20-31644800-G-A

Variant names:

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_032609.3(COX4I2):c.412G>A(p.Glu138Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000394 in 1,614,062 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0020 ( 2 hom., cov: 31)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

COX4I2
NM_032609.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:1U:3

Conservation

PhyloP100: 5.07

Variant links:

Genes affected

COX4I2 (HGNC:16232): (cytochrome c oxidase subunit 4I2) Cytochrome c oxidase (COX), the terminal enzyme of the mitochondrial respiratory chain, catalyzes the electron transfer from reduced cytochrome c to oxygen. It is a heteromeric complex consisting of 3 catalytic subunits encoded by mitochondrial genes and multiple structural subunits encoded by nuclear genes. The mitochondrially-encoded subunits function in electron transfer, and the nuclear-encoded subunits may be involved in the regulation and assembly of the complex. This nuclear gene encodes isoform 2 of subunit IV. Isoform 1 of subunit IV is encoded by a different gene, however, the two genes show a similar structural organization. Subunit IV is the largest nuclear encoded subunit which plays a pivotal role in COX regulation. [provided by RefSeq, Jul 2008]

COX4I2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.007098973).

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COX4I2	NM_032609.3 link	c.412G>A	p.Glu138Lys	missense_variant	Exon 5 of 5	ENST00000376075.4	NP_115998.2	Q96KJ9H6SG14
COX4I2	XM_005260579.5 link	c.427G>A	p.Glu143Lys	missense_variant	Exon 4 of 4		XP_005260636.1
COX4I2	XM_005260580.5 link	c.295G>A	p.Glu99Lys	missense_variant	Exon 3 of 3		XP_005260637.1
COX4I2	XM_005260581.4 link	c.280G>A	p.Glu94Lys	missense_variant	Exon 4 of 4		XP_005260638.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COX4I2	ENST00000376075.4 link	c.412G>A	p.Glu138Lys	missense_variant	Exon 5 of 5	1	NM_032609.3	ENSP00000365243.3		Q96KJ9
COX4I2	ENST00000490030.1 link	n.310G>A		non_coding_transcript_exon_variant	Exon 4 of 4	5

Frequencies

GnomAD3 genomes

AF:

0.00203

AC:

309

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00710

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000656

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:

0.0000294

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.000513

AC:

129

AN:

251238

Hom.:

AF XY:

0.000449

AC XY:

AN XY:

135834

show subpopulations

Gnomad AFR exome

AF:

0.00732

Gnomad AMR exome

AF:

0.000202

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:

0.00000881

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000223

AC:

326

AN:

1461852

Hom.:

Cov.:

AF XY:

0.000216

AC XY:

157

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.00738

Gnomad4 AMR exome

AF:

0.000201

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000432

Gnomad4 OTH exome

AF:

0.000315

GnomAD4 genome

AF:

0.00204

AC:

310

AN:

152210

Hom.:

Cov.:

AF XY:

0.00199

AC XY:

148

AN XY:

74424

show subpopulations

Gnomad4 AFR

AF:

0.00710

Gnomad4 AMR

AF:

0.000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000339

Hom.:

Bravo

AF:

0.00222

ESP6500AA

AF:

0.00590

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000626

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Apr 30, 2024	This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 138 of the COX4I2 protein (p.Glu138Lys). This variant is present in population databases (rs119455950, gnomAD 0.7%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with COX4I2-related conditions (PMID: 19268275). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 2655). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. Studies have shown that this missense change alters COX4I2 gene expression (PMID: 19268275). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Feb 02, 2016	- -

Pancreatic insufficiency-anemia-hyperostosis syndrome

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Mar 01, 2009

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Uncertain

0.080

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

Eigen

Benign

0.15

Eigen_PC

Benign

0.019

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.78

M_CAP

Benign

0.074

MetaRNN

Benign

0.0071

MetaSVM

Uncertain

0.11

MutationAssessor

Uncertain

2.5

PrimateAI

Benign

0.43

PROVEAN

Uncertain

-3.6

REVEL

Pathogenic

0.67

Sift

Uncertain

0.011

Sift4G

Uncertain

0.0050

Polyphen

0.96

Vest4

0.26

MVP

0.88

MPC

0.16

ClinPred

0.047

GERP RS

3.4

Varity_R

0.34

gMVP

0.80

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