1-244841999-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PP3_StrongPP5

The NM_198076.6(COX20):c.98C>T(p.Ser33Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,459,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

COX20
NM_198076.6 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 6.34

Variant links:

Genes affected

COX20 (HGNC:26970): (cytochrome c oxidase assembly factor COX20) This gene encodes a protein that plays a role in the assembly of cytochrome C oxidase, an important component of the respiratory pathway. It contains two transmembrane helices and localizes to the mitochondrial membrane. Mutations in this gene can cause mitochondrial complex IV deficiency, which results in ataxia and muscle hypotonia. There are multiple pseudogenes for this gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2015]

COX20 links:

HNRNPU (HGNC:5048): (heterogeneous nuclear ribonucleoprotein U) This gene encodes a member of a family of proteins that bind nucleic acids and function in the formation of ribonucleoprotein complexes in the nucleus with heterogeneous nuclear RNA (hnRNA). The encoded protein has affinity for both RNA and DNA, and binds scaffold-attached region (SAR) DNA. Mutations in this gene have been associated with epileptic encephalopathy, early infantile, 54. A pseudogene of this gene has been identified on chromosome 14. [provided by RefSeq, Jun 2017]

HNRNPU links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM1

In a topological_domain Mitochondrial intermembrane (size 31) in uniprot entity COX20_HUMAN there are 4 pathogenic changes around while only 1 benign (80%) in NM_198076.6

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.955

PP5

Variant 1-244841999-C-T is Pathogenic according to our data. Variant chr1-244841999-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 1339431.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COX20	NM_198076.6 linkuse as main transcript	c.98C>T	p.Ser33Leu	missense_variant	2/4	ENST00000411948.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COX20	ENST00000411948.7 linkuse as main transcript	c.98C>T	p.Ser33Leu	missense_variant	2/4	1	NM_198076.6	P1	Q5RI15-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251182

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135800

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1459990

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726356

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Mitochondrial complex 4 deficiency, nuclear type 11

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 04, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.74

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.34

Cadd

Uncertain

Dann

Pathogenic

1.0

DEOGEN2

Uncertain

0.59

D;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.96

D;D

M_CAP

Benign

0.066

MetaRNN

Pathogenic

0.95

D;D

MetaSVM

Uncertain

0.26

MutationAssessor

Uncertain

2.7

M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.49

PROVEAN

Pathogenic

-5.2

D;D

REVEL

Uncertain

0.58

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0040

D;D

Polyphen

1.0

D;.

Vest4

0.91

MutPred

0.73

Loss of sheet (P = 0.0357);.;

MVP

0.19

MPC

0.19

ClinPred

0.99

GERP RS

5.0

Varity_R

0.74

gMVP

0.78

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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