Exomes 𝑓: 0.0050 ( 359 hom. )

Consequence

SURF1
NM_003172.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 5.82

Publications

19 publications found

Variant links:

Genes affected

SURF1 (HGNC:11474): (SURF1 cytochrome c oxidase assembly factor) This gene encodes a protein localized to the inner mitochondrial membrane and thought to be involved in the biogenesis of the cytochrome c oxidase complex. The protein is a member of the SURF1 family, which includes the related yeast protein SHY1 and rickettsial protein RP733. The gene is located in the surfeit gene cluster, a group of very tightly linked genes that do not share sequence similarity, where it shares a bidirectional promoter with SURF2 on the opposite strand. Defects in this gene are a cause of Leigh syndrome, a severe neurological disorder that is commonly associated with systemic cytochrome c oxidase deficiency. [provided by RefSeq, Jul 2008]

SURF1 Gene-Disease associations (from GenCC):

Leigh syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
mitochondrial complex IV deficiency, nuclear type 1
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
Charcot-Marie-Tooth disease type 4K
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
Leigh syndrome with cardiomyopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Leigh syndrome with leukodystrophy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SURF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_003172.4

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 15 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: -0.68006 (below the threshold of 3.09). Trascript score misZ: -1.3185 (below the threshold of 3.09). GenCC associations: The gene is linked to Leigh syndrome with leukodystrophy, Leigh syndrome, mitochondrial complex IV deficiency, nuclear type 1, Charcot-Marie-Tooth disease type 4K, Leigh syndrome with cardiomyopathy.

BP4

Computational evidence support a benign effect (MetaRNN=0.0063804686).

BP6

Variant 9-133352593-C-G is Benign according to our data. Variant chr9-133352593-C-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 139375.

BA1

GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.142 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SURF1	NM_003172.4 link	c.604G>C	p.Asp202His	missense_variant	Exon 7 of 9	ENST00000371974.8	NP_003163.1	Q15526-1E5KRX5
SURF1	NM_001280787.1 link	c.277G>C	p.Asp93His	missense_variant	Exon 6 of 8		NP_001267716.1	Q15526A0A087WYS9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SURF1	ENST00000371974.8 link	c.604G>C	p.Asp202His	missense_variant	Exon 7 of 9	1	NM_003172.4	ENSP00000361042.3	Q15526-1
SURF1	ENST00000615505.4 link	c.277G>C	p.Asp93His	missense_variant	Exon 6 of 8	1		ENSP00000482067.1	A0A087WYS9
SURF1	ENST00000437995.1 link	n.514G>C		non_coding_transcript_exon_variant	Exon 6 of 8	5
SURF1	ENST00000495952.5 link	n.594G>C		non_coding_transcript_exon_variant	Exon 3 of 5	2

Frequencies

GnomAD3 genomes

AF:

0.00687

AC:

1045

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00147

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00812

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.151

Gnomad SAS

AF:

0.00539

Gnomad FIN

AF:

0.000377

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000456

Gnomad OTH

AF:

0.00718

GnomAD2 exomes

AF:

0.0143

AC:

3584

AN:

251146

AF XY:

0.0129

show subpopulations

Gnomad AFR exome

AF:

0.00136

Gnomad AMR exome

AF:

0.0152

Gnomad ASJ exome

AF:

0.000397

Gnomad EAS exome

AF:

0.153

Gnomad FIN exome

AF:

0.00143

Gnomad NFE exome

AF:

0.000502

Gnomad OTH exome

AF:

0.00750

GnomAD4 exome

AF:

0.00496

AC:

7253

AN:

1461848

Hom.:

359

Cov.:

AF XY:

0.00482

AC XY:

3505

AN XY:

727208

show subpopulations

African (AFR)

AF:

0.000747

AC:

AN:

33480

American (AMR)

AF:

0.0142

AC:

635

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.000421

AC:

AN:

26136

East Asian (EAS)

AF:

0.126

AC:

4986

AN:

39698

South Asian (SAS)

AF:

0.00376

AC:

324

AN:

86254

European-Finnish (FIN)

AF:

0.00131

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00174

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.000517

AC:

575

AN:

1111996

Other (OTH)

AF:

0.0102

AC:

617

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.484

Heterozygous variant carriers

481

962

1442

1923

2404

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

114

228

342

456

570

<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:

0.00685

AC:

1043

AN:

152298

Hom.:

Cov.:

AF XY:

0.00745

AC XY:

555

AN XY:

74458

show subpopulations

African (AFR)

AF:

0.00147

AC:

AN:

41558

American (AMR)

AF:

0.00810

AC:

124

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3470

East Asian (EAS)

AF:

0.151

AC:

780

AN:

5182

South Asian (SAS)

AF:

0.00540

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.000377

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000456

AC:

AN:

68030

Other (OTH)

AF:

0.00758

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

135

180

225

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:

0.00

Hom.:

Bravo

AF:

0.00808

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00204

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0132

AC:

1601

Asia WGS

AF:

0.0650

AC:

226

AN:

3478

EpiCase

AF:

0.000491

EpiControl

AF:

0.000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:2

Dec 10, 2021

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 09, 2014

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. -

Leigh syndrome

Benign:2

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely 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

Uncertain:1

Jun 01, 2016

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Uncertain

0.020

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.86

D;.

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Pathogenic

0.99

MetaRNN

Benign

0.0064

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Uncertain

2.1

M;.

PhyloP100

5.8

PrimateAI

Benign

0.38

PROVEAN

Uncertain

-4.0

D;.

REVEL

Uncertain

0.64

Sift

Uncertain

0.0030

D;.

Sift4G

Uncertain

0.0060

D;D

Polyphen

0.97

D;.

Vest4

0.24

MPC

0.17

ClinPred

0.027

GERP RS

5.4

Varity_R

0.46

gMVP

0.64

Mutation Taster

=86/14

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over