rs8139305

Positions:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The ENST00000395693.8(SCO2):c.776C>T(p.Ala259Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00163 in 1,613,760 control chromosomes in the GnomAD database, including 35 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A259T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0087 ( 20 hom., cov: 34)

Exomes 𝑓: 0.00090 ( 15 hom. )

Consequence

SCO2
ENST00000395693.8 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: 0.669

Variant links:

Genes affected

SCO2 (HGNC:10604): (synthesis of cytochrome C oxidase 2) Cytochrome c oxidase (COX) catalyzes the transfer of electrons from cytochrome c to molecular oxygen, which helps to maintain the proton gradient across the inner mitochondrial membrane that is necessary for aerobic ATP production. Human COX is a multimeric protein complex that requires several assembly factors; this gene encodes one of the COX assembly factors. The encoded protein is a metallochaperone that is involved in the biogenesis of cytochrome c oxidase subunit II. Mutations in this gene are associated with fatal infantile encephalocardiomyopathy and myopia 6. [provided by RefSeq, Oct 2014]

SCO2 links:

NCAPH2 (HGNC:25071): (non-SMC condensin II complex subunit H2) This gene encodes one of the non-SMC subunits of the condensin II complex. This complex plays an essential role in mitotic chromosome assembly. Alternate splicing of this gene results in multiple transcript variants.[provided by RefSeq, May 2010]

NCAPH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005732119).

BP6

Variant 22-50523636-G-A is Benign according to our data. Variant chr22-50523636-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 139088.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00871 (1327/152346) while in subpopulation AFR AF= 0.0303 (1260/41564). AF 95% confidence interval is 0.0289. There are 20 homozygotes in gnomad4. There are 612 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 20 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SCO2	NM_005138.3 linkuse as main transcript	c.776C>T	p.Ala259Val	missense_variant	2/2	ENST00000395693.8	NP_005129.2
NCAPH2	NM_152299.4 linkuse as main transcript	c.*261G>A		3_prime_UTR_variant	20/20	ENST00000420993.7	NP_689512.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SCO2	ENST00000395693.8 linkuse as main transcript	c.776C>T	p.Ala259Val	missense_variant	2/2	1	NM_005138.3	ENSP00000379046	P1
NCAPH2	ENST00000420993.7 linkuse as main transcript	c.*261G>A		3_prime_UTR_variant	20/20	1	NM_152299.4	ENSP00000410088	P4	Q6IBW4-1

Frequencies

GnomAD3 genomes

AF:

0.00872

AC:

1327

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0304

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00301

Gnomad ASJ

AF:

0.000864

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00621

GnomAD3 exomes

AF:

0.00237

AC:

596

AN:

251188

Hom.:

AF XY:

0.00182

AC XY:

247

AN XY:

135854

show subpopulations

Gnomad AFR exome

AF:

0.0328

Gnomad AMR exome

AF:

0.00133

Gnomad ASJ exome

AF:

0.000298

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000529

Gnomad OTH exome

AF:

0.00131

GnomAD4 exome

AF:

0.000897

AC:

1311

AN:

1461414

Hom.:

Cov.:

AF XY:

0.000776

AC XY:

564

AN XY:

727016

show subpopulations

Gnomad4 AFR exome

AF:

0.0316

Gnomad4 AMR exome

AF:

0.00165

Gnomad4 ASJ exome

AF:

0.000421

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000540

Gnomad4 OTH exome

AF:

0.00171

GnomAD4 genome

AF:

0.00871

AC:

1327

AN:

152346

Hom.:

Cov.:

AF XY:

0.00822

AC XY:

612

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.0303

Gnomad4 AMR

AF:

0.00301

Gnomad4 ASJ

AF:

0.000864

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00614

Alfa

AF:

0.00138

Hom.:

Bravo

AF:

0.00974

ESP6500AA

AF:

0.0259

AC:

114

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00290

AC:

352

Asia WGS

AF:

0.00231

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:6

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, no assertion criteria provided	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Mar 16, 2016	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 17, 2019	This variant is associated with the following publications: (PMID: 23643385) -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Dec 09, 2016	- -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jun 01, 2024	SCO2: BP4, BS1, BS2 -

Mitochondrial complex IV deficiency, nuclear type 1

Benign:2

Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -

Mitochondrial DNA depletion syndrome 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Cardioencephalomyopathy, fatal infantile, due to cytochrome c oxidase deficiency 1

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Fatal Infantile Cardioencephalomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.091

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Uncertain

0.50

D;D;D;D

Eigen

Benign

-0.66

Eigen_PC

Benign

-0.71

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.41

.;T;.;.

MetaRNN

Benign

0.0057

T;T;T;T

MetaSVM

Benign

-0.78

MutationAssessor

Benign

0.97

L;L;L;L

MutationTaster

Benign

0.97

N;N;N;N

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.1

N;N;N;N

REVEL

Benign

0.24

Sift

Benign

0.31

T;T;T;T

Sift4G

Benign

0.58

T;T;T;T

Polyphen

0.95

P;P;P;P

Vest4

0.72

MVP

0.81

MPC

0.035

ClinPred

0.0033

GERP RS

1.7

Varity_R

0.037

gMVP

0.35

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over